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targets/cmsis/TARGET_STM/TARGET_DISCO_F334C8/stm32f3xx_hal_usart.c@381:5460fc57b6e4, 2014-11-03 (annotated)

Committer:: mbed_official
Date:: Mon Nov 03 10:30:07 2014 +0000
Revision:: 381:5460fc57b6e4

Synchronized with git revision 02478cd1f27fc7b9643486472635eb515b2bca81

Full URL: https://github.com/mbedmicro/mbed/commit/02478cd1f27fc7b9643486472635eb515b2bca81/

Target: LPC1549 - Fix serial interrupt issues (issue report #616)

Who changed what in which revision?

User	Revision	Line number	New contents of line
mbed_official	381:5460fc57b6e4	1	/**
mbed_official	381:5460fc57b6e4	2	******************************************************************************
mbed_official	381:5460fc57b6e4	3	* @file stm32f3xx_hal_usart.c
mbed_official	381:5460fc57b6e4	4	* @author MCD Application Team
mbed_official	381:5460fc57b6e4	5	* @version V1.1.0
mbed_official	381:5460fc57b6e4	6	* @date 12-Sept-2014
mbed_official	381:5460fc57b6e4	7	* @brief USART HAL module driver.
mbed_official	381:5460fc57b6e4	8	*
mbed_official	381:5460fc57b6e4	9	* This file provides firmware functions to manage the following
mbed_official	381:5460fc57b6e4	10	* functionalities of the Universal Synchronous/Asynchronous Receiver Transmitter
mbed_official	381:5460fc57b6e4	11	* Peripheral (USART).
mbed_official	381:5460fc57b6e4	12	* + Initialization and de-initialization functions
mbed_official	381:5460fc57b6e4	13	* + IO operation functions
mbed_official	381:5460fc57b6e4	14	* + Peripheral Control functions
mbed_official	381:5460fc57b6e4	15	*
mbed_official	381:5460fc57b6e4	16	@verbatim
mbed_official	381:5460fc57b6e4	17	===============================================================================
mbed_official	381:5460fc57b6e4	18	##### How to use this driver #####
mbed_official	381:5460fc57b6e4	19	===============================================================================
mbed_official	381:5460fc57b6e4	20	[..]
mbed_official	381:5460fc57b6e4	21	The USART HAL driver can be used as follows:
mbed_official	381:5460fc57b6e4	22
mbed_official	381:5460fc57b6e4	23	(#) Declare a USART_HandleTypeDef handle structure.
mbed_official	381:5460fc57b6e4	24	(#) Initialize the USART low level resources by implement the HAL_USART_MspInit ()API:
mbed_official	381:5460fc57b6e4	25	(##) Enable the USARTx interface clock.
mbed_official	381:5460fc57b6e4	26	(##) USART pins configuration:
mbed_official	381:5460fc57b6e4	27	(+) Enable the clock for the USART GPIOs.
mbed_official	381:5460fc57b6e4	28	(+) Configure these USART pins as alternate function pull-up.
mbed_official	381:5460fc57b6e4	29	(##) NVIC configuration if you need to use interrupt process (HAL_USART_Transmit_IT(),
mbed_official	381:5460fc57b6e4	30	HAL_USART_Receive_IT() and HAL_USART_TransmitReceive_IT() APIs):
mbed_official	381:5460fc57b6e4	31	(+) Configure the USARTx interrupt priority.
mbed_official	381:5460fc57b6e4	32	(+) Enable the NVIC USART IRQ handle.
mbed_official	381:5460fc57b6e4	33	(@) The specific USART interrupts (Transmission complete interrupt,
mbed_official	381:5460fc57b6e4	34	RXNE interrupt and Error Interrupts) will be managed using the macros
mbed_official	381:5460fc57b6e4	35	__HAL_USART_ENABLE_IT() and __HAL_USART_DISABLE_IT() inside the transmit and receive process.
mbed_official	381:5460fc57b6e4	36	(##) DMA Configuration if you need to use DMA process (HAL_USART_Transmit_DMA()
mbed_official	381:5460fc57b6e4	37	HAL_USART_Receive_IT() and HAL_USART_TransmitReceive_IT() APIs):
mbed_official	381:5460fc57b6e4	38	(+) Declare a DMA handle structure for the Tx/Rx channel.
mbed_official	381:5460fc57b6e4	39	(+) Enable the DMAx interface clock.
mbed_official	381:5460fc57b6e4	40	(+) Configure the declared DMA handle structure with the required Tx/Rx parameters.
mbed_official	381:5460fc57b6e4	41	(+) Configure the DMA Tx/Rx channel.
mbed_official	381:5460fc57b6e4	42	(+) Associate the initilalized DMA handle to the USART DMA Tx/Rx handle.
mbed_official	381:5460fc57b6e4	43	(+) Configure the priority and enable the NVIC for the transfer complete interrupt on the DMA Tx/Rx channel.
mbed_official	381:5460fc57b6e4	44
mbed_official	381:5460fc57b6e4	45	(#) Program the Baud Rate, Word Length , Stop Bit, Parity, Hardware
mbed_official	381:5460fc57b6e4	46	flow control and Mode(Receiver/Transmitter) in the husart Init structure.
mbed_official	381:5460fc57b6e4	47
mbed_official	381:5460fc57b6e4	48	(#) Initialize the USART registers by calling the HAL_USART_Init() API:
mbed_official	381:5460fc57b6e4	49	(+) These API's configures also the low level Hardware GPIO, CLOCK, CORTEX...etc)
mbed_official	381:5460fc57b6e4	50	by calling the customed HAL_USART_MspInit(&husart) API.
mbed_official	381:5460fc57b6e4	51
mbed_official	381:5460fc57b6e4	52	@endverbatim
mbed_official	381:5460fc57b6e4	53	******************************************************************************
mbed_official	381:5460fc57b6e4	54	* @attention
mbed_official	381:5460fc57b6e4	55	*
mbed_official	381:5460fc57b6e4	56	* <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
mbed_official	381:5460fc57b6e4	57	*
mbed_official	381:5460fc57b6e4	58	* Redistribution and use in source and binary forms, with or without modification,
mbed_official	381:5460fc57b6e4	59	* are permitted provided that the following conditions are met:
mbed_official	381:5460fc57b6e4	60	* 1. Redistributions of source code must retain the above copyright notice,
mbed_official	381:5460fc57b6e4	61	* this list of conditions and the following disclaimer.
mbed_official	381:5460fc57b6e4	62	* 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official	381:5460fc57b6e4	63	* this list of conditions and the following disclaimer in the documentation
mbed_official	381:5460fc57b6e4	64	* and/or other materials provided with the distribution.
mbed_official	381:5460fc57b6e4	65	* 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official	381:5460fc57b6e4	66	* may be used to endorse or promote products derived from this software
mbed_official	381:5460fc57b6e4	67	* without specific prior written permission.
mbed_official	381:5460fc57b6e4	68	*
mbed_official	381:5460fc57b6e4	69	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official	381:5460fc57b6e4	70	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official	381:5460fc57b6e4	71	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official	381:5460fc57b6e4	72	* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official	381:5460fc57b6e4	73	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official	381:5460fc57b6e4	74	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official	381:5460fc57b6e4	75	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official	381:5460fc57b6e4	76	* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official	381:5460fc57b6e4	77	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official	381:5460fc57b6e4	78	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official	381:5460fc57b6e4	79	*
mbed_official	381:5460fc57b6e4	80	******************************************************************************
mbed_official	381:5460fc57b6e4	81	*/
mbed_official	381:5460fc57b6e4	82
mbed_official	381:5460fc57b6e4	83	/* Includes ------------------------------------------------------------------*/
mbed_official	381:5460fc57b6e4	84	#include "stm32f3xx_hal.h"
mbed_official	381:5460fc57b6e4	85
mbed_official	381:5460fc57b6e4	86	/** @addtogroup STM32F3xx_HAL_Driver
mbed_official	381:5460fc57b6e4	87	* @{
mbed_official	381:5460fc57b6e4	88	*/
mbed_official	381:5460fc57b6e4	89
mbed_official	381:5460fc57b6e4	90	/** @defgroup USART HAL USART Synchronous module driver
mbed_official	381:5460fc57b6e4	91	* @brief HAL USART Synchronous module driver
mbed_official	381:5460fc57b6e4	92	* @{
mbed_official	381:5460fc57b6e4	93	*/
mbed_official	381:5460fc57b6e4	94	#ifdef HAL_USART_MODULE_ENABLED
mbed_official	381:5460fc57b6e4	95	/* Private typedef -----------------------------------------------------------*/
mbed_official	381:5460fc57b6e4	96	/* Private define ------------------------------------------------------------*/
mbed_official	381:5460fc57b6e4	97	/** @defgroup UASRT_Private_Constants USART Private Constants
mbed_official	381:5460fc57b6e4	98	* @{
mbed_official	381:5460fc57b6e4	99	*/
mbed_official	381:5460fc57b6e4	100	#define DUMMY_DATA ((uint16_t) 0xFFFF)
mbed_official	381:5460fc57b6e4	101	#define TEACK_REACK_TIMEOUT ((uint32_t) 1000)
mbed_official	381:5460fc57b6e4	102	#define USART_TXDMA_TIMEOUTVALUE 22000
mbed_official	381:5460fc57b6e4	103	#define USART_TIMEOUT_VALUE 22000
mbed_official	381:5460fc57b6e4	104	#define USART_CR1_FIELDS ((uint32_t)(USART_CR1_M \| USART_CR1_PCE \| USART_CR1_PS \| \
mbed_official	381:5460fc57b6e4	105	USART_CR1_TE \| USART_CR1_RE))
mbed_official	381:5460fc57b6e4	106	#define USART_CR2_FIELDS ((uint32_t)(USART_CR2_CPHA \| USART_CR2_CPOL \| \
mbed_official	381:5460fc57b6e4	107	USART_CR2_CLKEN \| USART_CR2_LBCL \| USART_CR2_STOP))
mbed_official	381:5460fc57b6e4	108	/**
mbed_official	381:5460fc57b6e4	109	* @}
mbed_official	381:5460fc57b6e4	110	*/
mbed_official	381:5460fc57b6e4	111	/* Private macro -------------------------------------------------------------*/
mbed_official	381:5460fc57b6e4	112	/* Private variables ---------------------------------------------------------*/
mbed_official	381:5460fc57b6e4	113	/* Private function prototypes -----------------------------------------------*/
mbed_official	381:5460fc57b6e4	114	static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma);
mbed_official	381:5460fc57b6e4	115	static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
mbed_official	381:5460fc57b6e4	116	static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
mbed_official	381:5460fc57b6e4	117	static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
mbed_official	381:5460fc57b6e4	118	static void USART_DMAError(DMA_HandleTypeDef *hdma);
mbed_official	381:5460fc57b6e4	119	static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, uint32_t Timeout);
mbed_official	381:5460fc57b6e4	120	static HAL_StatusTypeDef USART_SetConfig(USART_HandleTypeDef *husart);
mbed_official	381:5460fc57b6e4	121	static HAL_StatusTypeDef USART_CheckIdleState(USART_HandleTypeDef *husart);
mbed_official	381:5460fc57b6e4	122	static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart);
mbed_official	381:5460fc57b6e4	123	static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart);
mbed_official	381:5460fc57b6e4	124	static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart);
mbed_official	381:5460fc57b6e4	125	static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart);
mbed_official	381:5460fc57b6e4	126	/* Exported functions --------------------------------------------------------*/
mbed_official	381:5460fc57b6e4	127
mbed_official	381:5460fc57b6e4	128
mbed_official	381:5460fc57b6e4	129	/** @defgroup USART_Exported_Functions USART Exported Functions
mbed_official	381:5460fc57b6e4	130	* @{
mbed_official	381:5460fc57b6e4	131	*/
mbed_official	381:5460fc57b6e4	132
mbed_official	381:5460fc57b6e4	133	/** @defgroup USART_Exported_Functions_Group1 Initialization and de-initialization functions
mbed_official	381:5460fc57b6e4	134	* @brief Initialization and Configuration functions
mbed_official	381:5460fc57b6e4	135	*
mbed_official	381:5460fc57b6e4	136	@verbatim
mbed_official	381:5460fc57b6e4	137	===============================================================================
mbed_official	381:5460fc57b6e4	138	##### Initialization and Configuration functions #####
mbed_official	381:5460fc57b6e4	139	===============================================================================
mbed_official	381:5460fc57b6e4	140	[..]
mbed_official	381:5460fc57b6e4	141	This subsection provides a set of functions allowing to initialize the USART
mbed_official	381:5460fc57b6e4	142	in asynchronous and in synchronous modes.
mbed_official	381:5460fc57b6e4	143	(+) For the asynchronous mode only these parameters can be configured:
mbed_official	381:5460fc57b6e4	144	(++) Baud Rate
mbed_official	381:5460fc57b6e4	145	(++) Word Length
mbed_official	381:5460fc57b6e4	146	(++) Stop Bit
mbed_official	381:5460fc57b6e4	147	(++) Parity: If the parity is enabled, then the MSB bit of the data written
mbed_official	381:5460fc57b6e4	148	in the data register is transmitted but is changed by the parity bit.
mbed_official	381:5460fc57b6e4	149	Depending on the frame length defined by the M bit (8-bits or 9-bits)
mbed_official	381:5460fc57b6e4	150	or by the M1 and M0 bits (7-bit, 8-bit or 9-bit),
mbed_official	381:5460fc57b6e4	151	the possible USART frame formats are as listed in the following table:
mbed_official	381:5460fc57b6e4	152	+---------------------------------------------------------------+
mbed_official	381:5460fc57b6e4	153	\| M bit \| PCE bit \| USART frame \|
mbed_official	381:5460fc57b6e4	154	\|-----------\|-----------\|---------------------------------------\|
mbed_official	381:5460fc57b6e4	155	\| 0 \| 0 \| \| SB \| 8-bit data \| STB \| \|
mbed_official	381:5460fc57b6e4	156	\|-----------\|-----------\|---------------------------------------\|
mbed_official	381:5460fc57b6e4	157	\| 0 \| 1 \| \| SB \| 7-bit data \| PB \| STB \| \|
mbed_official	381:5460fc57b6e4	158	\|-----------\|-----------\|---------------------------------------\|
mbed_official	381:5460fc57b6e4	159	\| 1 \| 0 \| \| SB \| 9-bit data \| STB \| \|
mbed_official	381:5460fc57b6e4	160	\|-----------\|-----------\|---------------------------------------\|
mbed_official	381:5460fc57b6e4	161	\| 1 \| 1 \| \| SB \| 8-bit data \| PB \| STB \| \|
mbed_official	381:5460fc57b6e4	162	+---------------------------------------------------------------+
mbed_official	381:5460fc57b6e4	163	\| M1M0 bits \| PCE bit \| USART frame \|
mbed_official	381:5460fc57b6e4	164	\|-----------------------\|---------------------------------------\|
mbed_official	381:5460fc57b6e4	165	\| 10 \| 0 \| \| SB \| 7-bit data \| STB \| \|
mbed_official	381:5460fc57b6e4	166	\|-----------\|-----------\|---------------------------------------\|
mbed_official	381:5460fc57b6e4	167	\| 10 \| 1 \| \| SB \| 6-bit data \| PB \| STB \| \|
mbed_official	381:5460fc57b6e4	168	+---------------------------------------------------------------+
mbed_official	381:5460fc57b6e4	169	(++) USART polarity
mbed_official	381:5460fc57b6e4	170	(++) USART phase
mbed_official	381:5460fc57b6e4	171	(++) USART LastBit
mbed_official	381:5460fc57b6e4	172	(++) Receiver/transmitter modes
mbed_official	381:5460fc57b6e4	173
mbed_official	381:5460fc57b6e4	174	[..]
mbed_official	381:5460fc57b6e4	175	The HAL_USART_Init() function follows the USART synchronous configuration
mbed_official	381:5460fc57b6e4	176	procedure (details for the procedure are available in reference manual).
mbed_official	381:5460fc57b6e4	177
mbed_official	381:5460fc57b6e4	178	@endverbatim
mbed_official	381:5460fc57b6e4	179	* @{
mbed_official	381:5460fc57b6e4	180	*/
mbed_official	381:5460fc57b6e4	181
mbed_official	381:5460fc57b6e4	182	/**
mbed_official	381:5460fc57b6e4	183	* @brief Initializes the USART mode according to the specified
mbed_official	381:5460fc57b6e4	184	* parameters in the USART_InitTypeDef and create the associated handle .
mbed_official	381:5460fc57b6e4	185	* @param husart: usart handle
mbed_official	381:5460fc57b6e4	186	* @retval HAL status
mbed_official	381:5460fc57b6e4	187	*/
mbed_official	381:5460fc57b6e4	188	HAL_StatusTypeDef HAL_USART_Init(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	189	{
mbed_official	381:5460fc57b6e4	190	/* Check the USART handle allocation */
mbed_official	381:5460fc57b6e4	191	if(husart == HAL_NULL)
mbed_official	381:5460fc57b6e4	192	{
mbed_official	381:5460fc57b6e4	193	return HAL_ERROR;
mbed_official	381:5460fc57b6e4	194	}
mbed_official	381:5460fc57b6e4	195
mbed_official	381:5460fc57b6e4	196	/* Check the parameters */
mbed_official	381:5460fc57b6e4	197	assert_param(IS_USART_INSTANCE(husart->Instance));
mbed_official	381:5460fc57b6e4	198
mbed_official	381:5460fc57b6e4	199	if(husart->State == HAL_USART_STATE_RESET)
mbed_official	381:5460fc57b6e4	200	{
mbed_official	381:5460fc57b6e4	201	/* Init the low level hardware : GPIO, CLOCK */
mbed_official	381:5460fc57b6e4	202	HAL_USART_MspInit(husart);
mbed_official	381:5460fc57b6e4	203	}
mbed_official	381:5460fc57b6e4	204
mbed_official	381:5460fc57b6e4	205	husart->State = HAL_USART_STATE_BUSY;
mbed_official	381:5460fc57b6e4	206
mbed_official	381:5460fc57b6e4	207	/* Disable the Peripheral */
mbed_official	381:5460fc57b6e4	208	__HAL_USART_DISABLE(husart);
mbed_official	381:5460fc57b6e4	209
mbed_official	381:5460fc57b6e4	210	/* Set the Usart Communication parameters */
mbed_official	381:5460fc57b6e4	211	if (USART_SetConfig(husart) == HAL_ERROR)
mbed_official	381:5460fc57b6e4	212	{
mbed_official	381:5460fc57b6e4	213	return HAL_ERROR;
mbed_official	381:5460fc57b6e4	214	}
mbed_official	381:5460fc57b6e4	215
mbed_official	381:5460fc57b6e4	216	/* In Synchronous mode, the following bits must be kept cleared:
mbed_official	381:5460fc57b6e4	217	- LINEN bit in the USART_CR2 register
mbed_official	381:5460fc57b6e4	218	- HDSEL, SCEN and IREN bits in the USART_CR3 register.*/
mbed_official	381:5460fc57b6e4	219	husart->Instance->CR2 &= ~USART_CR2_LINEN;
mbed_official	381:5460fc57b6e4	220	husart->Instance->CR3 &= ~(USART_CR3_SCEN \| USART_CR3_HDSEL \| USART_CR3_IREN);
mbed_official	381:5460fc57b6e4	221
mbed_official	381:5460fc57b6e4	222	/* Enable the Peripharal */
mbed_official	381:5460fc57b6e4	223	__HAL_USART_ENABLE(husart);
mbed_official	381:5460fc57b6e4	224
mbed_official	381:5460fc57b6e4	225	/* TEACK and/or REACK to check before moving husart->State to Ready */
mbed_official	381:5460fc57b6e4	226	return (USART_CheckIdleState(husart));
mbed_official	381:5460fc57b6e4	227	}
mbed_official	381:5460fc57b6e4	228
mbed_official	381:5460fc57b6e4	229	/**
mbed_official	381:5460fc57b6e4	230	* @brief DeInitializes the USART peripheral
mbed_official	381:5460fc57b6e4	231	* @param husart: usart handle
mbed_official	381:5460fc57b6e4	232	* @retval HAL status
mbed_official	381:5460fc57b6e4	233	*/
mbed_official	381:5460fc57b6e4	234	HAL_StatusTypeDef HAL_USART_DeInit(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	235	{
mbed_official	381:5460fc57b6e4	236	/* Check the USART handle allocation */
mbed_official	381:5460fc57b6e4	237	if(husart == HAL_NULL)
mbed_official	381:5460fc57b6e4	238	{
mbed_official	381:5460fc57b6e4	239	return HAL_ERROR;
mbed_official	381:5460fc57b6e4	240	}
mbed_official	381:5460fc57b6e4	241
mbed_official	381:5460fc57b6e4	242	/* Check the parameters */
mbed_official	381:5460fc57b6e4	243	assert_param(IS_USART_INSTANCE(husart->Instance));
mbed_official	381:5460fc57b6e4	244
mbed_official	381:5460fc57b6e4	245	husart->State = HAL_USART_STATE_BUSY;
mbed_official	381:5460fc57b6e4	246
mbed_official	381:5460fc57b6e4	247	husart->Instance->CR1 = 0x0;
mbed_official	381:5460fc57b6e4	248	husart->Instance->CR2 = 0x0;
mbed_official	381:5460fc57b6e4	249	husart->Instance->CR3 = 0x0;
mbed_official	381:5460fc57b6e4	250
mbed_official	381:5460fc57b6e4	251	/* DeInit the low level hardware */
mbed_official	381:5460fc57b6e4	252	HAL_USART_MspDeInit(husart);
mbed_official	381:5460fc57b6e4	253
mbed_official	381:5460fc57b6e4	254	husart->ErrorCode = HAL_USART_ERROR_NONE;
mbed_official	381:5460fc57b6e4	255	husart->State = HAL_USART_STATE_RESET;
mbed_official	381:5460fc57b6e4	256
mbed_official	381:5460fc57b6e4	257	/* Process Unlock */
mbed_official	381:5460fc57b6e4	258	__HAL_UNLOCK(husart);
mbed_official	381:5460fc57b6e4	259
mbed_official	381:5460fc57b6e4	260	return HAL_OK;
mbed_official	381:5460fc57b6e4	261	}
mbed_official	381:5460fc57b6e4	262
mbed_official	381:5460fc57b6e4	263	/**
mbed_official	381:5460fc57b6e4	264	* @brief USART MSP Init
mbed_official	381:5460fc57b6e4	265	* @param husart: usart handle
mbed_official	381:5460fc57b6e4	266	* @retval None
mbed_official	381:5460fc57b6e4	267	*/
mbed_official	381:5460fc57b6e4	268	__weak void HAL_USART_MspInit(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	269	{
mbed_official	381:5460fc57b6e4	270	/* NOTE : This function should not be modified, when the callback is needed,
mbed_official	381:5460fc57b6e4	271	the HAL_USART_MspInit can be implemented in the user file
mbed_official	381:5460fc57b6e4	272	*/
mbed_official	381:5460fc57b6e4	273	}
mbed_official	381:5460fc57b6e4	274
mbed_official	381:5460fc57b6e4	275	/**
mbed_official	381:5460fc57b6e4	276	* @brief USART MSP DeInit
mbed_official	381:5460fc57b6e4	277	* @param husart: usart handle
mbed_official	381:5460fc57b6e4	278	* @retval None
mbed_official	381:5460fc57b6e4	279	*/
mbed_official	381:5460fc57b6e4	280	__weak void HAL_USART_MspDeInit(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	281	{
mbed_official	381:5460fc57b6e4	282	/* NOTE : This function should not be modified, when the callback is needed,
mbed_official	381:5460fc57b6e4	283	the HAL_USART_MspDeInit can be implemented in the user file
mbed_official	381:5460fc57b6e4	284	*/
mbed_official	381:5460fc57b6e4	285	}
mbed_official	381:5460fc57b6e4	286
mbed_official	381:5460fc57b6e4	287	/**
mbed_official	381:5460fc57b6e4	288	* @}
mbed_official	381:5460fc57b6e4	289	*/
mbed_official	381:5460fc57b6e4	290
mbed_official	381:5460fc57b6e4	291	/** @defgroup USART_Exported_Functions_Group2 Input and Output operation functions
mbed_official	381:5460fc57b6e4	292	* @brief USART Transmit/Receive functions
mbed_official	381:5460fc57b6e4	293	*
mbed_official	381:5460fc57b6e4	294	@verbatim
mbed_official	381:5460fc57b6e4	295	===============================================================================
mbed_official	381:5460fc57b6e4	296	##### I/O operation functions #####
mbed_official	381:5460fc57b6e4	297	===============================================================================
mbed_official	381:5460fc57b6e4	298	This subsection provides a set of functions allowing to manage the USART synchronous
mbed_official	381:5460fc57b6e4	299	data transfers.
mbed_official	381:5460fc57b6e4	300
mbed_official	381:5460fc57b6e4	301	[..] The USART supports master mode only: it cannot receive or send data related to an input
mbed_official	381:5460fc57b6e4	302	clock (SCLK is always an output).
mbed_official	381:5460fc57b6e4	303
mbed_official	381:5460fc57b6e4	304	(#) There are two mode of transfer:
mbed_official	381:5460fc57b6e4	305	(+) Blocking mode: The communication is performed in polling mode.
mbed_official	381:5460fc57b6e4	306	The HAL status of all data processing is returned by the same function
mbed_official	381:5460fc57b6e4	307	after finishing transfer.
mbed_official	381:5460fc57b6e4	308	(+) No-Blocking mode: The communication is performed using Interrupts
mbed_official	381:5460fc57b6e4	309	or DMA, These API's return the HAL status.
mbed_official	381:5460fc57b6e4	310	The end of the data processing will be indicated through the
mbed_official	381:5460fc57b6e4	311	dedicated USART IRQ when using Interrupt mode or the DMA IRQ when
mbed_official	381:5460fc57b6e4	312	using DMA mode.
mbed_official	381:5460fc57b6e4	313	The HAL_USART_TxCpltCallback(), HAL_USART_RxCpltCallback() and HAL_USART_TxRxCpltCallback() user callbacks
mbed_official	381:5460fc57b6e4	314	will be executed respectivelly at the end of the transmit or Receive process
mbed_official	381:5460fc57b6e4	315	The HAL_USART_ErrorCallback()user callback will be executed when a communication error is detected
mbed_official	381:5460fc57b6e4	316
mbed_official	381:5460fc57b6e4	317	(#) Blocking mode API's are :
mbed_official	381:5460fc57b6e4	318	(+) HAL_USART_Transmit()in simplex mode
mbed_official	381:5460fc57b6e4	319	(+) HAL_USART_Receive() in full duplex receive only
mbed_official	381:5460fc57b6e4	320	(+) HAL_USART_TransmitReceive() in full duplex mode
mbed_official	381:5460fc57b6e4	321
mbed_official	381:5460fc57b6e4	322	(#) Non-Blocking mode API's with Interrupt are :
mbed_official	381:5460fc57b6e4	323	(+) HAL_USART_Transmit_IT()in simplex mode
mbed_official	381:5460fc57b6e4	324	(+) HAL_USART_Receive_IT() in full duplex receive only
mbed_official	381:5460fc57b6e4	325	(+) HAL_USART_TransmitReceive_IT()in full duplex mode
mbed_official	381:5460fc57b6e4	326	(+) HAL_USART_IRQHandler()
mbed_official	381:5460fc57b6e4	327
mbed_official	381:5460fc57b6e4	328	(#) No-Blocking mode functions with DMA are :
mbed_official	381:5460fc57b6e4	329	(+) HAL_USART_Transmit_DMA()in simplex mode
mbed_official	381:5460fc57b6e4	330	(+) HAL_USART_Receive_DMA() in full duplex receive only
mbed_official	381:5460fc57b6e4	331	(+) HAL_USART_TransmitReceive_DMA() in full duplex mode
mbed_official	381:5460fc57b6e4	332	(+) HAL_USART_DMAPause()
mbed_official	381:5460fc57b6e4	333	(+) HAL_USART_DMAResume()
mbed_official	381:5460fc57b6e4	334	(+) HAL_USART_DMAStop()
mbed_official	381:5460fc57b6e4	335
mbed_official	381:5460fc57b6e4	336	(#) A set of Transfer Complete Callbacks are provided in No_Blocking mode:
mbed_official	381:5460fc57b6e4	337	(+) HAL_USART_TxCpltCallback()
mbed_official	381:5460fc57b6e4	338	(+) HAL_USART_RxCpltCallback()
mbed_official	381:5460fc57b6e4	339	(+) HAL_USART_TxHalfCpltCallback()
mbed_official	381:5460fc57b6e4	340	(+) HAL_USART_RxHalfCpltCallback()
mbed_official	381:5460fc57b6e4	341	(+) HAL_USART_ErrorCallback()
mbed_official	381:5460fc57b6e4	342	(+) HAL_USART_TxRxCpltCallback()
mbed_official	381:5460fc57b6e4	343
mbed_official	381:5460fc57b6e4	344	@endverbatim
mbed_official	381:5460fc57b6e4	345	* @{
mbed_official	381:5460fc57b6e4	346	*/
mbed_official	381:5460fc57b6e4	347
mbed_official	381:5460fc57b6e4	348	/**
mbed_official	381:5460fc57b6e4	349	* @brief Simplex Send an amount of data in blocking mode
mbed_official	381:5460fc57b6e4	350	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	351	* @param pTxData: pointer to data buffer
mbed_official	381:5460fc57b6e4	352	* @param Size: amount of data to be sent
mbed_official	381:5460fc57b6e4	353	* @param Timeout : Timeout duration
mbed_official	381:5460fc57b6e4	354	* @retval HAL status
mbed_official	381:5460fc57b6e4	355	*/
mbed_official	381:5460fc57b6e4	356	HAL_StatusTypeDef HAL_USART_Transmit(USART_HandleTypeDef husart, uint8_t pTxData, uint16_t Size, uint32_t Timeout)
mbed_official	381:5460fc57b6e4	357	{
mbed_official	381:5460fc57b6e4	358	uint16_t* tmp;
mbed_official	381:5460fc57b6e4	359
mbed_official	381:5460fc57b6e4	360	if(husart->State == HAL_USART_STATE_READY)
mbed_official	381:5460fc57b6e4	361	{
mbed_official	381:5460fc57b6e4	362	if((pTxData == HAL_NULL) \|\| (Size == 0))
mbed_official	381:5460fc57b6e4	363	{
mbed_official	381:5460fc57b6e4	364	return HAL_ERROR;
mbed_official	381:5460fc57b6e4	365	}
mbed_official	381:5460fc57b6e4	366
mbed_official	381:5460fc57b6e4	367	/* Process Locked */
mbed_official	381:5460fc57b6e4	368	__HAL_LOCK(husart);
mbed_official	381:5460fc57b6e4	369
mbed_official	381:5460fc57b6e4	370	husart->ErrorCode = HAL_USART_ERROR_NONE;
mbed_official	381:5460fc57b6e4	371	husart->State = HAL_USART_STATE_BUSY_TX;
mbed_official	381:5460fc57b6e4	372
mbed_official	381:5460fc57b6e4	373	husart->TxXferSize = Size;
mbed_official	381:5460fc57b6e4	374	husart->TxXferCount = Size;
mbed_official	381:5460fc57b6e4	375
mbed_official	381:5460fc57b6e4	376	/* Check the remaining data to be sent */
mbed_official	381:5460fc57b6e4	377	while(husart->TxXferCount > 0)
mbed_official	381:5460fc57b6e4	378	{
mbed_official	381:5460fc57b6e4	379	husart->TxXferCount--;
mbed_official	381:5460fc57b6e4	380	if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, Timeout) != HAL_OK)
mbed_official	381:5460fc57b6e4	381	{
mbed_official	381:5460fc57b6e4	382	return HAL_TIMEOUT;
mbed_official	381:5460fc57b6e4	383	}
mbed_official	381:5460fc57b6e4	384	if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
mbed_official	381:5460fc57b6e4	385	{
mbed_official	381:5460fc57b6e4	386	tmp = (uint16_t*) pTxData;
mbed_official	381:5460fc57b6e4	387	husart->Instance->TDR = (*tmp & (uint16_t)0x01FF);
mbed_official	381:5460fc57b6e4	388	pTxData += 2;
mbed_official	381:5460fc57b6e4	389	}
mbed_official	381:5460fc57b6e4	390	else
mbed_official	381:5460fc57b6e4	391	{
mbed_official	381:5460fc57b6e4	392	husart->Instance->TDR = (*pTxData++ & (uint8_t)0xFF);
mbed_official	381:5460fc57b6e4	393	}
mbed_official	381:5460fc57b6e4	394	}
mbed_official	381:5460fc57b6e4	395
mbed_official	381:5460fc57b6e4	396	if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, Timeout) != HAL_OK)
mbed_official	381:5460fc57b6e4	397	{
mbed_official	381:5460fc57b6e4	398	return HAL_TIMEOUT;
mbed_official	381:5460fc57b6e4	399	}
mbed_official	381:5460fc57b6e4	400
mbed_official	381:5460fc57b6e4	401	husart->State = HAL_USART_STATE_READY;
mbed_official	381:5460fc57b6e4	402
mbed_official	381:5460fc57b6e4	403	/* Process Unlocked */
mbed_official	381:5460fc57b6e4	404	__HAL_UNLOCK(husart);
mbed_official	381:5460fc57b6e4	405
mbed_official	381:5460fc57b6e4	406	return HAL_OK;
mbed_official	381:5460fc57b6e4	407	}
mbed_official	381:5460fc57b6e4	408	else
mbed_official	381:5460fc57b6e4	409	{
mbed_official	381:5460fc57b6e4	410	return HAL_BUSY;
mbed_official	381:5460fc57b6e4	411	}
mbed_official	381:5460fc57b6e4	412	}
mbed_official	381:5460fc57b6e4	413
mbed_official	381:5460fc57b6e4	414	/**
mbed_official	381:5460fc57b6e4	415	* @brief Receive an amount of data in blocking mode
mbed_official	381:5460fc57b6e4	416	* To receive synchronous data, dummy data are simultaneously transmitted
mbed_official	381:5460fc57b6e4	417	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	418	* @param pRxData: pointer to data buffer
mbed_official	381:5460fc57b6e4	419	* @param Size: amount of data to be received
mbed_official	381:5460fc57b6e4	420	* @param Timeout : Timeout duration
mbed_official	381:5460fc57b6e4	421	* @retval HAL status
mbed_official	381:5460fc57b6e4	422	*/
mbed_official	381:5460fc57b6e4	423	HAL_StatusTypeDef HAL_USART_Receive(USART_HandleTypeDef husart, uint8_t pRxData, uint16_t Size, uint32_t Timeout)
mbed_official	381:5460fc57b6e4	424	{
mbed_official	381:5460fc57b6e4	425	uint16_t* tmp;
mbed_official	381:5460fc57b6e4	426	uint16_t uhMask;
mbed_official	381:5460fc57b6e4	427
mbed_official	381:5460fc57b6e4	428	if(husart->State == HAL_USART_STATE_READY)
mbed_official	381:5460fc57b6e4	429	{
mbed_official	381:5460fc57b6e4	430	if((pRxData == HAL_NULL) \|\| (Size == 0))
mbed_official	381:5460fc57b6e4	431	{
mbed_official	381:5460fc57b6e4	432	return HAL_ERROR;
mbed_official	381:5460fc57b6e4	433	}
mbed_official	381:5460fc57b6e4	434	/* Process Locked */
mbed_official	381:5460fc57b6e4	435	__HAL_LOCK(husart);
mbed_official	381:5460fc57b6e4	436
mbed_official	381:5460fc57b6e4	437	husart->ErrorCode = HAL_USART_ERROR_NONE;
mbed_official	381:5460fc57b6e4	438	husart->State = HAL_USART_STATE_BUSY_RX;
mbed_official	381:5460fc57b6e4	439
mbed_official	381:5460fc57b6e4	440	husart->RxXferSize = Size;
mbed_official	381:5460fc57b6e4	441	husart->RxXferCount = Size;
mbed_official	381:5460fc57b6e4	442
mbed_official	381:5460fc57b6e4	443	/* Computation of USART mask to apply to RDR register */
mbed_official	381:5460fc57b6e4	444	__HAL_USART_MASK_COMPUTATION(husart);
mbed_official	381:5460fc57b6e4	445	uhMask = husart->Mask;
mbed_official	381:5460fc57b6e4	446
mbed_official	381:5460fc57b6e4	447	/* as long as data have to be received */
mbed_official	381:5460fc57b6e4	448	while(husart->RxXferCount > 0)
mbed_official	381:5460fc57b6e4	449	{
mbed_official	381:5460fc57b6e4	450	husart->RxXferCount--;
mbed_official	381:5460fc57b6e4	451
mbed_official	381:5460fc57b6e4	452	/* Wait until TC flag is set to send dummy byte in order to generate the
mbed_official	381:5460fc57b6e4	453	* clock for the slave to send data.
mbed_official	381:5460fc57b6e4	454	* Whatever the frame length (7, 8 or 9-bit long), the same dummy value
mbed_official	381:5460fc57b6e4	455	* can be written for all the cases. */
mbed_official	381:5460fc57b6e4	456	if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, Timeout) != HAL_OK)
mbed_official	381:5460fc57b6e4	457	{
mbed_official	381:5460fc57b6e4	458	return HAL_TIMEOUT;
mbed_official	381:5460fc57b6e4	459	}
mbed_official	381:5460fc57b6e4	460	husart->Instance->TDR = (DUMMY_DATA & (uint16_t)0x0FF);
mbed_official	381:5460fc57b6e4	461
mbed_official	381:5460fc57b6e4	462	/* Wait for RXNE Flag */
mbed_official	381:5460fc57b6e4	463	if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, Timeout) != HAL_OK)
mbed_official	381:5460fc57b6e4	464	{
mbed_official	381:5460fc57b6e4	465	return HAL_TIMEOUT;
mbed_official	381:5460fc57b6e4	466	}
mbed_official	381:5460fc57b6e4	467
mbed_official	381:5460fc57b6e4	468	if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
mbed_official	381:5460fc57b6e4	469	{
mbed_official	381:5460fc57b6e4	470	tmp = (uint16_t*) pRxData ;
mbed_official	381:5460fc57b6e4	471	*tmp = (uint16_t)(husart->Instance->RDR & uhMask);
mbed_official	381:5460fc57b6e4	472	pRxData +=2;
mbed_official	381:5460fc57b6e4	473	}
mbed_official	381:5460fc57b6e4	474	else
mbed_official	381:5460fc57b6e4	475	{
mbed_official	381:5460fc57b6e4	476	*pRxData++ = (uint8_t)(husart->Instance->RDR & (uint8_t)uhMask);
mbed_official	381:5460fc57b6e4	477	}
mbed_official	381:5460fc57b6e4	478	}
mbed_official	381:5460fc57b6e4	479
mbed_official	381:5460fc57b6e4	480	husart->State = HAL_USART_STATE_READY;
mbed_official	381:5460fc57b6e4	481
mbed_official	381:5460fc57b6e4	482	/* Process Unlocked */
mbed_official	381:5460fc57b6e4	483	__HAL_UNLOCK(husart);
mbed_official	381:5460fc57b6e4	484
mbed_official	381:5460fc57b6e4	485	return HAL_OK;
mbed_official	381:5460fc57b6e4	486	}
mbed_official	381:5460fc57b6e4	487	else
mbed_official	381:5460fc57b6e4	488	{
mbed_official	381:5460fc57b6e4	489	return HAL_BUSY;
mbed_official	381:5460fc57b6e4	490	}
mbed_official	381:5460fc57b6e4	491	}
mbed_official	381:5460fc57b6e4	492
mbed_official	381:5460fc57b6e4	493	/**
mbed_official	381:5460fc57b6e4	494	* @brief Full-Duplex Send and Receive an amount of data in blocking mode
mbed_official	381:5460fc57b6e4	495	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	496	* @param pTxData: pointer to TX data buffer
mbed_official	381:5460fc57b6e4	497	* @param pRxData: pointer to RX data buffer
mbed_official	381:5460fc57b6e4	498	* @param Size: amount of data to be sent (same amount to be received)
mbed_official	381:5460fc57b6e4	499	* @param Timeout : Timeout duration
mbed_official	381:5460fc57b6e4	500	* @retval HAL status
mbed_official	381:5460fc57b6e4	501	*/
mbed_official	381:5460fc57b6e4	502	HAL_StatusTypeDef HAL_USART_TransmitReceive(USART_HandleTypeDef husart, uint8_t pTxData, uint8_t *pRxData, uint16_t Size, uint32_t Timeout)
mbed_official	381:5460fc57b6e4	503	{
mbed_official	381:5460fc57b6e4	504	uint16_t* tmp;
mbed_official	381:5460fc57b6e4	505	uint16_t uhMask;
mbed_official	381:5460fc57b6e4	506
mbed_official	381:5460fc57b6e4	507	if(husart->State == HAL_USART_STATE_READY)
mbed_official	381:5460fc57b6e4	508	{
mbed_official	381:5460fc57b6e4	509	if((pTxData == HAL_NULL) \|\| (pRxData == HAL_NULL) \|\| (Size == 0))
mbed_official	381:5460fc57b6e4	510	{
mbed_official	381:5460fc57b6e4	511	return HAL_ERROR;
mbed_official	381:5460fc57b6e4	512	}
mbed_official	381:5460fc57b6e4	513	/* Process Locked */
mbed_official	381:5460fc57b6e4	514	__HAL_LOCK(husart);
mbed_official	381:5460fc57b6e4	515
mbed_official	381:5460fc57b6e4	516	husart->ErrorCode = HAL_USART_ERROR_NONE;
mbed_official	381:5460fc57b6e4	517	husart->State = HAL_USART_STATE_BUSY_RX;
mbed_official	381:5460fc57b6e4	518
mbed_official	381:5460fc57b6e4	519	husart->RxXferSize = Size;
mbed_official	381:5460fc57b6e4	520	husart->TxXferSize = Size;
mbed_official	381:5460fc57b6e4	521	husart->TxXferCount = Size;
mbed_official	381:5460fc57b6e4	522	husart->RxXferCount = Size;
mbed_official	381:5460fc57b6e4	523
mbed_official	381:5460fc57b6e4	524	/* Computation of USART mask to apply to RDR register */
mbed_official	381:5460fc57b6e4	525	__HAL_USART_MASK_COMPUTATION(husart);
mbed_official	381:5460fc57b6e4	526	uhMask = husart->Mask;
mbed_official	381:5460fc57b6e4	527
mbed_official	381:5460fc57b6e4	528	/* Check the remain data to be sent */
mbed_official	381:5460fc57b6e4	529	while(husart->TxXferCount > 0)
mbed_official	381:5460fc57b6e4	530	{
mbed_official	381:5460fc57b6e4	531	husart->TxXferCount--;
mbed_official	381:5460fc57b6e4	532	husart->RxXferCount--;
mbed_official	381:5460fc57b6e4	533
mbed_official	381:5460fc57b6e4	534	/* Wait until TC flag is set to send data */
mbed_official	381:5460fc57b6e4	535	if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, Timeout) != HAL_OK)
mbed_official	381:5460fc57b6e4	536	{
mbed_official	381:5460fc57b6e4	537	return HAL_TIMEOUT;
mbed_official	381:5460fc57b6e4	538	}
mbed_official	381:5460fc57b6e4	539	if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
mbed_official	381:5460fc57b6e4	540	{
mbed_official	381:5460fc57b6e4	541	tmp = (uint16_t*) pTxData;
mbed_official	381:5460fc57b6e4	542	husart->Instance->TDR = (*tmp & uhMask);
mbed_official	381:5460fc57b6e4	543	pTxData += 2;
mbed_official	381:5460fc57b6e4	544	}
mbed_official	381:5460fc57b6e4	545	else
mbed_official	381:5460fc57b6e4	546	{
mbed_official	381:5460fc57b6e4	547	husart->Instance->TDR = (*pTxData++ & (uint8_t)uhMask);
mbed_official	381:5460fc57b6e4	548	}
mbed_official	381:5460fc57b6e4	549
mbed_official	381:5460fc57b6e4	550	/* Wait for RXNE Flag */
mbed_official	381:5460fc57b6e4	551	if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, Timeout) != HAL_OK)
mbed_official	381:5460fc57b6e4	552	{
mbed_official	381:5460fc57b6e4	553	return HAL_TIMEOUT;
mbed_official	381:5460fc57b6e4	554	}
mbed_official	381:5460fc57b6e4	555
mbed_official	381:5460fc57b6e4	556	if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
mbed_official	381:5460fc57b6e4	557	{
mbed_official	381:5460fc57b6e4	558	tmp = (uint16_t*) pRxData ;
mbed_official	381:5460fc57b6e4	559	*tmp = (uint16_t)(husart->Instance->RDR & uhMask);
mbed_official	381:5460fc57b6e4	560	pRxData +=2;
mbed_official	381:5460fc57b6e4	561	}
mbed_official	381:5460fc57b6e4	562	else
mbed_official	381:5460fc57b6e4	563	{
mbed_official	381:5460fc57b6e4	564	*pRxData++ = (uint8_t)(husart->Instance->RDR & (uint8_t)uhMask);
mbed_official	381:5460fc57b6e4	565	}
mbed_official	381:5460fc57b6e4	566	}
mbed_official	381:5460fc57b6e4	567
mbed_official	381:5460fc57b6e4	568	husart->State = HAL_USART_STATE_READY;
mbed_official	381:5460fc57b6e4	569
mbed_official	381:5460fc57b6e4	570	/* Process Unlocked */
mbed_official	381:5460fc57b6e4	571	__HAL_UNLOCK(husart);
mbed_official	381:5460fc57b6e4	572
mbed_official	381:5460fc57b6e4	573	return HAL_OK;
mbed_official	381:5460fc57b6e4	574	}
mbed_official	381:5460fc57b6e4	575	else
mbed_official	381:5460fc57b6e4	576	{
mbed_official	381:5460fc57b6e4	577	return HAL_BUSY;
mbed_official	381:5460fc57b6e4	578	}
mbed_official	381:5460fc57b6e4	579	}
mbed_official	381:5460fc57b6e4	580
mbed_official	381:5460fc57b6e4	581	/**
mbed_official	381:5460fc57b6e4	582	* @brief Send an amount of data in interrupt mode
mbed_official	381:5460fc57b6e4	583	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	584	* @param pTxData: pointer to data buffer
mbed_official	381:5460fc57b6e4	585	* @param Size: amount of data to be sent
mbed_official	381:5460fc57b6e4	586	* @retval HAL status
mbed_official	381:5460fc57b6e4	587	*/
mbed_official	381:5460fc57b6e4	588	HAL_StatusTypeDef HAL_USART_Transmit_IT(USART_HandleTypeDef husart, uint8_t pTxData, uint16_t Size)
mbed_official	381:5460fc57b6e4	589	{
mbed_official	381:5460fc57b6e4	590	if(husart->State == HAL_USART_STATE_READY)
mbed_official	381:5460fc57b6e4	591	{
mbed_official	381:5460fc57b6e4	592	if((pTxData == HAL_NULL) \|\| (Size == 0))
mbed_official	381:5460fc57b6e4	593	{
mbed_official	381:5460fc57b6e4	594	return HAL_ERROR;
mbed_official	381:5460fc57b6e4	595	}
mbed_official	381:5460fc57b6e4	596
mbed_official	381:5460fc57b6e4	597	/* Process Locked */
mbed_official	381:5460fc57b6e4	598	__HAL_LOCK(husart);
mbed_official	381:5460fc57b6e4	599
mbed_official	381:5460fc57b6e4	600	husart->pTxBuffPtr = pTxData;
mbed_official	381:5460fc57b6e4	601	husart->TxXferSize = Size;
mbed_official	381:5460fc57b6e4	602	husart->TxXferCount = Size;
mbed_official	381:5460fc57b6e4	603
mbed_official	381:5460fc57b6e4	604	husart->ErrorCode = HAL_USART_ERROR_NONE;
mbed_official	381:5460fc57b6e4	605	husart->State = HAL_USART_STATE_BUSY_TX;
mbed_official	381:5460fc57b6e4	606
mbed_official	381:5460fc57b6e4	607	/* The USART Error Interrupts: (Frame error, noise error, overrun error)
mbed_official	381:5460fc57b6e4	608	are not managed by the USART Transmit Process to avoid the overrun interrupt
mbed_official	381:5460fc57b6e4	609	when the usart mode is configured for transmit and receive "USART_MODE_TX_RX"
mbed_official	381:5460fc57b6e4	610	to benefit for the frame error and noise interrupts the usart mode should be
mbed_official	381:5460fc57b6e4	611	configured only for transmit "USART_MODE_TX" */
mbed_official	381:5460fc57b6e4	612
mbed_official	381:5460fc57b6e4	613	/* Process Unlocked */
mbed_official	381:5460fc57b6e4	614	__HAL_UNLOCK(husart);
mbed_official	381:5460fc57b6e4	615
mbed_official	381:5460fc57b6e4	616	/* Enable the USART Transmit Data Register Empty Interrupt */
mbed_official	381:5460fc57b6e4	617	__HAL_USART_ENABLE_IT(husart, USART_IT_TXE);
mbed_official	381:5460fc57b6e4	618
mbed_official	381:5460fc57b6e4	619	return HAL_OK;
mbed_official	381:5460fc57b6e4	620	}
mbed_official	381:5460fc57b6e4	621	else
mbed_official	381:5460fc57b6e4	622	{
mbed_official	381:5460fc57b6e4	623	return HAL_BUSY;
mbed_official	381:5460fc57b6e4	624	}
mbed_official	381:5460fc57b6e4	625	}
mbed_official	381:5460fc57b6e4	626
mbed_official	381:5460fc57b6e4	627	/**
mbed_official	381:5460fc57b6e4	628	* @brief Receive an amount of data in blocking mode
mbed_official	381:5460fc57b6e4	629	* To receive synchronous data, dummy data are simultaneously transmitted
mbed_official	381:5460fc57b6e4	630	* @param husart: usart handle
mbed_official	381:5460fc57b6e4	631	* @param pRxData: pointer to data buffer
mbed_official	381:5460fc57b6e4	632	* @param Size: amount of data to be received
mbed_official	381:5460fc57b6e4	633	* @retval HAL status
mbed_official	381:5460fc57b6e4	634	*/
mbed_official	381:5460fc57b6e4	635	HAL_StatusTypeDef HAL_USART_Receive_IT(USART_HandleTypeDef husart, uint8_t pRxData, uint16_t Size)
mbed_official	381:5460fc57b6e4	636	{
mbed_official	381:5460fc57b6e4	637	if(husart->State == HAL_USART_STATE_READY)
mbed_official	381:5460fc57b6e4	638	{
mbed_official	381:5460fc57b6e4	639	if((pRxData == HAL_NULL) \|\| (Size == 0))
mbed_official	381:5460fc57b6e4	640	{
mbed_official	381:5460fc57b6e4	641	return HAL_ERROR;
mbed_official	381:5460fc57b6e4	642	}
mbed_official	381:5460fc57b6e4	643	/* Process Locked */
mbed_official	381:5460fc57b6e4	644	__HAL_LOCK(husart);
mbed_official	381:5460fc57b6e4	645
mbed_official	381:5460fc57b6e4	646	husart->pRxBuffPtr = pRxData;
mbed_official	381:5460fc57b6e4	647	husart->RxXferSize = Size;
mbed_official	381:5460fc57b6e4	648	husart->RxXferCount = Size;
mbed_official	381:5460fc57b6e4	649
mbed_official	381:5460fc57b6e4	650	__HAL_USART_MASK_COMPUTATION(husart);
mbed_official	381:5460fc57b6e4	651
mbed_official	381:5460fc57b6e4	652	husart->ErrorCode = HAL_USART_ERROR_NONE;
mbed_official	381:5460fc57b6e4	653	husart->State = HAL_USART_STATE_BUSY_RX;
mbed_official	381:5460fc57b6e4	654
mbed_official	381:5460fc57b6e4	655	/* Enable the USART Parity Error Interrupt */
mbed_official	381:5460fc57b6e4	656	__HAL_USART_ENABLE_IT(husart, USART_IT_PE);
mbed_official	381:5460fc57b6e4	657
mbed_official	381:5460fc57b6e4	658	/* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
mbed_official	381:5460fc57b6e4	659	__HAL_USART_ENABLE_IT(husart, USART_IT_ERR);
mbed_official	381:5460fc57b6e4	660
mbed_official	381:5460fc57b6e4	661	/* Enable the USART Data Register not empty Interrupt */
mbed_official	381:5460fc57b6e4	662	__HAL_USART_ENABLE_IT(husart, USART_IT_RXNE);
mbed_official	381:5460fc57b6e4	663
mbed_official	381:5460fc57b6e4	664	/* Process Unlocked */
mbed_official	381:5460fc57b6e4	665	__HAL_UNLOCK(husart);
mbed_official	381:5460fc57b6e4	666
mbed_official	381:5460fc57b6e4	667
mbed_official	381:5460fc57b6e4	668	/* Send dummy byte in order to generate the clock for the Slave to send the next data */
mbed_official	381:5460fc57b6e4	669	if(husart->Init.WordLength == USART_WORDLENGTH_9B)
mbed_official	381:5460fc57b6e4	670	{
mbed_official	381:5460fc57b6e4	671	husart->Instance->TDR = (DUMMY_DATA & (uint16_t)0x01FF);
mbed_official	381:5460fc57b6e4	672	}
mbed_official	381:5460fc57b6e4	673	else
mbed_official	381:5460fc57b6e4	674	{
mbed_official	381:5460fc57b6e4	675	husart->Instance->TDR = (DUMMY_DATA & (uint16_t)0x00FF);
mbed_official	381:5460fc57b6e4	676	}
mbed_official	381:5460fc57b6e4	677
mbed_official	381:5460fc57b6e4	678	return HAL_OK;
mbed_official	381:5460fc57b6e4	679	}
mbed_official	381:5460fc57b6e4	680	else
mbed_official	381:5460fc57b6e4	681	{
mbed_official	381:5460fc57b6e4	682	return HAL_BUSY;
mbed_official	381:5460fc57b6e4	683	}
mbed_official	381:5460fc57b6e4	684	}
mbed_official	381:5460fc57b6e4	685
mbed_official	381:5460fc57b6e4	686	/**
mbed_official	381:5460fc57b6e4	687	* @brief Full-Duplex Send and Receive an amount of data in interrupt mode
mbed_official	381:5460fc57b6e4	688	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	689	* @param pTxData: pointer to TX data buffer
mbed_official	381:5460fc57b6e4	690	* @param pRxData: pointer to RX data buffer
mbed_official	381:5460fc57b6e4	691	* @param Size: amount of data to be sent (same amount to be received)
mbed_official	381:5460fc57b6e4	692	* @retval HAL status
mbed_official	381:5460fc57b6e4	693	*/
mbed_official	381:5460fc57b6e4	694	HAL_StatusTypeDef HAL_USART_TransmitReceive_IT(USART_HandleTypeDef husart, uint8_t pTxData, uint8_t *pRxData, uint16_t Size)
mbed_official	381:5460fc57b6e4	695	{
mbed_official	381:5460fc57b6e4	696
mbed_official	381:5460fc57b6e4	697	if(husart->State == HAL_USART_STATE_READY)
mbed_official	381:5460fc57b6e4	698	{
mbed_official	381:5460fc57b6e4	699	if((pTxData == HAL_NULL) \|\| (pRxData == HAL_NULL) \|\| (Size == 0))
mbed_official	381:5460fc57b6e4	700	{
mbed_official	381:5460fc57b6e4	701	return HAL_ERROR;
mbed_official	381:5460fc57b6e4	702	}
mbed_official	381:5460fc57b6e4	703	/* Process Locked */
mbed_official	381:5460fc57b6e4	704	__HAL_LOCK(husart);
mbed_official	381:5460fc57b6e4	705
mbed_official	381:5460fc57b6e4	706	husart->pRxBuffPtr = pRxData;
mbed_official	381:5460fc57b6e4	707	husart->RxXferSize = Size;
mbed_official	381:5460fc57b6e4	708	husart->RxXferCount = Size;
mbed_official	381:5460fc57b6e4	709	husart->pTxBuffPtr = pTxData;
mbed_official	381:5460fc57b6e4	710	husart->TxXferSize = Size;
mbed_official	381:5460fc57b6e4	711	husart->TxXferCount = Size;
mbed_official	381:5460fc57b6e4	712
mbed_official	381:5460fc57b6e4	713	/* Computation of USART mask to apply to RDR register */
mbed_official	381:5460fc57b6e4	714	__HAL_USART_MASK_COMPUTATION(husart);
mbed_official	381:5460fc57b6e4	715
mbed_official	381:5460fc57b6e4	716	husart->ErrorCode = HAL_USART_ERROR_NONE;
mbed_official	381:5460fc57b6e4	717	husart->State = HAL_USART_STATE_BUSY_TX_RX;
mbed_official	381:5460fc57b6e4	718
mbed_official	381:5460fc57b6e4	719	/* Enable the USART Data Register not empty Interrupt */
mbed_official	381:5460fc57b6e4	720	__HAL_USART_ENABLE_IT(husart, USART_IT_RXNE);
mbed_official	381:5460fc57b6e4	721
mbed_official	381:5460fc57b6e4	722	/* Enable the USART Parity Error Interrupt */
mbed_official	381:5460fc57b6e4	723	__HAL_USART_ENABLE_IT(husart, USART_IT_PE);
mbed_official	381:5460fc57b6e4	724
mbed_official	381:5460fc57b6e4	725	/* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
mbed_official	381:5460fc57b6e4	726	__HAL_USART_ENABLE_IT(husart, USART_IT_ERR);
mbed_official	381:5460fc57b6e4	727
mbed_official	381:5460fc57b6e4	728	/* Process Unlocked */
mbed_official	381:5460fc57b6e4	729	__HAL_UNLOCK(husart);
mbed_official	381:5460fc57b6e4	730
mbed_official	381:5460fc57b6e4	731	/* Enable the USART Transmit Data Register Empty Interrupt */
mbed_official	381:5460fc57b6e4	732	__HAL_USART_ENABLE_IT(husart, USART_IT_TXE);
mbed_official	381:5460fc57b6e4	733
mbed_official	381:5460fc57b6e4	734	return HAL_OK;
mbed_official	381:5460fc57b6e4	735	}
mbed_official	381:5460fc57b6e4	736	else
mbed_official	381:5460fc57b6e4	737	{
mbed_official	381:5460fc57b6e4	738	return HAL_BUSY;
mbed_official	381:5460fc57b6e4	739	}
mbed_official	381:5460fc57b6e4	740
mbed_official	381:5460fc57b6e4	741	}
mbed_official	381:5460fc57b6e4	742
mbed_official	381:5460fc57b6e4	743	/**
mbed_official	381:5460fc57b6e4	744	* @brief Send an amount of data in DMA mode
mbed_official	381:5460fc57b6e4	745	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	746	* @param pTxData: pointer to data buffer
mbed_official	381:5460fc57b6e4	747	* @param Size: amount of data to be sent
mbed_official	381:5460fc57b6e4	748	* @retval HAL status
mbed_official	381:5460fc57b6e4	749	*/
mbed_official	381:5460fc57b6e4	750	HAL_StatusTypeDef HAL_USART_Transmit_DMA(USART_HandleTypeDef husart, uint8_t pTxData, uint16_t Size)
mbed_official	381:5460fc57b6e4	751	{
mbed_official	381:5460fc57b6e4	752	uint32_t *tmp;
mbed_official	381:5460fc57b6e4	753
mbed_official	381:5460fc57b6e4	754	if(husart->State == HAL_USART_STATE_READY)
mbed_official	381:5460fc57b6e4	755	{
mbed_official	381:5460fc57b6e4	756	if((pTxData == HAL_NULL) \|\| (Size == 0))
mbed_official	381:5460fc57b6e4	757	{
mbed_official	381:5460fc57b6e4	758	return HAL_ERROR;
mbed_official	381:5460fc57b6e4	759	}
mbed_official	381:5460fc57b6e4	760	/* Process Locked */
mbed_official	381:5460fc57b6e4	761	__HAL_LOCK(husart);
mbed_official	381:5460fc57b6e4	762
mbed_official	381:5460fc57b6e4	763	husart->pTxBuffPtr = pTxData;
mbed_official	381:5460fc57b6e4	764	husart->TxXferSize = Size;
mbed_official	381:5460fc57b6e4	765	husart->TxXferCount = Size;
mbed_official	381:5460fc57b6e4	766
mbed_official	381:5460fc57b6e4	767	husart->ErrorCode = HAL_USART_ERROR_NONE;
mbed_official	381:5460fc57b6e4	768	husart->State = HAL_USART_STATE_BUSY_TX;
mbed_official	381:5460fc57b6e4	769
mbed_official	381:5460fc57b6e4	770	/* Set the USART DMA transfer complete callback */
mbed_official	381:5460fc57b6e4	771	husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt;
mbed_official	381:5460fc57b6e4	772
mbed_official	381:5460fc57b6e4	773	/* Set the USART DMA Half transfer complete callback */
mbed_official	381:5460fc57b6e4	774	husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt;
mbed_official	381:5460fc57b6e4	775
mbed_official	381:5460fc57b6e4	776	/* Set the DMA error callback */
mbed_official	381:5460fc57b6e4	777	husart->hdmatx->XferErrorCallback = USART_DMAError;
mbed_official	381:5460fc57b6e4	778
mbed_official	381:5460fc57b6e4	779	/* Enable the USART transmit DMA channel */
mbed_official	381:5460fc57b6e4	780	tmp = (uint32_t*)&pTxData;
mbed_official	381:5460fc57b6e4	781	HAL_DMA_Start_IT(husart->hdmatx, (uint32_t)tmp, (uint32_t)&husart->Instance->TDR, Size);
mbed_official	381:5460fc57b6e4	782
mbed_official	381:5460fc57b6e4	783	/* Enable the DMA transfer for transmit request by setting the DMAT bit
mbed_official	381:5460fc57b6e4	784	in the USART CR3 register */
mbed_official	381:5460fc57b6e4	785	husart->Instance->CR3 \|= USART_CR3_DMAT;
mbed_official	381:5460fc57b6e4	786
mbed_official	381:5460fc57b6e4	787	/* Process Unlocked */
mbed_official	381:5460fc57b6e4	788	__HAL_UNLOCK(husart);
mbed_official	381:5460fc57b6e4	789
mbed_official	381:5460fc57b6e4	790	return HAL_OK;
mbed_official	381:5460fc57b6e4	791	}
mbed_official	381:5460fc57b6e4	792	else
mbed_official	381:5460fc57b6e4	793	{
mbed_official	381:5460fc57b6e4	794	return HAL_BUSY;
mbed_official	381:5460fc57b6e4	795	}
mbed_official	381:5460fc57b6e4	796	}
mbed_official	381:5460fc57b6e4	797
mbed_official	381:5460fc57b6e4	798	/**
mbed_official	381:5460fc57b6e4	799	* @brief Receive an amount of data in DMA mode
mbed_official	381:5460fc57b6e4	800	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	801	* @param pRxData: pointer to data buffer
mbed_official	381:5460fc57b6e4	802	* @param Size: amount of data to be received
mbed_official	381:5460fc57b6e4	803	* @note When the USART parity is enabled (PCE = 1), the received data contain
mbed_official	381:5460fc57b6e4	804	* the parity bit (MSB position)
mbed_official	381:5460fc57b6e4	805	* @retval HAL status
mbed_official	381:5460fc57b6e4	806	* @note The USART DMA transmit channel must be configured in order to generate the clock for the slave.
mbed_official	381:5460fc57b6e4	807	*/
mbed_official	381:5460fc57b6e4	808	HAL_StatusTypeDef HAL_USART_Receive_DMA(USART_HandleTypeDef husart, uint8_t pRxData, uint16_t Size)
mbed_official	381:5460fc57b6e4	809	{
mbed_official	381:5460fc57b6e4	810	uint32_t *tmp;
mbed_official	381:5460fc57b6e4	811
mbed_official	381:5460fc57b6e4	812	if(husart->State == HAL_USART_STATE_READY)
mbed_official	381:5460fc57b6e4	813	{
mbed_official	381:5460fc57b6e4	814	if((pRxData == HAL_NULL) \|\| (Size == 0))
mbed_official	381:5460fc57b6e4	815	{
mbed_official	381:5460fc57b6e4	816	return HAL_ERROR;
mbed_official	381:5460fc57b6e4	817	}
mbed_official	381:5460fc57b6e4	818
mbed_official	381:5460fc57b6e4	819	/* Process Locked */
mbed_official	381:5460fc57b6e4	820	__HAL_LOCK(husart);
mbed_official	381:5460fc57b6e4	821
mbed_official	381:5460fc57b6e4	822	husart->pRxBuffPtr = pRxData;
mbed_official	381:5460fc57b6e4	823	husart->RxXferSize = Size;
mbed_official	381:5460fc57b6e4	824	husart->pTxBuffPtr = pRxData;
mbed_official	381:5460fc57b6e4	825	husart->TxXferSize = Size;
mbed_official	381:5460fc57b6e4	826
mbed_official	381:5460fc57b6e4	827	husart->ErrorCode = HAL_USART_ERROR_NONE;
mbed_official	381:5460fc57b6e4	828	husart->State = HAL_USART_STATE_BUSY_RX;
mbed_official	381:5460fc57b6e4	829
mbed_official	381:5460fc57b6e4	830	/* Set the USART DMA Rx transfer complete callback */
mbed_official	381:5460fc57b6e4	831	husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt;
mbed_official	381:5460fc57b6e4	832
mbed_official	381:5460fc57b6e4	833	/* Set the USART DMA Half transfer complete callback */
mbed_official	381:5460fc57b6e4	834	husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt;
mbed_official	381:5460fc57b6e4	835
mbed_official	381:5460fc57b6e4	836	/* Set the USART DMA Rx transfer error callback */
mbed_official	381:5460fc57b6e4	837	husart->hdmarx->XferErrorCallback = USART_DMAError;
mbed_official	381:5460fc57b6e4	838
mbed_official	381:5460fc57b6e4	839	/* Enable the USART receive DMA channel */
mbed_official	381:5460fc57b6e4	840	tmp = (uint32_t*)&pRxData;
mbed_official	381:5460fc57b6e4	841	HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->RDR, (uint32_t)tmp, Size);
mbed_official	381:5460fc57b6e4	842
mbed_official	381:5460fc57b6e4	843	/* Enable the USART transmit DMA channel: the transmit channel is used in order
mbed_official	381:5460fc57b6e4	844	to generate in the non-blocking mode the clock to the slave device,
mbed_official	381:5460fc57b6e4	845	this mode isn't a simplex receive mode but a full-duplex receive mode */
mbed_official	381:5460fc57b6e4	846	tmp = (uint32_t*)&pRxData;
mbed_official	381:5460fc57b6e4	847	HAL_DMA_Start_IT(husart->hdmatx, (uint32_t)tmp, (uint32_t)&husart->Instance->TDR, Size);
mbed_official	381:5460fc57b6e4	848
mbed_official	381:5460fc57b6e4	849	/* Enable the DMA transfer for the receiver request by setting the DMAR bit
mbed_official	381:5460fc57b6e4	850	in the USART CR3 register */
mbed_official	381:5460fc57b6e4	851	husart->Instance->CR3 \|= USART_CR3_DMAR;
mbed_official	381:5460fc57b6e4	852
mbed_official	381:5460fc57b6e4	853	/* Enable the DMA transfer for transmit request by setting the DMAT bit
mbed_official	381:5460fc57b6e4	854	in the USART CR3 register */
mbed_official	381:5460fc57b6e4	855	husart->Instance->CR3 \|= USART_CR3_DMAT;
mbed_official	381:5460fc57b6e4	856
mbed_official	381:5460fc57b6e4	857	/* Process Unlocked */
mbed_official	381:5460fc57b6e4	858	__HAL_UNLOCK(husart);
mbed_official	381:5460fc57b6e4	859
mbed_official	381:5460fc57b6e4	860	return HAL_OK;
mbed_official	381:5460fc57b6e4	861	}
mbed_official	381:5460fc57b6e4	862	else
mbed_official	381:5460fc57b6e4	863	{
mbed_official	381:5460fc57b6e4	864	return HAL_BUSY;
mbed_official	381:5460fc57b6e4	865	}
mbed_official	381:5460fc57b6e4	866	}
mbed_official	381:5460fc57b6e4	867
mbed_official	381:5460fc57b6e4	868	/**
mbed_official	381:5460fc57b6e4	869	* @brief Full-Duplex Transmit Receive an amount of data in non blocking mode
mbed_official	381:5460fc57b6e4	870	* @param husart: usart handle
mbed_official	381:5460fc57b6e4	871	* @param pTxData: pointer to TX data buffer
mbed_official	381:5460fc57b6e4	872	* @param pRxData: pointer to RX data buffer
mbed_official	381:5460fc57b6e4	873	* @param Size: amount of data to be received/sent
mbed_official	381:5460fc57b6e4	874	* @note When the USART parity is enabled (PCE = 1) the data received contain the parity bit.
mbed_official	381:5460fc57b6e4	875	* @retval HAL status
mbed_official	381:5460fc57b6e4	876	*/
mbed_official	381:5460fc57b6e4	877	HAL_StatusTypeDef HAL_USART_TransmitReceive_DMA(USART_HandleTypeDef husart, uint8_t pTxData, uint8_t *pRxData, uint16_t Size)
mbed_official	381:5460fc57b6e4	878	{
mbed_official	381:5460fc57b6e4	879	uint32_t *tmp;
mbed_official	381:5460fc57b6e4	880
mbed_official	381:5460fc57b6e4	881	if(husart->State == HAL_USART_STATE_READY)
mbed_official	381:5460fc57b6e4	882	{
mbed_official	381:5460fc57b6e4	883	if((pTxData == HAL_NULL) \|\| (pRxData == HAL_NULL) \|\| (Size == 0))
mbed_official	381:5460fc57b6e4	884	{
mbed_official	381:5460fc57b6e4	885	return HAL_ERROR;
mbed_official	381:5460fc57b6e4	886	}
mbed_official	381:5460fc57b6e4	887	/* Process Locked */
mbed_official	381:5460fc57b6e4	888	__HAL_LOCK(husart);
mbed_official	381:5460fc57b6e4	889
mbed_official	381:5460fc57b6e4	890	husart->pRxBuffPtr = pRxData;
mbed_official	381:5460fc57b6e4	891	husart->RxXferSize = Size;
mbed_official	381:5460fc57b6e4	892	husart->pTxBuffPtr = pTxData;
mbed_official	381:5460fc57b6e4	893	husart->TxXferSize = Size;
mbed_official	381:5460fc57b6e4	894
mbed_official	381:5460fc57b6e4	895	husart->ErrorCode = HAL_USART_ERROR_NONE;
mbed_official	381:5460fc57b6e4	896	husart->State = HAL_USART_STATE_BUSY_TX_RX;
mbed_official	381:5460fc57b6e4	897
mbed_official	381:5460fc57b6e4	898	/* Set the USART DMA Rx transfer complete callback */
mbed_official	381:5460fc57b6e4	899	husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt;
mbed_official	381:5460fc57b6e4	900
mbed_official	381:5460fc57b6e4	901	/* Set the USART DMA Half transfer complete callback */
mbed_official	381:5460fc57b6e4	902	husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt;
mbed_official	381:5460fc57b6e4	903
mbed_official	381:5460fc57b6e4	904	/* Set the USART DMA Tx transfer complete callback */
mbed_official	381:5460fc57b6e4	905	husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt;
mbed_official	381:5460fc57b6e4	906
mbed_official	381:5460fc57b6e4	907	/* Set the USART DMA Half transfer complete callback */
mbed_official	381:5460fc57b6e4	908	husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt;
mbed_official	381:5460fc57b6e4	909
mbed_official	381:5460fc57b6e4	910	/* Set the USART DMA Tx transfer error callback */
mbed_official	381:5460fc57b6e4	911	husart->hdmatx->XferErrorCallback = USART_DMAError;
mbed_official	381:5460fc57b6e4	912
mbed_official	381:5460fc57b6e4	913	/* Set the USART DMA Rx transfer error callback */
mbed_official	381:5460fc57b6e4	914	husart->hdmarx->XferErrorCallback = USART_DMAError;
mbed_official	381:5460fc57b6e4	915
mbed_official	381:5460fc57b6e4	916	/* Enable the USART receive DMA channel */
mbed_official	381:5460fc57b6e4	917	tmp = (uint32_t*)&pRxData;
mbed_official	381:5460fc57b6e4	918	HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->RDR, (uint32_t)tmp, Size);
mbed_official	381:5460fc57b6e4	919
mbed_official	381:5460fc57b6e4	920	/* Enable the USART transmit DMA channel */
mbed_official	381:5460fc57b6e4	921	tmp = (uint32_t*)&pTxData;
mbed_official	381:5460fc57b6e4	922	HAL_DMA_Start_IT(husart->hdmatx, (uint32_t)tmp, (uint32_t)&husart->Instance->TDR, Size);
mbed_official	381:5460fc57b6e4	923
mbed_official	381:5460fc57b6e4	924	/* Enable the DMA transfer for the receiver request by setting the DMAR bit
mbed_official	381:5460fc57b6e4	925	in the USART CR3 register */
mbed_official	381:5460fc57b6e4	926	husart->Instance->CR3 \|= USART_CR3_DMAR;
mbed_official	381:5460fc57b6e4	927
mbed_official	381:5460fc57b6e4	928	/* Enable the DMA transfer for transmit request by setting the DMAT bit
mbed_official	381:5460fc57b6e4	929	in the USART CR3 register */
mbed_official	381:5460fc57b6e4	930	husart->Instance->CR3 \|= USART_CR3_DMAT;
mbed_official	381:5460fc57b6e4	931
mbed_official	381:5460fc57b6e4	932	/* Process Unlocked */
mbed_official	381:5460fc57b6e4	933	__HAL_UNLOCK(husart);
mbed_official	381:5460fc57b6e4	934
mbed_official	381:5460fc57b6e4	935	return HAL_OK;
mbed_official	381:5460fc57b6e4	936	}
mbed_official	381:5460fc57b6e4	937	else
mbed_official	381:5460fc57b6e4	938	{
mbed_official	381:5460fc57b6e4	939	return HAL_BUSY;
mbed_official	381:5460fc57b6e4	940	}
mbed_official	381:5460fc57b6e4	941	}
mbed_official	381:5460fc57b6e4	942
mbed_official	381:5460fc57b6e4	943	/**
mbed_official	381:5460fc57b6e4	944	* @brief Pauses the DMA Transfer.
mbed_official	381:5460fc57b6e4	945	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	946	* @retval None
mbed_official	381:5460fc57b6e4	947	*/
mbed_official	381:5460fc57b6e4	948	HAL_StatusTypeDef HAL_USART_DMAPause(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	949	{
mbed_official	381:5460fc57b6e4	950	/* Process Locked */
mbed_official	381:5460fc57b6e4	951	__HAL_LOCK(husart);
mbed_official	381:5460fc57b6e4	952
mbed_official	381:5460fc57b6e4	953	if(husart->State == HAL_USART_STATE_BUSY_TX)
mbed_official	381:5460fc57b6e4	954	{
mbed_official	381:5460fc57b6e4	955	/* Disable the USART DMA Tx request */
mbed_official	381:5460fc57b6e4	956	husart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAT);
mbed_official	381:5460fc57b6e4	957	}
mbed_official	381:5460fc57b6e4	958	else if(husart->State == HAL_USART_STATE_BUSY_RX)
mbed_official	381:5460fc57b6e4	959	{
mbed_official	381:5460fc57b6e4	960	/* Disable the USART DMA Rx request */
mbed_official	381:5460fc57b6e4	961	husart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAR);
mbed_official	381:5460fc57b6e4	962	}
mbed_official	381:5460fc57b6e4	963	else if(husart->State == HAL_USART_STATE_BUSY_TX_RX)
mbed_official	381:5460fc57b6e4	964	{
mbed_official	381:5460fc57b6e4	965	/* Disable the USART DMA Tx request */
mbed_official	381:5460fc57b6e4	966	husart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAT);
mbed_official	381:5460fc57b6e4	967	/* Disable the USART DMA Rx request */
mbed_official	381:5460fc57b6e4	968	husart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAR);
mbed_official	381:5460fc57b6e4	969	}
mbed_official	381:5460fc57b6e4	970
mbed_official	381:5460fc57b6e4	971	/* Process Unlocked */
mbed_official	381:5460fc57b6e4	972	__HAL_UNLOCK(husart);
mbed_official	381:5460fc57b6e4	973
mbed_official	381:5460fc57b6e4	974	return HAL_OK;
mbed_official	381:5460fc57b6e4	975	}
mbed_official	381:5460fc57b6e4	976
mbed_official	381:5460fc57b6e4	977	/**
mbed_official	381:5460fc57b6e4	978	* @brief Resumes the DMA Transfer.
mbed_official	381:5460fc57b6e4	979	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	980	* @retval None
mbed_official	381:5460fc57b6e4	981	*/
mbed_official	381:5460fc57b6e4	982	HAL_StatusTypeDef HAL_USART_DMAResume(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	983	{
mbed_official	381:5460fc57b6e4	984	/* Process Locked */
mbed_official	381:5460fc57b6e4	985	__HAL_LOCK(husart);
mbed_official	381:5460fc57b6e4	986
mbed_official	381:5460fc57b6e4	987	if(husart->State == HAL_USART_STATE_BUSY_TX)
mbed_official	381:5460fc57b6e4	988	{
mbed_official	381:5460fc57b6e4	989	/* Enable the USART DMA Tx request */
mbed_official	381:5460fc57b6e4	990	husart->Instance->CR3 \|= USART_CR3_DMAT;
mbed_official	381:5460fc57b6e4	991	}
mbed_official	381:5460fc57b6e4	992	else if(husart->State == HAL_USART_STATE_BUSY_RX)
mbed_official	381:5460fc57b6e4	993	{
mbed_official	381:5460fc57b6e4	994	/* Enable the USART DMA Rx request */
mbed_official	381:5460fc57b6e4	995	husart->Instance->CR3 \|= USART_CR3_DMAR;
mbed_official	381:5460fc57b6e4	996	}
mbed_official	381:5460fc57b6e4	997	else if(husart->State == HAL_USART_STATE_BUSY_TX_RX)
mbed_official	381:5460fc57b6e4	998	{
mbed_official	381:5460fc57b6e4	999	/* Enable the USART DMA Rx request before the DMA Tx request */
mbed_official	381:5460fc57b6e4	1000	husart->Instance->CR3 \|= USART_CR3_DMAR;
mbed_official	381:5460fc57b6e4	1001	/* Enable the USART DMA Tx request */
mbed_official	381:5460fc57b6e4	1002	husart->Instance->CR3 \|= USART_CR3_DMAT;
mbed_official	381:5460fc57b6e4	1003	}
mbed_official	381:5460fc57b6e4	1004
mbed_official	381:5460fc57b6e4	1005	/* If the USART peripheral is still not enabled, enable it */
mbed_official	381:5460fc57b6e4	1006	if ((husart->Instance->CR1 & USART_CR1_UE) == 0)
mbed_official	381:5460fc57b6e4	1007	{
mbed_official	381:5460fc57b6e4	1008	/* Enable USART peripheral */
mbed_official	381:5460fc57b6e4	1009	__HAL_USART_ENABLE(husart);
mbed_official	381:5460fc57b6e4	1010	}
mbed_official	381:5460fc57b6e4	1011
mbed_official	381:5460fc57b6e4	1012	/* Process Unlocked */
mbed_official	381:5460fc57b6e4	1013	__HAL_UNLOCK(husart);
mbed_official	381:5460fc57b6e4	1014
mbed_official	381:5460fc57b6e4	1015	return HAL_OK;
mbed_official	381:5460fc57b6e4	1016	}
mbed_official	381:5460fc57b6e4	1017
mbed_official	381:5460fc57b6e4	1018	/**
mbed_official	381:5460fc57b6e4	1019	* @brief Stops the DMA Transfer.
mbed_official	381:5460fc57b6e4	1020	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	1021	* @retval None
mbed_official	381:5460fc57b6e4	1022	*/
mbed_official	381:5460fc57b6e4	1023	HAL_StatusTypeDef HAL_USART_DMAStop(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	1024	{
mbed_official	381:5460fc57b6e4	1025	/* Process Locked */
mbed_official	381:5460fc57b6e4	1026	__HAL_LOCK(husart);
mbed_official	381:5460fc57b6e4	1027
mbed_official	381:5460fc57b6e4	1028	/* Disable the USART Tx/Rx DMA requests */
mbed_official	381:5460fc57b6e4	1029	husart->Instance->CR3 &= ~USART_CR3_DMAT;
mbed_official	381:5460fc57b6e4	1030	husart->Instance->CR3 &= ~USART_CR3_DMAR;
mbed_official	381:5460fc57b6e4	1031
mbed_official	381:5460fc57b6e4	1032	/* Abort the USART DMA tx channel */
mbed_official	381:5460fc57b6e4	1033	if(husart->hdmatx != HAL_NULL)
mbed_official	381:5460fc57b6e4	1034	{
mbed_official	381:5460fc57b6e4	1035	HAL_DMA_Abort(husart->hdmatx);
mbed_official	381:5460fc57b6e4	1036	}
mbed_official	381:5460fc57b6e4	1037	/* Abort the USART DMA rx channel */
mbed_official	381:5460fc57b6e4	1038	if(husart->hdmarx != HAL_NULL)
mbed_official	381:5460fc57b6e4	1039	{
mbed_official	381:5460fc57b6e4	1040	HAL_DMA_Abort(husart->hdmarx);
mbed_official	381:5460fc57b6e4	1041	}
mbed_official	381:5460fc57b6e4	1042
mbed_official	381:5460fc57b6e4	1043	/* Disable USART peripheral */
mbed_official	381:5460fc57b6e4	1044	__HAL_USART_DISABLE(husart);
mbed_official	381:5460fc57b6e4	1045
mbed_official	381:5460fc57b6e4	1046	husart->State = HAL_USART_STATE_READY;
mbed_official	381:5460fc57b6e4	1047
mbed_official	381:5460fc57b6e4	1048	/* Process Unlocked */
mbed_official	381:5460fc57b6e4	1049	__HAL_UNLOCK(husart);
mbed_official	381:5460fc57b6e4	1050
mbed_official	381:5460fc57b6e4	1051	return HAL_OK;
mbed_official	381:5460fc57b6e4	1052	}
mbed_official	381:5460fc57b6e4	1053
mbed_official	381:5460fc57b6e4	1054	/**
mbed_official	381:5460fc57b6e4	1055	* @brief This function handles USART interrupt request.
mbed_official	381:5460fc57b6e4	1056	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	1057	* @retval None
mbed_official	381:5460fc57b6e4	1058	*/
mbed_official	381:5460fc57b6e4	1059	void HAL_USART_IRQHandler(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	1060	{
mbed_official	381:5460fc57b6e4	1061
mbed_official	381:5460fc57b6e4	1062	/* USART parity error interrupt occured ------------------------------------*/
mbed_official	381:5460fc57b6e4	1063	if((__HAL_USART_GET_IT(husart, USART_IT_PE) != RESET) && (__HAL_USART_GET_IT_SOURCE(husart, USART_IT_PE) != RESET))
mbed_official	381:5460fc57b6e4	1064	{
mbed_official	381:5460fc57b6e4	1065	__HAL_USART_CLEAR_IT(husart, USART_IT_PE);
mbed_official	381:5460fc57b6e4	1066	husart->ErrorCode \|= HAL_USART_ERROR_PE;
mbed_official	381:5460fc57b6e4	1067	/* Set the USART state ready to be able to start again the process */
mbed_official	381:5460fc57b6e4	1068	husart->State = HAL_USART_STATE_READY;
mbed_official	381:5460fc57b6e4	1069	}
mbed_official	381:5460fc57b6e4	1070
mbed_official	381:5460fc57b6e4	1071	/* USART frame error interrupt occured -------------------------------------*/
mbed_official	381:5460fc57b6e4	1072	if((__HAL_USART_GET_IT(husart, USART_IT_FE) != RESET) && (__HAL_USART_GET_IT_SOURCE(husart, USART_IT_ERR) != RESET))
mbed_official	381:5460fc57b6e4	1073	{
mbed_official	381:5460fc57b6e4	1074	__HAL_USART_CLEAR_IT(husart, USART_IT_FE);
mbed_official	381:5460fc57b6e4	1075	husart->ErrorCode \|= HAL_USART_ERROR_FE;
mbed_official	381:5460fc57b6e4	1076	/* Set the USART state ready to be able to start again the process */
mbed_official	381:5460fc57b6e4	1077	husart->State = HAL_USART_STATE_READY;
mbed_official	381:5460fc57b6e4	1078	}
mbed_official	381:5460fc57b6e4	1079
mbed_official	381:5460fc57b6e4	1080	/* USART noise error interrupt occured -------------------------------------*/
mbed_official	381:5460fc57b6e4	1081	if((__HAL_USART_GET_IT(husart, USART_IT_NE) != RESET) && (__HAL_USART_GET_IT_SOURCE(husart, USART_IT_ERR) != RESET))
mbed_official	381:5460fc57b6e4	1082	{
mbed_official	381:5460fc57b6e4	1083	__HAL_USART_CLEAR_IT(husart, USART_IT_NE);
mbed_official	381:5460fc57b6e4	1084	husart->ErrorCode \|= HAL_USART_ERROR_NE;
mbed_official	381:5460fc57b6e4	1085	/* Set the USART state ready to be able to start again the process */
mbed_official	381:5460fc57b6e4	1086	husart->State = HAL_USART_STATE_READY;
mbed_official	381:5460fc57b6e4	1087	}
mbed_official	381:5460fc57b6e4	1088
mbed_official	381:5460fc57b6e4	1089	/* USART Over-Run interrupt occured ----------------------------------------*/
mbed_official	381:5460fc57b6e4	1090	if((__HAL_USART_GET_IT(husart, USART_IT_ORE) != RESET) && (__HAL_USART_GET_IT_SOURCE(husart, USART_IT_ERR) != RESET))
mbed_official	381:5460fc57b6e4	1091	{
mbed_official	381:5460fc57b6e4	1092	__HAL_USART_CLEAR_IT(husart, USART_IT_ORE);
mbed_official	381:5460fc57b6e4	1093	husart->ErrorCode \|= HAL_USART_ERROR_ORE;
mbed_official	381:5460fc57b6e4	1094	/* Set the USART state ready to be able to start again the process */
mbed_official	381:5460fc57b6e4	1095	husart->State = HAL_USART_STATE_READY;
mbed_official	381:5460fc57b6e4	1096	}
mbed_official	381:5460fc57b6e4	1097
mbed_official	381:5460fc57b6e4	1098	/* Call USART Error Call back function if need be --------------------------*/
mbed_official	381:5460fc57b6e4	1099	if(husart->ErrorCode != HAL_USART_ERROR_NONE)
mbed_official	381:5460fc57b6e4	1100	{
mbed_official	381:5460fc57b6e4	1101	HAL_USART_ErrorCallback(husart);
mbed_official	381:5460fc57b6e4	1102	}
mbed_official	381:5460fc57b6e4	1103
mbed_official	381:5460fc57b6e4	1104	/* USART in mode Receiver --------------------------------------------------*/
mbed_official	381:5460fc57b6e4	1105	if((__HAL_USART_GET_IT(husart, USART_IT_RXNE) != RESET) && (__HAL_USART_GET_IT_SOURCE(husart, USART_IT_RXNE) != RESET))
mbed_official	381:5460fc57b6e4	1106	{
mbed_official	381:5460fc57b6e4	1107	if(husart->State == HAL_USART_STATE_BUSY_RX)
mbed_official	381:5460fc57b6e4	1108	{
mbed_official	381:5460fc57b6e4	1109	USART_Receive_IT(husart);
mbed_official	381:5460fc57b6e4	1110	}
mbed_official	381:5460fc57b6e4	1111	else
mbed_official	381:5460fc57b6e4	1112	{
mbed_official	381:5460fc57b6e4	1113	USART_TransmitReceive_IT(husart);
mbed_official	381:5460fc57b6e4	1114	}
mbed_official	381:5460fc57b6e4	1115	}
mbed_official	381:5460fc57b6e4	1116
mbed_official	381:5460fc57b6e4	1117	/* USART in mode Transmitter -----------------------------------------------*/
mbed_official	381:5460fc57b6e4	1118	if((__HAL_USART_GET_IT(husart, USART_IT_TXE) != RESET) &&(__HAL_USART_GET_IT_SOURCE(husart, USART_IT_TXE) != RESET))
mbed_official	381:5460fc57b6e4	1119	{
mbed_official	381:5460fc57b6e4	1120	if(husart->State == HAL_USART_STATE_BUSY_TX)
mbed_official	381:5460fc57b6e4	1121	{
mbed_official	381:5460fc57b6e4	1122	USART_Transmit_IT(husart);
mbed_official	381:5460fc57b6e4	1123	}
mbed_official	381:5460fc57b6e4	1124	else
mbed_official	381:5460fc57b6e4	1125	{
mbed_official	381:5460fc57b6e4	1126	USART_TransmitReceive_IT(husart);
mbed_official	381:5460fc57b6e4	1127	}
mbed_official	381:5460fc57b6e4	1128	}
mbed_official	381:5460fc57b6e4	1129
mbed_official	381:5460fc57b6e4	1130	/* USART in mode Transmitter (transmission end) -----------------------------*/
mbed_official	381:5460fc57b6e4	1131	if((__HAL_USART_GET_IT(husart, USART_IT_TC) != RESET) &&(__HAL_USART_GET_IT_SOURCE(husart, USART_IT_TC) != RESET))
mbed_official	381:5460fc57b6e4	1132	{
mbed_official	381:5460fc57b6e4	1133	USART_EndTransmit_IT(husart);
mbed_official	381:5460fc57b6e4	1134	}
mbed_official	381:5460fc57b6e4	1135
mbed_official	381:5460fc57b6e4	1136	}
mbed_official	381:5460fc57b6e4	1137
mbed_official	381:5460fc57b6e4	1138
mbed_official	381:5460fc57b6e4	1139	/**
mbed_official	381:5460fc57b6e4	1140	* @brief Tx Transfer completed callbacks
mbed_official	381:5460fc57b6e4	1141	* @param husart: usart handle
mbed_official	381:5460fc57b6e4	1142	* @retval None
mbed_official	381:5460fc57b6e4	1143	*/
mbed_official	381:5460fc57b6e4	1144	__weak void HAL_USART_TxCpltCallback(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	1145	{
mbed_official	381:5460fc57b6e4	1146	/* NOTE : This function should not be modified, when the callback is needed,
mbed_official	381:5460fc57b6e4	1147	the HAL_USART_TxCpltCallback can be implemented in the user file
mbed_official	381:5460fc57b6e4	1148	*/
mbed_official	381:5460fc57b6e4	1149	}
mbed_official	381:5460fc57b6e4	1150
mbed_official	381:5460fc57b6e4	1151	/**
mbed_official	381:5460fc57b6e4	1152	* @brief Tx Half Transfer completed callbacks.
mbed_official	381:5460fc57b6e4	1153	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	1154	* @retval None
mbed_official	381:5460fc57b6e4	1155	*/
mbed_official	381:5460fc57b6e4	1156	__weak void HAL_USART_TxHalfCpltCallback(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	1157	{
mbed_official	381:5460fc57b6e4	1158	/* NOTE: This function should not be modified, when the callback is needed,
mbed_official	381:5460fc57b6e4	1159	the HAL_USART_TxHalfCpltCallback can be implemented in the user file
mbed_official	381:5460fc57b6e4	1160	*/
mbed_official	381:5460fc57b6e4	1161	}
mbed_official	381:5460fc57b6e4	1162
mbed_official	381:5460fc57b6e4	1163	/**
mbed_official	381:5460fc57b6e4	1164	* @brief Rx Transfer completed callbacks.
mbed_official	381:5460fc57b6e4	1165	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	1166	* @retval None
mbed_official	381:5460fc57b6e4	1167	*/
mbed_official	381:5460fc57b6e4	1168	__weak void HAL_USART_RxCpltCallback(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	1169	{
mbed_official	381:5460fc57b6e4	1170	/* NOTE: This function should not be modified, when the callback is needed,
mbed_official	381:5460fc57b6e4	1171	the HAL_USART_RxCpltCallback can be implemented in the user file
mbed_official	381:5460fc57b6e4	1172	*/
mbed_official	381:5460fc57b6e4	1173	}
mbed_official	381:5460fc57b6e4	1174
mbed_official	381:5460fc57b6e4	1175	/**
mbed_official	381:5460fc57b6e4	1176	* @brief Rx Half Transfer completed callbacks
mbed_official	381:5460fc57b6e4	1177	* @param husart: usart handle
mbed_official	381:5460fc57b6e4	1178	* @retval None
mbed_official	381:5460fc57b6e4	1179	*/
mbed_official	381:5460fc57b6e4	1180	__weak void HAL_USART_RxHalfCpltCallback(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	1181	{
mbed_official	381:5460fc57b6e4	1182	/* NOTE : This function should not be modified, when the callback is needed,
mbed_official	381:5460fc57b6e4	1183	the HAL_USART_RxHalfCpltCallback can be implemented in the user file
mbed_official	381:5460fc57b6e4	1184	*/
mbed_official	381:5460fc57b6e4	1185	}
mbed_official	381:5460fc57b6e4	1186
mbed_official	381:5460fc57b6e4	1187	/**
mbed_official	381:5460fc57b6e4	1188	* @brief Tx/Rx Transfers completed callback for the non-blocking process
mbed_official	381:5460fc57b6e4	1189	* @param husart: usart handle
mbed_official	381:5460fc57b6e4	1190	* @retval None
mbed_official	381:5460fc57b6e4	1191	*/
mbed_official	381:5460fc57b6e4	1192	__weak void HAL_USART_TxRxCpltCallback(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	1193	{
mbed_official	381:5460fc57b6e4	1194	/* NOTE : This function should not be modified, when the callback is needed,
mbed_official	381:5460fc57b6e4	1195	the HAL_USART_TxRxCpltCallback can be implemented in the user file
mbed_official	381:5460fc57b6e4	1196	*/
mbed_official	381:5460fc57b6e4	1197	}
mbed_official	381:5460fc57b6e4	1198
mbed_official	381:5460fc57b6e4	1199	/**
mbed_official	381:5460fc57b6e4	1200	* @brief USART error callbacks
mbed_official	381:5460fc57b6e4	1201	* @param husart: usart handle
mbed_official	381:5460fc57b6e4	1202	* @retval None
mbed_official	381:5460fc57b6e4	1203	*/
mbed_official	381:5460fc57b6e4	1204	__weak void HAL_USART_ErrorCallback(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	1205	{
mbed_official	381:5460fc57b6e4	1206	/* NOTE : This function should not be modified, when the callback is needed,
mbed_official	381:5460fc57b6e4	1207	the HAL_USART_ErrorCallback can be implemented in the user file
mbed_official	381:5460fc57b6e4	1208	*/
mbed_official	381:5460fc57b6e4	1209	}
mbed_official	381:5460fc57b6e4	1210
mbed_official	381:5460fc57b6e4	1211	/**
mbed_official	381:5460fc57b6e4	1212	* @}
mbed_official	381:5460fc57b6e4	1213	*/
mbed_official	381:5460fc57b6e4	1214
mbed_official	381:5460fc57b6e4	1215	/** @defgroup USART_Exported_Functions_Group3 Peripheral Control functions
mbed_official	381:5460fc57b6e4	1216	* @brief USART control functions
mbed_official	381:5460fc57b6e4	1217	*
mbed_official	381:5460fc57b6e4	1218	@verbatim
mbed_official	381:5460fc57b6e4	1219	===============================================================================
mbed_official	381:5460fc57b6e4	1220	##### Peripheral Control functions #####
mbed_official	381:5460fc57b6e4	1221	===============================================================================
mbed_official	381:5460fc57b6e4	1222	[..]
mbed_official	381:5460fc57b6e4	1223	This subsection provides a set of functions allowing to control the USART.
mbed_official	381:5460fc57b6e4	1224	(+) HAL_USART_GetState() API can be helpful to check in run-time the state of the USART peripheral.
mbed_official	381:5460fc57b6e4	1225	(+) USART_CheckIdleState() APi ensures that TEACK and/or REACK bits are set after initialization
mbed_official	381:5460fc57b6e4	1226
mbed_official	381:5460fc57b6e4	1227	@endverbatim
mbed_official	381:5460fc57b6e4	1228	* @{
mbed_official	381:5460fc57b6e4	1229	*/
mbed_official	381:5460fc57b6e4	1230
mbed_official	381:5460fc57b6e4	1231
mbed_official	381:5460fc57b6e4	1232
mbed_official	381:5460fc57b6e4	1233	/**
mbed_official	381:5460fc57b6e4	1234	* @brief return the USART state
mbed_official	381:5460fc57b6e4	1235	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	1236	* @retval HAL state
mbed_official	381:5460fc57b6e4	1237	*/
mbed_official	381:5460fc57b6e4	1238	HAL_USART_StateTypeDef HAL_USART_GetState(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	1239	{
mbed_official	381:5460fc57b6e4	1240	return husart->State;
mbed_official	381:5460fc57b6e4	1241	}
mbed_official	381:5460fc57b6e4	1242
mbed_official	381:5460fc57b6e4	1243	/**
mbed_official	381:5460fc57b6e4	1244	* @brief Return the USART error code
mbed_official	381:5460fc57b6e4	1245	* @param husart : pointer to a USART_HandleTypeDef structure that contains
mbed_official	381:5460fc57b6e4	1246	* the configuration information for the specified USART.
mbed_official	381:5460fc57b6e4	1247	* @retval USART Error Code
mbed_official	381:5460fc57b6e4	1248	*/
mbed_official	381:5460fc57b6e4	1249	uint32_t HAL_USART_GetError(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	1250	{
mbed_official	381:5460fc57b6e4	1251	return husart->ErrorCode;
mbed_official	381:5460fc57b6e4	1252	}
mbed_official	381:5460fc57b6e4	1253
mbed_official	381:5460fc57b6e4	1254	/**
mbed_official	381:5460fc57b6e4	1255	* @}
mbed_official	381:5460fc57b6e4	1256	*/
mbed_official	381:5460fc57b6e4	1257
mbed_official	381:5460fc57b6e4	1258	/**
mbed_official	381:5460fc57b6e4	1259	* @}
mbed_official	381:5460fc57b6e4	1260	*/
mbed_official	381:5460fc57b6e4	1261
mbed_official	381:5460fc57b6e4	1262	/** @defgroup USART_Private_Functions USART Private Functions
mbed_official	381:5460fc57b6e4	1263	* @{
mbed_official	381:5460fc57b6e4	1264	*/
mbed_official	381:5460fc57b6e4	1265
mbed_official	381:5460fc57b6e4	1266	/**
mbed_official	381:5460fc57b6e4	1267	* @brief DMA USART transmit process complete callback
mbed_official	381:5460fc57b6e4	1268	* @param hdma : DMA handle
mbed_official	381:5460fc57b6e4	1269	* @retval None
mbed_official	381:5460fc57b6e4	1270	*/
mbed_official	381:5460fc57b6e4	1271	static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
mbed_official	381:5460fc57b6e4	1272	{
mbed_official	381:5460fc57b6e4	1273	USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
mbed_official	381:5460fc57b6e4	1274
mbed_official	381:5460fc57b6e4	1275	husart->TxXferCount = 0;
mbed_official	381:5460fc57b6e4	1276
mbed_official	381:5460fc57b6e4	1277	if(husart->State == HAL_USART_STATE_BUSY_TX)
mbed_official	381:5460fc57b6e4	1278	{
mbed_official	381:5460fc57b6e4	1279	/* Wait for USART TC Flag */
mbed_official	381:5460fc57b6e4	1280	if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, USART_TXDMA_TIMEOUTVALUE) != HAL_OK)
mbed_official	381:5460fc57b6e4	1281	{
mbed_official	381:5460fc57b6e4	1282	/* Timeout Occured */
mbed_official	381:5460fc57b6e4	1283	HAL_USART_ErrorCallback(husart);
mbed_official	381:5460fc57b6e4	1284	}
mbed_official	381:5460fc57b6e4	1285	else
mbed_official	381:5460fc57b6e4	1286	{
mbed_official	381:5460fc57b6e4	1287	/* No Timeout */
mbed_official	381:5460fc57b6e4	1288	/* Disable the DMA transfer for transmit request by setting the DMAT bit
mbed_official	381:5460fc57b6e4	1289	in the USART CR3 register */
mbed_official	381:5460fc57b6e4	1290	husart->Instance->CR3 &= ~(USART_CR3_DMAT);
mbed_official	381:5460fc57b6e4	1291	husart->State= HAL_USART_STATE_READY;
mbed_official	381:5460fc57b6e4	1292	}
mbed_official	381:5460fc57b6e4	1293	}
mbed_official	381:5460fc57b6e4	1294	/* the usart state is HAL_USART_STATE_BUSY_TX_RX*/
mbed_official	381:5460fc57b6e4	1295	else
mbed_official	381:5460fc57b6e4	1296	{
mbed_official	381:5460fc57b6e4	1297	husart->State= HAL_USART_STATE_BUSY_RX;
mbed_official	381:5460fc57b6e4	1298	HAL_USART_TxCpltCallback(husart);
mbed_official	381:5460fc57b6e4	1299	}
mbed_official	381:5460fc57b6e4	1300	}
mbed_official	381:5460fc57b6e4	1301
mbed_official	381:5460fc57b6e4	1302
mbed_official	381:5460fc57b6e4	1303	/**
mbed_official	381:5460fc57b6e4	1304	* @brief DMA USART transmit process half complete callback
mbed_official	381:5460fc57b6e4	1305	* @param hdma : DMA handle
mbed_official	381:5460fc57b6e4	1306	* @retval None
mbed_official	381:5460fc57b6e4	1307	*/
mbed_official	381:5460fc57b6e4	1308	static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
mbed_official	381:5460fc57b6e4	1309	{
mbed_official	381:5460fc57b6e4	1310	USART_HandleTypeDef* husart = (USART_HandleTypeDef)((DMA_HandleTypeDef)hdma)->Parent;
mbed_official	381:5460fc57b6e4	1311
mbed_official	381:5460fc57b6e4	1312	HAL_USART_TxHalfCpltCallback(husart);
mbed_official	381:5460fc57b6e4	1313	}
mbed_official	381:5460fc57b6e4	1314
mbed_official	381:5460fc57b6e4	1315	/**
mbed_official	381:5460fc57b6e4	1316	* @brief DMA USART receive process complete callback
mbed_official	381:5460fc57b6e4	1317	* @param hdma : DMA handle
mbed_official	381:5460fc57b6e4	1318	* @retval None
mbed_official	381:5460fc57b6e4	1319	*/
mbed_official	381:5460fc57b6e4	1320	static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
mbed_official	381:5460fc57b6e4	1321	{
mbed_official	381:5460fc57b6e4	1322	USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
mbed_official	381:5460fc57b6e4	1323
mbed_official	381:5460fc57b6e4	1324	husart->RxXferCount = 0;
mbed_official	381:5460fc57b6e4	1325
mbed_official	381:5460fc57b6e4	1326	/* Disable the DMA RX transfer for the receiver request by resetting the DMAR bit
mbed_official	381:5460fc57b6e4	1327	in USART CR3 register */
mbed_official	381:5460fc57b6e4	1328	husart->Instance->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DMAR);
mbed_official	381:5460fc57b6e4	1329	/* similarly, disable the DMA TX transfer that was started to provide the
mbed_official	381:5460fc57b6e4	1330	clock to the slave device */
mbed_official	381:5460fc57b6e4	1331	husart->Instance->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DMAT);
mbed_official	381:5460fc57b6e4	1332
mbed_official	381:5460fc57b6e4	1333	husart->State= HAL_USART_STATE_READY;
mbed_official	381:5460fc57b6e4	1334
mbed_official	381:5460fc57b6e4	1335	HAL_USART_RxCpltCallback(husart);
mbed_official	381:5460fc57b6e4	1336	}
mbed_official	381:5460fc57b6e4	1337
mbed_official	381:5460fc57b6e4	1338	/**
mbed_official	381:5460fc57b6e4	1339	* @brief DMA USART receive process half complete callback
mbed_official	381:5460fc57b6e4	1340	* @param hdma : DMA handle
mbed_official	381:5460fc57b6e4	1341	* @retval None
mbed_official	381:5460fc57b6e4	1342	*/
mbed_official	381:5460fc57b6e4	1343	static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
mbed_official	381:5460fc57b6e4	1344	{
mbed_official	381:5460fc57b6e4	1345	USART_HandleTypeDef* husart = (USART_HandleTypeDef)((DMA_HandleTypeDef)hdma)->Parent;
mbed_official	381:5460fc57b6e4	1346
mbed_official	381:5460fc57b6e4	1347	HAL_USART_RxHalfCpltCallback(husart);
mbed_official	381:5460fc57b6e4	1348	}
mbed_official	381:5460fc57b6e4	1349
mbed_official	381:5460fc57b6e4	1350	/**
mbed_official	381:5460fc57b6e4	1351	* @brief DMA USART communication error callback
mbed_official	381:5460fc57b6e4	1352	* @param hdma : DMA handle
mbed_official	381:5460fc57b6e4	1353	* @retval None
mbed_official	381:5460fc57b6e4	1354	*/
mbed_official	381:5460fc57b6e4	1355	static void USART_DMAError(DMA_HandleTypeDef *hdma)
mbed_official	381:5460fc57b6e4	1356	{
mbed_official	381:5460fc57b6e4	1357	USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
mbed_official	381:5460fc57b6e4	1358
mbed_official	381:5460fc57b6e4	1359	husart->RxXferCount = 0;
mbed_official	381:5460fc57b6e4	1360	husart->TxXferCount = 0;
mbed_official	381:5460fc57b6e4	1361	husart->ErrorCode \|= HAL_USART_ERROR_DMA;
mbed_official	381:5460fc57b6e4	1362	husart->State= HAL_USART_STATE_READY;
mbed_official	381:5460fc57b6e4	1363
mbed_official	381:5460fc57b6e4	1364	HAL_USART_ErrorCallback(husart);
mbed_official	381:5460fc57b6e4	1365	}
mbed_official	381:5460fc57b6e4	1366
mbed_official	381:5460fc57b6e4	1367	/**
mbed_official	381:5460fc57b6e4	1368	* @brief This function handles USART Communication Timeout.
mbed_official	381:5460fc57b6e4	1369	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	1370	* @param Flag: specifies the USART flag to check.
mbed_official	381:5460fc57b6e4	1371	* @param Status: The new Flag status (SET or RESET).
mbed_official	381:5460fc57b6e4	1372	* @param Timeout: Timeout duration
mbed_official	381:5460fc57b6e4	1373	* @retval HAL status
mbed_official	381:5460fc57b6e4	1374	*/
mbed_official	381:5460fc57b6e4	1375	static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, uint32_t Timeout)
mbed_official	381:5460fc57b6e4	1376	{
mbed_official	381:5460fc57b6e4	1377	uint32_t tickstart = HAL_GetTick();
mbed_official	381:5460fc57b6e4	1378
mbed_official	381:5460fc57b6e4	1379	/* Wait until flag is set */
mbed_official	381:5460fc57b6e4	1380	if(Status == RESET)
mbed_official	381:5460fc57b6e4	1381	{
mbed_official	381:5460fc57b6e4	1382	while(__HAL_USART_GET_FLAG(husart, Flag) == RESET)
mbed_official	381:5460fc57b6e4	1383	{
mbed_official	381:5460fc57b6e4	1384	/* Check for the Timeout */
mbed_official	381:5460fc57b6e4	1385	if(Timeout != HAL_MAX_DELAY)
mbed_official	381:5460fc57b6e4	1386	{
mbed_official	381:5460fc57b6e4	1387	if((Timeout == 0) \|\| ((HAL_GetTick()-tickstart) > Timeout))
mbed_official	381:5460fc57b6e4	1388	{
mbed_official	381:5460fc57b6e4	1389	/* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
mbed_official	381:5460fc57b6e4	1390	__HAL_USART_DISABLE_IT(husart, USART_IT_TXE);
mbed_official	381:5460fc57b6e4	1391	__HAL_USART_DISABLE_IT(husart, USART_IT_RXNE);
mbed_official	381:5460fc57b6e4	1392	__HAL_USART_DISABLE_IT(husart, USART_IT_PE);
mbed_official	381:5460fc57b6e4	1393	__HAL_USART_DISABLE_IT(husart, USART_IT_ERR);
mbed_official	381:5460fc57b6e4	1394
mbed_official	381:5460fc57b6e4	1395	husart->State= HAL_USART_STATE_TIMEOUT;
mbed_official	381:5460fc57b6e4	1396
mbed_official	381:5460fc57b6e4	1397	/* Process Unlocked */
mbed_official	381:5460fc57b6e4	1398	__HAL_UNLOCK(husart);
mbed_official	381:5460fc57b6e4	1399
mbed_official	381:5460fc57b6e4	1400	return HAL_TIMEOUT;
mbed_official	381:5460fc57b6e4	1401	}
mbed_official	381:5460fc57b6e4	1402	}
mbed_official	381:5460fc57b6e4	1403	}
mbed_official	381:5460fc57b6e4	1404	}
mbed_official	381:5460fc57b6e4	1405	else
mbed_official	381:5460fc57b6e4	1406	{
mbed_official	381:5460fc57b6e4	1407	while(__HAL_USART_GET_FLAG(husart, Flag) != RESET)
mbed_official	381:5460fc57b6e4	1408	{
mbed_official	381:5460fc57b6e4	1409	/* Check for the Timeout */
mbed_official	381:5460fc57b6e4	1410	if(Timeout != HAL_MAX_DELAY)
mbed_official	381:5460fc57b6e4	1411	{
mbed_official	381:5460fc57b6e4	1412	if((Timeout == 0) \|\| ((HAL_GetTick()-tickstart) > Timeout))
mbed_official	381:5460fc57b6e4	1413	{
mbed_official	381:5460fc57b6e4	1414	/* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
mbed_official	381:5460fc57b6e4	1415	__HAL_USART_DISABLE_IT(husart, USART_IT_TXE);
mbed_official	381:5460fc57b6e4	1416	__HAL_USART_DISABLE_IT(husart, USART_IT_RXNE);
mbed_official	381:5460fc57b6e4	1417	__HAL_USART_DISABLE_IT(husart, USART_IT_PE);
mbed_official	381:5460fc57b6e4	1418	__HAL_USART_DISABLE_IT(husart, USART_IT_ERR);
mbed_official	381:5460fc57b6e4	1419
mbed_official	381:5460fc57b6e4	1420	husart->State= HAL_USART_STATE_TIMEOUT;
mbed_official	381:5460fc57b6e4	1421
mbed_official	381:5460fc57b6e4	1422	/* Process Unlocked */
mbed_official	381:5460fc57b6e4	1423	__HAL_UNLOCK(husart);
mbed_official	381:5460fc57b6e4	1424
mbed_official	381:5460fc57b6e4	1425	return HAL_TIMEOUT;
mbed_official	381:5460fc57b6e4	1426	}
mbed_official	381:5460fc57b6e4	1427	}
mbed_official	381:5460fc57b6e4	1428	}
mbed_official	381:5460fc57b6e4	1429	}
mbed_official	381:5460fc57b6e4	1430	return HAL_OK;
mbed_official	381:5460fc57b6e4	1431	}
mbed_official	381:5460fc57b6e4	1432
mbed_official	381:5460fc57b6e4	1433	/**
mbed_official	381:5460fc57b6e4	1434	* @brief Configure the USART peripheral
mbed_official	381:5460fc57b6e4	1435	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	1436	* @retval None
mbed_official	381:5460fc57b6e4	1437	*/
mbed_official	381:5460fc57b6e4	1438	static HAL_StatusTypeDef USART_SetConfig(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	1439	{
mbed_official	381:5460fc57b6e4	1440	uint32_t tmpreg = 0x0;
mbed_official	381:5460fc57b6e4	1441	USART_ClockSourceTypeDef clocksource = USART_CLOCKSOURCE_UNDEFINED;
mbed_official	381:5460fc57b6e4	1442	HAL_StatusTypeDef ret = HAL_OK;
mbed_official	381:5460fc57b6e4	1443
mbed_official	381:5460fc57b6e4	1444	/* Check the parameters */
mbed_official	381:5460fc57b6e4	1445	assert_param(IS_USART_POLARITY(husart->Init.CLKPolarity));
mbed_official	381:5460fc57b6e4	1446	assert_param(IS_USART_PHASE(husart->Init.CLKPhase));
mbed_official	381:5460fc57b6e4	1447	assert_param(IS_USART_LASTBIT(husart->Init.CLKLastBit));
mbed_official	381:5460fc57b6e4	1448	assert_param(IS_USART_BAUDRATE(husart->Init.BaudRate));
mbed_official	381:5460fc57b6e4	1449	assert_param(IS_USART_WORD_LENGTH(husart->Init.WordLength));
mbed_official	381:5460fc57b6e4	1450	assert_param(IS_USART_STOPBITS(husart->Init.StopBits));
mbed_official	381:5460fc57b6e4	1451	assert_param(IS_USART_PARITY(husart->Init.Parity));
mbed_official	381:5460fc57b6e4	1452	assert_param(IS_USART_MODE(husart->Init.Mode));
mbed_official	381:5460fc57b6e4	1453
mbed_official	381:5460fc57b6e4	1454
mbed_official	381:5460fc57b6e4	1455	/-------------------------- USART CR1 Configuration -----------------------/
mbed_official	381:5460fc57b6e4	1456	/* Clear M, PCE, PS, TE and RE bits and configure
mbed_official	381:5460fc57b6e4	1457	* the USART Word Length, Parity and Mode:
mbed_official	381:5460fc57b6e4	1458	* set the M bits according to husart->Init.WordLength value
mbed_official	381:5460fc57b6e4	1459	* set PCE and PS bits according to husart->Init.Parity value
mbed_official	381:5460fc57b6e4	1460	* set TE and RE bits according to husart->Init.Mode value */
mbed_official	381:5460fc57b6e4	1461	tmpreg = (uint32_t)husart->Init.WordLength \| husart->Init.Parity \| husart->Init.Mode;
mbed_official	381:5460fc57b6e4	1462	MODIFY_REG(husart->Instance->CR1, USART_CR1_FIELDS, tmpreg);
mbed_official	381:5460fc57b6e4	1463
mbed_official	381:5460fc57b6e4	1464	/---------------------------- USART CR2 Configuration ---------------------/
mbed_official	381:5460fc57b6e4	1465	/* Clear and configure the USART Clock, CPOL, CPHA, LBCL and STOP bits:
mbed_official	381:5460fc57b6e4	1466	* set CPOL bit according to husart->Init.CLKPolarity value
mbed_official	381:5460fc57b6e4	1467	* set CPHA bit according to husart->Init.CLKPhase value
mbed_official	381:5460fc57b6e4	1468	* set LBCL bit according to husart->Init.CLKLastBit value
mbed_official	381:5460fc57b6e4	1469	* set STOP[13:12] bits according to husart->Init.StopBits value */
mbed_official	381:5460fc57b6e4	1470	tmpreg = (uint32_t)(USART_CLOCK_ENABLED);
mbed_official	381:5460fc57b6e4	1471	tmpreg \|= ((uint32_t)husart->Init.CLKPolarity \| (uint32_t)husart->Init.CLKPhase);
mbed_official	381:5460fc57b6e4	1472	tmpreg \|= ((uint32_t)husart->Init.CLKLastBit \| (uint32_t)husart->Init.StopBits);
mbed_official	381:5460fc57b6e4	1473	MODIFY_REG(husart->Instance->CR2, USART_CR2_FIELDS, tmpreg);
mbed_official	381:5460fc57b6e4	1474
mbed_official	381:5460fc57b6e4	1475	/-------------------------- USART CR3 Configuration -----------------------/
mbed_official	381:5460fc57b6e4	1476	/* no CR3 register configuration */
mbed_official	381:5460fc57b6e4	1477
mbed_official	381:5460fc57b6e4	1478	/-------------------------- USART BRR Configuration -----------------------/
mbed_official	381:5460fc57b6e4	1479	__HAL_USART_GETCLOCKSOURCE(husart, clocksource);
mbed_official	381:5460fc57b6e4	1480	switch (clocksource)
mbed_official	381:5460fc57b6e4	1481	{
mbed_official	381:5460fc57b6e4	1482	case USART_CLOCKSOURCE_PCLK1:
mbed_official	381:5460fc57b6e4	1483	husart->Instance->BRR = (uint16_t)(HAL_RCC_GetPCLK1Freq() / husart->Init.BaudRate);
mbed_official	381:5460fc57b6e4	1484	break;
mbed_official	381:5460fc57b6e4	1485	case USART_CLOCKSOURCE_PCLK2:
mbed_official	381:5460fc57b6e4	1486	husart->Instance->BRR = (uint16_t)(HAL_RCC_GetPCLK2Freq() / husart->Init.BaudRate);
mbed_official	381:5460fc57b6e4	1487	break;
mbed_official	381:5460fc57b6e4	1488	case USART_CLOCKSOURCE_HSI:
mbed_official	381:5460fc57b6e4	1489	husart->Instance->BRR = (uint16_t)(HSI_VALUE / husart->Init.BaudRate);
mbed_official	381:5460fc57b6e4	1490	break;
mbed_official	381:5460fc57b6e4	1491	case USART_CLOCKSOURCE_SYSCLK:
mbed_official	381:5460fc57b6e4	1492	husart->Instance->BRR = (uint16_t)(HAL_RCC_GetSysClockFreq() / husart->Init.BaudRate);
mbed_official	381:5460fc57b6e4	1493	break;
mbed_official	381:5460fc57b6e4	1494	case USART_CLOCKSOURCE_LSE:
mbed_official	381:5460fc57b6e4	1495	husart->Instance->BRR = (uint16_t)(LSE_VALUE / husart->Init.BaudRate);
mbed_official	381:5460fc57b6e4	1496	break;
mbed_official	381:5460fc57b6e4	1497	case USART_CLOCKSOURCE_UNDEFINED:
mbed_official	381:5460fc57b6e4	1498	default:
mbed_official	381:5460fc57b6e4	1499	ret = HAL_ERROR;
mbed_official	381:5460fc57b6e4	1500	break;
mbed_official	381:5460fc57b6e4	1501	}
mbed_official	381:5460fc57b6e4	1502
mbed_official	381:5460fc57b6e4	1503	return ret;
mbed_official	381:5460fc57b6e4	1504	}
mbed_official	381:5460fc57b6e4	1505
mbed_official	381:5460fc57b6e4	1506
mbed_official	381:5460fc57b6e4	1507
mbed_official	381:5460fc57b6e4	1508	/**
mbed_official	381:5460fc57b6e4	1509	* @brief Check the USART Idle State
mbed_official	381:5460fc57b6e4	1510	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	1511	* @retval HAL status
mbed_official	381:5460fc57b6e4	1512	*/
mbed_official	381:5460fc57b6e4	1513	static HAL_StatusTypeDef USART_CheckIdleState(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	1514	{
mbed_official	381:5460fc57b6e4	1515	/* Initialize the USART ErrorCode */
mbed_official	381:5460fc57b6e4	1516	husart->ErrorCode = HAL_USART_ERROR_NONE;
mbed_official	381:5460fc57b6e4	1517
mbed_official	381:5460fc57b6e4	1518	/* Check if the Transmitter is enabled */
mbed_official	381:5460fc57b6e4	1519	if((husart->Instance->CR1 & USART_CR1_TE) == USART_CR1_TE)
mbed_official	381:5460fc57b6e4	1520	{
mbed_official	381:5460fc57b6e4	1521	/* Wait until TEACK flag is set */
mbed_official	381:5460fc57b6e4	1522	if(USART_WaitOnFlagUntilTimeout(husart, USART_ISR_TEACK, RESET, TEACK_REACK_TIMEOUT) != HAL_OK)
mbed_official	381:5460fc57b6e4	1523	{
mbed_official	381:5460fc57b6e4	1524	/* Timeout Occured */
mbed_official	381:5460fc57b6e4	1525	return HAL_TIMEOUT;
mbed_official	381:5460fc57b6e4	1526	}
mbed_official	381:5460fc57b6e4	1527	}
mbed_official	381:5460fc57b6e4	1528	/* Check if the Receiver is enabled */
mbed_official	381:5460fc57b6e4	1529	if((husart->Instance->CR1 & USART_CR1_RE) == USART_CR1_RE)
mbed_official	381:5460fc57b6e4	1530	{
mbed_official	381:5460fc57b6e4	1531	/* Wait until REACK flag is set */
mbed_official	381:5460fc57b6e4	1532	if(USART_WaitOnFlagUntilTimeout(husart, USART_ISR_REACK, RESET, TEACK_REACK_TIMEOUT) != HAL_OK)
mbed_official	381:5460fc57b6e4	1533	{
mbed_official	381:5460fc57b6e4	1534	/* Timeout Occured */
mbed_official	381:5460fc57b6e4	1535	return HAL_TIMEOUT;
mbed_official	381:5460fc57b6e4	1536	}
mbed_official	381:5460fc57b6e4	1537	}
mbed_official	381:5460fc57b6e4	1538
mbed_official	381:5460fc57b6e4	1539	/* Initialize the USART state*/
mbed_official	381:5460fc57b6e4	1540	husart->State= HAL_USART_STATE_READY;
mbed_official	381:5460fc57b6e4	1541
mbed_official	381:5460fc57b6e4	1542	/* Process Unlocked */
mbed_official	381:5460fc57b6e4	1543	__HAL_UNLOCK(husart);
mbed_official	381:5460fc57b6e4	1544
mbed_official	381:5460fc57b6e4	1545	return HAL_OK;
mbed_official	381:5460fc57b6e4	1546	}
mbed_official	381:5460fc57b6e4	1547
mbed_official	381:5460fc57b6e4	1548	/**
mbed_official	381:5460fc57b6e4	1549	* @brief Simplex Send an amount of data in non-blocking mode.
mbed_official	381:5460fc57b6e4	1550	* Function called under interruption only, once
mbed_official	381:5460fc57b6e4	1551	* interruptions have been enabled by HAL_USART_Transmit_IT()
mbed_official	381:5460fc57b6e4	1552	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	1553	* @retval HAL status
mbed_official	381:5460fc57b6e4	1554	* @note The USART errors are not managed to avoid the overrun error.
mbed_official	381:5460fc57b6e4	1555	*/
mbed_official	381:5460fc57b6e4	1556	static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	1557	{
mbed_official	381:5460fc57b6e4	1558	uint16_t* tmp;
mbed_official	381:5460fc57b6e4	1559
mbed_official	381:5460fc57b6e4	1560	if (husart->State == HAL_USART_STATE_BUSY_TX)
mbed_official	381:5460fc57b6e4	1561	{
mbed_official	381:5460fc57b6e4	1562
mbed_official	381:5460fc57b6e4	1563	if(husart->TxXferCount == 0)
mbed_official	381:5460fc57b6e4	1564	{
mbed_official	381:5460fc57b6e4	1565	/* Disable the USART Transmit Complete Interrupt */
mbed_official	381:5460fc57b6e4	1566	__HAL_USART_DISABLE_IT(husart, USART_IT_TXE);
mbed_official	381:5460fc57b6e4	1567
mbed_official	381:5460fc57b6e4	1568	/* Enable the USART Transmit Complete Interrupt */
mbed_official	381:5460fc57b6e4	1569	__HAL_USART_ENABLE_IT(husart, USART_IT_TC);
mbed_official	381:5460fc57b6e4	1570
mbed_official	381:5460fc57b6e4	1571	return HAL_OK;
mbed_official	381:5460fc57b6e4	1572	}
mbed_official	381:5460fc57b6e4	1573	else
mbed_official	381:5460fc57b6e4	1574	{
mbed_official	381:5460fc57b6e4	1575	if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
mbed_official	381:5460fc57b6e4	1576	{
mbed_official	381:5460fc57b6e4	1577	tmp = (uint16_t*) husart->pTxBuffPtr;
mbed_official	381:5460fc57b6e4	1578	husart->Instance->TDR = (*tmp & (uint16_t)0x01FF);
mbed_official	381:5460fc57b6e4	1579	husart->pTxBuffPtr += 2;
mbed_official	381:5460fc57b6e4	1580	}
mbed_official	381:5460fc57b6e4	1581	else
mbed_official	381:5460fc57b6e4	1582	{
mbed_official	381:5460fc57b6e4	1583	husart->Instance->TDR = (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0xFF);
mbed_official	381:5460fc57b6e4	1584	}
mbed_official	381:5460fc57b6e4	1585
mbed_official	381:5460fc57b6e4	1586	husart->TxXferCount--;
mbed_official	381:5460fc57b6e4	1587
mbed_official	381:5460fc57b6e4	1588	return HAL_OK;
mbed_official	381:5460fc57b6e4	1589	}
mbed_official	381:5460fc57b6e4	1590	}
mbed_official	381:5460fc57b6e4	1591	else
mbed_official	381:5460fc57b6e4	1592	{
mbed_official	381:5460fc57b6e4	1593	return HAL_BUSY;
mbed_official	381:5460fc57b6e4	1594	}
mbed_official	381:5460fc57b6e4	1595	}
mbed_official	381:5460fc57b6e4	1596
mbed_official	381:5460fc57b6e4	1597
mbed_official	381:5460fc57b6e4	1598	/**
mbed_official	381:5460fc57b6e4	1599	* @brief Wraps up transmission in non blocking mode.
mbed_official	381:5460fc57b6e4	1600	* @param husart: pointer to a USART_HandleTypeDef structure that contains
mbed_official	381:5460fc57b6e4	1601	* the configuration information for the specified USART module.
mbed_official	381:5460fc57b6e4	1602	* @retval HAL status
mbed_official	381:5460fc57b6e4	1603	*/
mbed_official	381:5460fc57b6e4	1604	static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	1605	{
mbed_official	381:5460fc57b6e4	1606	/* Disable the USART Transmit Complete Interrupt */
mbed_official	381:5460fc57b6e4	1607	__HAL_USART_DISABLE_IT(husart, USART_IT_TC);
mbed_official	381:5460fc57b6e4	1608
mbed_official	381:5460fc57b6e4	1609	/* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
mbed_official	381:5460fc57b6e4	1610	__HAL_USART_DISABLE_IT(husart, USART_IT_ERR);
mbed_official	381:5460fc57b6e4	1611
mbed_official	381:5460fc57b6e4	1612	husart->State = HAL_USART_STATE_READY;
mbed_official	381:5460fc57b6e4	1613
mbed_official	381:5460fc57b6e4	1614	HAL_USART_TxCpltCallback(husart);
mbed_official	381:5460fc57b6e4	1615
mbed_official	381:5460fc57b6e4	1616	return HAL_OK;
mbed_official	381:5460fc57b6e4	1617	}
mbed_official	381:5460fc57b6e4	1618
mbed_official	381:5460fc57b6e4	1619
mbed_official	381:5460fc57b6e4	1620	/**
mbed_official	381:5460fc57b6e4	1621	* @brief Simplex Receive an amount of data in non-blocking mode.
mbed_official	381:5460fc57b6e4	1622	* Function called under interruption only, once
mbed_official	381:5460fc57b6e4	1623	* interruptions have been enabled by HAL_USART_Receive_IT()
mbed_official	381:5460fc57b6e4	1624	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	1625	* @retval HAL status
mbed_official	381:5460fc57b6e4	1626	*/
mbed_official	381:5460fc57b6e4	1627	static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	1628	{
mbed_official	381:5460fc57b6e4	1629	uint16_t* tmp;
mbed_official	381:5460fc57b6e4	1630	uint16_t uhMask = husart->Mask;
mbed_official	381:5460fc57b6e4	1631
mbed_official	381:5460fc57b6e4	1632	if(husart->State == HAL_USART_STATE_BUSY_RX)
mbed_official	381:5460fc57b6e4	1633	{
mbed_official	381:5460fc57b6e4	1634
mbed_official	381:5460fc57b6e4	1635	if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
mbed_official	381:5460fc57b6e4	1636	{
mbed_official	381:5460fc57b6e4	1637	tmp = (uint16_t*) husart->pRxBuffPtr;
mbed_official	381:5460fc57b6e4	1638	*tmp = (uint16_t)(husart->Instance->RDR & uhMask);
mbed_official	381:5460fc57b6e4	1639	husart->pRxBuffPtr += 2;
mbed_official	381:5460fc57b6e4	1640	}
mbed_official	381:5460fc57b6e4	1641	else
mbed_official	381:5460fc57b6e4	1642	{
mbed_official	381:5460fc57b6e4	1643	*husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->RDR & (uint8_t)uhMask);
mbed_official	381:5460fc57b6e4	1644	}
mbed_official	381:5460fc57b6e4	1645	/* Send dummy byte in order to generate the clock for the Slave to Send the next data */
mbed_official	381:5460fc57b6e4	1646	husart->Instance->TDR = (DUMMY_DATA & (uint16_t)0x00FF);
mbed_official	381:5460fc57b6e4	1647
mbed_official	381:5460fc57b6e4	1648	if(--husart->RxXferCount == 0)
mbed_official	381:5460fc57b6e4	1649	{
mbed_official	381:5460fc57b6e4	1650	__HAL_USART_DISABLE_IT(husart, USART_IT_RXNE);
mbed_official	381:5460fc57b6e4	1651
mbed_official	381:5460fc57b6e4	1652	/* Disable the USART Parity Error Interrupt */
mbed_official	381:5460fc57b6e4	1653	__HAL_USART_DISABLE_IT(husart, USART_IT_PE);
mbed_official	381:5460fc57b6e4	1654
mbed_official	381:5460fc57b6e4	1655	/* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
mbed_official	381:5460fc57b6e4	1656	__HAL_USART_DISABLE_IT(husart, USART_IT_ERR);
mbed_official	381:5460fc57b6e4	1657
mbed_official	381:5460fc57b6e4	1658	husart->State = HAL_USART_STATE_READY;
mbed_official	381:5460fc57b6e4	1659
mbed_official	381:5460fc57b6e4	1660	HAL_USART_RxCpltCallback(husart);
mbed_official	381:5460fc57b6e4	1661
mbed_official	381:5460fc57b6e4	1662	return HAL_OK;
mbed_official	381:5460fc57b6e4	1663	}
mbed_official	381:5460fc57b6e4	1664
mbed_official	381:5460fc57b6e4	1665	return HAL_OK;
mbed_official	381:5460fc57b6e4	1666	}
mbed_official	381:5460fc57b6e4	1667	else
mbed_official	381:5460fc57b6e4	1668	{
mbed_official	381:5460fc57b6e4	1669	return HAL_BUSY;
mbed_official	381:5460fc57b6e4	1670	}
mbed_official	381:5460fc57b6e4	1671	}
mbed_official	381:5460fc57b6e4	1672
mbed_official	381:5460fc57b6e4	1673	/**
mbed_official	381:5460fc57b6e4	1674	* @brief Full-Duplex Send receive an amount of data in full-duplex mode (non-blocking).
mbed_official	381:5460fc57b6e4	1675	* Function called under interruption only, once
mbed_official	381:5460fc57b6e4	1676	* interruptions have been enabled by HAL_USART_TransmitReceive_IT()
mbed_official	381:5460fc57b6e4	1677	* @param husart: USART handle
mbed_official	381:5460fc57b6e4	1678	* @retval HAL status
mbed_official	381:5460fc57b6e4	1679	*/
mbed_official	381:5460fc57b6e4	1680	static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart)
mbed_official	381:5460fc57b6e4	1681	{
mbed_official	381:5460fc57b6e4	1682	uint16_t* tmp;
mbed_official	381:5460fc57b6e4	1683	uint16_t uhMask = husart->Mask;
mbed_official	381:5460fc57b6e4	1684
mbed_official	381:5460fc57b6e4	1685	if(husart->State == HAL_USART_STATE_BUSY_TX_RX)
mbed_official	381:5460fc57b6e4	1686	{
mbed_official	381:5460fc57b6e4	1687
mbed_official	381:5460fc57b6e4	1688	if(husart->TxXferCount != 0x00)
mbed_official	381:5460fc57b6e4	1689	{
mbed_official	381:5460fc57b6e4	1690	if(__HAL_USART_GET_FLAG(husart, USART_FLAG_TXE) != RESET)
mbed_official	381:5460fc57b6e4	1691	{
mbed_official	381:5460fc57b6e4	1692	if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
mbed_official	381:5460fc57b6e4	1693	{
mbed_official	381:5460fc57b6e4	1694	tmp = (uint16_t*) husart->pTxBuffPtr;
mbed_official	381:5460fc57b6e4	1695	husart->Instance->TDR = (uint16_t)(*tmp & uhMask);
mbed_official	381:5460fc57b6e4	1696	husart->pTxBuffPtr += 2;
mbed_official	381:5460fc57b6e4	1697	}
mbed_official	381:5460fc57b6e4	1698	else
mbed_official	381:5460fc57b6e4	1699	{
mbed_official	381:5460fc57b6e4	1700	husart->Instance->TDR = (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)uhMask);
mbed_official	381:5460fc57b6e4	1701	}
mbed_official	381:5460fc57b6e4	1702	husart->TxXferCount--;
mbed_official	381:5460fc57b6e4	1703
mbed_official	381:5460fc57b6e4	1704	/* Check the latest data transmitted */
mbed_official	381:5460fc57b6e4	1705	if(husart->TxXferCount == 0)
mbed_official	381:5460fc57b6e4	1706	{
mbed_official	381:5460fc57b6e4	1707	__HAL_USART_DISABLE_IT(husart, USART_IT_TXE);
mbed_official	381:5460fc57b6e4	1708	}
mbed_official	381:5460fc57b6e4	1709	}
mbed_official	381:5460fc57b6e4	1710	}
mbed_official	381:5460fc57b6e4	1711
mbed_official	381:5460fc57b6e4	1712	if(husart->RxXferCount != 0x00)
mbed_official	381:5460fc57b6e4	1713	{
mbed_official	381:5460fc57b6e4	1714	if(__HAL_USART_GET_FLAG(husart, USART_FLAG_RXNE) != RESET)
mbed_official	381:5460fc57b6e4	1715	{
mbed_official	381:5460fc57b6e4	1716	if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE))
mbed_official	381:5460fc57b6e4	1717	{
mbed_official	381:5460fc57b6e4	1718	tmp = (uint16_t*) husart->pRxBuffPtr;
mbed_official	381:5460fc57b6e4	1719	*tmp = (uint16_t)(husart->Instance->RDR & uhMask);
mbed_official	381:5460fc57b6e4	1720	husart->pRxBuffPtr += 2;
mbed_official	381:5460fc57b6e4	1721	}
mbed_official	381:5460fc57b6e4	1722	else
mbed_official	381:5460fc57b6e4	1723	{
mbed_official	381:5460fc57b6e4	1724	*husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->RDR & (uint8_t)uhMask);
mbed_official	381:5460fc57b6e4	1725	}
mbed_official	381:5460fc57b6e4	1726	husart->RxXferCount--;
mbed_official	381:5460fc57b6e4	1727	}
mbed_official	381:5460fc57b6e4	1728	}
mbed_official	381:5460fc57b6e4	1729
mbed_official	381:5460fc57b6e4	1730	/* Check the latest data received */
mbed_official	381:5460fc57b6e4	1731	if(husart->RxXferCount == 0)
mbed_official	381:5460fc57b6e4	1732	{
mbed_official	381:5460fc57b6e4	1733	__HAL_USART_DISABLE_IT(husart, USART_IT_RXNE);
mbed_official	381:5460fc57b6e4	1734
mbed_official	381:5460fc57b6e4	1735	/* Disable the USART Parity Error Interrupt */
mbed_official	381:5460fc57b6e4	1736	__HAL_USART_DISABLE_IT(husart, USART_IT_PE);
mbed_official	381:5460fc57b6e4	1737
mbed_official	381:5460fc57b6e4	1738	/* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
mbed_official	381:5460fc57b6e4	1739	__HAL_USART_DISABLE_IT(husart, USART_IT_ERR);
mbed_official	381:5460fc57b6e4	1740
mbed_official	381:5460fc57b6e4	1741	husart->State = HAL_USART_STATE_READY;
mbed_official	381:5460fc57b6e4	1742
mbed_official	381:5460fc57b6e4	1743	HAL_USART_TxRxCpltCallback(husart);
mbed_official	381:5460fc57b6e4	1744
mbed_official	381:5460fc57b6e4	1745	return HAL_OK;
mbed_official	381:5460fc57b6e4	1746	}
mbed_official	381:5460fc57b6e4	1747
mbed_official	381:5460fc57b6e4	1748	return HAL_OK;
mbed_official	381:5460fc57b6e4	1749	}
mbed_official	381:5460fc57b6e4	1750	else
mbed_official	381:5460fc57b6e4	1751	{
mbed_official	381:5460fc57b6e4	1752	return HAL_BUSY;
mbed_official	381:5460fc57b6e4	1753	}
mbed_official	381:5460fc57b6e4	1754	}
mbed_official	381:5460fc57b6e4	1755
mbed_official	381:5460fc57b6e4	1756	/**
mbed_official	381:5460fc57b6e4	1757	* @}
mbed_official	381:5460fc57b6e4	1758	*/
mbed_official	381:5460fc57b6e4	1759
mbed_official	381:5460fc57b6e4	1760	#endif /* HAL_USART_MODULE_ENABLED */
mbed_official	381:5460fc57b6e4	1761	/**
mbed_official	381:5460fc57b6e4	1762	* @}
mbed_official	381:5460fc57b6e4	1763	*/
mbed_official	381:5460fc57b6e4	1764
mbed_official	381:5460fc57b6e4	1765	/**
mbed_official	381:5460fc57b6e4	1766	* @}
mbed_official	381:5460fc57b6e4	1767	*/
mbed_official	381:5460fc57b6e4	1768
mbed_official	381:5460fc57b6e4	1769	/********************** (C) COPYRIGHT STMicroelectronics *END OF FILE**/

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Type:	Library
Created:	15 Nov 2014
Imports:	9
Forks:	0
Commits:	401
Dependents:	0
Dependencies:	0
Followers:	3

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Stuart Northfield

Tony Engeham

targets/cmsis/TARGET_STM/TARGET_DISCO_F334C8/stm32f3xx_hal_usart.c@381:5460fc57b6e4, 2014-11-03 (annotated)

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