Peter Drescher
mbed library with additional peripherals for ST F401 board
Fork of
mbed-src
by 
mbed official
This mbed LIB has additional peripherals for ST F401 board
- UART2 : PA_3 rx, PA_2 tx
- UART3 : PC_7 rx, PC_6 tx
- I2C2 : PB_3 SDA, PB_10 SCL
- I2C3 : PB_4 SDA, PA_8 SCL
targets/cmsis/TARGET_STM/TARGET_NUCLEO_F103RB/stm32f10x_usart.c@70:c1fbde68b492, 2014-01-07 (annotated)
- Committer:
- mbed_official
- Date:
- Tue Jan 07 11:00:05 2014 +0000
- Revision:
- 70:c1fbde68b492
- Parent:
- 52:a51c77007319
- Child:
- 84:f54042cbc282
Synchronized with git revision 3f438a307904431f2782db3c8fa49946b9fc1d85
Full URL: https://github.com/mbedmicro/mbed/commit/3f438a307904431f2782db3c8fa49946b9fc1d85/
[NUCLEO_F103RB] license text changed + sleep hal updated
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| mbed_official | 52:a51c77007319 | 1 | /** |
| mbed_official | 52:a51c77007319 | 2 | ****************************************************************************** |
| mbed_official | 52:a51c77007319 | 3 | * @file stm32f10x_usart.c |
| mbed_official | 52:a51c77007319 | 4 | * @author MCD Application Team |
| mbed_official | 52:a51c77007319 | 5 | * @version V3.5.0 |
| mbed_official | 52:a51c77007319 | 6 | * @date 11-March-2011 |
| mbed_official | 52:a51c77007319 | 7 | * @brief This file provides all the USART firmware functions. |
| mbed_official | 70:c1fbde68b492 | 8 | ******************************************************************************* |
| mbed_official | 70:c1fbde68b492 | 9 | * Copyright (c) 2014, STMicroelectronics |
| mbed_official | 70:c1fbde68b492 | 10 | * All rights reserved. |
| mbed_official | 70:c1fbde68b492 | 11 | * |
| mbed_official | 70:c1fbde68b492 | 12 | * Redistribution and use in source and binary forms, with or without |
| mbed_official | 70:c1fbde68b492 | 13 | * modification, are permitted provided that the following conditions are met: |
| mbed_official | 70:c1fbde68b492 | 14 | * |
| mbed_official | 70:c1fbde68b492 | 15 | * 1. Redistributions of source code must retain the above copyright notice, |
| mbed_official | 70:c1fbde68b492 | 16 | * this list of conditions and the following disclaimer. |
| mbed_official | 70:c1fbde68b492 | 17 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| mbed_official | 70:c1fbde68b492 | 18 | * this list of conditions and the following disclaimer in the documentation |
| mbed_official | 70:c1fbde68b492 | 19 | * and/or other materials provided with the distribution. |
| mbed_official | 70:c1fbde68b492 | 20 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
| mbed_official | 70:c1fbde68b492 | 21 | * may be used to endorse or promote products derived from this software |
| mbed_official | 70:c1fbde68b492 | 22 | * without specific prior written permission. |
| mbed_official | 70:c1fbde68b492 | 23 | * |
| mbed_official | 70:c1fbde68b492 | 24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| mbed_official | 70:c1fbde68b492 | 25 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| mbed_official | 70:c1fbde68b492 | 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| mbed_official | 70:c1fbde68b492 | 27 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| mbed_official | 70:c1fbde68b492 | 28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| mbed_official | 70:c1fbde68b492 | 29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| mbed_official | 70:c1fbde68b492 | 30 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| mbed_official | 70:c1fbde68b492 | 31 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| mbed_official | 70:c1fbde68b492 | 32 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| mbed_official | 70:c1fbde68b492 | 33 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| mbed_official | 70:c1fbde68b492 | 34 | ******************************************************************************* |
| mbed_official | 70:c1fbde68b492 | 35 | */ |
| mbed_official | 52:a51c77007319 | 36 | |
| mbed_official | 52:a51c77007319 | 37 | /* Includes ------------------------------------------------------------------*/ |
| mbed_official | 52:a51c77007319 | 38 | #include "stm32f10x_usart.h" |
| mbed_official | 52:a51c77007319 | 39 | #include "stm32f10x_rcc.h" |
| mbed_official | 52:a51c77007319 | 40 | |
| mbed_official | 52:a51c77007319 | 41 | /** @addtogroup STM32F10x_StdPeriph_Driver |
| mbed_official | 52:a51c77007319 | 42 | * @{ |
| mbed_official | 52:a51c77007319 | 43 | */ |
| mbed_official | 52:a51c77007319 | 44 | |
| mbed_official | 52:a51c77007319 | 45 | /** @defgroup USART |
| mbed_official | 52:a51c77007319 | 46 | * @brief USART driver modules |
| mbed_official | 52:a51c77007319 | 47 | * @{ |
| mbed_official | 52:a51c77007319 | 48 | */ |
| mbed_official | 52:a51c77007319 | 49 | |
| mbed_official | 52:a51c77007319 | 50 | /** @defgroup USART_Private_TypesDefinitions |
| mbed_official | 52:a51c77007319 | 51 | * @{ |
| mbed_official | 52:a51c77007319 | 52 | */ |
| mbed_official | 52:a51c77007319 | 53 | |
| mbed_official | 52:a51c77007319 | 54 | /** |
| mbed_official | 52:a51c77007319 | 55 | * @} |
| mbed_official | 52:a51c77007319 | 56 | */ |
| mbed_official | 52:a51c77007319 | 57 | |
| mbed_official | 52:a51c77007319 | 58 | /** @defgroup USART_Private_Defines |
| mbed_official | 52:a51c77007319 | 59 | * @{ |
| mbed_official | 52:a51c77007319 | 60 | */ |
| mbed_official | 52:a51c77007319 | 61 | |
| mbed_official | 52:a51c77007319 | 62 | #define CR1_UE_Set ((uint16_t)0x2000) /*!< USART Enable Mask */ |
| mbed_official | 52:a51c77007319 | 63 | #define CR1_UE_Reset ((uint16_t)0xDFFF) /*!< USART Disable Mask */ |
| mbed_official | 52:a51c77007319 | 64 | |
| mbed_official | 52:a51c77007319 | 65 | #define CR1_WAKE_Mask ((uint16_t)0xF7FF) /*!< USART WakeUp Method Mask */ |
| mbed_official | 52:a51c77007319 | 66 | |
| mbed_official | 52:a51c77007319 | 67 | #define CR1_RWU_Set ((uint16_t)0x0002) /*!< USART mute mode Enable Mask */ |
| mbed_official | 52:a51c77007319 | 68 | #define CR1_RWU_Reset ((uint16_t)0xFFFD) /*!< USART mute mode Enable Mask */ |
| mbed_official | 52:a51c77007319 | 69 | #define CR1_SBK_Set ((uint16_t)0x0001) /*!< USART Break Character send Mask */ |
| mbed_official | 52:a51c77007319 | 70 | #define CR1_CLEAR_Mask ((uint16_t)0xE9F3) /*!< USART CR1 Mask */ |
| mbed_official | 52:a51c77007319 | 71 | #define CR2_Address_Mask ((uint16_t)0xFFF0) /*!< USART address Mask */ |
| mbed_official | 52:a51c77007319 | 72 | |
| mbed_official | 52:a51c77007319 | 73 | #define CR2_LINEN_Set ((uint16_t)0x4000) /*!< USART LIN Enable Mask */ |
| mbed_official | 52:a51c77007319 | 74 | #define CR2_LINEN_Reset ((uint16_t)0xBFFF) /*!< USART LIN Disable Mask */ |
| mbed_official | 52:a51c77007319 | 75 | |
| mbed_official | 52:a51c77007319 | 76 | #define CR2_LBDL_Mask ((uint16_t)0xFFDF) /*!< USART LIN Break detection Mask */ |
| mbed_official | 52:a51c77007319 | 77 | #define CR2_STOP_CLEAR_Mask ((uint16_t)0xCFFF) /*!< USART CR2 STOP Bits Mask */ |
| mbed_official | 52:a51c77007319 | 78 | #define CR2_CLOCK_CLEAR_Mask ((uint16_t)0xF0FF) /*!< USART CR2 Clock Mask */ |
| mbed_official | 52:a51c77007319 | 79 | |
| mbed_official | 52:a51c77007319 | 80 | #define CR3_SCEN_Set ((uint16_t)0x0020) /*!< USART SC Enable Mask */ |
| mbed_official | 52:a51c77007319 | 81 | #define CR3_SCEN_Reset ((uint16_t)0xFFDF) /*!< USART SC Disable Mask */ |
| mbed_official | 52:a51c77007319 | 82 | |
| mbed_official | 52:a51c77007319 | 83 | #define CR3_NACK_Set ((uint16_t)0x0010) /*!< USART SC NACK Enable Mask */ |
| mbed_official | 52:a51c77007319 | 84 | #define CR3_NACK_Reset ((uint16_t)0xFFEF) /*!< USART SC NACK Disable Mask */ |
| mbed_official | 52:a51c77007319 | 85 | |
| mbed_official | 52:a51c77007319 | 86 | #define CR3_HDSEL_Set ((uint16_t)0x0008) /*!< USART Half-Duplex Enable Mask */ |
| mbed_official | 52:a51c77007319 | 87 | #define CR3_HDSEL_Reset ((uint16_t)0xFFF7) /*!< USART Half-Duplex Disable Mask */ |
| mbed_official | 52:a51c77007319 | 88 | |
| mbed_official | 52:a51c77007319 | 89 | #define CR3_IRLP_Mask ((uint16_t)0xFFFB) /*!< USART IrDA LowPower mode Mask */ |
| mbed_official | 52:a51c77007319 | 90 | #define CR3_CLEAR_Mask ((uint16_t)0xFCFF) /*!< USART CR3 Mask */ |
| mbed_official | 52:a51c77007319 | 91 | |
| mbed_official | 52:a51c77007319 | 92 | #define CR3_IREN_Set ((uint16_t)0x0002) /*!< USART IrDA Enable Mask */ |
| mbed_official | 52:a51c77007319 | 93 | #define CR3_IREN_Reset ((uint16_t)0xFFFD) /*!< USART IrDA Disable Mask */ |
| mbed_official | 52:a51c77007319 | 94 | #define GTPR_LSB_Mask ((uint16_t)0x00FF) /*!< Guard Time Register LSB Mask */ |
| mbed_official | 52:a51c77007319 | 95 | #define GTPR_MSB_Mask ((uint16_t)0xFF00) /*!< Guard Time Register MSB Mask */ |
| mbed_official | 52:a51c77007319 | 96 | #define IT_Mask ((uint16_t)0x001F) /*!< USART Interrupt Mask */ |
| mbed_official | 52:a51c77007319 | 97 | |
| mbed_official | 52:a51c77007319 | 98 | /* USART OverSampling-8 Mask */ |
| mbed_official | 52:a51c77007319 | 99 | #define CR1_OVER8_Set ((u16)0x8000) /* USART OVER8 mode Enable Mask */ |
| mbed_official | 52:a51c77007319 | 100 | #define CR1_OVER8_Reset ((u16)0x7FFF) /* USART OVER8 mode Disable Mask */ |
| mbed_official | 52:a51c77007319 | 101 | |
| mbed_official | 52:a51c77007319 | 102 | /* USART One Bit Sampling Mask */ |
| mbed_official | 52:a51c77007319 | 103 | #define CR3_ONEBITE_Set ((u16)0x0800) /* USART ONEBITE mode Enable Mask */ |
| mbed_official | 52:a51c77007319 | 104 | #define CR3_ONEBITE_Reset ((u16)0xF7FF) /* USART ONEBITE mode Disable Mask */ |
| mbed_official | 52:a51c77007319 | 105 | |
| mbed_official | 52:a51c77007319 | 106 | /** |
| mbed_official | 52:a51c77007319 | 107 | * @} |
| mbed_official | 52:a51c77007319 | 108 | */ |
| mbed_official | 52:a51c77007319 | 109 | |
| mbed_official | 52:a51c77007319 | 110 | /** @defgroup USART_Private_Macros |
| mbed_official | 52:a51c77007319 | 111 | * @{ |
| mbed_official | 52:a51c77007319 | 112 | */ |
| mbed_official | 52:a51c77007319 | 113 | |
| mbed_official | 52:a51c77007319 | 114 | /** |
| mbed_official | 52:a51c77007319 | 115 | * @} |
| mbed_official | 52:a51c77007319 | 116 | */ |
| mbed_official | 52:a51c77007319 | 117 | |
| mbed_official | 52:a51c77007319 | 118 | /** @defgroup USART_Private_Variables |
| mbed_official | 52:a51c77007319 | 119 | * @{ |
| mbed_official | 52:a51c77007319 | 120 | */ |
| mbed_official | 52:a51c77007319 | 121 | |
| mbed_official | 52:a51c77007319 | 122 | /** |
| mbed_official | 52:a51c77007319 | 123 | * @} |
| mbed_official | 52:a51c77007319 | 124 | */ |
| mbed_official | 52:a51c77007319 | 125 | |
| mbed_official | 52:a51c77007319 | 126 | /** @defgroup USART_Private_FunctionPrototypes |
| mbed_official | 52:a51c77007319 | 127 | * @{ |
| mbed_official | 52:a51c77007319 | 128 | */ |
| mbed_official | 52:a51c77007319 | 129 | |
| mbed_official | 52:a51c77007319 | 130 | /** |
| mbed_official | 52:a51c77007319 | 131 | * @} |
| mbed_official | 52:a51c77007319 | 132 | */ |
| mbed_official | 52:a51c77007319 | 133 | |
| mbed_official | 52:a51c77007319 | 134 | /** @defgroup USART_Private_Functions |
| mbed_official | 52:a51c77007319 | 135 | * @{ |
| mbed_official | 52:a51c77007319 | 136 | */ |
| mbed_official | 52:a51c77007319 | 137 | |
| mbed_official | 52:a51c77007319 | 138 | /** |
| mbed_official | 52:a51c77007319 | 139 | * @brief Deinitializes the USARTx peripheral registers to their default reset values. |
| mbed_official | 52:a51c77007319 | 140 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 141 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 142 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 143 | * @retval None |
| mbed_official | 52:a51c77007319 | 144 | */ |
| mbed_official | 52:a51c77007319 | 145 | void USART_DeInit(USART_TypeDef* USARTx) |
| mbed_official | 52:a51c77007319 | 146 | { |
| mbed_official | 52:a51c77007319 | 147 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 148 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 149 | |
| mbed_official | 52:a51c77007319 | 150 | if (USARTx == USART1) |
| mbed_official | 52:a51c77007319 | 151 | { |
| mbed_official | 52:a51c77007319 | 152 | RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, ENABLE); |
| mbed_official | 52:a51c77007319 | 153 | RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, DISABLE); |
| mbed_official | 52:a51c77007319 | 154 | } |
| mbed_official | 52:a51c77007319 | 155 | else if (USARTx == USART2) |
| mbed_official | 52:a51c77007319 | 156 | { |
| mbed_official | 52:a51c77007319 | 157 | RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, ENABLE); |
| mbed_official | 52:a51c77007319 | 158 | RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, DISABLE); |
| mbed_official | 52:a51c77007319 | 159 | } |
| mbed_official | 52:a51c77007319 | 160 | else if (USARTx == USART3) |
| mbed_official | 52:a51c77007319 | 161 | { |
| mbed_official | 52:a51c77007319 | 162 | RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART3, ENABLE); |
| mbed_official | 52:a51c77007319 | 163 | RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART3, DISABLE); |
| mbed_official | 52:a51c77007319 | 164 | } |
| mbed_official | 52:a51c77007319 | 165 | else if (USARTx == UART4) |
| mbed_official | 52:a51c77007319 | 166 | { |
| mbed_official | 52:a51c77007319 | 167 | RCC_APB1PeriphResetCmd(RCC_APB1Periph_UART4, ENABLE); |
| mbed_official | 52:a51c77007319 | 168 | RCC_APB1PeriphResetCmd(RCC_APB1Periph_UART4, DISABLE); |
| mbed_official | 52:a51c77007319 | 169 | } |
| mbed_official | 52:a51c77007319 | 170 | else |
| mbed_official | 52:a51c77007319 | 171 | { |
| mbed_official | 52:a51c77007319 | 172 | if (USARTx == UART5) |
| mbed_official | 52:a51c77007319 | 173 | { |
| mbed_official | 52:a51c77007319 | 174 | RCC_APB1PeriphResetCmd(RCC_APB1Periph_UART5, ENABLE); |
| mbed_official | 52:a51c77007319 | 175 | RCC_APB1PeriphResetCmd(RCC_APB1Periph_UART5, DISABLE); |
| mbed_official | 52:a51c77007319 | 176 | } |
| mbed_official | 52:a51c77007319 | 177 | } |
| mbed_official | 52:a51c77007319 | 178 | } |
| mbed_official | 52:a51c77007319 | 179 | |
| mbed_official | 52:a51c77007319 | 180 | /** |
| mbed_official | 52:a51c77007319 | 181 | * @brief Initializes the USARTx peripheral according to the specified |
| mbed_official | 52:a51c77007319 | 182 | * parameters in the USART_InitStruct . |
| mbed_official | 52:a51c77007319 | 183 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 184 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 185 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 186 | * @param USART_InitStruct: pointer to a USART_InitTypeDef structure |
| mbed_official | 52:a51c77007319 | 187 | * that contains the configuration information for the specified USART |
| mbed_official | 52:a51c77007319 | 188 | * peripheral. |
| mbed_official | 52:a51c77007319 | 189 | * @retval None |
| mbed_official | 52:a51c77007319 | 190 | */ |
| mbed_official | 52:a51c77007319 | 191 | void USART_Init(USART_TypeDef* USARTx, USART_InitTypeDef* USART_InitStruct) |
| mbed_official | 52:a51c77007319 | 192 | { |
| mbed_official | 52:a51c77007319 | 193 | uint32_t tmpreg = 0x00, apbclock = 0x00; |
| mbed_official | 52:a51c77007319 | 194 | uint32_t integerdivider = 0x00; |
| mbed_official | 52:a51c77007319 | 195 | uint32_t fractionaldivider = 0x00; |
| mbed_official | 52:a51c77007319 | 196 | uint32_t usartxbase = 0; |
| mbed_official | 52:a51c77007319 | 197 | RCC_ClocksTypeDef RCC_ClocksStatus; |
| mbed_official | 52:a51c77007319 | 198 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 199 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 200 | assert_param(IS_USART_BAUDRATE(USART_InitStruct->USART_BaudRate)); |
| mbed_official | 52:a51c77007319 | 201 | assert_param(IS_USART_WORD_LENGTH(USART_InitStruct->USART_WordLength)); |
| mbed_official | 52:a51c77007319 | 202 | assert_param(IS_USART_STOPBITS(USART_InitStruct->USART_StopBits)); |
| mbed_official | 52:a51c77007319 | 203 | assert_param(IS_USART_PARITY(USART_InitStruct->USART_Parity)); |
| mbed_official | 52:a51c77007319 | 204 | assert_param(IS_USART_MODE(USART_InitStruct->USART_Mode)); |
| mbed_official | 52:a51c77007319 | 205 | assert_param(IS_USART_HARDWARE_FLOW_CONTROL(USART_InitStruct->USART_HardwareFlowControl)); |
| mbed_official | 52:a51c77007319 | 206 | /* The hardware flow control is available only for USART1, USART2 and USART3 */ |
| mbed_official | 52:a51c77007319 | 207 | if (USART_InitStruct->USART_HardwareFlowControl != USART_HardwareFlowControl_None) |
| mbed_official | 52:a51c77007319 | 208 | { |
| mbed_official | 52:a51c77007319 | 209 | assert_param(IS_USART_123_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 210 | } |
| mbed_official | 52:a51c77007319 | 211 | |
| mbed_official | 52:a51c77007319 | 212 | usartxbase = (uint32_t)USARTx; |
| mbed_official | 52:a51c77007319 | 213 | |
| mbed_official | 52:a51c77007319 | 214 | /*---------------------------- USART CR2 Configuration -----------------------*/ |
| mbed_official | 52:a51c77007319 | 215 | tmpreg = USARTx->CR2; |
| mbed_official | 52:a51c77007319 | 216 | /* Clear STOP[13:12] bits */ |
| mbed_official | 52:a51c77007319 | 217 | tmpreg &= CR2_STOP_CLEAR_Mask; |
| mbed_official | 52:a51c77007319 | 218 | /* Configure the USART Stop Bits, Clock, CPOL, CPHA and LastBit ------------*/ |
| mbed_official | 52:a51c77007319 | 219 | /* Set STOP[13:12] bits according to USART_StopBits value */ |
| mbed_official | 52:a51c77007319 | 220 | tmpreg |= (uint32_t)USART_InitStruct->USART_StopBits; |
| mbed_official | 52:a51c77007319 | 221 | |
| mbed_official | 52:a51c77007319 | 222 | /* Write to USART CR2 */ |
| mbed_official | 52:a51c77007319 | 223 | USARTx->CR2 = (uint16_t)tmpreg; |
| mbed_official | 52:a51c77007319 | 224 | |
| mbed_official | 52:a51c77007319 | 225 | /*---------------------------- USART CR1 Configuration -----------------------*/ |
| mbed_official | 52:a51c77007319 | 226 | tmpreg = USARTx->CR1; |
| mbed_official | 52:a51c77007319 | 227 | /* Clear M, PCE, PS, TE and RE bits */ |
| mbed_official | 52:a51c77007319 | 228 | tmpreg &= CR1_CLEAR_Mask; |
| mbed_official | 52:a51c77007319 | 229 | /* Configure the USART Word Length, Parity and mode ----------------------- */ |
| mbed_official | 52:a51c77007319 | 230 | /* Set the M bits according to USART_WordLength value */ |
| mbed_official | 52:a51c77007319 | 231 | /* Set PCE and PS bits according to USART_Parity value */ |
| mbed_official | 52:a51c77007319 | 232 | /* Set TE and RE bits according to USART_Mode value */ |
| mbed_official | 52:a51c77007319 | 233 | tmpreg |= (uint32_t)USART_InitStruct->USART_WordLength | USART_InitStruct->USART_Parity | |
| mbed_official | 52:a51c77007319 | 234 | USART_InitStruct->USART_Mode; |
| mbed_official | 52:a51c77007319 | 235 | /* Write to USART CR1 */ |
| mbed_official | 52:a51c77007319 | 236 | USARTx->CR1 = (uint16_t)tmpreg; |
| mbed_official | 52:a51c77007319 | 237 | |
| mbed_official | 52:a51c77007319 | 238 | /*---------------------------- USART CR3 Configuration -----------------------*/ |
| mbed_official | 52:a51c77007319 | 239 | tmpreg = USARTx->CR3; |
| mbed_official | 52:a51c77007319 | 240 | /* Clear CTSE and RTSE bits */ |
| mbed_official | 52:a51c77007319 | 241 | tmpreg &= CR3_CLEAR_Mask; |
| mbed_official | 52:a51c77007319 | 242 | /* Configure the USART HFC -------------------------------------------------*/ |
| mbed_official | 52:a51c77007319 | 243 | /* Set CTSE and RTSE bits according to USART_HardwareFlowControl value */ |
| mbed_official | 52:a51c77007319 | 244 | tmpreg |= USART_InitStruct->USART_HardwareFlowControl; |
| mbed_official | 52:a51c77007319 | 245 | /* Write to USART CR3 */ |
| mbed_official | 52:a51c77007319 | 246 | USARTx->CR3 = (uint16_t)tmpreg; |
| mbed_official | 52:a51c77007319 | 247 | |
| mbed_official | 52:a51c77007319 | 248 | /*---------------------------- USART BRR Configuration -----------------------*/ |
| mbed_official | 52:a51c77007319 | 249 | /* Configure the USART Baud Rate -------------------------------------------*/ |
| mbed_official | 52:a51c77007319 | 250 | RCC_GetClocksFreq(&RCC_ClocksStatus); |
| mbed_official | 52:a51c77007319 | 251 | if (usartxbase == USART1_BASE) |
| mbed_official | 52:a51c77007319 | 252 | { |
| mbed_official | 52:a51c77007319 | 253 | apbclock = RCC_ClocksStatus.PCLK2_Frequency; |
| mbed_official | 52:a51c77007319 | 254 | } |
| mbed_official | 52:a51c77007319 | 255 | else |
| mbed_official | 52:a51c77007319 | 256 | { |
| mbed_official | 52:a51c77007319 | 257 | apbclock = RCC_ClocksStatus.PCLK1_Frequency; |
| mbed_official | 52:a51c77007319 | 258 | } |
| mbed_official | 52:a51c77007319 | 259 | |
| mbed_official | 52:a51c77007319 | 260 | /* Determine the integer part */ |
| mbed_official | 52:a51c77007319 | 261 | if ((USARTx->CR1 & CR1_OVER8_Set) != 0) |
| mbed_official | 52:a51c77007319 | 262 | { |
| mbed_official | 52:a51c77007319 | 263 | /* Integer part computing in case Oversampling mode is 8 Samples */ |
| mbed_official | 52:a51c77007319 | 264 | integerdivider = ((25 * apbclock) / (2 * (USART_InitStruct->USART_BaudRate))); |
| mbed_official | 52:a51c77007319 | 265 | } |
| mbed_official | 52:a51c77007319 | 266 | else /* if ((USARTx->CR1 & CR1_OVER8_Set) == 0) */ |
| mbed_official | 52:a51c77007319 | 267 | { |
| mbed_official | 52:a51c77007319 | 268 | /* Integer part computing in case Oversampling mode is 16 Samples */ |
| mbed_official | 52:a51c77007319 | 269 | integerdivider = ((25 * apbclock) / (4 * (USART_InitStruct->USART_BaudRate))); |
| mbed_official | 52:a51c77007319 | 270 | } |
| mbed_official | 52:a51c77007319 | 271 | tmpreg = (integerdivider / 100) << 4; |
| mbed_official | 52:a51c77007319 | 272 | |
| mbed_official | 52:a51c77007319 | 273 | /* Determine the fractional part */ |
| mbed_official | 52:a51c77007319 | 274 | fractionaldivider = integerdivider - (100 * (tmpreg >> 4)); |
| mbed_official | 52:a51c77007319 | 275 | |
| mbed_official | 52:a51c77007319 | 276 | /* Implement the fractional part in the register */ |
| mbed_official | 52:a51c77007319 | 277 | if ((USARTx->CR1 & CR1_OVER8_Set) != 0) |
| mbed_official | 52:a51c77007319 | 278 | { |
| mbed_official | 52:a51c77007319 | 279 | tmpreg |= ((((fractionaldivider * 8) + 50) / 100)) & ((uint8_t)0x07); |
| mbed_official | 52:a51c77007319 | 280 | } |
| mbed_official | 52:a51c77007319 | 281 | else /* if ((USARTx->CR1 & CR1_OVER8_Set) == 0) */ |
| mbed_official | 52:a51c77007319 | 282 | { |
| mbed_official | 52:a51c77007319 | 283 | tmpreg |= ((((fractionaldivider * 16) + 50) / 100)) & ((uint8_t)0x0F); |
| mbed_official | 52:a51c77007319 | 284 | } |
| mbed_official | 52:a51c77007319 | 285 | |
| mbed_official | 52:a51c77007319 | 286 | /* Write to USART BRR */ |
| mbed_official | 52:a51c77007319 | 287 | USARTx->BRR = (uint16_t)tmpreg; |
| mbed_official | 52:a51c77007319 | 288 | } |
| mbed_official | 52:a51c77007319 | 289 | |
| mbed_official | 52:a51c77007319 | 290 | /** |
| mbed_official | 52:a51c77007319 | 291 | * @brief Fills each USART_InitStruct member with its default value. |
| mbed_official | 52:a51c77007319 | 292 | * @param USART_InitStruct: pointer to a USART_InitTypeDef structure |
| mbed_official | 52:a51c77007319 | 293 | * which will be initialized. |
| mbed_official | 52:a51c77007319 | 294 | * @retval None |
| mbed_official | 52:a51c77007319 | 295 | */ |
| mbed_official | 52:a51c77007319 | 296 | void USART_StructInit(USART_InitTypeDef* USART_InitStruct) |
| mbed_official | 52:a51c77007319 | 297 | { |
| mbed_official | 52:a51c77007319 | 298 | /* USART_InitStruct members default value */ |
| mbed_official | 52:a51c77007319 | 299 | USART_InitStruct->USART_BaudRate = 9600; |
| mbed_official | 52:a51c77007319 | 300 | USART_InitStruct->USART_WordLength = USART_WordLength_8b; |
| mbed_official | 52:a51c77007319 | 301 | USART_InitStruct->USART_StopBits = USART_StopBits_1; |
| mbed_official | 52:a51c77007319 | 302 | USART_InitStruct->USART_Parity = USART_Parity_No ; |
| mbed_official | 52:a51c77007319 | 303 | USART_InitStruct->USART_Mode = USART_Mode_Rx | USART_Mode_Tx; |
| mbed_official | 52:a51c77007319 | 304 | USART_InitStruct->USART_HardwareFlowControl = USART_HardwareFlowControl_None; |
| mbed_official | 52:a51c77007319 | 305 | } |
| mbed_official | 52:a51c77007319 | 306 | |
| mbed_official | 52:a51c77007319 | 307 | /** |
| mbed_official | 52:a51c77007319 | 308 | * @brief Initializes the USARTx peripheral Clock according to the |
| mbed_official | 52:a51c77007319 | 309 | * specified parameters in the USART_ClockInitStruct . |
| mbed_official | 52:a51c77007319 | 310 | * @param USARTx: where x can be 1, 2, 3 to select the USART peripheral. |
| mbed_official | 52:a51c77007319 | 311 | * @param USART_ClockInitStruct: pointer to a USART_ClockInitTypeDef |
| mbed_official | 52:a51c77007319 | 312 | * structure that contains the configuration information for the specified |
| mbed_official | 52:a51c77007319 | 313 | * USART peripheral. |
| mbed_official | 52:a51c77007319 | 314 | * @note The Smart Card and Synchronous modes are not available for UART4 and UART5. |
| mbed_official | 52:a51c77007319 | 315 | * @retval None |
| mbed_official | 52:a51c77007319 | 316 | */ |
| mbed_official | 52:a51c77007319 | 317 | void USART_ClockInit(USART_TypeDef* USARTx, USART_ClockInitTypeDef* USART_ClockInitStruct) |
| mbed_official | 52:a51c77007319 | 318 | { |
| mbed_official | 52:a51c77007319 | 319 | uint32_t tmpreg = 0x00; |
| mbed_official | 52:a51c77007319 | 320 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 321 | assert_param(IS_USART_123_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 322 | assert_param(IS_USART_CLOCK(USART_ClockInitStruct->USART_Clock)); |
| mbed_official | 52:a51c77007319 | 323 | assert_param(IS_USART_CPOL(USART_ClockInitStruct->USART_CPOL)); |
| mbed_official | 52:a51c77007319 | 324 | assert_param(IS_USART_CPHA(USART_ClockInitStruct->USART_CPHA)); |
| mbed_official | 52:a51c77007319 | 325 | assert_param(IS_USART_LASTBIT(USART_ClockInitStruct->USART_LastBit)); |
| mbed_official | 52:a51c77007319 | 326 | |
| mbed_official | 52:a51c77007319 | 327 | /*---------------------------- USART CR2 Configuration -----------------------*/ |
| mbed_official | 52:a51c77007319 | 328 | tmpreg = USARTx->CR2; |
| mbed_official | 52:a51c77007319 | 329 | /* Clear CLKEN, CPOL, CPHA and LBCL bits */ |
| mbed_official | 52:a51c77007319 | 330 | tmpreg &= CR2_CLOCK_CLEAR_Mask; |
| mbed_official | 52:a51c77007319 | 331 | /* Configure the USART Clock, CPOL, CPHA and LastBit ------------*/ |
| mbed_official | 52:a51c77007319 | 332 | /* Set CLKEN bit according to USART_Clock value */ |
| mbed_official | 52:a51c77007319 | 333 | /* Set CPOL bit according to USART_CPOL value */ |
| mbed_official | 52:a51c77007319 | 334 | /* Set CPHA bit according to USART_CPHA value */ |
| mbed_official | 52:a51c77007319 | 335 | /* Set LBCL bit according to USART_LastBit value */ |
| mbed_official | 52:a51c77007319 | 336 | tmpreg |= (uint32_t)USART_ClockInitStruct->USART_Clock | USART_ClockInitStruct->USART_CPOL | |
| mbed_official | 52:a51c77007319 | 337 | USART_ClockInitStruct->USART_CPHA | USART_ClockInitStruct->USART_LastBit; |
| mbed_official | 52:a51c77007319 | 338 | /* Write to USART CR2 */ |
| mbed_official | 52:a51c77007319 | 339 | USARTx->CR2 = (uint16_t)tmpreg; |
| mbed_official | 52:a51c77007319 | 340 | } |
| mbed_official | 52:a51c77007319 | 341 | |
| mbed_official | 52:a51c77007319 | 342 | /** |
| mbed_official | 52:a51c77007319 | 343 | * @brief Fills each USART_ClockInitStruct member with its default value. |
| mbed_official | 52:a51c77007319 | 344 | * @param USART_ClockInitStruct: pointer to a USART_ClockInitTypeDef |
| mbed_official | 52:a51c77007319 | 345 | * structure which will be initialized. |
| mbed_official | 52:a51c77007319 | 346 | * @retval None |
| mbed_official | 52:a51c77007319 | 347 | */ |
| mbed_official | 52:a51c77007319 | 348 | void USART_ClockStructInit(USART_ClockInitTypeDef* USART_ClockInitStruct) |
| mbed_official | 52:a51c77007319 | 349 | { |
| mbed_official | 52:a51c77007319 | 350 | /* USART_ClockInitStruct members default value */ |
| mbed_official | 52:a51c77007319 | 351 | USART_ClockInitStruct->USART_Clock = USART_Clock_Disable; |
| mbed_official | 52:a51c77007319 | 352 | USART_ClockInitStruct->USART_CPOL = USART_CPOL_Low; |
| mbed_official | 52:a51c77007319 | 353 | USART_ClockInitStruct->USART_CPHA = USART_CPHA_1Edge; |
| mbed_official | 52:a51c77007319 | 354 | USART_ClockInitStruct->USART_LastBit = USART_LastBit_Disable; |
| mbed_official | 52:a51c77007319 | 355 | } |
| mbed_official | 52:a51c77007319 | 356 | |
| mbed_official | 52:a51c77007319 | 357 | /** |
| mbed_official | 52:a51c77007319 | 358 | * @brief Enables or disables the specified USART peripheral. |
| mbed_official | 52:a51c77007319 | 359 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 360 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 361 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 362 | * @param NewState: new state of the USARTx peripheral. |
| mbed_official | 52:a51c77007319 | 363 | * This parameter can be: ENABLE or DISABLE. |
| mbed_official | 52:a51c77007319 | 364 | * @retval None |
| mbed_official | 52:a51c77007319 | 365 | */ |
| mbed_official | 52:a51c77007319 | 366 | void USART_Cmd(USART_TypeDef* USARTx, FunctionalState NewState) |
| mbed_official | 52:a51c77007319 | 367 | { |
| mbed_official | 52:a51c77007319 | 368 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 369 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 370 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| mbed_official | 52:a51c77007319 | 371 | |
| mbed_official | 52:a51c77007319 | 372 | if (NewState != DISABLE) |
| mbed_official | 52:a51c77007319 | 373 | { |
| mbed_official | 52:a51c77007319 | 374 | /* Enable the selected USART by setting the UE bit in the CR1 register */ |
| mbed_official | 52:a51c77007319 | 375 | USARTx->CR1 |= CR1_UE_Set; |
| mbed_official | 52:a51c77007319 | 376 | } |
| mbed_official | 52:a51c77007319 | 377 | else |
| mbed_official | 52:a51c77007319 | 378 | { |
| mbed_official | 52:a51c77007319 | 379 | /* Disable the selected USART by clearing the UE bit in the CR1 register */ |
| mbed_official | 52:a51c77007319 | 380 | USARTx->CR1 &= CR1_UE_Reset; |
| mbed_official | 52:a51c77007319 | 381 | } |
| mbed_official | 52:a51c77007319 | 382 | } |
| mbed_official | 52:a51c77007319 | 383 | |
| mbed_official | 52:a51c77007319 | 384 | /** |
| mbed_official | 52:a51c77007319 | 385 | * @brief Enables or disables the specified USART interrupts. |
| mbed_official | 52:a51c77007319 | 386 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 387 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 388 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 389 | * @param USART_IT: specifies the USART interrupt sources to be enabled or disabled. |
| mbed_official | 52:a51c77007319 | 390 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 391 | * @arg USART_IT_CTS: CTS change interrupt (not available for UART4 and UART5) |
| mbed_official | 52:a51c77007319 | 392 | * @arg USART_IT_LBD: LIN Break detection interrupt |
| mbed_official | 52:a51c77007319 | 393 | * @arg USART_IT_TXE: Transmit Data Register empty interrupt |
| mbed_official | 52:a51c77007319 | 394 | * @arg USART_IT_TC: Transmission complete interrupt |
| mbed_official | 52:a51c77007319 | 395 | * @arg USART_IT_RXNE: Receive Data register not empty interrupt |
| mbed_official | 52:a51c77007319 | 396 | * @arg USART_IT_IDLE: Idle line detection interrupt |
| mbed_official | 52:a51c77007319 | 397 | * @arg USART_IT_PE: Parity Error interrupt |
| mbed_official | 52:a51c77007319 | 398 | * @arg USART_IT_ERR: Error interrupt(Frame error, noise error, overrun error) |
| mbed_official | 52:a51c77007319 | 399 | * @param NewState: new state of the specified USARTx interrupts. |
| mbed_official | 52:a51c77007319 | 400 | * This parameter can be: ENABLE or DISABLE. |
| mbed_official | 52:a51c77007319 | 401 | * @retval None |
| mbed_official | 52:a51c77007319 | 402 | */ |
| mbed_official | 52:a51c77007319 | 403 | void USART_ITConfig(USART_TypeDef* USARTx, uint16_t USART_IT, FunctionalState NewState) |
| mbed_official | 52:a51c77007319 | 404 | { |
| mbed_official | 52:a51c77007319 | 405 | uint32_t usartreg = 0x00, itpos = 0x00, itmask = 0x00; |
| mbed_official | 52:a51c77007319 | 406 | uint32_t usartxbase = 0x00; |
| mbed_official | 52:a51c77007319 | 407 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 408 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 409 | assert_param(IS_USART_CONFIG_IT(USART_IT)); |
| mbed_official | 52:a51c77007319 | 410 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| mbed_official | 52:a51c77007319 | 411 | /* The CTS interrupt is not available for UART4 and UART5 */ |
| mbed_official | 52:a51c77007319 | 412 | if (USART_IT == USART_IT_CTS) |
| mbed_official | 52:a51c77007319 | 413 | { |
| mbed_official | 52:a51c77007319 | 414 | assert_param(IS_USART_123_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 415 | } |
| mbed_official | 52:a51c77007319 | 416 | |
| mbed_official | 52:a51c77007319 | 417 | usartxbase = (uint32_t)USARTx; |
| mbed_official | 52:a51c77007319 | 418 | |
| mbed_official | 52:a51c77007319 | 419 | /* Get the USART register index */ |
| mbed_official | 52:a51c77007319 | 420 | usartreg = (((uint8_t)USART_IT) >> 0x05); |
| mbed_official | 52:a51c77007319 | 421 | |
| mbed_official | 52:a51c77007319 | 422 | /* Get the interrupt position */ |
| mbed_official | 52:a51c77007319 | 423 | itpos = USART_IT & IT_Mask; |
| mbed_official | 52:a51c77007319 | 424 | itmask = (((uint32_t)0x01) << itpos); |
| mbed_official | 52:a51c77007319 | 425 | |
| mbed_official | 52:a51c77007319 | 426 | if (usartreg == 0x01) /* The IT is in CR1 register */ |
| mbed_official | 52:a51c77007319 | 427 | { |
| mbed_official | 52:a51c77007319 | 428 | usartxbase += 0x0C; |
| mbed_official | 52:a51c77007319 | 429 | } |
| mbed_official | 52:a51c77007319 | 430 | else if (usartreg == 0x02) /* The IT is in CR2 register */ |
| mbed_official | 52:a51c77007319 | 431 | { |
| mbed_official | 52:a51c77007319 | 432 | usartxbase += 0x10; |
| mbed_official | 52:a51c77007319 | 433 | } |
| mbed_official | 52:a51c77007319 | 434 | else /* The IT is in CR3 register */ |
| mbed_official | 52:a51c77007319 | 435 | { |
| mbed_official | 52:a51c77007319 | 436 | usartxbase += 0x14; |
| mbed_official | 52:a51c77007319 | 437 | } |
| mbed_official | 52:a51c77007319 | 438 | if (NewState != DISABLE) |
| mbed_official | 52:a51c77007319 | 439 | { |
| mbed_official | 52:a51c77007319 | 440 | *(__IO uint32_t*)usartxbase |= itmask; |
| mbed_official | 52:a51c77007319 | 441 | } |
| mbed_official | 52:a51c77007319 | 442 | else |
| mbed_official | 52:a51c77007319 | 443 | { |
| mbed_official | 52:a51c77007319 | 444 | *(__IO uint32_t*)usartxbase &= ~itmask; |
| mbed_official | 52:a51c77007319 | 445 | } |
| mbed_official | 52:a51c77007319 | 446 | } |
| mbed_official | 52:a51c77007319 | 447 | |
| mbed_official | 52:a51c77007319 | 448 | /** |
| mbed_official | 52:a51c77007319 | 449 | * @brief Enables or disables the USARTs DMA interface. |
| mbed_official | 52:a51c77007319 | 450 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 451 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 452 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 453 | * @param USART_DMAReq: specifies the DMA request. |
| mbed_official | 52:a51c77007319 | 454 | * This parameter can be any combination of the following values: |
| mbed_official | 52:a51c77007319 | 455 | * @arg USART_DMAReq_Tx: USART DMA transmit request |
| mbed_official | 52:a51c77007319 | 456 | * @arg USART_DMAReq_Rx: USART DMA receive request |
| mbed_official | 52:a51c77007319 | 457 | * @param NewState: new state of the DMA Request sources. |
| mbed_official | 52:a51c77007319 | 458 | * This parameter can be: ENABLE or DISABLE. |
| mbed_official | 52:a51c77007319 | 459 | * @note The DMA mode is not available for UART5 except in the STM32 |
| mbed_official | 52:a51c77007319 | 460 | * High density value line devices(STM32F10X_HD_VL). |
| mbed_official | 52:a51c77007319 | 461 | * @retval None |
| mbed_official | 52:a51c77007319 | 462 | */ |
| mbed_official | 52:a51c77007319 | 463 | void USART_DMACmd(USART_TypeDef* USARTx, uint16_t USART_DMAReq, FunctionalState NewState) |
| mbed_official | 52:a51c77007319 | 464 | { |
| mbed_official | 52:a51c77007319 | 465 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 466 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 467 | assert_param(IS_USART_DMAREQ(USART_DMAReq)); |
| mbed_official | 52:a51c77007319 | 468 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| mbed_official | 52:a51c77007319 | 469 | if (NewState != DISABLE) |
| mbed_official | 52:a51c77007319 | 470 | { |
| mbed_official | 52:a51c77007319 | 471 | /* Enable the DMA transfer for selected requests by setting the DMAT and/or |
| mbed_official | 52:a51c77007319 | 472 | DMAR bits in the USART CR3 register */ |
| mbed_official | 52:a51c77007319 | 473 | USARTx->CR3 |= USART_DMAReq; |
| mbed_official | 52:a51c77007319 | 474 | } |
| mbed_official | 52:a51c77007319 | 475 | else |
| mbed_official | 52:a51c77007319 | 476 | { |
| mbed_official | 52:a51c77007319 | 477 | /* Disable the DMA transfer for selected requests by clearing the DMAT and/or |
| mbed_official | 52:a51c77007319 | 478 | DMAR bits in the USART CR3 register */ |
| mbed_official | 52:a51c77007319 | 479 | USARTx->CR3 &= (uint16_t)~USART_DMAReq; |
| mbed_official | 52:a51c77007319 | 480 | } |
| mbed_official | 52:a51c77007319 | 481 | } |
| mbed_official | 52:a51c77007319 | 482 | |
| mbed_official | 52:a51c77007319 | 483 | /** |
| mbed_official | 52:a51c77007319 | 484 | * @brief Sets the address of the USART node. |
| mbed_official | 52:a51c77007319 | 485 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 486 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 487 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 488 | * @param USART_Address: Indicates the address of the USART node. |
| mbed_official | 52:a51c77007319 | 489 | * @retval None |
| mbed_official | 52:a51c77007319 | 490 | */ |
| mbed_official | 52:a51c77007319 | 491 | void USART_SetAddress(USART_TypeDef* USARTx, uint8_t USART_Address) |
| mbed_official | 52:a51c77007319 | 492 | { |
| mbed_official | 52:a51c77007319 | 493 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 494 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 495 | assert_param(IS_USART_ADDRESS(USART_Address)); |
| mbed_official | 52:a51c77007319 | 496 | |
| mbed_official | 52:a51c77007319 | 497 | /* Clear the USART address */ |
| mbed_official | 52:a51c77007319 | 498 | USARTx->CR2 &= CR2_Address_Mask; |
| mbed_official | 52:a51c77007319 | 499 | /* Set the USART address node */ |
| mbed_official | 52:a51c77007319 | 500 | USARTx->CR2 |= USART_Address; |
| mbed_official | 52:a51c77007319 | 501 | } |
| mbed_official | 52:a51c77007319 | 502 | |
| mbed_official | 52:a51c77007319 | 503 | /** |
| mbed_official | 52:a51c77007319 | 504 | * @brief Selects the USART WakeUp method. |
| mbed_official | 52:a51c77007319 | 505 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 506 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 507 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 508 | * @param USART_WakeUp: specifies the USART wakeup method. |
| mbed_official | 52:a51c77007319 | 509 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 510 | * @arg USART_WakeUp_IdleLine: WakeUp by an idle line detection |
| mbed_official | 52:a51c77007319 | 511 | * @arg USART_WakeUp_AddressMark: WakeUp by an address mark |
| mbed_official | 52:a51c77007319 | 512 | * @retval None |
| mbed_official | 52:a51c77007319 | 513 | */ |
| mbed_official | 52:a51c77007319 | 514 | void USART_WakeUpConfig(USART_TypeDef* USARTx, uint16_t USART_WakeUp) |
| mbed_official | 52:a51c77007319 | 515 | { |
| mbed_official | 52:a51c77007319 | 516 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 517 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 518 | assert_param(IS_USART_WAKEUP(USART_WakeUp)); |
| mbed_official | 52:a51c77007319 | 519 | |
| mbed_official | 52:a51c77007319 | 520 | USARTx->CR1 &= CR1_WAKE_Mask; |
| mbed_official | 52:a51c77007319 | 521 | USARTx->CR1 |= USART_WakeUp; |
| mbed_official | 52:a51c77007319 | 522 | } |
| mbed_official | 52:a51c77007319 | 523 | |
| mbed_official | 52:a51c77007319 | 524 | /** |
| mbed_official | 52:a51c77007319 | 525 | * @brief Determines if the USART is in mute mode or not. |
| mbed_official | 52:a51c77007319 | 526 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 527 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 528 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 529 | * @param NewState: new state of the USART mute mode. |
| mbed_official | 52:a51c77007319 | 530 | * This parameter can be: ENABLE or DISABLE. |
| mbed_official | 52:a51c77007319 | 531 | * @retval None |
| mbed_official | 52:a51c77007319 | 532 | */ |
| mbed_official | 52:a51c77007319 | 533 | void USART_ReceiverWakeUpCmd(USART_TypeDef* USARTx, FunctionalState NewState) |
| mbed_official | 52:a51c77007319 | 534 | { |
| mbed_official | 52:a51c77007319 | 535 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 536 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 537 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| mbed_official | 52:a51c77007319 | 538 | |
| mbed_official | 52:a51c77007319 | 539 | if (NewState != DISABLE) |
| mbed_official | 52:a51c77007319 | 540 | { |
| mbed_official | 52:a51c77007319 | 541 | /* Enable the USART mute mode by setting the RWU bit in the CR1 register */ |
| mbed_official | 52:a51c77007319 | 542 | USARTx->CR1 |= CR1_RWU_Set; |
| mbed_official | 52:a51c77007319 | 543 | } |
| mbed_official | 52:a51c77007319 | 544 | else |
| mbed_official | 52:a51c77007319 | 545 | { |
| mbed_official | 52:a51c77007319 | 546 | /* Disable the USART mute mode by clearing the RWU bit in the CR1 register */ |
| mbed_official | 52:a51c77007319 | 547 | USARTx->CR1 &= CR1_RWU_Reset; |
| mbed_official | 52:a51c77007319 | 548 | } |
| mbed_official | 52:a51c77007319 | 549 | } |
| mbed_official | 52:a51c77007319 | 550 | |
| mbed_official | 52:a51c77007319 | 551 | /** |
| mbed_official | 52:a51c77007319 | 552 | * @brief Sets the USART LIN Break detection length. |
| mbed_official | 52:a51c77007319 | 553 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 554 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 555 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 556 | * @param USART_LINBreakDetectLength: specifies the LIN break detection length. |
| mbed_official | 52:a51c77007319 | 557 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 558 | * @arg USART_LINBreakDetectLength_10b: 10-bit break detection |
| mbed_official | 52:a51c77007319 | 559 | * @arg USART_LINBreakDetectLength_11b: 11-bit break detection |
| mbed_official | 52:a51c77007319 | 560 | * @retval None |
| mbed_official | 52:a51c77007319 | 561 | */ |
| mbed_official | 52:a51c77007319 | 562 | void USART_LINBreakDetectLengthConfig(USART_TypeDef* USARTx, uint16_t USART_LINBreakDetectLength) |
| mbed_official | 52:a51c77007319 | 563 | { |
| mbed_official | 52:a51c77007319 | 564 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 565 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 566 | assert_param(IS_USART_LIN_BREAK_DETECT_LENGTH(USART_LINBreakDetectLength)); |
| mbed_official | 52:a51c77007319 | 567 | |
| mbed_official | 52:a51c77007319 | 568 | USARTx->CR2 &= CR2_LBDL_Mask; |
| mbed_official | 52:a51c77007319 | 569 | USARTx->CR2 |= USART_LINBreakDetectLength; |
| mbed_official | 52:a51c77007319 | 570 | } |
| mbed_official | 52:a51c77007319 | 571 | |
| mbed_official | 52:a51c77007319 | 572 | /** |
| mbed_official | 52:a51c77007319 | 573 | * @brief Enables or disables the USARTs LIN mode. |
| mbed_official | 52:a51c77007319 | 574 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 575 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 576 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 577 | * @param NewState: new state of the USART LIN mode. |
| mbed_official | 52:a51c77007319 | 578 | * This parameter can be: ENABLE or DISABLE. |
| mbed_official | 52:a51c77007319 | 579 | * @retval None |
| mbed_official | 52:a51c77007319 | 580 | */ |
| mbed_official | 52:a51c77007319 | 581 | void USART_LINCmd(USART_TypeDef* USARTx, FunctionalState NewState) |
| mbed_official | 52:a51c77007319 | 582 | { |
| mbed_official | 52:a51c77007319 | 583 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 584 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 585 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| mbed_official | 52:a51c77007319 | 586 | |
| mbed_official | 52:a51c77007319 | 587 | if (NewState != DISABLE) |
| mbed_official | 52:a51c77007319 | 588 | { |
| mbed_official | 52:a51c77007319 | 589 | /* Enable the LIN mode by setting the LINEN bit in the CR2 register */ |
| mbed_official | 52:a51c77007319 | 590 | USARTx->CR2 |= CR2_LINEN_Set; |
| mbed_official | 52:a51c77007319 | 591 | } |
| mbed_official | 52:a51c77007319 | 592 | else |
| mbed_official | 52:a51c77007319 | 593 | { |
| mbed_official | 52:a51c77007319 | 594 | /* Disable the LIN mode by clearing the LINEN bit in the CR2 register */ |
| mbed_official | 52:a51c77007319 | 595 | USARTx->CR2 &= CR2_LINEN_Reset; |
| mbed_official | 52:a51c77007319 | 596 | } |
| mbed_official | 52:a51c77007319 | 597 | } |
| mbed_official | 52:a51c77007319 | 598 | |
| mbed_official | 52:a51c77007319 | 599 | /** |
| mbed_official | 52:a51c77007319 | 600 | * @brief Transmits single data through the USARTx peripheral. |
| mbed_official | 52:a51c77007319 | 601 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 602 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 603 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 604 | * @param Data: the data to transmit. |
| mbed_official | 52:a51c77007319 | 605 | * @retval None |
| mbed_official | 52:a51c77007319 | 606 | */ |
| mbed_official | 52:a51c77007319 | 607 | void USART_SendData(USART_TypeDef* USARTx, uint16_t Data) |
| mbed_official | 52:a51c77007319 | 608 | { |
| mbed_official | 52:a51c77007319 | 609 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 610 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 611 | assert_param(IS_USART_DATA(Data)); |
| mbed_official | 52:a51c77007319 | 612 | |
| mbed_official | 52:a51c77007319 | 613 | /* Transmit Data */ |
| mbed_official | 52:a51c77007319 | 614 | USARTx->DR = (Data & (uint16_t)0x01FF); |
| mbed_official | 52:a51c77007319 | 615 | } |
| mbed_official | 52:a51c77007319 | 616 | |
| mbed_official | 52:a51c77007319 | 617 | /** |
| mbed_official | 52:a51c77007319 | 618 | * @brief Returns the most recent received data by the USARTx peripheral. |
| mbed_official | 52:a51c77007319 | 619 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 620 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 621 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 622 | * @retval The received data. |
| mbed_official | 52:a51c77007319 | 623 | */ |
| mbed_official | 52:a51c77007319 | 624 | uint16_t USART_ReceiveData(USART_TypeDef* USARTx) |
| mbed_official | 52:a51c77007319 | 625 | { |
| mbed_official | 52:a51c77007319 | 626 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 627 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 628 | |
| mbed_official | 52:a51c77007319 | 629 | /* Receive Data */ |
| mbed_official | 52:a51c77007319 | 630 | return (uint16_t)(USARTx->DR & (uint16_t)0x01FF); |
| mbed_official | 52:a51c77007319 | 631 | } |
| mbed_official | 52:a51c77007319 | 632 | |
| mbed_official | 52:a51c77007319 | 633 | /** |
| mbed_official | 52:a51c77007319 | 634 | * @brief Transmits break characters. |
| mbed_official | 52:a51c77007319 | 635 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 636 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 637 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 638 | * @retval None |
| mbed_official | 52:a51c77007319 | 639 | */ |
| mbed_official | 52:a51c77007319 | 640 | void USART_SendBreak(USART_TypeDef* USARTx) |
| mbed_official | 52:a51c77007319 | 641 | { |
| mbed_official | 52:a51c77007319 | 642 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 643 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 644 | |
| mbed_official | 52:a51c77007319 | 645 | /* Send break characters */ |
| mbed_official | 52:a51c77007319 | 646 | USARTx->CR1 |= CR1_SBK_Set; |
| mbed_official | 52:a51c77007319 | 647 | } |
| mbed_official | 52:a51c77007319 | 648 | |
| mbed_official | 52:a51c77007319 | 649 | /** |
| mbed_official | 52:a51c77007319 | 650 | * @brief Sets the specified USART guard time. |
| mbed_official | 52:a51c77007319 | 651 | * @param USARTx: where x can be 1, 2 or 3 to select the USART peripheral. |
| mbed_official | 52:a51c77007319 | 652 | * @param USART_GuardTime: specifies the guard time. |
| mbed_official | 52:a51c77007319 | 653 | * @note The guard time bits are not available for UART4 and UART5. |
| mbed_official | 52:a51c77007319 | 654 | * @retval None |
| mbed_official | 52:a51c77007319 | 655 | */ |
| mbed_official | 52:a51c77007319 | 656 | void USART_SetGuardTime(USART_TypeDef* USARTx, uint8_t USART_GuardTime) |
| mbed_official | 52:a51c77007319 | 657 | { |
| mbed_official | 52:a51c77007319 | 658 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 659 | assert_param(IS_USART_123_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 660 | |
| mbed_official | 52:a51c77007319 | 661 | /* Clear the USART Guard time */ |
| mbed_official | 52:a51c77007319 | 662 | USARTx->GTPR &= GTPR_LSB_Mask; |
| mbed_official | 52:a51c77007319 | 663 | /* Set the USART guard time */ |
| mbed_official | 52:a51c77007319 | 664 | USARTx->GTPR |= (uint16_t)((uint16_t)USART_GuardTime << 0x08); |
| mbed_official | 52:a51c77007319 | 665 | } |
| mbed_official | 52:a51c77007319 | 666 | |
| mbed_official | 52:a51c77007319 | 667 | /** |
| mbed_official | 52:a51c77007319 | 668 | * @brief Sets the system clock prescaler. |
| mbed_official | 52:a51c77007319 | 669 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 670 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 671 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 672 | * @param USART_Prescaler: specifies the prescaler clock. |
| mbed_official | 52:a51c77007319 | 673 | * @note The function is used for IrDA mode with UART4 and UART5. |
| mbed_official | 52:a51c77007319 | 674 | * @retval None |
| mbed_official | 52:a51c77007319 | 675 | */ |
| mbed_official | 52:a51c77007319 | 676 | void USART_SetPrescaler(USART_TypeDef* USARTx, uint8_t USART_Prescaler) |
| mbed_official | 52:a51c77007319 | 677 | { |
| mbed_official | 52:a51c77007319 | 678 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 679 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 680 | |
| mbed_official | 52:a51c77007319 | 681 | /* Clear the USART prescaler */ |
| mbed_official | 52:a51c77007319 | 682 | USARTx->GTPR &= GTPR_MSB_Mask; |
| mbed_official | 52:a51c77007319 | 683 | /* Set the USART prescaler */ |
| mbed_official | 52:a51c77007319 | 684 | USARTx->GTPR |= USART_Prescaler; |
| mbed_official | 52:a51c77007319 | 685 | } |
| mbed_official | 52:a51c77007319 | 686 | |
| mbed_official | 52:a51c77007319 | 687 | /** |
| mbed_official | 52:a51c77007319 | 688 | * @brief Enables or disables the USARTs Smart Card mode. |
| mbed_official | 52:a51c77007319 | 689 | * @param USARTx: where x can be 1, 2 or 3 to select the USART peripheral. |
| mbed_official | 52:a51c77007319 | 690 | * @param NewState: new state of the Smart Card mode. |
| mbed_official | 52:a51c77007319 | 691 | * This parameter can be: ENABLE or DISABLE. |
| mbed_official | 52:a51c77007319 | 692 | * @note The Smart Card mode is not available for UART4 and UART5. |
| mbed_official | 52:a51c77007319 | 693 | * @retval None |
| mbed_official | 52:a51c77007319 | 694 | */ |
| mbed_official | 52:a51c77007319 | 695 | void USART_SmartCardCmd(USART_TypeDef* USARTx, FunctionalState NewState) |
| mbed_official | 52:a51c77007319 | 696 | { |
| mbed_official | 52:a51c77007319 | 697 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 698 | assert_param(IS_USART_123_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 699 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| mbed_official | 52:a51c77007319 | 700 | if (NewState != DISABLE) |
| mbed_official | 52:a51c77007319 | 701 | { |
| mbed_official | 52:a51c77007319 | 702 | /* Enable the SC mode by setting the SCEN bit in the CR3 register */ |
| mbed_official | 52:a51c77007319 | 703 | USARTx->CR3 |= CR3_SCEN_Set; |
| mbed_official | 52:a51c77007319 | 704 | } |
| mbed_official | 52:a51c77007319 | 705 | else |
| mbed_official | 52:a51c77007319 | 706 | { |
| mbed_official | 52:a51c77007319 | 707 | /* Disable the SC mode by clearing the SCEN bit in the CR3 register */ |
| mbed_official | 52:a51c77007319 | 708 | USARTx->CR3 &= CR3_SCEN_Reset; |
| mbed_official | 52:a51c77007319 | 709 | } |
| mbed_official | 52:a51c77007319 | 710 | } |
| mbed_official | 52:a51c77007319 | 711 | |
| mbed_official | 52:a51c77007319 | 712 | /** |
| mbed_official | 52:a51c77007319 | 713 | * @brief Enables or disables NACK transmission. |
| mbed_official | 52:a51c77007319 | 714 | * @param USARTx: where x can be 1, 2 or 3 to select the USART peripheral. |
| mbed_official | 52:a51c77007319 | 715 | * @param NewState: new state of the NACK transmission. |
| mbed_official | 52:a51c77007319 | 716 | * This parameter can be: ENABLE or DISABLE. |
| mbed_official | 52:a51c77007319 | 717 | * @note The Smart Card mode is not available for UART4 and UART5. |
| mbed_official | 52:a51c77007319 | 718 | * @retval None |
| mbed_official | 52:a51c77007319 | 719 | */ |
| mbed_official | 52:a51c77007319 | 720 | void USART_SmartCardNACKCmd(USART_TypeDef* USARTx, FunctionalState NewState) |
| mbed_official | 52:a51c77007319 | 721 | { |
| mbed_official | 52:a51c77007319 | 722 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 723 | assert_param(IS_USART_123_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 724 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| mbed_official | 52:a51c77007319 | 725 | if (NewState != DISABLE) |
| mbed_official | 52:a51c77007319 | 726 | { |
| mbed_official | 52:a51c77007319 | 727 | /* Enable the NACK transmission by setting the NACK bit in the CR3 register */ |
| mbed_official | 52:a51c77007319 | 728 | USARTx->CR3 |= CR3_NACK_Set; |
| mbed_official | 52:a51c77007319 | 729 | } |
| mbed_official | 52:a51c77007319 | 730 | else |
| mbed_official | 52:a51c77007319 | 731 | { |
| mbed_official | 52:a51c77007319 | 732 | /* Disable the NACK transmission by clearing the NACK bit in the CR3 register */ |
| mbed_official | 52:a51c77007319 | 733 | USARTx->CR3 &= CR3_NACK_Reset; |
| mbed_official | 52:a51c77007319 | 734 | } |
| mbed_official | 52:a51c77007319 | 735 | } |
| mbed_official | 52:a51c77007319 | 736 | |
| mbed_official | 52:a51c77007319 | 737 | /** |
| mbed_official | 52:a51c77007319 | 738 | * @brief Enables or disables the USARTs Half Duplex communication. |
| mbed_official | 52:a51c77007319 | 739 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 740 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 741 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 742 | * @param NewState: new state of the USART Communication. |
| mbed_official | 52:a51c77007319 | 743 | * This parameter can be: ENABLE or DISABLE. |
| mbed_official | 52:a51c77007319 | 744 | * @retval None |
| mbed_official | 52:a51c77007319 | 745 | */ |
| mbed_official | 52:a51c77007319 | 746 | void USART_HalfDuplexCmd(USART_TypeDef* USARTx, FunctionalState NewState) |
| mbed_official | 52:a51c77007319 | 747 | { |
| mbed_official | 52:a51c77007319 | 748 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 749 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 750 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| mbed_official | 52:a51c77007319 | 751 | |
| mbed_official | 52:a51c77007319 | 752 | if (NewState != DISABLE) |
| mbed_official | 52:a51c77007319 | 753 | { |
| mbed_official | 52:a51c77007319 | 754 | /* Enable the Half-Duplex mode by setting the HDSEL bit in the CR3 register */ |
| mbed_official | 52:a51c77007319 | 755 | USARTx->CR3 |= CR3_HDSEL_Set; |
| mbed_official | 52:a51c77007319 | 756 | } |
| mbed_official | 52:a51c77007319 | 757 | else |
| mbed_official | 52:a51c77007319 | 758 | { |
| mbed_official | 52:a51c77007319 | 759 | /* Disable the Half-Duplex mode by clearing the HDSEL bit in the CR3 register */ |
| mbed_official | 52:a51c77007319 | 760 | USARTx->CR3 &= CR3_HDSEL_Reset; |
| mbed_official | 52:a51c77007319 | 761 | } |
| mbed_official | 52:a51c77007319 | 762 | } |
| mbed_official | 52:a51c77007319 | 763 | |
| mbed_official | 52:a51c77007319 | 764 | |
| mbed_official | 52:a51c77007319 | 765 | /** |
| mbed_official | 52:a51c77007319 | 766 | * @brief Enables or disables the USART's 8x oversampling mode. |
| mbed_official | 52:a51c77007319 | 767 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 768 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 769 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 770 | * @param NewState: new state of the USART one bit sampling method. |
| mbed_official | 52:a51c77007319 | 771 | * This parameter can be: ENABLE or DISABLE. |
| mbed_official | 52:a51c77007319 | 772 | * @note |
| mbed_official | 52:a51c77007319 | 773 | * This function has to be called before calling USART_Init() |
| mbed_official | 52:a51c77007319 | 774 | * function in order to have correct baudrate Divider value. |
| mbed_official | 52:a51c77007319 | 775 | * @retval None |
| mbed_official | 52:a51c77007319 | 776 | */ |
| mbed_official | 52:a51c77007319 | 777 | void USART_OverSampling8Cmd(USART_TypeDef* USARTx, FunctionalState NewState) |
| mbed_official | 52:a51c77007319 | 778 | { |
| mbed_official | 52:a51c77007319 | 779 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 780 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 781 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| mbed_official | 52:a51c77007319 | 782 | |
| mbed_official | 52:a51c77007319 | 783 | if (NewState != DISABLE) |
| mbed_official | 52:a51c77007319 | 784 | { |
| mbed_official | 52:a51c77007319 | 785 | /* Enable the 8x Oversampling mode by setting the OVER8 bit in the CR1 register */ |
| mbed_official | 52:a51c77007319 | 786 | USARTx->CR1 |= CR1_OVER8_Set; |
| mbed_official | 52:a51c77007319 | 787 | } |
| mbed_official | 52:a51c77007319 | 788 | else |
| mbed_official | 52:a51c77007319 | 789 | { |
| mbed_official | 52:a51c77007319 | 790 | /* Disable the 8x Oversampling mode by clearing the OVER8 bit in the CR1 register */ |
| mbed_official | 52:a51c77007319 | 791 | USARTx->CR1 &= CR1_OVER8_Reset; |
| mbed_official | 52:a51c77007319 | 792 | } |
| mbed_official | 52:a51c77007319 | 793 | } |
| mbed_official | 52:a51c77007319 | 794 | |
| mbed_official | 52:a51c77007319 | 795 | /** |
| mbed_official | 52:a51c77007319 | 796 | * @brief Enables or disables the USART's one bit sampling method. |
| mbed_official | 52:a51c77007319 | 797 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 798 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 799 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 800 | * @param NewState: new state of the USART one bit sampling method. |
| mbed_official | 52:a51c77007319 | 801 | * This parameter can be: ENABLE or DISABLE. |
| mbed_official | 52:a51c77007319 | 802 | * @retval None |
| mbed_official | 52:a51c77007319 | 803 | */ |
| mbed_official | 52:a51c77007319 | 804 | void USART_OneBitMethodCmd(USART_TypeDef* USARTx, FunctionalState NewState) |
| mbed_official | 52:a51c77007319 | 805 | { |
| mbed_official | 52:a51c77007319 | 806 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 807 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 808 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| mbed_official | 52:a51c77007319 | 809 | |
| mbed_official | 52:a51c77007319 | 810 | if (NewState != DISABLE) |
| mbed_official | 52:a51c77007319 | 811 | { |
| mbed_official | 52:a51c77007319 | 812 | /* Enable the one bit method by setting the ONEBITE bit in the CR3 register */ |
| mbed_official | 52:a51c77007319 | 813 | USARTx->CR3 |= CR3_ONEBITE_Set; |
| mbed_official | 52:a51c77007319 | 814 | } |
| mbed_official | 52:a51c77007319 | 815 | else |
| mbed_official | 52:a51c77007319 | 816 | { |
| mbed_official | 52:a51c77007319 | 817 | /* Disable tthe one bit method by clearing the ONEBITE bit in the CR3 register */ |
| mbed_official | 52:a51c77007319 | 818 | USARTx->CR3 &= CR3_ONEBITE_Reset; |
| mbed_official | 52:a51c77007319 | 819 | } |
| mbed_official | 52:a51c77007319 | 820 | } |
| mbed_official | 52:a51c77007319 | 821 | |
| mbed_official | 52:a51c77007319 | 822 | /** |
| mbed_official | 52:a51c77007319 | 823 | * @brief Configures the USART's IrDA interface. |
| mbed_official | 52:a51c77007319 | 824 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 825 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 826 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 827 | * @param USART_IrDAMode: specifies the IrDA mode. |
| mbed_official | 52:a51c77007319 | 828 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 829 | * @arg USART_IrDAMode_LowPower |
| mbed_official | 52:a51c77007319 | 830 | * @arg USART_IrDAMode_Normal |
| mbed_official | 52:a51c77007319 | 831 | * @retval None |
| mbed_official | 52:a51c77007319 | 832 | */ |
| mbed_official | 52:a51c77007319 | 833 | void USART_IrDAConfig(USART_TypeDef* USARTx, uint16_t USART_IrDAMode) |
| mbed_official | 52:a51c77007319 | 834 | { |
| mbed_official | 52:a51c77007319 | 835 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 836 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 837 | assert_param(IS_USART_IRDA_MODE(USART_IrDAMode)); |
| mbed_official | 52:a51c77007319 | 838 | |
| mbed_official | 52:a51c77007319 | 839 | USARTx->CR3 &= CR3_IRLP_Mask; |
| mbed_official | 52:a51c77007319 | 840 | USARTx->CR3 |= USART_IrDAMode; |
| mbed_official | 52:a51c77007319 | 841 | } |
| mbed_official | 52:a51c77007319 | 842 | |
| mbed_official | 52:a51c77007319 | 843 | /** |
| mbed_official | 52:a51c77007319 | 844 | * @brief Enables or disables the USART's IrDA interface. |
| mbed_official | 52:a51c77007319 | 845 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 846 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 847 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 848 | * @param NewState: new state of the IrDA mode. |
| mbed_official | 52:a51c77007319 | 849 | * This parameter can be: ENABLE or DISABLE. |
| mbed_official | 52:a51c77007319 | 850 | * @retval None |
| mbed_official | 52:a51c77007319 | 851 | */ |
| mbed_official | 52:a51c77007319 | 852 | void USART_IrDACmd(USART_TypeDef* USARTx, FunctionalState NewState) |
| mbed_official | 52:a51c77007319 | 853 | { |
| mbed_official | 52:a51c77007319 | 854 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 855 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 856 | assert_param(IS_FUNCTIONAL_STATE(NewState)); |
| mbed_official | 52:a51c77007319 | 857 | |
| mbed_official | 52:a51c77007319 | 858 | if (NewState != DISABLE) |
| mbed_official | 52:a51c77007319 | 859 | { |
| mbed_official | 52:a51c77007319 | 860 | /* Enable the IrDA mode by setting the IREN bit in the CR3 register */ |
| mbed_official | 52:a51c77007319 | 861 | USARTx->CR3 |= CR3_IREN_Set; |
| mbed_official | 52:a51c77007319 | 862 | } |
| mbed_official | 52:a51c77007319 | 863 | else |
| mbed_official | 52:a51c77007319 | 864 | { |
| mbed_official | 52:a51c77007319 | 865 | /* Disable the IrDA mode by clearing the IREN bit in the CR3 register */ |
| mbed_official | 52:a51c77007319 | 866 | USARTx->CR3 &= CR3_IREN_Reset; |
| mbed_official | 52:a51c77007319 | 867 | } |
| mbed_official | 52:a51c77007319 | 868 | } |
| mbed_official | 52:a51c77007319 | 869 | |
| mbed_official | 52:a51c77007319 | 870 | /** |
| mbed_official | 52:a51c77007319 | 871 | * @brief Checks whether the specified USART flag is set or not. |
| mbed_official | 52:a51c77007319 | 872 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 873 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 874 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 875 | * @param USART_FLAG: specifies the flag to check. |
| mbed_official | 52:a51c77007319 | 876 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 877 | * @arg USART_FLAG_CTS: CTS Change flag (not available for UART4 and UART5) |
| mbed_official | 52:a51c77007319 | 878 | * @arg USART_FLAG_LBD: LIN Break detection flag |
| mbed_official | 52:a51c77007319 | 879 | * @arg USART_FLAG_TXE: Transmit data register empty flag |
| mbed_official | 52:a51c77007319 | 880 | * @arg USART_FLAG_TC: Transmission Complete flag |
| mbed_official | 52:a51c77007319 | 881 | * @arg USART_FLAG_RXNE: Receive data register not empty flag |
| mbed_official | 52:a51c77007319 | 882 | * @arg USART_FLAG_IDLE: Idle Line detection flag |
| mbed_official | 52:a51c77007319 | 883 | * @arg USART_FLAG_ORE: OverRun Error flag |
| mbed_official | 52:a51c77007319 | 884 | * @arg USART_FLAG_NE: Noise Error flag |
| mbed_official | 52:a51c77007319 | 885 | * @arg USART_FLAG_FE: Framing Error flag |
| mbed_official | 52:a51c77007319 | 886 | * @arg USART_FLAG_PE: Parity Error flag |
| mbed_official | 52:a51c77007319 | 887 | * @retval The new state of USART_FLAG (SET or RESET). |
| mbed_official | 52:a51c77007319 | 888 | */ |
| mbed_official | 52:a51c77007319 | 889 | FlagStatus USART_GetFlagStatus(USART_TypeDef* USARTx, uint16_t USART_FLAG) |
| mbed_official | 52:a51c77007319 | 890 | { |
| mbed_official | 52:a51c77007319 | 891 | FlagStatus bitstatus = RESET; |
| mbed_official | 52:a51c77007319 | 892 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 893 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 894 | assert_param(IS_USART_FLAG(USART_FLAG)); |
| mbed_official | 52:a51c77007319 | 895 | /* The CTS flag is not available for UART4 and UART5 */ |
| mbed_official | 52:a51c77007319 | 896 | if (USART_FLAG == USART_FLAG_CTS) |
| mbed_official | 52:a51c77007319 | 897 | { |
| mbed_official | 52:a51c77007319 | 898 | assert_param(IS_USART_123_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 899 | } |
| mbed_official | 52:a51c77007319 | 900 | |
| mbed_official | 52:a51c77007319 | 901 | if ((USARTx->SR & USART_FLAG) != (uint16_t)RESET) |
| mbed_official | 52:a51c77007319 | 902 | { |
| mbed_official | 52:a51c77007319 | 903 | bitstatus = SET; |
| mbed_official | 52:a51c77007319 | 904 | } |
| mbed_official | 52:a51c77007319 | 905 | else |
| mbed_official | 52:a51c77007319 | 906 | { |
| mbed_official | 52:a51c77007319 | 907 | bitstatus = RESET; |
| mbed_official | 52:a51c77007319 | 908 | } |
| mbed_official | 52:a51c77007319 | 909 | return bitstatus; |
| mbed_official | 52:a51c77007319 | 910 | } |
| mbed_official | 52:a51c77007319 | 911 | |
| mbed_official | 52:a51c77007319 | 912 | /** |
| mbed_official | 52:a51c77007319 | 913 | * @brief Clears the USARTx's pending flags. |
| mbed_official | 52:a51c77007319 | 914 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 915 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 916 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 917 | * @param USART_FLAG: specifies the flag to clear. |
| mbed_official | 52:a51c77007319 | 918 | * This parameter can be any combination of the following values: |
| mbed_official | 52:a51c77007319 | 919 | * @arg USART_FLAG_CTS: CTS Change flag (not available for UART4 and UART5). |
| mbed_official | 52:a51c77007319 | 920 | * @arg USART_FLAG_LBD: LIN Break detection flag. |
| mbed_official | 52:a51c77007319 | 921 | * @arg USART_FLAG_TC: Transmission Complete flag. |
| mbed_official | 52:a51c77007319 | 922 | * @arg USART_FLAG_RXNE: Receive data register not empty flag. |
| mbed_official | 52:a51c77007319 | 923 | * |
| mbed_official | 52:a51c77007319 | 924 | * @note |
| mbed_official | 52:a51c77007319 | 925 | * - PE (Parity error), FE (Framing error), NE (Noise error), ORE (OverRun |
| mbed_official | 52:a51c77007319 | 926 | * error) and IDLE (Idle line detected) flags are cleared by software |
| mbed_official | 52:a51c77007319 | 927 | * sequence: a read operation to USART_SR register (USART_GetFlagStatus()) |
| mbed_official | 52:a51c77007319 | 928 | * followed by a read operation to USART_DR register (USART_ReceiveData()). |
| mbed_official | 52:a51c77007319 | 929 | * - RXNE flag can be also cleared by a read to the USART_DR register |
| mbed_official | 52:a51c77007319 | 930 | * (USART_ReceiveData()). |
| mbed_official | 52:a51c77007319 | 931 | * - TC flag can be also cleared by software sequence: a read operation to |
| mbed_official | 52:a51c77007319 | 932 | * USART_SR register (USART_GetFlagStatus()) followed by a write operation |
| mbed_official | 52:a51c77007319 | 933 | * to USART_DR register (USART_SendData()). |
| mbed_official | 52:a51c77007319 | 934 | * - TXE flag is cleared only by a write to the USART_DR register |
| mbed_official | 52:a51c77007319 | 935 | * (USART_SendData()). |
| mbed_official | 52:a51c77007319 | 936 | * @retval None |
| mbed_official | 52:a51c77007319 | 937 | */ |
| mbed_official | 52:a51c77007319 | 938 | void USART_ClearFlag(USART_TypeDef* USARTx, uint16_t USART_FLAG) |
| mbed_official | 52:a51c77007319 | 939 | { |
| mbed_official | 52:a51c77007319 | 940 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 941 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 942 | assert_param(IS_USART_CLEAR_FLAG(USART_FLAG)); |
| mbed_official | 52:a51c77007319 | 943 | /* The CTS flag is not available for UART4 and UART5 */ |
| mbed_official | 52:a51c77007319 | 944 | if ((USART_FLAG & USART_FLAG_CTS) == USART_FLAG_CTS) |
| mbed_official | 52:a51c77007319 | 945 | { |
| mbed_official | 52:a51c77007319 | 946 | assert_param(IS_USART_123_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 947 | } |
| mbed_official | 52:a51c77007319 | 948 | |
| mbed_official | 52:a51c77007319 | 949 | USARTx->SR = (uint16_t)~USART_FLAG; |
| mbed_official | 52:a51c77007319 | 950 | } |
| mbed_official | 52:a51c77007319 | 951 | |
| mbed_official | 52:a51c77007319 | 952 | /** |
| mbed_official | 52:a51c77007319 | 953 | * @brief Checks whether the specified USART interrupt has occurred or not. |
| mbed_official | 52:a51c77007319 | 954 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 955 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 956 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 957 | * @param USART_IT: specifies the USART interrupt source to check. |
| mbed_official | 52:a51c77007319 | 958 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 959 | * @arg USART_IT_CTS: CTS change interrupt (not available for UART4 and UART5) |
| mbed_official | 52:a51c77007319 | 960 | * @arg USART_IT_LBD: LIN Break detection interrupt |
| mbed_official | 52:a51c77007319 | 961 | * @arg USART_IT_TXE: Tansmit Data Register empty interrupt |
| mbed_official | 52:a51c77007319 | 962 | * @arg USART_IT_TC: Transmission complete interrupt |
| mbed_official | 52:a51c77007319 | 963 | * @arg USART_IT_RXNE: Receive Data register not empty interrupt |
| mbed_official | 52:a51c77007319 | 964 | * @arg USART_IT_IDLE: Idle line detection interrupt |
| mbed_official | 52:a51c77007319 | 965 | * @arg USART_IT_ORE: OverRun Error interrupt |
| mbed_official | 52:a51c77007319 | 966 | * @arg USART_IT_NE: Noise Error interrupt |
| mbed_official | 52:a51c77007319 | 967 | * @arg USART_IT_FE: Framing Error interrupt |
| mbed_official | 52:a51c77007319 | 968 | * @arg USART_IT_PE: Parity Error interrupt |
| mbed_official | 52:a51c77007319 | 969 | * @retval The new state of USART_IT (SET or RESET). |
| mbed_official | 52:a51c77007319 | 970 | */ |
| mbed_official | 52:a51c77007319 | 971 | ITStatus USART_GetITStatus(USART_TypeDef* USARTx, uint16_t USART_IT) |
| mbed_official | 52:a51c77007319 | 972 | { |
| mbed_official | 52:a51c77007319 | 973 | uint32_t bitpos = 0x00, itmask = 0x00, usartreg = 0x00; |
| mbed_official | 52:a51c77007319 | 974 | ITStatus bitstatus = RESET; |
| mbed_official | 52:a51c77007319 | 975 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 976 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 977 | assert_param(IS_USART_GET_IT(USART_IT)); |
| mbed_official | 52:a51c77007319 | 978 | /* The CTS interrupt is not available for UART4 and UART5 */ |
| mbed_official | 52:a51c77007319 | 979 | if (USART_IT == USART_IT_CTS) |
| mbed_official | 52:a51c77007319 | 980 | { |
| mbed_official | 52:a51c77007319 | 981 | assert_param(IS_USART_123_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 982 | } |
| mbed_official | 52:a51c77007319 | 983 | |
| mbed_official | 52:a51c77007319 | 984 | /* Get the USART register index */ |
| mbed_official | 52:a51c77007319 | 985 | usartreg = (((uint8_t)USART_IT) >> 0x05); |
| mbed_official | 52:a51c77007319 | 986 | /* Get the interrupt position */ |
| mbed_official | 52:a51c77007319 | 987 | itmask = USART_IT & IT_Mask; |
| mbed_official | 52:a51c77007319 | 988 | itmask = (uint32_t)0x01 << itmask; |
| mbed_official | 52:a51c77007319 | 989 | |
| mbed_official | 52:a51c77007319 | 990 | if (usartreg == 0x01) /* The IT is in CR1 register */ |
| mbed_official | 52:a51c77007319 | 991 | { |
| mbed_official | 52:a51c77007319 | 992 | itmask &= USARTx->CR1; |
| mbed_official | 52:a51c77007319 | 993 | } |
| mbed_official | 52:a51c77007319 | 994 | else if (usartreg == 0x02) /* The IT is in CR2 register */ |
| mbed_official | 52:a51c77007319 | 995 | { |
| mbed_official | 52:a51c77007319 | 996 | itmask &= USARTx->CR2; |
| mbed_official | 52:a51c77007319 | 997 | } |
| mbed_official | 52:a51c77007319 | 998 | else /* The IT is in CR3 register */ |
| mbed_official | 52:a51c77007319 | 999 | { |
| mbed_official | 52:a51c77007319 | 1000 | itmask &= USARTx->CR3; |
| mbed_official | 52:a51c77007319 | 1001 | } |
| mbed_official | 52:a51c77007319 | 1002 | |
| mbed_official | 52:a51c77007319 | 1003 | bitpos = USART_IT >> 0x08; |
| mbed_official | 52:a51c77007319 | 1004 | bitpos = (uint32_t)0x01 << bitpos; |
| mbed_official | 52:a51c77007319 | 1005 | bitpos &= USARTx->SR; |
| mbed_official | 52:a51c77007319 | 1006 | if ((itmask != (uint16_t)RESET)&&(bitpos != (uint16_t)RESET)) |
| mbed_official | 52:a51c77007319 | 1007 | { |
| mbed_official | 52:a51c77007319 | 1008 | bitstatus = SET; |
| mbed_official | 52:a51c77007319 | 1009 | } |
| mbed_official | 52:a51c77007319 | 1010 | else |
| mbed_official | 52:a51c77007319 | 1011 | { |
| mbed_official | 52:a51c77007319 | 1012 | bitstatus = RESET; |
| mbed_official | 52:a51c77007319 | 1013 | } |
| mbed_official | 52:a51c77007319 | 1014 | |
| mbed_official | 52:a51c77007319 | 1015 | return bitstatus; |
| mbed_official | 52:a51c77007319 | 1016 | } |
| mbed_official | 52:a51c77007319 | 1017 | |
| mbed_official | 52:a51c77007319 | 1018 | /** |
| mbed_official | 52:a51c77007319 | 1019 | * @brief Clears the USARTx's interrupt pending bits. |
| mbed_official | 52:a51c77007319 | 1020 | * @param USARTx: Select the USART or the UART peripheral. |
| mbed_official | 52:a51c77007319 | 1021 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 1022 | * USART1, USART2, USART3, UART4 or UART5. |
| mbed_official | 52:a51c77007319 | 1023 | * @param USART_IT: specifies the interrupt pending bit to clear. |
| mbed_official | 52:a51c77007319 | 1024 | * This parameter can be one of the following values: |
| mbed_official | 52:a51c77007319 | 1025 | * @arg USART_IT_CTS: CTS change interrupt (not available for UART4 and UART5) |
| mbed_official | 52:a51c77007319 | 1026 | * @arg USART_IT_LBD: LIN Break detection interrupt |
| mbed_official | 52:a51c77007319 | 1027 | * @arg USART_IT_TC: Transmission complete interrupt. |
| mbed_official | 52:a51c77007319 | 1028 | * @arg USART_IT_RXNE: Receive Data register not empty interrupt. |
| mbed_official | 52:a51c77007319 | 1029 | * |
| mbed_official | 52:a51c77007319 | 1030 | * @note |
| mbed_official | 52:a51c77007319 | 1031 | * - PE (Parity error), FE (Framing error), NE (Noise error), ORE (OverRun |
| mbed_official | 52:a51c77007319 | 1032 | * error) and IDLE (Idle line detected) pending bits are cleared by |
| mbed_official | 52:a51c77007319 | 1033 | * software sequence: a read operation to USART_SR register |
| mbed_official | 52:a51c77007319 | 1034 | * (USART_GetITStatus()) followed by a read operation to USART_DR register |
| mbed_official | 52:a51c77007319 | 1035 | * (USART_ReceiveData()). |
| mbed_official | 52:a51c77007319 | 1036 | * - RXNE pending bit can be also cleared by a read to the USART_DR register |
| mbed_official | 52:a51c77007319 | 1037 | * (USART_ReceiveData()). |
| mbed_official | 52:a51c77007319 | 1038 | * - TC pending bit can be also cleared by software sequence: a read |
| mbed_official | 52:a51c77007319 | 1039 | * operation to USART_SR register (USART_GetITStatus()) followed by a write |
| mbed_official | 52:a51c77007319 | 1040 | * operation to USART_DR register (USART_SendData()). |
| mbed_official | 52:a51c77007319 | 1041 | * - TXE pending bit is cleared only by a write to the USART_DR register |
| mbed_official | 52:a51c77007319 | 1042 | * (USART_SendData()). |
| mbed_official | 52:a51c77007319 | 1043 | * @retval None |
| mbed_official | 52:a51c77007319 | 1044 | */ |
| mbed_official | 52:a51c77007319 | 1045 | void USART_ClearITPendingBit(USART_TypeDef* USARTx, uint16_t USART_IT) |
| mbed_official | 52:a51c77007319 | 1046 | { |
| mbed_official | 52:a51c77007319 | 1047 | uint16_t bitpos = 0x00, itmask = 0x00; |
| mbed_official | 52:a51c77007319 | 1048 | /* Check the parameters */ |
| mbed_official | 52:a51c77007319 | 1049 | assert_param(IS_USART_ALL_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 1050 | assert_param(IS_USART_CLEAR_IT(USART_IT)); |
| mbed_official | 52:a51c77007319 | 1051 | /* The CTS interrupt is not available for UART4 and UART5 */ |
| mbed_official | 52:a51c77007319 | 1052 | if (USART_IT == USART_IT_CTS) |
| mbed_official | 52:a51c77007319 | 1053 | { |
| mbed_official | 52:a51c77007319 | 1054 | assert_param(IS_USART_123_PERIPH(USARTx)); |
| mbed_official | 52:a51c77007319 | 1055 | } |
| mbed_official | 52:a51c77007319 | 1056 | |
| mbed_official | 52:a51c77007319 | 1057 | bitpos = USART_IT >> 0x08; |
| mbed_official | 52:a51c77007319 | 1058 | itmask = ((uint16_t)0x01 << (uint16_t)bitpos); |
| mbed_official | 52:a51c77007319 | 1059 | USARTx->SR = (uint16_t)~itmask; |
| mbed_official | 52:a51c77007319 | 1060 | } |
| mbed_official | 52:a51c77007319 | 1061 | /** |
| mbed_official | 52:a51c77007319 | 1062 | * @} |
| mbed_official | 52:a51c77007319 | 1063 | */ |
| mbed_official | 52:a51c77007319 | 1064 | |
| mbed_official | 52:a51c77007319 | 1065 | /** |
| mbed_official | 52:a51c77007319 | 1066 | * @} |
| mbed_official | 52:a51c77007319 | 1067 | */ |
| mbed_official | 52:a51c77007319 | 1068 | |
| mbed_official | 52:a51c77007319 | 1069 | /** |
| mbed_official | 52:a51c77007319 | 1070 | * @} |
| mbed_official | 52:a51c77007319 | 1071 | */ |
| mbed_official | 52:a51c77007319 | 1072 | |
| mbed_official | 52:a51c77007319 | 1073 | /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |