shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F401RE/serial_api.c@227:7bd0639b8911, 2014-06-11 (annotated)

Committer:
mbed_official
Date:
Wed Jun 11 16:00:09 2014 +0100
Revision:
227:7bd0639b8911
Parent:
215:83cf97a28428
Child:
242:7074e42da0b2
Synchronized with git revision d58d532ebc0e0a96f4fffb8edefc082b71b964af



Full URL: https://github.com/mbedmicro/mbed/commit/d58d532ebc0e0a96f4fffb8edefc082b71b964af/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 87:085cde657901 1 /* mbed Microcontroller Library
mbed_official 87:085cde657901 2 *******************************************************************************
mbed_official 87:085cde657901 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 87:085cde657901 4 * All rights reserved.
mbed_official 87:085cde657901 5 *
mbed_official 87:085cde657901 6 * Redistribution and use in source and binary forms, with or without
mbed_official 87:085cde657901 7 * modification, are permitted provided that the following conditions are met:
mbed_official 87:085cde657901 8 *
mbed_official 87:085cde657901 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 87:085cde657901 10 * this list of conditions and the following disclaimer.
mbed_official 87:085cde657901 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 87:085cde657901 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 87:085cde657901 13 * and/or other materials provided with the distribution.
mbed_official 87:085cde657901 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 87:085cde657901 15 * may be used to endorse or promote products derived from this software
mbed_official 87:085cde657901 16 * without specific prior written permission.
mbed_official 87:085cde657901 17 *
mbed_official 87:085cde657901 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 87:085cde657901 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 87:085cde657901 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 87:085cde657901 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 87:085cde657901 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 87:085cde657901 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 87:085cde657901 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 87:085cde657901 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 87:085cde657901 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 87:085cde657901 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 87:085cde657901 28 *******************************************************************************
mbed_official 87:085cde657901 29 */
mbed_official 227:7bd0639b8911 30 #include "mbed_assert.h"
mbed_official 87:085cde657901 31 #include "serial_api.h"
mbed_official 172:2f4f8c56b261 32
mbed_official 172:2f4f8c56b261 33 #if DEVICE_SERIAL
mbed_official 172:2f4f8c56b261 34
mbed_official 87:085cde657901 35 #include "cmsis.h"
mbed_official 87:085cde657901 36 #include "pinmap.h"
mbed_official 87:085cde657901 37 #include <string.h>
mbed_official 87:085cde657901 38
mbed_official 87:085cde657901 39 static const PinMap PinMap_UART_TX[] = {
mbed_official 125:23cc3068a9e4 40 {PA_2, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
mbed_official 87:085cde657901 41 {PA_9, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 125:23cc3068a9e4 42 {PA_11, UART_6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
mbed_official 125:23cc3068a9e4 43 {PB_6, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 125:23cc3068a9e4 44 {PC_6, UART_6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
mbed_official 87:085cde657901 45 {NC, NC, 0}
mbed_official 87:085cde657901 46 };
mbed_official 87:085cde657901 47
mbed_official 87:085cde657901 48 static const PinMap PinMap_UART_RX[] = {
mbed_official 125:23cc3068a9e4 49 {PA_3, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
mbed_official 87:085cde657901 50 {PA_10, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 125:23cc3068a9e4 51 {PA_12, UART_6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
mbed_official 125:23cc3068a9e4 52 {PB_7, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 125:23cc3068a9e4 53 {PC_7, UART_6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
mbed_official 87:085cde657901 54 {NC, NC, 0}
mbed_official 87:085cde657901 55 };
mbed_official 87:085cde657901 56
mbed_official 115:4f0cb9cdc478 57 #define UART_NUM (3)
mbed_official 87:085cde657901 58
mbed_official 172:2f4f8c56b261 59 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0};
mbed_official 87:085cde657901 60
mbed_official 87:085cde657901 61 static uart_irq_handler irq_handler;
mbed_official 87:085cde657901 62
mbed_official 87:085cde657901 63 UART_HandleTypeDef UartHandle;
mbed_official 172:2f4f8c56b261 64
mbed_official 87:085cde657901 65 int stdio_uart_inited = 0;
mbed_official 87:085cde657901 66 serial_t stdio_uart;
mbed_official 87:085cde657901 67
mbed_official 87:085cde657901 68 static void init_uart(serial_t *obj) {
mbed_official 87:085cde657901 69 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 172:2f4f8c56b261 70
mbed_official 87:085cde657901 71 UartHandle.Init.BaudRate = obj->baudrate;
mbed_official 87:085cde657901 72 UartHandle.Init.WordLength = obj->databits;
mbed_official 87:085cde657901 73 UartHandle.Init.StopBits = obj->stopbits;
mbed_official 87:085cde657901 74 UartHandle.Init.Parity = obj->parity;
mbed_official 87:085cde657901 75 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
mbed_official 87:085cde657901 76 UartHandle.Init.Mode = UART_MODE_TX_RX;
mbed_official 172:2f4f8c56b261 77
mbed_official 172:2f4f8c56b261 78 HAL_UART_Init(&UartHandle);
mbed_official 87:085cde657901 79 }
mbed_official 87:085cde657901 80
mbed_official 172:2f4f8c56b261 81 void serial_init(serial_t *obj, PinName tx, PinName rx) {
mbed_official 87:085cde657901 82 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 87:085cde657901 83 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 87:085cde657901 84 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 172:2f4f8c56b261 85
mbed_official 87:085cde657901 86 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 87:085cde657901 87 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 227:7bd0639b8911 88 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 87:085cde657901 89
mbed_official 87:085cde657901 90 // Enable USART clock
mbed_official 87:085cde657901 91 if (obj->uart == UART_1) {
mbed_official 87:085cde657901 92 __USART1_CLK_ENABLE();
mbed_official 215:83cf97a28428 93 obj->index = 0;
mbed_official 87:085cde657901 94 }
mbed_official 87:085cde657901 95 if (obj->uart == UART_2) {
mbed_official 87:085cde657901 96 __USART2_CLK_ENABLE();
mbed_official 215:83cf97a28428 97 obj->index = 1;
mbed_official 87:085cde657901 98 }
mbed_official 125:23cc3068a9e4 99 if (obj->uart == UART_6) {
mbed_official 125:23cc3068a9e4 100 __USART6_CLK_ENABLE();
mbed_official 215:83cf97a28428 101 obj->index = 2;
mbed_official 115:4f0cb9cdc478 102 }
mbed_official 172:2f4f8c56b261 103
mbed_official 87:085cde657901 104 // Configure the UART pins
mbed_official 87:085cde657901 105 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 87:085cde657901 106 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 87:085cde657901 107 pin_mode(tx, PullUp);
mbed_official 87:085cde657901 108 pin_mode(rx, PullUp);
mbed_official 172:2f4f8c56b261 109
mbed_official 87:085cde657901 110 // Configure UART
mbed_official 87:085cde657901 111 obj->baudrate = 9600;
mbed_official 87:085cde657901 112 obj->databits = UART_WORDLENGTH_8B;
mbed_official 87:085cde657901 113 obj->stopbits = UART_STOPBITS_1;
mbed_official 172:2f4f8c56b261 114 obj->parity = UART_PARITY_NONE;
mbed_official 87:085cde657901 115
mbed_official 215:83cf97a28428 116 obj->pin_tx = tx;
mbed_official 215:83cf97a28428 117 obj->pin_rx = rx;
mbed_official 87:085cde657901 118
mbed_official 215:83cf97a28428 119 init_uart(obj);
mbed_official 172:2f4f8c56b261 120
mbed_official 87:085cde657901 121 // For stdio management
mbed_official 87:085cde657901 122 if (obj->uart == STDIO_UART) {
mbed_official 87:085cde657901 123 stdio_uart_inited = 1;
mbed_official 87:085cde657901 124 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 87:085cde657901 125 }
mbed_official 172:2f4f8c56b261 126
mbed_official 87:085cde657901 127 }
mbed_official 87:085cde657901 128
mbed_official 87:085cde657901 129 void serial_free(serial_t *obj) {
mbed_official 215:83cf97a28428 130 // Reset UART and disable clock
mbed_official 215:83cf97a28428 131 if (obj->uart == UART_1) {
mbed_official 215:83cf97a28428 132 __USART1_FORCE_RESET();
mbed_official 215:83cf97a28428 133 __USART1_RELEASE_RESET();
mbed_official 215:83cf97a28428 134 __USART1_CLK_DISABLE();
mbed_official 215:83cf97a28428 135 }
mbed_official 215:83cf97a28428 136 if (obj->uart == UART_2) {
mbed_official 215:83cf97a28428 137 __USART2_FORCE_RESET();
mbed_official 215:83cf97a28428 138 __USART2_RELEASE_RESET();
mbed_official 215:83cf97a28428 139 __USART2_CLK_DISABLE();
mbed_official 215:83cf97a28428 140 }
mbed_official 215:83cf97a28428 141 if (obj->uart == UART_6) {
mbed_official 215:83cf97a28428 142 __USART6_FORCE_RESET();
mbed_official 215:83cf97a28428 143 __USART6_RELEASE_RESET();
mbed_official 215:83cf97a28428 144 __USART6_CLK_DISABLE();
mbed_official 215:83cf97a28428 145 }
mbed_official 215:83cf97a28428 146
mbed_official 215:83cf97a28428 147 // Configure GPIOs
mbed_official 215:83cf97a28428 148 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 215:83cf97a28428 149 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 215:83cf97a28428 150
mbed_official 87:085cde657901 151 serial_irq_ids[obj->index] = 0;
mbed_official 87:085cde657901 152 }
mbed_official 87:085cde657901 153
mbed_official 87:085cde657901 154 void serial_baud(serial_t *obj, int baudrate) {
mbed_official 87:085cde657901 155 obj->baudrate = baudrate;
mbed_official 87:085cde657901 156 init_uart(obj);
mbed_official 87:085cde657901 157 }
mbed_official 87:085cde657901 158
mbed_official 87:085cde657901 159 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
mbed_official 87:085cde657901 160 if (data_bits == 8) {
mbed_official 87:085cde657901 161 obj->databits = UART_WORDLENGTH_8B;
mbed_official 172:2f4f8c56b261 162 } else {
mbed_official 87:085cde657901 163 obj->databits = UART_WORDLENGTH_9B;
mbed_official 87:085cde657901 164 }
mbed_official 87:085cde657901 165
mbed_official 87:085cde657901 166 switch (parity) {
mbed_official 172:2f4f8c56b261 167 case ParityOdd:
mbed_official 172:2f4f8c56b261 168 case ParityForced0:
mbed_official 172:2f4f8c56b261 169 obj->parity = UART_PARITY_ODD;
mbed_official 172:2f4f8c56b261 170 break;
mbed_official 172:2f4f8c56b261 171 case ParityEven:
mbed_official 172:2f4f8c56b261 172 case ParityForced1:
mbed_official 172:2f4f8c56b261 173 obj->parity = UART_PARITY_EVEN;
mbed_official 172:2f4f8c56b261 174 break;
mbed_official 172:2f4f8c56b261 175 default: // ParityNone
mbed_official 172:2f4f8c56b261 176 obj->parity = UART_PARITY_NONE;
mbed_official 172:2f4f8c56b261 177 break;
mbed_official 87:085cde657901 178 }
mbed_official 172:2f4f8c56b261 179
mbed_official 87:085cde657901 180 if (stop_bits == 2) {
mbed_official 87:085cde657901 181 obj->stopbits = UART_STOPBITS_2;
mbed_official 172:2f4f8c56b261 182 } else {
mbed_official 87:085cde657901 183 obj->stopbits = UART_STOPBITS_1;
mbed_official 87:085cde657901 184 }
mbed_official 87:085cde657901 185
mbed_official 87:085cde657901 186 init_uart(obj);
mbed_official 87:085cde657901 187 }
mbed_official 87:085cde657901 188
mbed_official 87:085cde657901 189 /******************************************************************************
mbed_official 87:085cde657901 190 * INTERRUPTS HANDLING
mbed_official 87:085cde657901 191 ******************************************************************************/
mbed_official 87:085cde657901 192
mbed_official 87:085cde657901 193 static void uart_irq(UARTName name, int id) {
mbed_official 87:085cde657901 194 UartHandle.Instance = (USART_TypeDef *)name;
mbed_official 87:085cde657901 195 if (serial_irq_ids[id] != 0) {
mbed_official 87:085cde657901 196 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
mbed_official 87:085cde657901 197 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 87:085cde657901 198 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TC);
mbed_official 87:085cde657901 199 }
mbed_official 87:085cde657901 200 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
mbed_official 87:085cde657901 201 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 87:085cde657901 202 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
mbed_official 87:085cde657901 203 }
mbed_official 87:085cde657901 204 }
mbed_official 87:085cde657901 205 }
mbed_official 87:085cde657901 206
mbed_official 172:2f4f8c56b261 207 static void uart1_irq(void) {
mbed_official 172:2f4f8c56b261 208 uart_irq(UART_1, 0);
mbed_official 172:2f4f8c56b261 209 }
mbed_official 172:2f4f8c56b261 210 static void uart2_irq(void) {
mbed_official 172:2f4f8c56b261 211 uart_irq(UART_2, 1);
mbed_official 172:2f4f8c56b261 212 }
mbed_official 172:2f4f8c56b261 213 static void uart6_irq(void) {
mbed_official 172:2f4f8c56b261 214 uart_irq(UART_6, 2);
mbed_official 172:2f4f8c56b261 215 }
mbed_official 87:085cde657901 216
mbed_official 87:085cde657901 217 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
mbed_official 87:085cde657901 218 irq_handler = handler;
mbed_official 87:085cde657901 219 serial_irq_ids[obj->index] = id;
mbed_official 87:085cde657901 220 }
mbed_official 87:085cde657901 221
mbed_official 87:085cde657901 222 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
mbed_official 87:085cde657901 223 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 87:085cde657901 224 uint32_t vector = 0;
mbed_official 172:2f4f8c56b261 225
mbed_official 87:085cde657901 226 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 172:2f4f8c56b261 227
mbed_official 87:085cde657901 228 if (obj->uart == UART_1) {
mbed_official 172:2f4f8c56b261 229 irq_n = USART1_IRQn;
mbed_official 172:2f4f8c56b261 230 vector = (uint32_t)&uart1_irq;
mbed_official 87:085cde657901 231 }
mbed_official 172:2f4f8c56b261 232
mbed_official 87:085cde657901 233 if (obj->uart == UART_2) {
mbed_official 172:2f4f8c56b261 234 irq_n = USART2_IRQn;
mbed_official 172:2f4f8c56b261 235 vector = (uint32_t)&uart2_irq;
mbed_official 87:085cde657901 236 }
mbed_official 125:23cc3068a9e4 237
mbed_official 125:23cc3068a9e4 238 if (obj->uart == UART_6) {
mbed_official 172:2f4f8c56b261 239 irq_n = USART6_IRQn;
mbed_official 172:2f4f8c56b261 240 vector = (uint32_t)&uart6_irq;
mbed_official 125:23cc3068a9e4 241 }
mbed_official 172:2f4f8c56b261 242
mbed_official 87:085cde657901 243 if (enable) {
mbed_official 172:2f4f8c56b261 244
mbed_official 87:085cde657901 245 if (irq == RxIrq) {
mbed_official 87:085cde657901 246 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 172:2f4f8c56b261 247 } else { // TxIrq
mbed_official 87:085cde657901 248 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 172:2f4f8c56b261 249 }
mbed_official 172:2f4f8c56b261 250
mbed_official 87:085cde657901 251 NVIC_SetVector(irq_n, vector);
mbed_official 87:085cde657901 252 NVIC_EnableIRQ(irq_n);
mbed_official 172:2f4f8c56b261 253
mbed_official 87:085cde657901 254 } else { // disable
mbed_official 172:2f4f8c56b261 255
mbed_official 87:085cde657901 256 int all_disabled = 0;
mbed_official 172:2f4f8c56b261 257
mbed_official 87:085cde657901 258 if (irq == RxIrq) {
mbed_official 172:2f4f8c56b261 259 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 87:085cde657901 260 // Check if TxIrq is disabled too
mbed_official 87:085cde657901 261 if ((UartHandle.Instance->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 172:2f4f8c56b261 262 } else { // TxIrq
mbed_official 87:085cde657901 263 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TXE);
mbed_official 87:085cde657901 264 // Check if RxIrq is disabled too
mbed_official 172:2f4f8c56b261 265 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 87:085cde657901 266 }
mbed_official 172:2f4f8c56b261 267
mbed_official 87:085cde657901 268 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 172:2f4f8c56b261 269
mbed_official 172:2f4f8c56b261 270 }
mbed_official 87:085cde657901 271 }
mbed_official 87:085cde657901 272
mbed_official 87:085cde657901 273 /******************************************************************************
mbed_official 87:085cde657901 274 * READ/WRITE
mbed_official 87:085cde657901 275 ******************************************************************************/
mbed_official 87:085cde657901 276
mbed_official 87:085cde657901 277 int serial_getc(serial_t *obj) {
mbed_official 87:085cde657901 278 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 87:085cde657901 279 while (!serial_readable(obj));
mbed_official 87:085cde657901 280 return (int)(uart->DR & 0x1FF);
mbed_official 87:085cde657901 281 }
mbed_official 87:085cde657901 282
mbed_official 87:085cde657901 283 void serial_putc(serial_t *obj, int c) {
mbed_official 87:085cde657901 284 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 87:085cde657901 285 while (!serial_writable(obj));
mbed_official 87:085cde657901 286 uart->DR = (uint32_t)(c & 0x1FF);
mbed_official 87:085cde657901 287 }
mbed_official 87:085cde657901 288
mbed_official 87:085cde657901 289 int serial_readable(serial_t *obj) {
mbed_official 87:085cde657901 290 int status;
mbed_official 87:085cde657901 291 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 87:085cde657901 292 // Check if data is received
mbed_official 87:085cde657901 293 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 87:085cde657901 294 return status;
mbed_official 87:085cde657901 295 }
mbed_official 87:085cde657901 296
mbed_official 87:085cde657901 297 int serial_writable(serial_t *obj) {
mbed_official 87:085cde657901 298 int status;
mbed_official 87:085cde657901 299 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 87:085cde657901 300 // Check if data is transmitted
mbed_official 87:085cde657901 301 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 87:085cde657901 302 return status;
mbed_official 87:085cde657901 303 }
mbed_official 87:085cde657901 304
mbed_official 87:085cde657901 305 void serial_clear(serial_t *obj) {
mbed_official 87:085cde657901 306 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 87:085cde657901 307 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TXE);
mbed_official 87:085cde657901 308 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
mbed_official 87:085cde657901 309 }
mbed_official 87:085cde657901 310
mbed_official 87:085cde657901 311 void serial_pinout_tx(PinName tx) {
mbed_official 87:085cde657901 312 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 87:085cde657901 313 }
mbed_official 87:085cde657901 314
mbed_official 87:085cde657901 315 void serial_break_set(serial_t *obj) {
mbed_official 87:085cde657901 316 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 87:085cde657901 317 HAL_LIN_SendBreak(&UartHandle);
mbed_official 87:085cde657901 318 }
mbed_official 87:085cde657901 319
mbed_official 87:085cde657901 320 void serial_break_clear(serial_t *obj) {
mbed_official 87:085cde657901 321 }
mbed_official 172:2f4f8c56b261 322
mbed_official 172:2f4f8c56b261 323 #endif