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targets/cmsis/TARGET_STM/TARGET_STM32L4/stm32l4xx_hal_uart_ex.c@610:813dcc80987e, 2015-08-14 (annotated)

Committer:
mbed_official
Date:
Fri Aug 14 13:15:17 2015 +0100
Revision:
610:813dcc80987e
Synchronized with git revision 6d84db41c6833e0b9b024741eb0616a5f62d5599



Full URL: https://github.com/mbedmicro/mbed/commit/6d84db41c6833e0b9b024741eb0616a5f62d5599/



DISCO_F746NG - Improvements

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UserRevisionLine numberNew contents of line
mbed_official 610:813dcc80987e 1 /**
mbed_official 610:813dcc80987e 2 ******************************************************************************
mbed_official 610:813dcc80987e 3 * @file stm32l4xx_hal_uart_ex.c
mbed_official 610:813dcc80987e 4 * @author MCD Application Team
mbed_official 610:813dcc80987e 5 * @version V1.0.0
mbed_official 610:813dcc80987e 6 * @date 26-June-2015
mbed_official 610:813dcc80987e 7 * @brief Extended UART HAL module driver.
mbed_official 610:813dcc80987e 8 * This file provides firmware functions to manage the following extended
mbed_official 610:813dcc80987e 9 * functionalities of the Universal Asynchronous Receiver Transmitter Peripheral (UART).
mbed_official 610:813dcc80987e 10 * + Initialization and de-initialization functions
mbed_official 610:813dcc80987e 11 * + Peripheral Control functions
mbed_official 610:813dcc80987e 12 *
mbed_official 610:813dcc80987e 13 *
mbed_official 610:813dcc80987e 14 @verbatim
mbed_official 610:813dcc80987e 15 ==============================================================================
mbed_official 610:813dcc80987e 16 ##### UART peripheral extended features #####
mbed_official 610:813dcc80987e 17 ==============================================================================
mbed_official 610:813dcc80987e 18
mbed_official 610:813dcc80987e 19 (#) Declare a UART_HandleTypeDef handle structure.
mbed_official 610:813dcc80987e 20
mbed_official 610:813dcc80987e 21 (#) For the UART RS485 Driver Enable mode, initialize the UART registers
mbed_official 610:813dcc80987e 22 by calling the HAL_RS485Ex_Init() API.
mbed_official 610:813dcc80987e 23
mbed_official 610:813dcc80987e 24
mbed_official 610:813dcc80987e 25 @endverbatim
mbed_official 610:813dcc80987e 26 ******************************************************************************
mbed_official 610:813dcc80987e 27 * @attention
mbed_official 610:813dcc80987e 28 *
mbed_official 610:813dcc80987e 29 * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
mbed_official 610:813dcc80987e 30 *
mbed_official 610:813dcc80987e 31 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 610:813dcc80987e 32 * are permitted provided that the following conditions are met:
mbed_official 610:813dcc80987e 33 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 610:813dcc80987e 34 * this list of conditions and the following disclaimer.
mbed_official 610:813dcc80987e 35 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 610:813dcc80987e 36 * this list of conditions and the following disclaimer in the documentation
mbed_official 610:813dcc80987e 37 * and/or other materials provided with the distribution.
mbed_official 610:813dcc80987e 38 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 610:813dcc80987e 39 * may be used to endorse or promote products derived from this software
mbed_official 610:813dcc80987e 40 * without specific prior written permission.
mbed_official 610:813dcc80987e 41 *
mbed_official 610:813dcc80987e 42 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 610:813dcc80987e 43 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 610:813dcc80987e 44 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 610:813dcc80987e 45 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 610:813dcc80987e 46 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 610:813dcc80987e 47 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 610:813dcc80987e 48 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 610:813dcc80987e 49 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 610:813dcc80987e 50 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 610:813dcc80987e 51 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 610:813dcc80987e 52 *
mbed_official 610:813dcc80987e 53 ******************************************************************************
mbed_official 610:813dcc80987e 54 */
mbed_official 610:813dcc80987e 55
mbed_official 610:813dcc80987e 56 /* Includes ------------------------------------------------------------------*/
mbed_official 610:813dcc80987e 57 #include "stm32l4xx_hal.h"
mbed_official 610:813dcc80987e 58
mbed_official 610:813dcc80987e 59 /** @addtogroup STM32L4xx_HAL_Driver
mbed_official 610:813dcc80987e 60 * @{
mbed_official 610:813dcc80987e 61 */
mbed_official 610:813dcc80987e 62
mbed_official 610:813dcc80987e 63 /** @defgroup UARTEx UARTEx
mbed_official 610:813dcc80987e 64 * @brief UART Extended HAL module driver
mbed_official 610:813dcc80987e 65 * @{
mbed_official 610:813dcc80987e 66 */
mbed_official 610:813dcc80987e 67
mbed_official 610:813dcc80987e 68 #ifdef HAL_UART_MODULE_ENABLED
mbed_official 610:813dcc80987e 69
mbed_official 610:813dcc80987e 70 /* Private typedef -----------------------------------------------------------*/
mbed_official 610:813dcc80987e 71 /* Private define ------------------------------------------------------------*/
mbed_official 610:813dcc80987e 72 /* Private macros ------------------------------------------------------------*/
mbed_official 610:813dcc80987e 73 /* Private variables ---------------------------------------------------------*/
mbed_official 610:813dcc80987e 74 /* Private function prototypes -----------------------------------------------*/
mbed_official 610:813dcc80987e 75 /** @defgroup UARTEx_Private_Functions UARTEx Private Functions
mbed_official 610:813dcc80987e 76 * @{
mbed_official 610:813dcc80987e 77 */
mbed_official 610:813dcc80987e 78 static void UARTEx_Wakeup_AddressConfig(UART_HandleTypeDef *huart, UART_WakeUpTypeDef WakeUpSelection);
mbed_official 610:813dcc80987e 79 /**
mbed_official 610:813dcc80987e 80 * @}
mbed_official 610:813dcc80987e 81 */
mbed_official 610:813dcc80987e 82
mbed_official 610:813dcc80987e 83 /* Exported functions --------------------------------------------------------*/
mbed_official 610:813dcc80987e 84
mbed_official 610:813dcc80987e 85 /** @defgroup UARTEx_Exported_Functions UARTEx Exported Functions
mbed_official 610:813dcc80987e 86 * @{
mbed_official 610:813dcc80987e 87 */
mbed_official 610:813dcc80987e 88
mbed_official 610:813dcc80987e 89 /** @defgroup UARTEx_Exported_Functions_Group1 Initialization and de-initialization functions
mbed_official 610:813dcc80987e 90 * @brief Extended Initialization and Configuration Functions
mbed_official 610:813dcc80987e 91 *
mbed_official 610:813dcc80987e 92 @verbatim
mbed_official 610:813dcc80987e 93 ===============================================================================
mbed_official 610:813dcc80987e 94 ##### Initialization and Configuration functions #####
mbed_official 610:813dcc80987e 95 ===============================================================================
mbed_official 610:813dcc80987e 96 [..]
mbed_official 610:813dcc80987e 97 This subsection provides a set of functions allowing to initialize the USARTx or the UARTy
mbed_official 610:813dcc80987e 98 in asynchronous mode.
mbed_official 610:813dcc80987e 99 (+) For the asynchronous mode the parameters below can be configured:
mbed_official 610:813dcc80987e 100 (++) Baud Rate
mbed_official 610:813dcc80987e 101 (++) Word Length
mbed_official 610:813dcc80987e 102 (++) Stop Bit
mbed_official 610:813dcc80987e 103 (++) Parity: If the parity is enabled, then the MSB bit of the data written
mbed_official 610:813dcc80987e 104 in the data register is transmitted but is changed by the parity bit.
mbed_official 610:813dcc80987e 105 Depending on the frame length defined by the M1 and M0 bits (7-bit,
mbed_official 610:813dcc80987e 106 8-bit or 9-bit),
mbed_official 610:813dcc80987e 107 the possible UART frame formats are as listed in the following table:
mbed_official 610:813dcc80987e 108
mbed_official 610:813dcc80987e 109 (+++) Table 1. UART frame format.
mbed_official 610:813dcc80987e 110 (+++) +-----------------------------------------------------------------------+
mbed_official 610:813dcc80987e 111 (+++) | M1 bit | M0 bit | PCE bit | UART frame |
mbed_official 610:813dcc80987e 112 (+++) |---------|---------|-----------|---------------------------------------|
mbed_official 610:813dcc80987e 113 (+++) | 0 | 0 | 0 | | SB | 8 bit data | STB | |
mbed_official 610:813dcc80987e 114 (+++) |---------|---------|-----------|---------------------------------------|
mbed_official 610:813dcc80987e 115 (+++) | 0 | 0 | 1 | | SB | 7 bit data | PB | STB | |
mbed_official 610:813dcc80987e 116 (+++) |---------|---------|-----------|---------------------------------------|
mbed_official 610:813dcc80987e 117 (+++) | 0 | 1 | 0 | | SB | 9 bit data | STB | |
mbed_official 610:813dcc80987e 118 (+++) |---------|---------|-----------|---------------------------------------|
mbed_official 610:813dcc80987e 119 (+++) | 0 | 1 | 1 | | SB | 8 bit data | PB | STB | |
mbed_official 610:813dcc80987e 120 (+++) |---------|---------|-----------|---------------------------------------|
mbed_official 610:813dcc80987e 121 (+++) | 1 | 0 | 0 | | SB | 7 bit data | STB | |
mbed_official 610:813dcc80987e 122 (+++) |---------|---------|-----------|---------------------------------------|
mbed_official 610:813dcc80987e 123 (+++) | 1 | 0 | 1 | | SB | 6 bit data | PB | STB | |
mbed_official 610:813dcc80987e 124 (+++) +-----------------------------------------------------------------------+
mbed_official 610:813dcc80987e 125 (++) Hardware flow control
mbed_official 610:813dcc80987e 126 (++) Receiver/transmitter modes
mbed_official 610:813dcc80987e 127 (++) Over Sampling Method
mbed_official 610:813dcc80987e 128 (++) One-Bit Sampling Method
mbed_official 610:813dcc80987e 129 (+) For the asynchronous mode, the following advanced features can be configured as well:
mbed_official 610:813dcc80987e 130 (++) TX and/or RX pin level inversion
mbed_official 610:813dcc80987e 131 (++) data logical level inversion
mbed_official 610:813dcc80987e 132 (++) RX and TX pins swap
mbed_official 610:813dcc80987e 133 (++) RX overrun detection disabling
mbed_official 610:813dcc80987e 134 (++) DMA disabling on RX error
mbed_official 610:813dcc80987e 135 (++) MSB first on communication line
mbed_official 610:813dcc80987e 136 (++) auto Baud rate detection
mbed_official 610:813dcc80987e 137 [..]
mbed_official 610:813dcc80987e 138 The HAL_RS485Ex_Init() API follows the UART RS485 mode configuration
mbed_official 610:813dcc80987e 139 procedures (details for the procedures are available in reference manual).
mbed_official 610:813dcc80987e 140
mbed_official 610:813dcc80987e 141 @endverbatim
mbed_official 610:813dcc80987e 142 * @{
mbed_official 610:813dcc80987e 143 */
mbed_official 610:813dcc80987e 144
mbed_official 610:813dcc80987e 145 /**
mbed_official 610:813dcc80987e 146 * @brief Initialize the RS485 Driver enable feature according to the specified
mbed_official 610:813dcc80987e 147 * parameters in the UART_InitTypeDef and creates the associated handle.
mbed_official 610:813dcc80987e 148 * @param huart: UART handle.
mbed_official 610:813dcc80987e 149 * @param Polarity: select the driver enable polarity.
mbed_official 610:813dcc80987e 150 * This parameter can be one of the following values:
mbed_official 610:813dcc80987e 151 * @arg UART_DE_POLARITY_HIGH: DE signal is active high
mbed_official 610:813dcc80987e 152 * @arg UART_DE_POLARITY_LOW: DE signal is active low
mbed_official 610:813dcc80987e 153 * @param AssertionTime: Driver Enable assertion time:
mbed_official 610:813dcc80987e 154 * 5-bit value defining the time between the activation of the DE (Driver Enable)
mbed_official 610:813dcc80987e 155 * signal and the beginning of the start bit. It is expressed in sample time
mbed_official 610:813dcc80987e 156 * units (1/8 or 1/16 bit time, depending on the oversampling rate)
mbed_official 610:813dcc80987e 157 * @param DeassertionTime: Driver Enable deassertion time:
mbed_official 610:813dcc80987e 158 * 5-bit value defining the time between the end of the last stop bit, in a
mbed_official 610:813dcc80987e 159 * transmitted message, and the de-activation of the DE (Driver Enable) signal.
mbed_official 610:813dcc80987e 160 * It is expressed in sample time units (1/8 or 1/16 bit time, depending on the
mbed_official 610:813dcc80987e 161 * oversampling rate).
mbed_official 610:813dcc80987e 162 * @retval HAL status
mbed_official 610:813dcc80987e 163 */
mbed_official 610:813dcc80987e 164 HAL_StatusTypeDef HAL_RS485Ex_Init(UART_HandleTypeDef *huart, uint32_t Polarity, uint32_t AssertionTime, uint32_t DeassertionTime)
mbed_official 610:813dcc80987e 165 {
mbed_official 610:813dcc80987e 166 uint32_t temp = 0x0;
mbed_official 610:813dcc80987e 167
mbed_official 610:813dcc80987e 168 /* Check the UART handle allocation */
mbed_official 610:813dcc80987e 169 if(huart == NULL)
mbed_official 610:813dcc80987e 170 {
mbed_official 610:813dcc80987e 171 return HAL_ERROR;
mbed_official 610:813dcc80987e 172 }
mbed_official 610:813dcc80987e 173 /* Check the Driver Enable UART instance */
mbed_official 610:813dcc80987e 174 assert_param(IS_UART_DRIVER_ENABLE_INSTANCE(huart->Instance));
mbed_official 610:813dcc80987e 175
mbed_official 610:813dcc80987e 176 /* Check the Driver Enable polarity */
mbed_official 610:813dcc80987e 177 assert_param(IS_UART_DE_POLARITY(Polarity));
mbed_official 610:813dcc80987e 178
mbed_official 610:813dcc80987e 179 /* Check the Driver Enable assertion time */
mbed_official 610:813dcc80987e 180 assert_param(IS_UART_ASSERTIONTIME(AssertionTime));
mbed_official 610:813dcc80987e 181
mbed_official 610:813dcc80987e 182 /* Check the Driver Enable deassertion time */
mbed_official 610:813dcc80987e 183 assert_param(IS_UART_DEASSERTIONTIME(DeassertionTime));
mbed_official 610:813dcc80987e 184
mbed_official 610:813dcc80987e 185 if(huart->State == HAL_UART_STATE_RESET)
mbed_official 610:813dcc80987e 186 {
mbed_official 610:813dcc80987e 187 /* Allocate lock resource and initialize it */
mbed_official 610:813dcc80987e 188 huart->Lock = HAL_UNLOCKED;
mbed_official 610:813dcc80987e 189
mbed_official 610:813dcc80987e 190 /* Init the low level hardware : GPIO, CLOCK, CORTEX */
mbed_official 610:813dcc80987e 191 HAL_UART_MspInit(huart);
mbed_official 610:813dcc80987e 192 }
mbed_official 610:813dcc80987e 193
mbed_official 610:813dcc80987e 194 huart->State = HAL_UART_STATE_BUSY;
mbed_official 610:813dcc80987e 195
mbed_official 610:813dcc80987e 196 /* Disable the Peripheral */
mbed_official 610:813dcc80987e 197 __HAL_UART_DISABLE(huart);
mbed_official 610:813dcc80987e 198
mbed_official 610:813dcc80987e 199 /* Set the UART Communication parameters */
mbed_official 610:813dcc80987e 200 if (UART_SetConfig(huart) == HAL_ERROR)
mbed_official 610:813dcc80987e 201 {
mbed_official 610:813dcc80987e 202 return HAL_ERROR;
mbed_official 610:813dcc80987e 203 }
mbed_official 610:813dcc80987e 204
mbed_official 610:813dcc80987e 205 if(huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
mbed_official 610:813dcc80987e 206 {
mbed_official 610:813dcc80987e 207 UART_AdvFeatureConfig(huart);
mbed_official 610:813dcc80987e 208 }
mbed_official 610:813dcc80987e 209
mbed_official 610:813dcc80987e 210 /* Enable the Driver Enable mode by setting the DEM bit in the CR3 register */
mbed_official 610:813dcc80987e 211 SET_BIT(huart->Instance->CR3, USART_CR3_DEM);
mbed_official 610:813dcc80987e 212
mbed_official 610:813dcc80987e 213 /* Set the Driver Enable polarity */
mbed_official 610:813dcc80987e 214 MODIFY_REG(huart->Instance->CR3, USART_CR3_DEP, Polarity);
mbed_official 610:813dcc80987e 215
mbed_official 610:813dcc80987e 216 /* Set the Driver Enable assertion and deassertion times */
mbed_official 610:813dcc80987e 217 temp = (AssertionTime << UART_CR1_DEAT_ADDRESS_LSB_POS);
mbed_official 610:813dcc80987e 218 temp |= (DeassertionTime << UART_CR1_DEDT_ADDRESS_LSB_POS);
mbed_official 610:813dcc80987e 219 MODIFY_REG(huart->Instance->CR1, (USART_CR1_DEDT|USART_CR1_DEAT), temp);
mbed_official 610:813dcc80987e 220
mbed_official 610:813dcc80987e 221 /* Enable the Peripheral */
mbed_official 610:813dcc80987e 222 __HAL_UART_ENABLE(huart);
mbed_official 610:813dcc80987e 223
mbed_official 610:813dcc80987e 224 /* TEACK and/or REACK to check before moving huart->State to Ready */
mbed_official 610:813dcc80987e 225 return (UART_CheckIdleState(huart));
mbed_official 610:813dcc80987e 226 }
mbed_official 610:813dcc80987e 227
mbed_official 610:813dcc80987e 228
mbed_official 610:813dcc80987e 229 /**
mbed_official 610:813dcc80987e 230 * @}
mbed_official 610:813dcc80987e 231 */
mbed_official 610:813dcc80987e 232
mbed_official 610:813dcc80987e 233 /** @defgroup UARTEx_Exported_Functions_Group3 Peripheral Control functions
mbed_official 610:813dcc80987e 234 * @brief Extended Peripheral Control functions
mbed_official 610:813dcc80987e 235 *
mbed_official 610:813dcc80987e 236 @verbatim
mbed_official 610:813dcc80987e 237 ===============================================================================
mbed_official 610:813dcc80987e 238 ##### Peripheral Control functions #####
mbed_official 610:813dcc80987e 239 ===============================================================================
mbed_official 610:813dcc80987e 240 [..] This section provides the following functions:
mbed_official 610:813dcc80987e 241 (+) HAL_UARTEx_EnableClockStopMode() API enables the UART clock (HSI or LSE only) during stop mode
mbed_official 610:813dcc80987e 242 (+) HAL_UARTEx_DisableClockStopMode() API disables the above functionality
mbed_official 610:813dcc80987e 243 (+) HAL_MultiProcessorEx_AddressLength_Set() API optionally sets the UART node address
mbed_official 610:813dcc80987e 244 detection length to more than 4 bits for multiprocessor address mark wake up.
mbed_official 610:813dcc80987e 245 (+) HAL_UARTEx_StopModeWakeUpSourceConfig() API defines the wake-up from stop mode
mbed_official 610:813dcc80987e 246 trigger: address match, Start Bit detection or RXNE bit status.
mbed_official 610:813dcc80987e 247 (+) HAL_UARTEx_EnableStopMode() API enables the UART to wake up the MCU from stop mode
mbed_official 610:813dcc80987e 248 (+) HAL_UARTEx_DisableStopMode() API disables the above functionality
mbed_official 610:813dcc80987e 249 (+) HAL_UARTEx_WakeupCallback() called upon UART wakeup interrupt
mbed_official 610:813dcc80987e 250
mbed_official 610:813dcc80987e 251
mbed_official 610:813dcc80987e 252 @endverbatim
mbed_official 610:813dcc80987e 253 * @{
mbed_official 610:813dcc80987e 254 */
mbed_official 610:813dcc80987e 255
mbed_official 610:813dcc80987e 256
mbed_official 610:813dcc80987e 257
mbed_official 610:813dcc80987e 258
mbed_official 610:813dcc80987e 259 /**
mbed_official 610:813dcc80987e 260 * @brief By default in multiprocessor mode, when the wake up method is set
mbed_official 610:813dcc80987e 261 * to address mark, the UART handles only 4-bit long addresses detection;
mbed_official 610:813dcc80987e 262 * this API allows to enable longer addresses detection (6-, 7- or 8-bit
mbed_official 610:813dcc80987e 263 * long).
mbed_official 610:813dcc80987e 264 * @note Addresses detection lengths are: 6-bit address detection in 7-bit data mode,
mbed_official 610:813dcc80987e 265 * 7-bit address detection in 8-bit data mode, 8-bit address detection in 9-bit data mode.
mbed_official 610:813dcc80987e 266 * @param huart: UART handle.
mbed_official 610:813dcc80987e 267 * @param AddressLength: this parameter can be one of the following values:
mbed_official 610:813dcc80987e 268 * @arg UART_ADDRESS_DETECT_4B: 4-bit long address
mbed_official 610:813dcc80987e 269 * @arg UART_ADDRESS_DETECT_7B: 6-, 7- or 8-bit long address
mbed_official 610:813dcc80987e 270 * @retval HAL status
mbed_official 610:813dcc80987e 271 */
mbed_official 610:813dcc80987e 272 HAL_StatusTypeDef HAL_MultiProcessorEx_AddressLength_Set(UART_HandleTypeDef *huart, uint32_t AddressLength)
mbed_official 610:813dcc80987e 273 {
mbed_official 610:813dcc80987e 274 /* Check the UART handle allocation */
mbed_official 610:813dcc80987e 275 if(huart == NULL)
mbed_official 610:813dcc80987e 276 {
mbed_official 610:813dcc80987e 277 return HAL_ERROR;
mbed_official 610:813dcc80987e 278 }
mbed_official 610:813dcc80987e 279
mbed_official 610:813dcc80987e 280 /* Check the address length parameter */
mbed_official 610:813dcc80987e 281 assert_param(IS_UART_ADDRESSLENGTH_DETECT(AddressLength));
mbed_official 610:813dcc80987e 282
mbed_official 610:813dcc80987e 283 huart->State = HAL_UART_STATE_BUSY;
mbed_official 610:813dcc80987e 284
mbed_official 610:813dcc80987e 285 /* Disable the Peripheral */
mbed_official 610:813dcc80987e 286 __HAL_UART_DISABLE(huart);
mbed_official 610:813dcc80987e 287
mbed_official 610:813dcc80987e 288 /* Set the address length */
mbed_official 610:813dcc80987e 289 MODIFY_REG(huart->Instance->CR2, USART_CR2_ADDM7, AddressLength);
mbed_official 610:813dcc80987e 290
mbed_official 610:813dcc80987e 291 /* Enable the Peripheral */
mbed_official 610:813dcc80987e 292 __HAL_UART_ENABLE(huart);
mbed_official 610:813dcc80987e 293
mbed_official 610:813dcc80987e 294 /* TEACK and/or REACK to check before moving huart->State to Ready */
mbed_official 610:813dcc80987e 295 return (UART_CheckIdleState(huart));
mbed_official 610:813dcc80987e 296 }
mbed_official 610:813dcc80987e 297
mbed_official 610:813dcc80987e 298
mbed_official 610:813dcc80987e 299 /**
mbed_official 610:813dcc80987e 300 * @brief Set Wakeup from Stop mode interrupt flag selection.
mbed_official 610:813dcc80987e 301 * @param huart: UART handle.
mbed_official 610:813dcc80987e 302 * @param WakeUpSelection: address match, Start Bit detection or RXNE bit status.
mbed_official 610:813dcc80987e 303 * This parameter can be one of the following values:
mbed_official 610:813dcc80987e 304 * @arg UART_WAKEUP_ON_ADDRESS
mbed_official 610:813dcc80987e 305 * @arg UART_WAKEUP_ON_STARTBIT
mbed_official 610:813dcc80987e 306 * @arg UART_WAKEUP_ON_READDATA_NONEMPTY
mbed_official 610:813dcc80987e 307 * @retval HAL status
mbed_official 610:813dcc80987e 308 */
mbed_official 610:813dcc80987e 309 HAL_StatusTypeDef HAL_UARTEx_StopModeWakeUpSourceConfig(UART_HandleTypeDef *huart, UART_WakeUpTypeDef WakeUpSelection)
mbed_official 610:813dcc80987e 310 {
mbed_official 610:813dcc80987e 311 HAL_StatusTypeDef status = HAL_OK;
mbed_official 610:813dcc80987e 312
mbed_official 610:813dcc80987e 313 /* check the wake-up from stop mode UART instance */
mbed_official 610:813dcc80987e 314 assert_param(IS_UART_WAKEUP_FROMSTOP_INSTANCE(huart->Instance));
mbed_official 610:813dcc80987e 315 /* check the wake-up selection parameter */
mbed_official 610:813dcc80987e 316 assert_param(IS_UART_WAKEUP_SELECTION(WakeUpSelection.WakeUpEvent));
mbed_official 610:813dcc80987e 317
mbed_official 610:813dcc80987e 318 /* Process Locked */
mbed_official 610:813dcc80987e 319 __HAL_LOCK(huart);
mbed_official 610:813dcc80987e 320
mbed_official 610:813dcc80987e 321 huart->State = HAL_UART_STATE_BUSY;
mbed_official 610:813dcc80987e 322
mbed_official 610:813dcc80987e 323 /* Disable the Peripheral */
mbed_official 610:813dcc80987e 324 __HAL_UART_DISABLE(huart);
mbed_official 610:813dcc80987e 325
mbed_official 610:813dcc80987e 326 /* Set the wake-up selection scheme */
mbed_official 610:813dcc80987e 327 MODIFY_REG(huart->Instance->CR3, USART_CR3_WUS, WakeUpSelection.WakeUpEvent);
mbed_official 610:813dcc80987e 328
mbed_official 610:813dcc80987e 329 if (WakeUpSelection.WakeUpEvent == UART_WAKEUP_ON_ADDRESS)
mbed_official 610:813dcc80987e 330 {
mbed_official 610:813dcc80987e 331 UARTEx_Wakeup_AddressConfig(huart, WakeUpSelection);
mbed_official 610:813dcc80987e 332 }
mbed_official 610:813dcc80987e 333
mbed_official 610:813dcc80987e 334 /* Enable the Peripheral */
mbed_official 610:813dcc80987e 335 __HAL_UART_ENABLE(huart);
mbed_official 610:813dcc80987e 336
mbed_official 610:813dcc80987e 337 /* Wait until REACK flag is set */
mbed_official 610:813dcc80987e 338 if(UART_WaitOnFlagUntilTimeout(huart, USART_ISR_REACK, RESET, HAL_UART_TIMEOUT_VALUE) != HAL_OK)
mbed_official 610:813dcc80987e 339 {
mbed_official 610:813dcc80987e 340 status = HAL_TIMEOUT;
mbed_official 610:813dcc80987e 341 }
mbed_official 610:813dcc80987e 342 else
mbed_official 610:813dcc80987e 343 {
mbed_official 610:813dcc80987e 344 /* Initialize the UART State */
mbed_official 610:813dcc80987e 345 huart->State = HAL_UART_STATE_READY;
mbed_official 610:813dcc80987e 346 }
mbed_official 610:813dcc80987e 347
mbed_official 610:813dcc80987e 348 /* Process Unlocked */
mbed_official 610:813dcc80987e 349 __HAL_UNLOCK(huart);
mbed_official 610:813dcc80987e 350
mbed_official 610:813dcc80987e 351 return status;
mbed_official 610:813dcc80987e 352 }
mbed_official 610:813dcc80987e 353
mbed_official 610:813dcc80987e 354
mbed_official 610:813dcc80987e 355 /**
mbed_official 610:813dcc80987e 356 * @brief Enable UART Stop Mode.
mbed_official 610:813dcc80987e 357 * @note The UART is able to wake up the MCU from Stop 1 mode as long as UART clock is HSI or LSE.
mbed_official 610:813dcc80987e 358 * @param huart: UART handle.
mbed_official 610:813dcc80987e 359 * @retval HAL status
mbed_official 610:813dcc80987e 360 */
mbed_official 610:813dcc80987e 361 HAL_StatusTypeDef HAL_UARTEx_EnableStopMode(UART_HandleTypeDef *huart)
mbed_official 610:813dcc80987e 362 {
mbed_official 610:813dcc80987e 363 /* Process Locked */
mbed_official 610:813dcc80987e 364 __HAL_LOCK(huart);
mbed_official 610:813dcc80987e 365
mbed_official 610:813dcc80987e 366 huart->State = HAL_UART_STATE_BUSY;
mbed_official 610:813dcc80987e 367
mbed_official 610:813dcc80987e 368 /* Set UESM bit */
mbed_official 610:813dcc80987e 369 SET_BIT(huart->Instance->CR1, USART_CR1_UESM);
mbed_official 610:813dcc80987e 370
mbed_official 610:813dcc80987e 371 huart->State = HAL_UART_STATE_READY;
mbed_official 610:813dcc80987e 372
mbed_official 610:813dcc80987e 373 /* Process Unlocked */
mbed_official 610:813dcc80987e 374 __HAL_UNLOCK(huart);
mbed_official 610:813dcc80987e 375
mbed_official 610:813dcc80987e 376 return HAL_OK;
mbed_official 610:813dcc80987e 377 }
mbed_official 610:813dcc80987e 378
mbed_official 610:813dcc80987e 379 /**
mbed_official 610:813dcc80987e 380 * @brief Disable UART Stop Mode.
mbed_official 610:813dcc80987e 381 * @param huart: UART handle.
mbed_official 610:813dcc80987e 382 * @retval HAL status
mbed_official 610:813dcc80987e 383 */
mbed_official 610:813dcc80987e 384 HAL_StatusTypeDef HAL_UARTEx_DisableStopMode(UART_HandleTypeDef *huart)
mbed_official 610:813dcc80987e 385 {
mbed_official 610:813dcc80987e 386 /* Process Locked */
mbed_official 610:813dcc80987e 387 __HAL_LOCK(huart);
mbed_official 610:813dcc80987e 388
mbed_official 610:813dcc80987e 389 huart->State = HAL_UART_STATE_BUSY;
mbed_official 610:813dcc80987e 390
mbed_official 610:813dcc80987e 391 /* Clear UESM bit */
mbed_official 610:813dcc80987e 392 CLEAR_BIT(huart->Instance->CR1, USART_CR1_UESM);
mbed_official 610:813dcc80987e 393
mbed_official 610:813dcc80987e 394 huart->State = HAL_UART_STATE_READY;
mbed_official 610:813dcc80987e 395
mbed_official 610:813dcc80987e 396 /* Process Unlocked */
mbed_official 610:813dcc80987e 397 __HAL_UNLOCK(huart);
mbed_official 610:813dcc80987e 398
mbed_official 610:813dcc80987e 399 return HAL_OK;
mbed_official 610:813dcc80987e 400 }
mbed_official 610:813dcc80987e 401
mbed_official 610:813dcc80987e 402 /**
mbed_official 610:813dcc80987e 403 * @brief UART wakeup from Stop mode callback.
mbed_official 610:813dcc80987e 404 * @param huart: UART handle.
mbed_official 610:813dcc80987e 405 * @retval None
mbed_official 610:813dcc80987e 406 */
mbed_official 610:813dcc80987e 407 __weak void HAL_UARTEx_WakeupCallback(UART_HandleTypeDef *huart)
mbed_official 610:813dcc80987e 408 {
mbed_official 610:813dcc80987e 409 /* NOTE : This function should not be modified, when the callback is needed,
mbed_official 610:813dcc80987e 410 the HAL_UARTEx_WakeupCallback can be implemented in the user file.
mbed_official 610:813dcc80987e 411 */
mbed_official 610:813dcc80987e 412 }
mbed_official 610:813dcc80987e 413
mbed_official 610:813dcc80987e 414 /**
mbed_official 610:813dcc80987e 415 * @}
mbed_official 610:813dcc80987e 416 */
mbed_official 610:813dcc80987e 417
mbed_official 610:813dcc80987e 418 /**
mbed_official 610:813dcc80987e 419 * @}
mbed_official 610:813dcc80987e 420 */
mbed_official 610:813dcc80987e 421
mbed_official 610:813dcc80987e 422 /** @addtogroup UARTEx_Private_Functions
mbed_official 610:813dcc80987e 423 * @{
mbed_official 610:813dcc80987e 424 */
mbed_official 610:813dcc80987e 425
mbed_official 610:813dcc80987e 426 /**
mbed_official 610:813dcc80987e 427 * @brief Initialize the UART wake-up from stop mode parameters when triggered by address detection.
mbed_official 610:813dcc80987e 428 * @param huart: UART handle.
mbed_official 610:813dcc80987e 429 * @param WakeUpSelection: UART wake up from stop mode parameters.
mbed_official 610:813dcc80987e 430 * @retval None
mbed_official 610:813dcc80987e 431 */
mbed_official 610:813dcc80987e 432 static void UARTEx_Wakeup_AddressConfig(UART_HandleTypeDef *huart, UART_WakeUpTypeDef WakeUpSelection)
mbed_official 610:813dcc80987e 433 {
mbed_official 610:813dcc80987e 434 assert_param(IS_UART_ADDRESSLENGTH_DETECT(WakeUpSelection.AddressLength));
mbed_official 610:813dcc80987e 435
mbed_official 610:813dcc80987e 436 /* Set the USART address length */
mbed_official 610:813dcc80987e 437 MODIFY_REG(huart->Instance->CR2, USART_CR2_ADDM7, WakeUpSelection.AddressLength);
mbed_official 610:813dcc80987e 438
mbed_official 610:813dcc80987e 439 /* Set the USART address node */
mbed_official 610:813dcc80987e 440 MODIFY_REG(huart->Instance->CR2, USART_CR2_ADD, ((uint32_t)WakeUpSelection.Address << UART_CR2_ADDRESS_LSB_POS));
mbed_official 610:813dcc80987e 441 }
mbed_official 610:813dcc80987e 442
mbed_official 610:813dcc80987e 443 /**
mbed_official 610:813dcc80987e 444 * @}
mbed_official 610:813dcc80987e 445 */
mbed_official 610:813dcc80987e 446
mbed_official 610:813dcc80987e 447 #endif /* HAL_UART_MODULE_ENABLED */
mbed_official 610:813dcc80987e 448
mbed_official 610:813dcc80987e 449 /**
mbed_official 610:813dcc80987e 450 * @}
mbed_official 610:813dcc80987e 451 */
mbed_official 610:813dcc80987e 452
mbed_official 610:813dcc80987e 453 /**
mbed_official 610:813dcc80987e 454 * @}
mbed_official 610:813dcc80987e 455 */
mbed_official 610:813dcc80987e 456
mbed_official 610:813dcc80987e 457 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/