Sigve Sebastian Farstad / mbed-src

mbed w/ spi bug fig

Dependents:   display-puck

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F030R8/serial_api.c@242:7074e42da0b2, 2014-06-27 (annotated)

Committer:
mbed_official
Date:
Fri Jun 27 07:30:09 2014 +0100
Revision:
242:7074e42da0b2
Parent:
227:7bd0639b8911 
Synchronized with git revision 124ef5e3add9e74a3221347a3fbeea7c8b3cf353



Full URL: https://github.com/mbedmicro/mbed/commit/124ef5e3add9e74a3221347a3fbeea7c8b3cf353/



[DISCO_F407VG] HAL update.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 76:aeb1df146756 1 /* mbed Microcontroller Library
mbed_official 76:aeb1df146756 2 *******************************************************************************
mbed_official 76:aeb1df146756 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 76:aeb1df146756 4 * All rights reserved.
mbed_official 76:aeb1df146756 5 *
mbed_official 76:aeb1df146756 6 * Redistribution and use in source and binary forms, with or without
mbed_official 76:aeb1df146756 7 * modification, are permitted provided that the following conditions are met:
mbed_official 76:aeb1df146756 8 *
mbed_official 76:aeb1df146756 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 76:aeb1df146756 10 * this list of conditions and the following disclaimer.
mbed_official 76:aeb1df146756 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 76:aeb1df146756 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 76:aeb1df146756 13 * and/or other materials provided with the distribution.
mbed_official 76:aeb1df146756 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 76:aeb1df146756 15 * may be used to endorse or promote products derived from this software
mbed_official 76:aeb1df146756 16 * without specific prior written permission.
mbed_official 76:aeb1df146756 17 *
mbed_official 76:aeb1df146756 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 76:aeb1df146756 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 76:aeb1df146756 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 76:aeb1df146756 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 76:aeb1df146756 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 76:aeb1df146756 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 76:aeb1df146756 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 76:aeb1df146756 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 76:aeb1df146756 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 76:aeb1df146756 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 76:aeb1df146756 28 *******************************************************************************
mbed_official 76:aeb1df146756 29 */
mbed_official 227:7bd0639b8911 30 #include "mbed_assert.h"
mbed_official 76:aeb1df146756 31 #include "serial_api.h"
mbed_official 166:cb4253f91ada 32
mbed_official 166:cb4253f91ada 33 #if DEVICE_SERIAL
mbed_official 166:cb4253f91ada 34
mbed_official 76:aeb1df146756 35 #include "cmsis.h"
mbed_official 76:aeb1df146756 36 #include "pinmap.h"
mbed_official 76:aeb1df146756 37 #include <string.h>
mbed_official 76:aeb1df146756 38
mbed_official 76:aeb1df146756 39 static const PinMap PinMap_UART_TX[] = {
mbed_official 164:90c6009cba07 40 {PA_2, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)},
mbed_official 76:aeb1df146756 41 {PA_9, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)},
mbed_official 164:90c6009cba07 42 {PB_6, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_0)},
mbed_official 76:aeb1df146756 43 {NC, NC, 0}
mbed_official 76:aeb1df146756 44 };
mbed_official 76:aeb1df146756 45
mbed_official 76:aeb1df146756 46 static const PinMap PinMap_UART_RX[] = {
mbed_official 216:577900467c9e 47 {PA_3, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)},
mbed_official 76:aeb1df146756 48 {PA_10, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)},
mbed_official 164:90c6009cba07 49 {PA_15, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)},
mbed_official 164:90c6009cba07 50 {PB_7, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_0)},
mbed_official 76:aeb1df146756 51 {NC, NC, 0}
mbed_official 76:aeb1df146756 52 };
mbed_official 76:aeb1df146756 53
mbed_official 76:aeb1df146756 54 #define UART_NUM (2)
mbed_official 76:aeb1df146756 55
mbed_official 76:aeb1df146756 56 static uint32_t serial_irq_ids[UART_NUM] = {0};
mbed_official 76:aeb1df146756 57
mbed_official 76:aeb1df146756 58 static uart_irq_handler irq_handler;
mbed_official 76:aeb1df146756 59
mbed_official 76:aeb1df146756 60 int stdio_uart_inited = 0;
mbed_official 76:aeb1df146756 61 serial_t stdio_uart;
mbed_official 76:aeb1df146756 62
mbed_official 76:aeb1df146756 63 static void init_usart(serial_t *obj) {
mbed_official 76:aeb1df146756 64 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 65 USART_InitTypeDef USART_InitStructure;
mbed_official 216:577900467c9e 66
mbed_official 76:aeb1df146756 67 USART_Cmd(usart, DISABLE);
mbed_official 76:aeb1df146756 68
mbed_official 76:aeb1df146756 69 USART_InitStructure.USART_BaudRate = obj->baudrate;
mbed_official 76:aeb1df146756 70 USART_InitStructure.USART_WordLength = obj->databits;
mbed_official 76:aeb1df146756 71 USART_InitStructure.USART_StopBits = obj->stopbits;
mbed_official 76:aeb1df146756 72 USART_InitStructure.USART_Parity = obj->parity;
mbed_official 76:aeb1df146756 73 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
mbed_official 242:7074e42da0b2 74
mbed_official 242:7074e42da0b2 75 if (obj->pin_rx == NC) {
mbed_official 242:7074e42da0b2 76 USART_InitStructure.USART_Mode = USART_Mode_Tx;
mbed_official 242:7074e42da0b2 77 } else if (obj->pin_tx == NC) {
mbed_official 242:7074e42da0b2 78 USART_InitStructure.USART_Mode = USART_Mode_Rx;
mbed_official 242:7074e42da0b2 79 } else {
mbed_official 242:7074e42da0b2 80 USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
mbed_official 242:7074e42da0b2 81 }
mbed_official 242:7074e42da0b2 82
mbed_official 76:aeb1df146756 83 USART_Init(usart, &USART_InitStructure);
mbed_official 216:577900467c9e 84
mbed_official 76:aeb1df146756 85 USART_Cmd(usart, ENABLE);
mbed_official 76:aeb1df146756 86 }
mbed_official 76:aeb1df146756 87
mbed_official 216:577900467c9e 88 void serial_init(serial_t *obj, PinName tx, PinName rx) {
mbed_official 76:aeb1df146756 89 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 76:aeb1df146756 90 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 76:aeb1df146756 91 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 216:577900467c9e 92
mbed_official 76:aeb1df146756 93 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 76:aeb1df146756 94 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 227:7bd0639b8911 95 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 76:aeb1df146756 96
mbed_official 76:aeb1df146756 97 // Enable USART clock
mbed_official 76:aeb1df146756 98 if (obj->uart == UART_1) {
mbed_official 216:577900467c9e 99 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
mbed_official 216:577900467c9e 100 obj->index = 0;
mbed_official 76:aeb1df146756 101 }
mbed_official 76:aeb1df146756 102 if (obj->uart == UART_2) {
mbed_official 216:577900467c9e 103 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
mbed_official 216:577900467c9e 104 obj->index = 1;
mbed_official 76:aeb1df146756 105 }
mbed_official 216:577900467c9e 106
mbed_official 76:aeb1df146756 107 // Configure the UART pins
mbed_official 76:aeb1df146756 108 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 76:aeb1df146756 109 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 76:aeb1df146756 110 pin_mode(tx, PullUp);
mbed_official 76:aeb1df146756 111 pin_mode(rx, PullUp);
mbed_official 77:b5886236e6f0 112
mbed_official 76:aeb1df146756 113 // Configure UART
mbed_official 76:aeb1df146756 114 obj->baudrate = 9600;
mbed_official 76:aeb1df146756 115 obj->databits = USART_WordLength_8b;
mbed_official 76:aeb1df146756 116 obj->stopbits = USART_StopBits_1;
mbed_official 216:577900467c9e 117 obj->parity = USART_Parity_No;
mbed_official 216:577900467c9e 118
mbed_official 216:577900467c9e 119 obj->pin_tx = tx;
mbed_official 216:577900467c9e 120 obj->pin_rx = rx;
mbed_official 76:aeb1df146756 121
mbed_official 76:aeb1df146756 122 init_usart(obj);
mbed_official 76:aeb1df146756 123
mbed_official 76:aeb1df146756 124 // For stdio management
mbed_official 76:aeb1df146756 125 if (obj->uart == STDIO_UART) {
mbed_official 76:aeb1df146756 126 stdio_uart_inited = 1;
mbed_official 76:aeb1df146756 127 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 76:aeb1df146756 128 }
mbed_official 216:577900467c9e 129
mbed_official 76:aeb1df146756 130 }
mbed_official 76:aeb1df146756 131
mbed_official 76:aeb1df146756 132 void serial_free(serial_t *obj) {
mbed_official 216:577900467c9e 133 // Reset UART and disable clock
mbed_official 216:577900467c9e 134 if (obj->uart == UART_1) {
mbed_official 216:577900467c9e 135 RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, ENABLE);
mbed_official 216:577900467c9e 136 RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, DISABLE);
mbed_official 216:577900467c9e 137 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, DISABLE);
mbed_official 216:577900467c9e 138 }
mbed_official 216:577900467c9e 139 if (obj->uart == UART_2) {
mbed_official 216:577900467c9e 140 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, ENABLE);
mbed_official 216:577900467c9e 141 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, DISABLE);
mbed_official 216:577900467c9e 142 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, DISABLE);
mbed_official 216:577900467c9e 143 }
mbed_official 216:577900467c9e 144
mbed_official 216:577900467c9e 145 // Configure GPIOs
mbed_official 216:577900467c9e 146 pin_function(obj->pin_tx, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 216:577900467c9e 147 pin_function(obj->pin_rx, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 216:577900467c9e 148
mbed_official 76:aeb1df146756 149 serial_irq_ids[obj->index] = 0;
mbed_official 76:aeb1df146756 150 }
mbed_official 76:aeb1df146756 151
mbed_official 76:aeb1df146756 152 void serial_baud(serial_t *obj, int baudrate) {
mbed_official 76:aeb1df146756 153 obj->baudrate = baudrate;
mbed_official 76:aeb1df146756 154 init_usart(obj);
mbed_official 76:aeb1df146756 155 }
mbed_official 76:aeb1df146756 156
mbed_official 76:aeb1df146756 157 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
mbed_official 242:7074e42da0b2 158 if (data_bits == 9) {
mbed_official 242:7074e42da0b2 159 obj->databits = USART_WordLength_9b;
mbed_official 242:7074e42da0b2 160 } else {
mbed_official 76:aeb1df146756 161 obj->databits = USART_WordLength_8b;
mbed_official 76:aeb1df146756 162 }
mbed_official 76:aeb1df146756 163
mbed_official 76:aeb1df146756 164 switch (parity) {
mbed_official 216:577900467c9e 165 case ParityOdd:
mbed_official 216:577900467c9e 166 case ParityForced0:
mbed_official 216:577900467c9e 167 obj->parity = USART_Parity_Odd;
mbed_official 216:577900467c9e 168 break;
mbed_official 216:577900467c9e 169 case ParityEven:
mbed_official 216:577900467c9e 170 case ParityForced1:
mbed_official 216:577900467c9e 171 obj->parity = USART_Parity_Even;
mbed_official 216:577900467c9e 172 break;
mbed_official 216:577900467c9e 173 default: // ParityNone
mbed_official 216:577900467c9e 174 obj->parity = USART_Parity_No;
mbed_official 216:577900467c9e 175 break;
mbed_official 76:aeb1df146756 176 }
mbed_official 216:577900467c9e 177
mbed_official 76:aeb1df146756 178 if (stop_bits == 2) {
mbed_official 76:aeb1df146756 179 obj->stopbits = USART_StopBits_2;
mbed_official 216:577900467c9e 180 } else {
mbed_official 76:aeb1df146756 181 obj->stopbits = USART_StopBits_1;
mbed_official 76:aeb1df146756 182 }
mbed_official 76:aeb1df146756 183
mbed_official 76:aeb1df146756 184 init_usart(obj);
mbed_official 76:aeb1df146756 185 }
mbed_official 76:aeb1df146756 186
mbed_official 76:aeb1df146756 187 /******************************************************************************
mbed_official 76:aeb1df146756 188 * INTERRUPTS HANDLING
mbed_official 76:aeb1df146756 189 ******************************************************************************/
mbed_official 76:aeb1df146756 190
mbed_official 76:aeb1df146756 191 // not api
mbed_official 76:aeb1df146756 192 static void uart_irq(USART_TypeDef* usart, int id) {
mbed_official 76:aeb1df146756 193 if (serial_irq_ids[id] != 0) {
mbed_official 76:aeb1df146756 194 if (USART_GetITStatus(usart, USART_IT_TC) != RESET) {
mbed_official 76:aeb1df146756 195 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 76:aeb1df146756 196 USART_ClearITPendingBit(usart, USART_IT_TC);
mbed_official 76:aeb1df146756 197 }
mbed_official 76:aeb1df146756 198 if (USART_GetITStatus(usart, USART_IT_RXNE) != RESET) {
mbed_official 76:aeb1df146756 199 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 76:aeb1df146756 200 USART_ClearITPendingBit(usart, USART_IT_RXNE);
mbed_official 76:aeb1df146756 201 }
mbed_official 76:aeb1df146756 202 }
mbed_official 76:aeb1df146756 203 }
mbed_official 76:aeb1df146756 204
mbed_official 216:577900467c9e 205 static void uart1_irq(void) {
mbed_official 216:577900467c9e 206 uart_irq((USART_TypeDef*)UART_1, 0);
mbed_official 216:577900467c9e 207 }
mbed_official 216:577900467c9e 208 static void uart2_irq(void) {
mbed_official 216:577900467c9e 209 uart_irq((USART_TypeDef*)UART_2, 1);
mbed_official 216:577900467c9e 210 }
mbed_official 76:aeb1df146756 211
mbed_official 76:aeb1df146756 212 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
mbed_official 76:aeb1df146756 213 irq_handler = handler;
mbed_official 76:aeb1df146756 214 serial_irq_ids[obj->index] = id;
mbed_official 76:aeb1df146756 215 }
mbed_official 76:aeb1df146756 216
mbed_official 76:aeb1df146756 217 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
mbed_official 76:aeb1df146756 218 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 76:aeb1df146756 219 uint32_t vector = 0;
mbed_official 76:aeb1df146756 220 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 221
mbed_official 76:aeb1df146756 222 if (obj->uart == UART_1) {
mbed_official 216:577900467c9e 223 irq_n = USART1_IRQn;
mbed_official 216:577900467c9e 224 vector = (uint32_t)&uart1_irq;
mbed_official 76:aeb1df146756 225 }
mbed_official 216:577900467c9e 226
mbed_official 76:aeb1df146756 227 if (obj->uart == UART_2) {
mbed_official 216:577900467c9e 228 irq_n = USART2_IRQn;
mbed_official 216:577900467c9e 229 vector = (uint32_t)&uart2_irq;
mbed_official 76:aeb1df146756 230 }
mbed_official 216:577900467c9e 231
mbed_official 76:aeb1df146756 232 if (enable) {
mbed_official 216:577900467c9e 233
mbed_official 76:aeb1df146756 234 if (irq == RxIrq) {
mbed_official 76:aeb1df146756 235 USART_ITConfig(usart, USART_IT_RXNE, ENABLE);
mbed_official 216:577900467c9e 236 } else { // TxIrq
mbed_official 76:aeb1df146756 237 USART_ITConfig(usart, USART_IT_TC, ENABLE);
mbed_official 216:577900467c9e 238 }
mbed_official 216:577900467c9e 239
mbed_official 76:aeb1df146756 240 NVIC_SetVector(irq_n, vector);
mbed_official 76:aeb1df146756 241 NVIC_EnableIRQ(irq_n);
mbed_official 216:577900467c9e 242
mbed_official 76:aeb1df146756 243 } else { // disable
mbed_official 216:577900467c9e 244
mbed_official 76:aeb1df146756 245 int all_disabled = 0;
mbed_official 216:577900467c9e 246
mbed_official 76:aeb1df146756 247 if (irq == RxIrq) {
mbed_official 76:aeb1df146756 248 USART_ITConfig(usart, USART_IT_RXNE, DISABLE);
mbed_official 76:aeb1df146756 249 // Check if TxIrq is disabled too
mbed_official 76:aeb1df146756 250 if ((usart->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 216:577900467c9e 251 } else { // TxIrq
mbed_official 76:aeb1df146756 252 USART_ITConfig(usart, USART_IT_TXE, DISABLE);
mbed_official 76:aeb1df146756 253 // Check if RxIrq is disabled too
mbed_official 216:577900467c9e 254 if ((usart->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 76:aeb1df146756 255 }
mbed_official 216:577900467c9e 256
mbed_official 76:aeb1df146756 257 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 216:577900467c9e 258
mbed_official 216:577900467c9e 259 }
mbed_official 76:aeb1df146756 260 }
mbed_official 76:aeb1df146756 261
mbed_official 76:aeb1df146756 262 /******************************************************************************
mbed_official 76:aeb1df146756 263 * READ/WRITE
mbed_official 76:aeb1df146756 264 ******************************************************************************/
mbed_official 76:aeb1df146756 265
mbed_official 76:aeb1df146756 266 int serial_getc(serial_t *obj) {
mbed_official 76:aeb1df146756 267 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 268 while (!serial_readable(obj));
mbed_official 76:aeb1df146756 269 return (int)(USART_ReceiveData(usart));
mbed_official 76:aeb1df146756 270 }
mbed_official 76:aeb1df146756 271
mbed_official 76:aeb1df146756 272 void serial_putc(serial_t *obj, int c) {
mbed_official 76:aeb1df146756 273 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 274 while (!serial_writable(obj));
mbed_official 76:aeb1df146756 275 USART_SendData(usart, (uint16_t)c);
mbed_official 76:aeb1df146756 276 }
mbed_official 76:aeb1df146756 277
mbed_official 76:aeb1df146756 278 int serial_readable(serial_t *obj) {
mbed_official 76:aeb1df146756 279 int status;
mbed_official 76:aeb1df146756 280 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 281 // Check if data is received
mbed_official 76:aeb1df146756 282 status = ((USART_GetFlagStatus(usart, USART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 76:aeb1df146756 283 return status;
mbed_official 76:aeb1df146756 284 }
mbed_official 76:aeb1df146756 285
mbed_official 76:aeb1df146756 286 int serial_writable(serial_t *obj) {
mbed_official 76:aeb1df146756 287 int status;
mbed_official 76:aeb1df146756 288 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 289 // Check if data is transmitted
mbed_official 76:aeb1df146756 290 status = ((USART_GetFlagStatus(usart, USART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 76:aeb1df146756 291 return status;
mbed_official 76:aeb1df146756 292 }
mbed_official 76:aeb1df146756 293
mbed_official 76:aeb1df146756 294 void serial_clear(serial_t *obj) {
mbed_official 76:aeb1df146756 295 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 296 USART_ClearFlag(usart, USART_FLAG_TXE);
mbed_official 76:aeb1df146756 297 USART_ClearFlag(usart, USART_FLAG_RXNE);
mbed_official 76:aeb1df146756 298 }
mbed_official 76:aeb1df146756 299
mbed_official 76:aeb1df146756 300 void serial_pinout_tx(PinName tx) {
mbed_official 76:aeb1df146756 301 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 76:aeb1df146756 302 }
mbed_official 76:aeb1df146756 303
mbed_official 76:aeb1df146756 304 void serial_break_set(serial_t *obj) {
mbed_official 76:aeb1df146756 305 }
mbed_official 76:aeb1df146756 306
mbed_official 76:aeb1df146756 307 void serial_break_clear(serial_t *obj) {
mbed_official 76:aeb1df146756 308 }
mbed_official 166:cb4253f91ada 309
mbed_official 166:cb4253f91ada 310 #endif