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mbed library sources

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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F103RB/serial_api.c@167:d5744491c362, 2014-04-23 (annotated)

Committer:
mbed_official
Date:
Wed Apr 23 11:00:08 2014 +0100
Revision:
167:d5744491c362
Parent:
70:c1fbde68b492
Child:
174:8bb9f3a33240
Synchronized with git revision 6cf73e2e267b625c71cbf586a1d74e7e4972a369



Full URL: https://github.com/mbedmicro/mbed/commit/6cf73e2e267b625c71cbf586a1d74e7e4972a369/



[NUCLEO_F030R8/F302R8] Move back SetSysClock() call in SystemInit()

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 52:a51c77007319 1 /* mbed Microcontroller Library
mbed_official 70:c1fbde68b492 2 *******************************************************************************
mbed_official 70:c1fbde68b492 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 70:c1fbde68b492 4 * All rights reserved.
mbed_official 52:a51c77007319 5 *
mbed_official 70:c1fbde68b492 6 * Redistribution and use in source and binary forms, with or without
mbed_official 70:c1fbde68b492 7 * modification, are permitted provided that the following conditions are met:
mbed_official 52:a51c77007319 8 *
mbed_official 70:c1fbde68b492 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 70:c1fbde68b492 10 * this list of conditions and the following disclaimer.
mbed_official 70:c1fbde68b492 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 70:c1fbde68b492 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 70:c1fbde68b492 13 * and/or other materials provided with the distribution.
mbed_official 70:c1fbde68b492 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 70:c1fbde68b492 15 * may be used to endorse or promote products derived from this software
mbed_official 70:c1fbde68b492 16 * without specific prior written permission.
mbed_official 52:a51c77007319 17 *
mbed_official 70:c1fbde68b492 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 70:c1fbde68b492 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 70:c1fbde68b492 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 70:c1fbde68b492 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 70:c1fbde68b492 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 70:c1fbde68b492 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 70:c1fbde68b492 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 70:c1fbde68b492 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 70:c1fbde68b492 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 70:c1fbde68b492 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 70:c1fbde68b492 28 *******************************************************************************
mbed_official 52:a51c77007319 29 */
mbed_official 52:a51c77007319 30 #include "serial_api.h"
mbed_official 52:a51c77007319 31 #include "cmsis.h"
mbed_official 52:a51c77007319 32 #include "pinmap.h"
mbed_official 52:a51c77007319 33 #include "error.h"
mbed_official 52:a51c77007319 34 #include <string.h>
mbed_official 52:a51c77007319 35
mbed_official 52:a51c77007319 36 static const PinMap PinMap_UART_TX[] = {
mbed_official 167:d5744491c362 37 {PA_2, UART_2, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)},
mbed_official 52:a51c77007319 38 {PA_9, UART_1, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)},
mbed_official 167:d5744491c362 39 {PB_6, UART_1, STM_PIN_DATA(GPIO_Mode_AF_PP, 3)}, // GPIO_Remap_USART1
mbed_official 167:d5744491c362 40 {PB_10, UART_3, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)},
mbed_official 167:d5744491c362 41 {PC_10, UART_3, STM_PIN_DATA(GPIO_Mode_AF_PP, 5)}, // GPIO_PartialRemap_USART3
mbed_official 52:a51c77007319 42 {NC, NC, 0}
mbed_official 52:a51c77007319 43 };
mbed_official 52:a51c77007319 44
mbed_official 52:a51c77007319 45 static const PinMap PinMap_UART_RX[] = {
mbed_official 167:d5744491c362 46 {PA_3, UART_2, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0)},
mbed_official 52:a51c77007319 47 {PA_10, UART_1, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0)},
mbed_official 167:d5744491c362 48 {PB_7, UART_1, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 3)}, // GPIO_Remap_USART1
mbed_official 167:d5744491c362 49 {PB_11, UART_3, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0)},
mbed_official 167:d5744491c362 50 {PC_11, UART_3, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 5)}, // GPIO_PartialRemap_USART3
mbed_official 52:a51c77007319 51 {NC, NC, 0}
mbed_official 52:a51c77007319 52 };
mbed_official 52:a51c77007319 53
mbed_official 167:d5744491c362 54 #define UART_NUM (3)
mbed_official 52:a51c77007319 55
mbed_official 167:d5744491c362 56 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0};
mbed_official 52:a51c77007319 57
mbed_official 52:a51c77007319 58 static uart_irq_handler irq_handler;
mbed_official 52:a51c77007319 59
mbed_official 52:a51c77007319 60 int stdio_uart_inited = 0;
mbed_official 52:a51c77007319 61 serial_t stdio_uart;
mbed_official 52:a51c77007319 62
mbed_official 56:99eb381a3269 63 static void init_usart(serial_t *obj) {
mbed_official 56:99eb381a3269 64 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 65 USART_InitTypeDef USART_InitStructure;
mbed_official 52:a51c77007319 66
mbed_official 56:99eb381a3269 67 USART_Cmd(usart, DISABLE);
mbed_official 56:99eb381a3269 68
mbed_official 167:d5744491c362 69 USART_InitStructure.USART_BaudRate = obj->baudrate;
mbed_official 167:d5744491c362 70 USART_InitStructure.USART_WordLength = obj->databits;
mbed_official 167:d5744491c362 71 USART_InitStructure.USART_StopBits = obj->stopbits;
mbed_official 167:d5744491c362 72 USART_InitStructure.USART_Parity = obj->parity;
mbed_official 56:99eb381a3269 73 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
mbed_official 167:d5744491c362 74 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
mbed_official 56:99eb381a3269 75 USART_Init(usart, &USART_InitStructure);
mbed_official 56:99eb381a3269 76
mbed_official 56:99eb381a3269 77 USART_Cmd(usart, ENABLE);
mbed_official 56:99eb381a3269 78 }
mbed_official 56:99eb381a3269 79
mbed_official 56:99eb381a3269 80 void serial_init(serial_t *obj, PinName tx, PinName rx) {
mbed_official 52:a51c77007319 81 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 52:a51c77007319 82 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 52:a51c77007319 83 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 52:a51c77007319 84
mbed_official 52:a51c77007319 85 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 52:a51c77007319 86 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 52:a51c77007319 87
mbed_official 52:a51c77007319 88 if (obj->uart == (UARTName)NC) {
mbed_official 52:a51c77007319 89 error("Serial pinout mapping failed");
mbed_official 52:a51c77007319 90 }
mbed_official 56:99eb381a3269 91
mbed_official 52:a51c77007319 92 // Enable USART clock
mbed_official 52:a51c77007319 93 if (obj->uart == UART_1) {
mbed_official 52:a51c77007319 94 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
mbed_official 52:a51c77007319 95 }
mbed_official 52:a51c77007319 96 if (obj->uart == UART_2) {
mbed_official 52:a51c77007319 97 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
mbed_official 52:a51c77007319 98 }
mbed_official 167:d5744491c362 99 if (obj->uart == UART_3) {
mbed_official 167:d5744491c362 100 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
mbed_official 167:d5744491c362 101 }
mbed_official 167:d5744491c362 102
mbed_official 52:a51c77007319 103 // Configure the UART pins
mbed_official 52:a51c77007319 104 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 52:a51c77007319 105 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 52:a51c77007319 106
mbed_official 52:a51c77007319 107 // Configure UART
mbed_official 52:a51c77007319 108 obj->baudrate = 9600;
mbed_official 52:a51c77007319 109 obj->databits = USART_WordLength_8b;
mbed_official 52:a51c77007319 110 obj->stopbits = USART_StopBits_1;
mbed_official 52:a51c77007319 111 obj->parity = USART_Parity_No;
mbed_official 52:a51c77007319 112
mbed_official 56:99eb381a3269 113 init_usart(obj);
mbed_official 52:a51c77007319 114
mbed_official 52:a51c77007319 115 // The index is used by irq
mbed_official 52:a51c77007319 116 if (obj->uart == UART_1) obj->index = 0;
mbed_official 52:a51c77007319 117 if (obj->uart == UART_2) obj->index = 1;
mbed_official 167:d5744491c362 118 if (obj->uart == UART_3) obj->index = 2;
mbed_official 52:a51c77007319 119
mbed_official 52:a51c77007319 120 // For stdio management
mbed_official 52:a51c77007319 121 if (obj->uart == STDIO_UART) {
mbed_official 52:a51c77007319 122 stdio_uart_inited = 1;
mbed_official 52:a51c77007319 123 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 52:a51c77007319 124 }
mbed_official 52:a51c77007319 125
mbed_official 52:a51c77007319 126 }
mbed_official 52:a51c77007319 127
mbed_official 52:a51c77007319 128 void serial_free(serial_t *obj) {
mbed_official 52:a51c77007319 129 serial_irq_ids[obj->index] = 0;
mbed_official 52:a51c77007319 130 }
mbed_official 52:a51c77007319 131
mbed_official 52:a51c77007319 132 void serial_baud(serial_t *obj, int baudrate) {
mbed_official 52:a51c77007319 133 obj->baudrate = baudrate;
mbed_official 56:99eb381a3269 134 init_usart(obj);
mbed_official 52:a51c77007319 135 }
mbed_official 52:a51c77007319 136
mbed_official 52:a51c77007319 137 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
mbed_official 52:a51c77007319 138 if (data_bits == 8) {
mbed_official 52:a51c77007319 139 obj->databits = USART_WordLength_8b;
mbed_official 52:a51c77007319 140 }
mbed_official 52:a51c77007319 141 else {
mbed_official 52:a51c77007319 142 obj->databits = USART_WordLength_9b;
mbed_official 52:a51c77007319 143 }
mbed_official 52:a51c77007319 144
mbed_official 52:a51c77007319 145 switch (parity) {
mbed_official 52:a51c77007319 146 case ParityOdd:
mbed_official 52:a51c77007319 147 case ParityForced0:
mbed_official 52:a51c77007319 148 obj->parity = USART_Parity_Odd;
mbed_official 52:a51c77007319 149 break;
mbed_official 52:a51c77007319 150 case ParityEven:
mbed_official 52:a51c77007319 151 case ParityForced1:
mbed_official 52:a51c77007319 152 obj->parity = USART_Parity_Even;
mbed_official 52:a51c77007319 153 break;
mbed_official 52:a51c77007319 154 default: // ParityNone
mbed_official 52:a51c77007319 155 obj->parity = USART_Parity_No;
mbed_official 52:a51c77007319 156 break;
mbed_official 52:a51c77007319 157 }
mbed_official 52:a51c77007319 158
mbed_official 52:a51c77007319 159 if (stop_bits == 2) {
mbed_official 52:a51c77007319 160 obj->stopbits = USART_StopBits_2;
mbed_official 52:a51c77007319 161 }
mbed_official 52:a51c77007319 162 else {
mbed_official 52:a51c77007319 163 obj->stopbits = USART_StopBits_1;
mbed_official 52:a51c77007319 164 }
mbed_official 52:a51c77007319 165
mbed_official 56:99eb381a3269 166 init_usart(obj);
mbed_official 52:a51c77007319 167 }
mbed_official 52:a51c77007319 168
mbed_official 52:a51c77007319 169 /******************************************************************************
mbed_official 52:a51c77007319 170 * INTERRUPTS HANDLING
mbed_official 52:a51c77007319 171 ******************************************************************************/
mbed_official 52:a51c77007319 172
mbed_official 52:a51c77007319 173 // not api
mbed_official 55:3b765ca737a5 174 static void uart_irq(USART_TypeDef* usart, int id) {
mbed_official 55:3b765ca737a5 175 if (serial_irq_ids[id] != 0) {
mbed_official 55:3b765ca737a5 176 if (USART_GetITStatus(usart, USART_IT_TC) != RESET) {
mbed_official 55:3b765ca737a5 177 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 55:3b765ca737a5 178 USART_ClearITPendingBit(usart, USART_IT_TC);
mbed_official 52:a51c77007319 179 }
mbed_official 52:a51c77007319 180 if (USART_GetITStatus(usart, USART_IT_RXNE) != RESET) {
mbed_official 55:3b765ca737a5 181 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 55:3b765ca737a5 182 USART_ClearITPendingBit(usart, USART_IT_RXNE);
mbed_official 52:a51c77007319 183 }
mbed_official 52:a51c77007319 184 }
mbed_official 52:a51c77007319 185 }
mbed_official 52:a51c77007319 186
mbed_official 167:d5744491c362 187 static void uart1_irq(void) {
mbed_official 167:d5744491c362 188 uart_irq((USART_TypeDef*)UART_1, 0);
mbed_official 167:d5744491c362 189 }
mbed_official 167:d5744491c362 190 static void uart2_irq(void) {
mbed_official 167:d5744491c362 191 uart_irq((USART_TypeDef*)UART_2, 1);
mbed_official 167:d5744491c362 192 }
mbed_official 167:d5744491c362 193 static void uart3_irq(void) {
mbed_official 167:d5744491c362 194 uart_irq((USART_TypeDef*)UART_3, 2);
mbed_official 167:d5744491c362 195 }
mbed_official 52:a51c77007319 196
mbed_official 52:a51c77007319 197 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
mbed_official 52:a51c77007319 198 irq_handler = handler;
mbed_official 52:a51c77007319 199 serial_irq_ids[obj->index] = id;
mbed_official 52:a51c77007319 200 }
mbed_official 52:a51c77007319 201
mbed_official 52:a51c77007319 202 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
mbed_official 52:a51c77007319 203 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 52:a51c77007319 204 uint32_t vector = 0;
mbed_official 52:a51c77007319 205 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 206
mbed_official 52:a51c77007319 207 if (obj->uart == UART_1) {
mbed_official 52:a51c77007319 208 irq_n = USART1_IRQn;
mbed_official 52:a51c77007319 209 vector = (uint32_t)&uart1_irq;
mbed_official 52:a51c77007319 210 }
mbed_official 52:a51c77007319 211
mbed_official 52:a51c77007319 212 if (obj->uart == UART_2) {
mbed_official 52:a51c77007319 213 irq_n = USART2_IRQn;
mbed_official 52:a51c77007319 214 vector = (uint32_t)&uart2_irq;
mbed_official 52:a51c77007319 215 }
mbed_official 167:d5744491c362 216
mbed_official 167:d5744491c362 217 if (obj->uart == UART_3) {
mbed_official 167:d5744491c362 218 irq_n = USART3_IRQn;
mbed_official 167:d5744491c362 219 vector = (uint32_t)&uart3_irq;
mbed_official 167:d5744491c362 220 }
mbed_official 52:a51c77007319 221
mbed_official 52:a51c77007319 222 if (enable) {
mbed_official 52:a51c77007319 223
mbed_official 52:a51c77007319 224 if (irq == RxIrq) {
mbed_official 52:a51c77007319 225 USART_ITConfig(usart, USART_IT_RXNE, ENABLE);
mbed_official 52:a51c77007319 226 }
mbed_official 52:a51c77007319 227 else { // TxIrq
mbed_official 55:3b765ca737a5 228 USART_ITConfig(usart, USART_IT_TC, ENABLE);
mbed_official 52:a51c77007319 229 }
mbed_official 52:a51c77007319 230
mbed_official 52:a51c77007319 231 NVIC_SetVector(irq_n, vector);
mbed_official 52:a51c77007319 232 NVIC_EnableIRQ(irq_n);
mbed_official 52:a51c77007319 233
mbed_official 52:a51c77007319 234 } else { // disable
mbed_official 52:a51c77007319 235
mbed_official 52:a51c77007319 236 int all_disabled = 0;
mbed_official 52:a51c77007319 237
mbed_official 52:a51c77007319 238 if (irq == RxIrq) {
mbed_official 52:a51c77007319 239 USART_ITConfig(usart, USART_IT_RXNE, DISABLE);
mbed_official 52:a51c77007319 240 // Check if TxIrq is disabled too
mbed_official 52:a51c77007319 241 if ((usart->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 52:a51c77007319 242 }
mbed_official 52:a51c77007319 243 else { // TxIrq
mbed_official 52:a51c77007319 244 USART_ITConfig(usart, USART_IT_TXE, DISABLE);
mbed_official 52:a51c77007319 245 // Check if RxIrq is disabled too
mbed_official 52:a51c77007319 246 if ((usart->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 52:a51c77007319 247 }
mbed_official 52:a51c77007319 248
mbed_official 52:a51c77007319 249 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 52:a51c77007319 250
mbed_official 52:a51c77007319 251 }
mbed_official 52:a51c77007319 252 }
mbed_official 52:a51c77007319 253
mbed_official 52:a51c77007319 254 /******************************************************************************
mbed_official 52:a51c77007319 255 * READ/WRITE
mbed_official 52:a51c77007319 256 ******************************************************************************/
mbed_official 52:a51c77007319 257
mbed_official 52:a51c77007319 258 int serial_getc(serial_t *obj) {
mbed_official 52:a51c77007319 259 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 260 while (!serial_readable(obj));
mbed_official 52:a51c77007319 261 return (int)(USART_ReceiveData(usart));
mbed_official 52:a51c77007319 262 }
mbed_official 52:a51c77007319 263
mbed_official 52:a51c77007319 264 void serial_putc(serial_t *obj, int c) {
mbed_official 52:a51c77007319 265 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 266 while (!serial_writable(obj));
mbed_official 52:a51c77007319 267 USART_SendData(usart, (uint16_t)c);
mbed_official 52:a51c77007319 268 }
mbed_official 52:a51c77007319 269
mbed_official 52:a51c77007319 270 int serial_readable(serial_t *obj) {
mbed_official 52:a51c77007319 271 int status;
mbed_official 52:a51c77007319 272 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 273 // Check if data is received
mbed_official 52:a51c77007319 274 status = ((USART_GetFlagStatus(usart, USART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 52:a51c77007319 275 return status;
mbed_official 52:a51c77007319 276 }
mbed_official 52:a51c77007319 277
mbed_official 52:a51c77007319 278 int serial_writable(serial_t *obj) {
mbed_official 52:a51c77007319 279 int status;
mbed_official 52:a51c77007319 280 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 281 // Check if data is transmitted
mbed_official 52:a51c77007319 282 status = ((USART_GetFlagStatus(usart, USART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 52:a51c77007319 283 return status;
mbed_official 52:a51c77007319 284 }
mbed_official 52:a51c77007319 285
mbed_official 52:a51c77007319 286 void serial_clear(serial_t *obj) {
mbed_official 52:a51c77007319 287 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 288 USART_ClearFlag(usart, USART_FLAG_TXE);
mbed_official 52:a51c77007319 289 USART_ClearFlag(usart, USART_FLAG_RXNE);
mbed_official 52:a51c77007319 290 }
mbed_official 52:a51c77007319 291
mbed_official 52:a51c77007319 292 void serial_pinout_tx(PinName tx) {
mbed_official 52:a51c77007319 293 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 52:a51c77007319 294 }
mbed_official 52:a51c77007319 295
mbed_official 52:a51c77007319 296 void serial_break_set(serial_t *obj) {
mbed_official 52:a51c77007319 297 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 298 USART_SendBreak(usart);
mbed_official 52:a51c77007319 299 }
mbed_official 52:a51c77007319 300
mbed_official 52:a51c77007319 301 void serial_break_clear(serial_t *obj) {
mbed_official 52:a51c77007319 302 }