zain aftab / mbed-src

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Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F103RB/serial_api.c@414:4ec4c5b614b0, 2014-11-25 (annotated)

Committer:
mbed_official
Date:
Tue Nov 25 07:15:09 2014 +0000
Revision:
414:4ec4c5b614b0
Parent:
402:09075a3b15e3
Child:
490:119543c9f674
Synchronized with git revision fbc74e874ac089c6cb05add312fb5422be628886



Full URL: https://github.com/mbedmicro/mbed/commit/fbc74e874ac089c6cb05add312fb5422be628886/



Targets: NUCLEOs - Add PeripheralPins files for all nucleo targets

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 227:7bd0639b8911 30 #include "mbed_assert.h"
mbed_official 52:a51c77007319 31 #include "serial_api.h"
mbed_official 174:8bb9f3a33240 32
mbed_official 174:8bb9f3a33240 33 #if DEVICE_SERIAL
mbed_official 174:8bb9f3a33240 34
mbed_official 52:a51c77007319 35 #include "cmsis.h"
mbed_official 52:a51c77007319 36 #include "pinmap.h"
mbed_official 52:a51c77007319 37 #include <string.h>
mbed_official 414:4ec4c5b614b0 38 #include "PeripheralPins.h"
mbed_official 52:a51c77007319 39
mbed_official 167:d5744491c362 40 #define UART_NUM (3)
mbed_official 52:a51c77007319 41
mbed_official 167:d5744491c362 42 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0};
mbed_official 52:a51c77007319 43
mbed_official 52:a51c77007319 44 static uart_irq_handler irq_handler;
mbed_official 52:a51c77007319 45
mbed_official 52:a51c77007319 46 int stdio_uart_inited = 0;
mbed_official 52:a51c77007319 47 serial_t stdio_uart;
mbed_official 52:a51c77007319 48
mbed_official 402:09075a3b15e3 49 static void init_usart(serial_t *obj)
mbed_official 402:09075a3b15e3 50 {
mbed_official 56:99eb381a3269 51 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 52 USART_InitTypeDef USART_InitStructure;
mbed_official 174:8bb9f3a33240 53
mbed_official 56:99eb381a3269 54 USART_Cmd(usart, DISABLE);
mbed_official 56:99eb381a3269 55
mbed_official 167:d5744491c362 56 USART_InitStructure.USART_BaudRate = obj->baudrate;
mbed_official 167:d5744491c362 57 USART_InitStructure.USART_WordLength = obj->databits;
mbed_official 167:d5744491c362 58 USART_InitStructure.USART_StopBits = obj->stopbits;
mbed_official 167:d5744491c362 59 USART_InitStructure.USART_Parity = obj->parity;
mbed_official 56:99eb381a3269 60 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
mbed_official 242:7074e42da0b2 61
mbed_official 242:7074e42da0b2 62 if (obj->pin_rx == NC) {
mbed_official 242:7074e42da0b2 63 USART_InitStructure.USART_Mode = USART_Mode_Tx;
mbed_official 242:7074e42da0b2 64 } else if (obj->pin_tx == NC) {
mbed_official 242:7074e42da0b2 65 USART_InitStructure.USART_Mode = USART_Mode_Rx;
mbed_official 242:7074e42da0b2 66 } else {
mbed_official 242:7074e42da0b2 67 USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
mbed_official 242:7074e42da0b2 68 }
mbed_official 242:7074e42da0b2 69
mbed_official 56:99eb381a3269 70 USART_Init(usart, &USART_InitStructure);
mbed_official 174:8bb9f3a33240 71
mbed_official 56:99eb381a3269 72 USART_Cmd(usart, ENABLE);
mbed_official 56:99eb381a3269 73 }
mbed_official 56:99eb381a3269 74
mbed_official 402:09075a3b15e3 75 void serial_init(serial_t *obj, PinName tx, PinName rx)
mbed_official 402:09075a3b15e3 76 {
mbed_official 52:a51c77007319 77 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 52:a51c77007319 78 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 52:a51c77007319 79 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 174:8bb9f3a33240 80
mbed_official 52:a51c77007319 81 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 52:a51c77007319 82 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 227:7bd0639b8911 83 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 56:99eb381a3269 84
mbed_official 52:a51c77007319 85 // Enable USART clock
mbed_official 52:a51c77007319 86 if (obj->uart == UART_1) {
mbed_official 174:8bb9f3a33240 87 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
mbed_official 215:83cf97a28428 88 obj->index = 0;
mbed_official 52:a51c77007319 89 }
mbed_official 52:a51c77007319 90 if (obj->uart == UART_2) {
mbed_official 174:8bb9f3a33240 91 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
mbed_official 215:83cf97a28428 92 obj->index = 1;
mbed_official 52:a51c77007319 93 }
mbed_official 167:d5744491c362 94 if (obj->uart == UART_3) {
mbed_official 174:8bb9f3a33240 95 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
mbed_official 215:83cf97a28428 96 obj->index = 2;
mbed_official 167:d5744491c362 97 }
mbed_official 174:8bb9f3a33240 98
mbed_official 52:a51c77007319 99 // Configure the UART pins
mbed_official 52:a51c77007319 100 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 52:a51c77007319 101 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 52:a51c77007319 102
mbed_official 52:a51c77007319 103 // Configure UART
mbed_official 52:a51c77007319 104 obj->baudrate = 9600;
mbed_official 52:a51c77007319 105 obj->databits = USART_WordLength_8b;
mbed_official 52:a51c77007319 106 obj->stopbits = USART_StopBits_1;
mbed_official 174:8bb9f3a33240 107 obj->parity = USART_Parity_No;
mbed_official 52:a51c77007319 108
mbed_official 208:4557f4bb2dd5 109 obj->pin_tx = tx;
mbed_official 208:4557f4bb2dd5 110 obj->pin_rx = rx;
mbed_official 208:4557f4bb2dd5 111
mbed_official 56:99eb381a3269 112 init_usart(obj);
mbed_official 52:a51c77007319 113
mbed_official 52:a51c77007319 114 // For stdio management
mbed_official 52:a51c77007319 115 if (obj->uart == STDIO_UART) {
mbed_official 52:a51c77007319 116 stdio_uart_inited = 1;
mbed_official 52:a51c77007319 117 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 52:a51c77007319 118 }
mbed_official 52:a51c77007319 119 }
mbed_official 52:a51c77007319 120
mbed_official 402:09075a3b15e3 121 void serial_free(serial_t *obj)
mbed_official 402:09075a3b15e3 122 {
mbed_official 208:4557f4bb2dd5 123 // Reset UART and disable clock
mbed_official 208:4557f4bb2dd5 124 if (obj->uart == UART_1) {
mbed_official 208:4557f4bb2dd5 125 RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, ENABLE);
mbed_official 208:4557f4bb2dd5 126 RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, DISABLE);
mbed_official 208:4557f4bb2dd5 127 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, DISABLE);
mbed_official 208:4557f4bb2dd5 128 }
mbed_official 208:4557f4bb2dd5 129 if (obj->uart == UART_2) {
mbed_official 208:4557f4bb2dd5 130 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, ENABLE);
mbed_official 208:4557f4bb2dd5 131 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, DISABLE);
mbed_official 208:4557f4bb2dd5 132 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, DISABLE);
mbed_official 208:4557f4bb2dd5 133 }
mbed_official 208:4557f4bb2dd5 134 if (obj->uart == UART_3) {
mbed_official 208:4557f4bb2dd5 135 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART3, ENABLE);
mbed_official 208:4557f4bb2dd5 136 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART3, DISABLE);
mbed_official 208:4557f4bb2dd5 137 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, DISABLE);
mbed_official 208:4557f4bb2dd5 138 }
mbed_official 208:4557f4bb2dd5 139
mbed_official 208:4557f4bb2dd5 140 // Configure GPIOs
mbed_official 208:4557f4bb2dd5 141 pin_function(obj->pin_tx, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0));
mbed_official 208:4557f4bb2dd5 142 pin_function(obj->pin_rx, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0));
mbed_official 208:4557f4bb2dd5 143
mbed_official 52:a51c77007319 144 serial_irq_ids[obj->index] = 0;
mbed_official 52:a51c77007319 145 }
mbed_official 52:a51c77007319 146
mbed_official 402:09075a3b15e3 147 void serial_baud(serial_t *obj, int baudrate)
mbed_official 402:09075a3b15e3 148 {
mbed_official 52:a51c77007319 149 obj->baudrate = baudrate;
mbed_official 56:99eb381a3269 150 init_usart(obj);
mbed_official 52:a51c77007319 151 }
mbed_official 52:a51c77007319 152
mbed_official 402:09075a3b15e3 153 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
mbed_official 402:09075a3b15e3 154 {
mbed_official 242:7074e42da0b2 155 if (data_bits == 9) {
mbed_official 242:7074e42da0b2 156 obj->databits = USART_WordLength_9b;
mbed_official 242:7074e42da0b2 157 } else {
mbed_official 52:a51c77007319 158 obj->databits = USART_WordLength_8b;
mbed_official 52:a51c77007319 159 }
mbed_official 52:a51c77007319 160
mbed_official 52:a51c77007319 161 switch (parity) {
mbed_official 174:8bb9f3a33240 162 case ParityOdd:
mbed_official 174:8bb9f3a33240 163 case ParityForced0:
mbed_official 174:8bb9f3a33240 164 obj->parity = USART_Parity_Odd;
mbed_official 174:8bb9f3a33240 165 break;
mbed_official 174:8bb9f3a33240 166 case ParityEven:
mbed_official 174:8bb9f3a33240 167 case ParityForced1:
mbed_official 174:8bb9f3a33240 168 obj->parity = USART_Parity_Even;
mbed_official 174:8bb9f3a33240 169 break;
mbed_official 174:8bb9f3a33240 170 default: // ParityNone
mbed_official 174:8bb9f3a33240 171 obj->parity = USART_Parity_No;
mbed_official 174:8bb9f3a33240 172 break;
mbed_official 52:a51c77007319 173 }
mbed_official 174:8bb9f3a33240 174
mbed_official 52:a51c77007319 175 if (stop_bits == 2) {
mbed_official 52:a51c77007319 176 obj->stopbits = USART_StopBits_2;
mbed_official 174:8bb9f3a33240 177 } else {
mbed_official 52:a51c77007319 178 obj->stopbits = USART_StopBits_1;
mbed_official 52:a51c77007319 179 }
mbed_official 52:a51c77007319 180
mbed_official 56:99eb381a3269 181 init_usart(obj);
mbed_official 52:a51c77007319 182 }
mbed_official 52:a51c77007319 183
mbed_official 52:a51c77007319 184 /******************************************************************************
mbed_official 52:a51c77007319 185 * INTERRUPTS HANDLING
mbed_official 52:a51c77007319 186 ******************************************************************************/
mbed_official 52:a51c77007319 187
mbed_official 52:a51c77007319 188 // not api
mbed_official 402:09075a3b15e3 189 static void uart_irq(USART_TypeDef* usart, int id)
mbed_official 402:09075a3b15e3 190 {
mbed_official 55:3b765ca737a5 191 if (serial_irq_ids[id] != 0) {
mbed_official 55:3b765ca737a5 192 if (USART_GetITStatus(usart, USART_IT_TC) != RESET) {
mbed_official 55:3b765ca737a5 193 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 55:3b765ca737a5 194 USART_ClearITPendingBit(usart, USART_IT_TC);
mbed_official 52:a51c77007319 195 }
mbed_official 52:a51c77007319 196 if (USART_GetITStatus(usart, USART_IT_RXNE) != RESET) {
mbed_official 55:3b765ca737a5 197 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 55:3b765ca737a5 198 USART_ClearITPendingBit(usart, USART_IT_RXNE);
mbed_official 52:a51c77007319 199 }
mbed_official 52:a51c77007319 200 }
mbed_official 52:a51c77007319 201 }
mbed_official 52:a51c77007319 202
mbed_official 402:09075a3b15e3 203 static void uart1_irq(void)
mbed_official 402:09075a3b15e3 204 {
mbed_official 167:d5744491c362 205 uart_irq((USART_TypeDef*)UART_1, 0);
mbed_official 167:d5744491c362 206 }
mbed_official 402:09075a3b15e3 207 static void uart2_irq(void)
mbed_official 402:09075a3b15e3 208 {
mbed_official 167:d5744491c362 209 uart_irq((USART_TypeDef*)UART_2, 1);
mbed_official 167:d5744491c362 210 }
mbed_official 402:09075a3b15e3 211 static void uart3_irq(void)
mbed_official 402:09075a3b15e3 212 {
mbed_official 167:d5744491c362 213 uart_irq((USART_TypeDef*)UART_3, 2);
mbed_official 167:d5744491c362 214 }
mbed_official 52:a51c77007319 215
mbed_official 402:09075a3b15e3 216 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
mbed_official 402:09075a3b15e3 217 {
mbed_official 52:a51c77007319 218 irq_handler = handler;
mbed_official 52:a51c77007319 219 serial_irq_ids[obj->index] = id;
mbed_official 52:a51c77007319 220 }
mbed_official 52:a51c77007319 221
mbed_official 402:09075a3b15e3 222 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
mbed_official 402:09075a3b15e3 223 {
mbed_official 52:a51c77007319 224 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 52:a51c77007319 225 uint32_t vector = 0;
mbed_official 52:a51c77007319 226 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 227
mbed_official 52:a51c77007319 228 if (obj->uart == UART_1) {
mbed_official 174:8bb9f3a33240 229 irq_n = USART1_IRQn;
mbed_official 174:8bb9f3a33240 230 vector = (uint32_t)&uart1_irq;
mbed_official 52:a51c77007319 231 }
mbed_official 174:8bb9f3a33240 232
mbed_official 52:a51c77007319 233 if (obj->uart == UART_2) {
mbed_official 174:8bb9f3a33240 234 irq_n = USART2_IRQn;
mbed_official 174:8bb9f3a33240 235 vector = (uint32_t)&uart2_irq;
mbed_official 52:a51c77007319 236 }
mbed_official 167:d5744491c362 237
mbed_official 167:d5744491c362 238 if (obj->uart == UART_3) {
mbed_official 174:8bb9f3a33240 239 irq_n = USART3_IRQn;
mbed_official 174:8bb9f3a33240 240 vector = (uint32_t)&uart3_irq;
mbed_official 167:d5744491c362 241 }
mbed_official 174:8bb9f3a33240 242
mbed_official 52:a51c77007319 243 if (enable) {
mbed_official 174:8bb9f3a33240 244
mbed_official 52:a51c77007319 245 if (irq == RxIrq) {
mbed_official 52:a51c77007319 246 USART_ITConfig(usart, USART_IT_RXNE, ENABLE);
mbed_official 174:8bb9f3a33240 247 } else { // TxIrq
mbed_official 55:3b765ca737a5 248 USART_ITConfig(usart, USART_IT_TC, ENABLE);
mbed_official 174:8bb9f3a33240 249 }
mbed_official 174:8bb9f3a33240 250
mbed_official 52:a51c77007319 251 NVIC_SetVector(irq_n, vector);
mbed_official 52:a51c77007319 252 NVIC_EnableIRQ(irq_n);
mbed_official 174:8bb9f3a33240 253
mbed_official 52:a51c77007319 254 } else { // disable
mbed_official 174:8bb9f3a33240 255
mbed_official 52:a51c77007319 256 int all_disabled = 0;
mbed_official 174:8bb9f3a33240 257
mbed_official 52:a51c77007319 258 if (irq == RxIrq) {
mbed_official 52:a51c77007319 259 USART_ITConfig(usart, USART_IT_RXNE, DISABLE);
mbed_official 52:a51c77007319 260 // Check if TxIrq is disabled too
mbed_official 52:a51c77007319 261 if ((usart->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 174:8bb9f3a33240 262 } else { // TxIrq
mbed_official 52:a51c77007319 263 USART_ITConfig(usart, USART_IT_TXE, DISABLE);
mbed_official 52:a51c77007319 264 // Check if RxIrq is disabled too
mbed_official 174:8bb9f3a33240 265 if ((usart->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 52:a51c77007319 266 }
mbed_official 174:8bb9f3a33240 267
mbed_official 52:a51c77007319 268 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 174:8bb9f3a33240 269
mbed_official 174:8bb9f3a33240 270 }
mbed_official 52:a51c77007319 271 }
mbed_official 52:a51c77007319 272
mbed_official 52:a51c77007319 273 /******************************************************************************
mbed_official 52:a51c77007319 274 * READ/WRITE
mbed_official 52:a51c77007319 275 ******************************************************************************/
mbed_official 52:a51c77007319 276
mbed_official 402:09075a3b15e3 277 int serial_getc(serial_t *obj)
mbed_official 402:09075a3b15e3 278 {
mbed_official 52:a51c77007319 279 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 280 while (!serial_readable(obj));
mbed_official 52:a51c77007319 281 return (int)(USART_ReceiveData(usart));
mbed_official 52:a51c77007319 282 }
mbed_official 52:a51c77007319 283
mbed_official 402:09075a3b15e3 284 void serial_putc(serial_t *obj, int c)
mbed_official 402:09075a3b15e3 285 {
mbed_official 52:a51c77007319 286 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 287 while (!serial_writable(obj));
mbed_official 52:a51c77007319 288 USART_SendData(usart, (uint16_t)c);
mbed_official 52:a51c77007319 289 }
mbed_official 52:a51c77007319 290
mbed_official 402:09075a3b15e3 291 int serial_readable(serial_t *obj)
mbed_official 402:09075a3b15e3 292 {
mbed_official 52:a51c77007319 293 int status;
mbed_official 52:a51c77007319 294 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 295 // Check if data is received
mbed_official 52:a51c77007319 296 status = ((USART_GetFlagStatus(usart, USART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 52:a51c77007319 297 return status;
mbed_official 52:a51c77007319 298 }
mbed_official 52:a51c77007319 299
mbed_official 402:09075a3b15e3 300 int serial_writable(serial_t *obj)
mbed_official 402:09075a3b15e3 301 {
mbed_official 52:a51c77007319 302 int status;
mbed_official 52:a51c77007319 303 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 304 // Check if data is transmitted
mbed_official 52:a51c77007319 305 status = ((USART_GetFlagStatus(usart, USART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 52:a51c77007319 306 return status;
mbed_official 52:a51c77007319 307 }
mbed_official 52:a51c77007319 308
mbed_official 402:09075a3b15e3 309 void serial_clear(serial_t *obj)
mbed_official 402:09075a3b15e3 310 {
mbed_official 52:a51c77007319 311 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 312 USART_ClearFlag(usart, USART_FLAG_TXE);
mbed_official 52:a51c77007319 313 USART_ClearFlag(usart, USART_FLAG_RXNE);
mbed_official 52:a51c77007319 314 }
mbed_official 52:a51c77007319 315
mbed_official 402:09075a3b15e3 316 void serial_pinout_tx(PinName tx)
mbed_official 402:09075a3b15e3 317 {
mbed_official 52:a51c77007319 318 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 52:a51c77007319 319 }
mbed_official 52:a51c77007319 320
mbed_official 402:09075a3b15e3 321 void serial_break_set(serial_t *obj)
mbed_official 402:09075a3b15e3 322 {
mbed_official 52:a51c77007319 323 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 324 USART_SendBreak(usart);
mbed_official 52:a51c77007319 325 }
mbed_official 52:a51c77007319 326
mbed_official 402:09075a3b15e3 327 void serial_break_clear(serial_t *obj)
mbed_official 402:09075a3b15e3 328 {
mbed_official 52:a51c77007319 329 }
mbed_official 174:8bb9f3a33240 330
mbed_official 174:8bb9f3a33240 331 #endif