lzbp li / mbed-src

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targets/hal/TARGET_STM/TARGET_STM32F1/serial_api.c@636:b0d178e9fa10, 2016-07-07 (annotated)

Committer:
lzbpli
Date:
Thu Jul 07 06:48:59 2016 +0000
Revision:
636:b0d178e9fa10
Parent:
508:4f5903e025e6 
l053

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 489:119543c9f674 46 UART_HandleTypeDef UartHandle;
mbed_official 489:119543c9f674 47
mbed_official 52:a51c77007319 48 int stdio_uart_inited = 0;
mbed_official 52:a51c77007319 49 serial_t stdio_uart;
mbed_official 52:a51c77007319 50
mbed_official 489:119543c9f674 51 static void init_uart(serial_t *obj)
mbed_official 402:09075a3b15e3 52 {
mbed_official 489:119543c9f674 53 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 174:8bb9f3a33240 54
mbed_official 489:119543c9f674 55 UartHandle.Init.BaudRate = obj->baudrate;
mbed_official 489:119543c9f674 56 UartHandle.Init.WordLength = obj->databits;
mbed_official 489:119543c9f674 57 UartHandle.Init.StopBits = obj->stopbits;
mbed_official 489:119543c9f674 58 UartHandle.Init.Parity = obj->parity;
mbed_official 489:119543c9f674 59 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
mbed_official 242:7074e42da0b2 60
mbed_official 242:7074e42da0b2 61 if (obj->pin_rx == NC) {
mbed_official 489:119543c9f674 62 UartHandle.Init.Mode = UART_MODE_TX;
mbed_official 242:7074e42da0b2 63 } else if (obj->pin_tx == NC) {
mbed_official 489:119543c9f674 64 UartHandle.Init.Mode = UART_MODE_RX;
mbed_official 242:7074e42da0b2 65 } else {
mbed_official 489:119543c9f674 66 UartHandle.Init.Mode = UART_MODE_TX_RX;
mbed_official 242:7074e42da0b2 67 }
mbed_official 242:7074e42da0b2 68
mbed_official 489:119543c9f674 69 HAL_UART_Init(&UartHandle);
mbed_official 56:99eb381a3269 70 }
mbed_official 56:99eb381a3269 71
mbed_official 402:09075a3b15e3 72 void serial_init(serial_t *obj, PinName tx, PinName rx)
mbed_official 402:09075a3b15e3 73 {
mbed_official 52:a51c77007319 74 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 52:a51c77007319 75 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 52:a51c77007319 76 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 174:8bb9f3a33240 77
mbed_official 52:a51c77007319 78 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 52:a51c77007319 79 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 227:7bd0639b8911 80 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 56:99eb381a3269 81
mbed_official 489:119543c9f674 82 // Enable UART clock
mbed_official 52:a51c77007319 83 if (obj->uart == UART_1) {
mbed_official 489:119543c9f674 84 __HAL_RCC_USART1_CLK_ENABLE();
mbed_official 215:83cf97a28428 85 obj->index = 0;
mbed_official 52:a51c77007319 86 }
mbed_official 52:a51c77007319 87 if (obj->uart == UART_2) {
mbed_official 489:119543c9f674 88 __HAL_RCC_USART2_CLK_ENABLE();
mbed_official 215:83cf97a28428 89 obj->index = 1;
mbed_official 52:a51c77007319 90 }
mbed_official 167:d5744491c362 91 if (obj->uart == UART_3) {
mbed_official 489:119543c9f674 92 __HAL_RCC_USART3_CLK_ENABLE();
mbed_official 215:83cf97a28428 93 obj->index = 2;
mbed_official 167:d5744491c362 94 }
mbed_official 174:8bb9f3a33240 95
mbed_official 489:119543c9f674 96 // Configure UART pins
mbed_official 52:a51c77007319 97 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 52:a51c77007319 98 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 489:119543c9f674 99 if (tx != NC) {
mbed_official 489:119543c9f674 100 pin_mode(tx, PullUp);
mbed_official 489:119543c9f674 101 }
mbed_official 489:119543c9f674 102 if (rx != NC) {
mbed_official 489:119543c9f674 103 pin_mode(rx, PullUp);
mbed_official 489:119543c9f674 104 }
mbed_official 52:a51c77007319 105
mbed_official 52:a51c77007319 106 // Configure UART
mbed_official 52:a51c77007319 107 obj->baudrate = 9600;
mbed_official 489:119543c9f674 108 obj->databits = UART_WORDLENGTH_8B;
mbed_official 489:119543c9f674 109 obj->stopbits = UART_STOPBITS_1;
mbed_official 489:119543c9f674 110 obj->parity = UART_PARITY_NONE;
mbed_official 52:a51c77007319 111
mbed_official 208:4557f4bb2dd5 112 obj->pin_tx = tx;
mbed_official 208:4557f4bb2dd5 113 obj->pin_rx = rx;
mbed_official 208:4557f4bb2dd5 114
mbed_official 489:119543c9f674 115 init_uart(obj);
mbed_official 52:a51c77007319 116
mbed_official 52:a51c77007319 117 // For stdio management
mbed_official 52:a51c77007319 118 if (obj->uart == STDIO_UART) {
mbed_official 52:a51c77007319 119 stdio_uart_inited = 1;
mbed_official 52:a51c77007319 120 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 52:a51c77007319 121 }
mbed_official 52:a51c77007319 122 }
mbed_official 52:a51c77007319 123
mbed_official 402:09075a3b15e3 124 void serial_free(serial_t *obj)
mbed_official 402:09075a3b15e3 125 {
mbed_official 208:4557f4bb2dd5 126 // Reset UART and disable clock
mbed_official 208:4557f4bb2dd5 127 if (obj->uart == UART_1) {
mbed_official 489:119543c9f674 128 __USART1_FORCE_RESET();
mbed_official 489:119543c9f674 129 __USART1_RELEASE_RESET();
mbed_official 489:119543c9f674 130 __USART1_CLK_DISABLE();
mbed_official 208:4557f4bb2dd5 131 }
mbed_official 208:4557f4bb2dd5 132 if (obj->uart == UART_2) {
mbed_official 489:119543c9f674 133 __USART2_FORCE_RESET();
mbed_official 489:119543c9f674 134 __USART2_RELEASE_RESET();
mbed_official 489:119543c9f674 135 __USART2_CLK_DISABLE();
mbed_official 208:4557f4bb2dd5 136 }
mbed_official 208:4557f4bb2dd5 137 if (obj->uart == UART_3) {
mbed_official 489:119543c9f674 138 __USART3_FORCE_RESET();
mbed_official 489:119543c9f674 139 __USART3_RELEASE_RESET();
mbed_official 489:119543c9f674 140 __USART3_CLK_DISABLE();
mbed_official 208:4557f4bb2dd5 141 }
mbed_official 208:4557f4bb2dd5 142
mbed_official 208:4557f4bb2dd5 143 // Configure GPIOs
mbed_official 489:119543c9f674 144 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 489:119543c9f674 145 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 208:4557f4bb2dd5 146
mbed_official 52:a51c77007319 147 serial_irq_ids[obj->index] = 0;
mbed_official 52:a51c77007319 148 }
mbed_official 52:a51c77007319 149
mbed_official 402:09075a3b15e3 150 void serial_baud(serial_t *obj, int baudrate)
mbed_official 402:09075a3b15e3 151 {
mbed_official 52:a51c77007319 152 obj->baudrate = baudrate;
mbed_official 489:119543c9f674 153 init_uart(obj);
mbed_official 52:a51c77007319 154 }
mbed_official 52:a51c77007319 155
mbed_official 402:09075a3b15e3 156 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
mbed_official 402:09075a3b15e3 157 {
mbed_official 242:7074e42da0b2 158 if (data_bits == 9) {
mbed_official 489:119543c9f674 159 obj->databits = UART_WORDLENGTH_9B;
mbed_official 242:7074e42da0b2 160 } else {
mbed_official 489:119543c9f674 161 obj->databits = UART_WORDLENGTH_8B;
mbed_official 52:a51c77007319 162 }
mbed_official 52:a51c77007319 163
mbed_official 52:a51c77007319 164 switch (parity) {
mbed_official 174:8bb9f3a33240 165 case ParityOdd:
mbed_official 174:8bb9f3a33240 166 case ParityForced0:
mbed_official 489:119543c9f674 167 obj->parity = UART_PARITY_ODD;
mbed_official 174:8bb9f3a33240 168 break;
mbed_official 174:8bb9f3a33240 169 case ParityEven:
mbed_official 174:8bb9f3a33240 170 case ParityForced1:
mbed_official 489:119543c9f674 171 obj->parity = UART_PARITY_EVEN;
mbed_official 174:8bb9f3a33240 172 break;
mbed_official 174:8bb9f3a33240 173 default: // ParityNone
mbed_official 489:119543c9f674 174 obj->parity = UART_PARITY_NONE;
mbed_official 174:8bb9f3a33240 175 break;
mbed_official 52:a51c77007319 176 }
mbed_official 174:8bb9f3a33240 177
mbed_official 52:a51c77007319 178 if (stop_bits == 2) {
mbed_official 489:119543c9f674 179 obj->stopbits = UART_STOPBITS_2;
mbed_official 174:8bb9f3a33240 180 } else {
mbed_official 489:119543c9f674 181 obj->stopbits = UART_STOPBITS_1;
mbed_official 52:a51c77007319 182 }
mbed_official 52:a51c77007319 183
mbed_official 489:119543c9f674 184 init_uart(obj);
mbed_official 52:a51c77007319 185 }
mbed_official 52:a51c77007319 186
mbed_official 52:a51c77007319 187 /******************************************************************************
mbed_official 52:a51c77007319 188 * INTERRUPTS HANDLING
mbed_official 52:a51c77007319 189 ******************************************************************************/
mbed_official 52:a51c77007319 190
mbed_official 489:119543c9f674 191 static void uart_irq(UARTName name, int id)
mbed_official 402:09075a3b15e3 192 {
mbed_official 489:119543c9f674 193 UartHandle.Instance = (USART_TypeDef *)name;
mbed_official 55:3b765ca737a5 194 if (serial_irq_ids[id] != 0) {
mbed_official 489:119543c9f674 195 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
mbed_official 55:3b765ca737a5 196 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 489:119543c9f674 197 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TC);
mbed_official 52:a51c77007319 198 }
mbed_official 489:119543c9f674 199 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
mbed_official 55:3b765ca737a5 200 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 489:119543c9f674 201 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
mbed_official 52:a51c77007319 202 }
mbed_official 52:a51c77007319 203 }
mbed_official 52:a51c77007319 204 }
mbed_official 52:a51c77007319 205
mbed_official 402:09075a3b15e3 206 static void uart1_irq(void)
mbed_official 402:09075a3b15e3 207 {
mbed_official 489:119543c9f674 208 uart_irq(UART_1, 0);
mbed_official 167:d5744491c362 209 }
mbed_official 489:119543c9f674 210
mbed_official 402:09075a3b15e3 211 static void uart2_irq(void)
mbed_official 402:09075a3b15e3 212 {
mbed_official 489:119543c9f674 213 uart_irq(UART_2, 1);
mbed_official 167:d5744491c362 214 }
mbed_official 489:119543c9f674 215
mbed_official 402:09075a3b15e3 216 static void uart3_irq(void)
mbed_official 402:09075a3b15e3 217 {
mbed_official 489:119543c9f674 218 uart_irq(UART_3, 2);
mbed_official 167:d5744491c362 219 }
mbed_official 52:a51c77007319 220
mbed_official 402:09075a3b15e3 221 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
mbed_official 402:09075a3b15e3 222 {
mbed_official 52:a51c77007319 223 irq_handler = handler;
mbed_official 52:a51c77007319 224 serial_irq_ids[obj->index] = id;
mbed_official 52:a51c77007319 225 }
mbed_official 52:a51c77007319 226
mbed_official 402:09075a3b15e3 227 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
mbed_official 402:09075a3b15e3 228 {
mbed_official 52:a51c77007319 229 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 52:a51c77007319 230 uint32_t vector = 0;
mbed_official 489:119543c9f674 231
mbed_official 489:119543c9f674 232 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 233
mbed_official 52:a51c77007319 234 if (obj->uart == UART_1) {
mbed_official 174:8bb9f3a33240 235 irq_n = USART1_IRQn;
mbed_official 174:8bb9f3a33240 236 vector = (uint32_t)&uart1_irq;
mbed_official 52:a51c77007319 237 }
mbed_official 174:8bb9f3a33240 238
mbed_official 52:a51c77007319 239 if (obj->uart == UART_2) {
mbed_official 174:8bb9f3a33240 240 irq_n = USART2_IRQn;
mbed_official 174:8bb9f3a33240 241 vector = (uint32_t)&uart2_irq;
mbed_official 52:a51c77007319 242 }
mbed_official 167:d5744491c362 243
mbed_official 167:d5744491c362 244 if (obj->uart == UART_3) {
mbed_official 174:8bb9f3a33240 245 irq_n = USART3_IRQn;
mbed_official 174:8bb9f3a33240 246 vector = (uint32_t)&uart3_irq;
mbed_official 167:d5744491c362 247 }
mbed_official 174:8bb9f3a33240 248
mbed_official 52:a51c77007319 249 if (enable) {
mbed_official 174:8bb9f3a33240 250
mbed_official 52:a51c77007319 251 if (irq == RxIrq) {
mbed_official 489:119543c9f674 252 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 174:8bb9f3a33240 253 } else { // TxIrq
mbed_official 489:119543c9f674 254 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 174:8bb9f3a33240 255 }
mbed_official 174:8bb9f3a33240 256
mbed_official 52:a51c77007319 257 NVIC_SetVector(irq_n, vector);
mbed_official 52:a51c77007319 258 NVIC_EnableIRQ(irq_n);
mbed_official 174:8bb9f3a33240 259
mbed_official 52:a51c77007319 260 } else { // disable
mbed_official 174:8bb9f3a33240 261
mbed_official 52:a51c77007319 262 int all_disabled = 0;
mbed_official 174:8bb9f3a33240 263
mbed_official 52:a51c77007319 264 if (irq == RxIrq) {
mbed_official 489:119543c9f674 265 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 52:a51c77007319 266 // Check if TxIrq is disabled too
mbed_official 489:119543c9f674 267 if ((UartHandle.Instance->CR1 & USART_CR1_TCIE) == 0) all_disabled = 1;
mbed_official 174:8bb9f3a33240 268 } else { // TxIrq
mbed_official 489:119543c9f674 269 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 52:a51c77007319 270 // Check if RxIrq is disabled too
mbed_official 489:119543c9f674 271 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 52:a51c77007319 272 }
mbed_official 174:8bb9f3a33240 273
mbed_official 52:a51c77007319 274 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 174:8bb9f3a33240 275
mbed_official 174:8bb9f3a33240 276 }
mbed_official 52:a51c77007319 277 }
mbed_official 52:a51c77007319 278
mbed_official 52:a51c77007319 279 /******************************************************************************
mbed_official 52:a51c77007319 280 * READ/WRITE
mbed_official 52:a51c77007319 281 ******************************************************************************/
mbed_official 52:a51c77007319 282
mbed_official 402:09075a3b15e3 283 int serial_getc(serial_t *obj)
mbed_official 402:09075a3b15e3 284 {
mbed_official 489:119543c9f674 285 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 286 while (!serial_readable(obj));
mbed_official 489:119543c9f674 287 if (obj->databits == UART_WORDLENGTH_8B) {
mbed_official 489:119543c9f674 288 return (int)(uart->DR & (uint8_t)0xFF);
mbed_official 489:119543c9f674 289 } else {
mbed_official 489:119543c9f674 290 return (int)(uart->DR & (uint16_t)0x1FF);
mbed_official 489:119543c9f674 291 }
mbed_official 52:a51c77007319 292 }
mbed_official 52:a51c77007319 293
mbed_official 402:09075a3b15e3 294 void serial_putc(serial_t *obj, int c)
mbed_official 402:09075a3b15e3 295 {
mbed_official 489:119543c9f674 296 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 297 while (!serial_writable(obj));
mbed_official 489:119543c9f674 298 if (obj->databits == UART_WORDLENGTH_8B) {
mbed_official 489:119543c9f674 299 uart->DR = (uint8_t)(c & (uint8_t)0xFF);
mbed_official 489:119543c9f674 300 } else {
mbed_official 489:119543c9f674 301 uart->DR = (uint16_t)(c & (uint16_t)0x1FF);
mbed_official 489:119543c9f674 302 }
mbed_official 52:a51c77007319 303 }
mbed_official 52:a51c77007319 304
mbed_official 402:09075a3b15e3 305 int serial_readable(serial_t *obj)
mbed_official 402:09075a3b15e3 306 {
mbed_official 52:a51c77007319 307 int status;
mbed_official 489:119543c9f674 308 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 309 // Check if data is received
mbed_official 489:119543c9f674 310 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 52:a51c77007319 311 return status;
mbed_official 52:a51c77007319 312 }
mbed_official 52:a51c77007319 313
mbed_official 402:09075a3b15e3 314 int serial_writable(serial_t *obj)
mbed_official 402:09075a3b15e3 315 {
mbed_official 52:a51c77007319 316 int status;
mbed_official 489:119543c9f674 317 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 318 // Check if data is transmitted
mbed_official 489:119543c9f674 319 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 52:a51c77007319 320 return status;
mbed_official 52:a51c77007319 321 }
mbed_official 52:a51c77007319 322
mbed_official 402:09075a3b15e3 323 void serial_clear(serial_t *obj)
mbed_official 402:09075a3b15e3 324 {
mbed_official 489:119543c9f674 325 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 489:119543c9f674 326 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TXE);
mbed_official 489:119543c9f674 327 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
mbed_official 52:a51c77007319 328 }
mbed_official 52:a51c77007319 329
mbed_official 402:09075a3b15e3 330 void serial_pinout_tx(PinName tx)
mbed_official 402:09075a3b15e3 331 {
mbed_official 52:a51c77007319 332 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 52:a51c77007319 333 }
mbed_official 52:a51c77007319 334
mbed_official 402:09075a3b15e3 335 void serial_break_set(serial_t *obj)
mbed_official 402:09075a3b15e3 336 {
mbed_official 489:119543c9f674 337 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 489:119543c9f674 338 HAL_LIN_SendBreak(&UartHandle);
mbed_official 52:a51c77007319 339 }
mbed_official 52:a51c77007319 340
mbed_official 402:09075a3b15e3 341 void serial_break_clear(serial_t *obj)
mbed_official 402:09075a3b15e3 342 {
mbed_official 52:a51c77007319 343 }
mbed_official 174:8bb9f3a33240 344
mbed_official 174:8bb9f3a33240 345 #endif