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@323:9e901b0a5aa1, 2014-09-13 (annotated)

Committer:
shaoziyang
Date:
Sat Sep 13 14:25:46 2014 +0000
Revision:
323:9e901b0a5aa1
Parent:
242:7074e42da0b2 
test with CLOCK_SETUP = 0

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 242:7074e42da0b2 76
mbed_official 242:7074e42da0b2 77 if (obj->pin_rx == NC) {
mbed_official 242:7074e42da0b2 78 UartHandle.Init.Mode = UART_MODE_TX;
mbed_official 242:7074e42da0b2 79 } else if (obj->pin_tx == NC) {
mbed_official 242:7074e42da0b2 80 UartHandle.Init.Mode = UART_MODE_RX;
mbed_official 242:7074e42da0b2 81 } else {
mbed_official 242:7074e42da0b2 82 UartHandle.Init.Mode = UART_MODE_TX_RX;
mbed_official 242:7074e42da0b2 83 }
mbed_official 172:2f4f8c56b261 84
mbed_official 172:2f4f8c56b261 85 HAL_UART_Init(&UartHandle);
mbed_official 87:085cde657901 86 }
mbed_official 87:085cde657901 87
mbed_official 172:2f4f8c56b261 88 void serial_init(serial_t *obj, PinName tx, PinName rx) {
mbed_official 87:085cde657901 89 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 87:085cde657901 90 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 87:085cde657901 91 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 172:2f4f8c56b261 92
mbed_official 87:085cde657901 93 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 87:085cde657901 94 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 227:7bd0639b8911 95 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 87:085cde657901 96
mbed_official 87:085cde657901 97 // Enable USART clock
mbed_official 87:085cde657901 98 if (obj->uart == UART_1) {
mbed_official 87:085cde657901 99 __USART1_CLK_ENABLE();
mbed_official 215:83cf97a28428 100 obj->index = 0;
mbed_official 87:085cde657901 101 }
mbed_official 87:085cde657901 102 if (obj->uart == UART_2) {
mbed_official 87:085cde657901 103 __USART2_CLK_ENABLE();
mbed_official 215:83cf97a28428 104 obj->index = 1;
mbed_official 87:085cde657901 105 }
mbed_official 125:23cc3068a9e4 106 if (obj->uart == UART_6) {
mbed_official 125:23cc3068a9e4 107 __USART6_CLK_ENABLE();
mbed_official 215:83cf97a28428 108 obj->index = 2;
mbed_official 115:4f0cb9cdc478 109 }
mbed_official 172:2f4f8c56b261 110
mbed_official 87:085cde657901 111 // Configure the UART pins
mbed_official 87:085cde657901 112 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 87:085cde657901 113 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 87:085cde657901 114 pin_mode(tx, PullUp);
mbed_official 87:085cde657901 115 pin_mode(rx, PullUp);
mbed_official 172:2f4f8c56b261 116
mbed_official 87:085cde657901 117 // Configure UART
mbed_official 87:085cde657901 118 obj->baudrate = 9600;
mbed_official 87:085cde657901 119 obj->databits = UART_WORDLENGTH_8B;
mbed_official 87:085cde657901 120 obj->stopbits = UART_STOPBITS_1;
mbed_official 172:2f4f8c56b261 121 obj->parity = UART_PARITY_NONE;
mbed_official 87:085cde657901 122
mbed_official 215:83cf97a28428 123 obj->pin_tx = tx;
mbed_official 215:83cf97a28428 124 obj->pin_rx = rx;
mbed_official 87:085cde657901 125
mbed_official 215:83cf97a28428 126 init_uart(obj);
mbed_official 172:2f4f8c56b261 127
mbed_official 87:085cde657901 128 // For stdio management
mbed_official 87:085cde657901 129 if (obj->uart == STDIO_UART) {
mbed_official 87:085cde657901 130 stdio_uart_inited = 1;
mbed_official 87:085cde657901 131 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 87:085cde657901 132 }
mbed_official 172:2f4f8c56b261 133
mbed_official 87:085cde657901 134 }
mbed_official 87:085cde657901 135
mbed_official 87:085cde657901 136 void serial_free(serial_t *obj) {
mbed_official 215:83cf97a28428 137 // Reset UART and disable clock
mbed_official 215:83cf97a28428 138 if (obj->uart == UART_1) {
mbed_official 215:83cf97a28428 139 __USART1_FORCE_RESET();
mbed_official 215:83cf97a28428 140 __USART1_RELEASE_RESET();
mbed_official 215:83cf97a28428 141 __USART1_CLK_DISABLE();
mbed_official 215:83cf97a28428 142 }
mbed_official 215:83cf97a28428 143 if (obj->uart == UART_2) {
mbed_official 215:83cf97a28428 144 __USART2_FORCE_RESET();
mbed_official 215:83cf97a28428 145 __USART2_RELEASE_RESET();
mbed_official 215:83cf97a28428 146 __USART2_CLK_DISABLE();
mbed_official 215:83cf97a28428 147 }
mbed_official 215:83cf97a28428 148 if (obj->uart == UART_6) {
mbed_official 215:83cf97a28428 149 __USART6_FORCE_RESET();
mbed_official 215:83cf97a28428 150 __USART6_RELEASE_RESET();
mbed_official 215:83cf97a28428 151 __USART6_CLK_DISABLE();
mbed_official 215:83cf97a28428 152 }
mbed_official 215:83cf97a28428 153
mbed_official 215:83cf97a28428 154 // Configure GPIOs
mbed_official 215:83cf97a28428 155 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 215:83cf97a28428 156 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 215:83cf97a28428 157
mbed_official 87:085cde657901 158 serial_irq_ids[obj->index] = 0;
mbed_official 87:085cde657901 159 }
mbed_official 87:085cde657901 160
mbed_official 87:085cde657901 161 void serial_baud(serial_t *obj, int baudrate) {
mbed_official 87:085cde657901 162 obj->baudrate = baudrate;
mbed_official 87:085cde657901 163 init_uart(obj);
mbed_official 87:085cde657901 164 }
mbed_official 87:085cde657901 165
mbed_official 87:085cde657901 166 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
mbed_official 242:7074e42da0b2 167 if (data_bits == 9) {
mbed_official 242:7074e42da0b2 168 obj->databits = UART_WORDLENGTH_9B;
mbed_official 242:7074e42da0b2 169 } else {
mbed_official 87:085cde657901 170 obj->databits = UART_WORDLENGTH_8B;
mbed_official 87:085cde657901 171 }
mbed_official 87:085cde657901 172
mbed_official 87:085cde657901 173 switch (parity) {
mbed_official 172:2f4f8c56b261 174 case ParityOdd:
mbed_official 172:2f4f8c56b261 175 case ParityForced0:
mbed_official 172:2f4f8c56b261 176 obj->parity = UART_PARITY_ODD;
mbed_official 172:2f4f8c56b261 177 break;
mbed_official 172:2f4f8c56b261 178 case ParityEven:
mbed_official 172:2f4f8c56b261 179 case ParityForced1:
mbed_official 172:2f4f8c56b261 180 obj->parity = UART_PARITY_EVEN;
mbed_official 172:2f4f8c56b261 181 break;
mbed_official 172:2f4f8c56b261 182 default: // ParityNone
mbed_official 172:2f4f8c56b261 183 obj->parity = UART_PARITY_NONE;
mbed_official 172:2f4f8c56b261 184 break;
mbed_official 87:085cde657901 185 }
mbed_official 172:2f4f8c56b261 186
mbed_official 87:085cde657901 187 if (stop_bits == 2) {
mbed_official 87:085cde657901 188 obj->stopbits = UART_STOPBITS_2;
mbed_official 172:2f4f8c56b261 189 } else {
mbed_official 87:085cde657901 190 obj->stopbits = UART_STOPBITS_1;
mbed_official 87:085cde657901 191 }
mbed_official 87:085cde657901 192
mbed_official 87:085cde657901 193 init_uart(obj);
mbed_official 87:085cde657901 194 }
mbed_official 87:085cde657901 195
mbed_official 87:085cde657901 196 /******************************************************************************
mbed_official 87:085cde657901 197 * INTERRUPTS HANDLING
mbed_official 87:085cde657901 198 ******************************************************************************/
mbed_official 87:085cde657901 199
mbed_official 87:085cde657901 200 static void uart_irq(UARTName name, int id) {
mbed_official 87:085cde657901 201 UartHandle.Instance = (USART_TypeDef *)name;
mbed_official 87:085cde657901 202 if (serial_irq_ids[id] != 0) {
mbed_official 87:085cde657901 203 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
mbed_official 87:085cde657901 204 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 87:085cde657901 205 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TC);
mbed_official 87:085cde657901 206 }
mbed_official 87:085cde657901 207 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
mbed_official 87:085cde657901 208 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 87:085cde657901 209 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
mbed_official 87:085cde657901 210 }
mbed_official 87:085cde657901 211 }
mbed_official 87:085cde657901 212 }
mbed_official 87:085cde657901 213
mbed_official 172:2f4f8c56b261 214 static void uart1_irq(void) {
mbed_official 172:2f4f8c56b261 215 uart_irq(UART_1, 0);
mbed_official 172:2f4f8c56b261 216 }
mbed_official 172:2f4f8c56b261 217 static void uart2_irq(void) {
mbed_official 172:2f4f8c56b261 218 uart_irq(UART_2, 1);
mbed_official 172:2f4f8c56b261 219 }
mbed_official 172:2f4f8c56b261 220 static void uart6_irq(void) {
mbed_official 172:2f4f8c56b261 221 uart_irq(UART_6, 2);
mbed_official 172:2f4f8c56b261 222 }
mbed_official 87:085cde657901 223
mbed_official 87:085cde657901 224 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
mbed_official 87:085cde657901 225 irq_handler = handler;
mbed_official 87:085cde657901 226 serial_irq_ids[obj->index] = id;
mbed_official 87:085cde657901 227 }
mbed_official 87:085cde657901 228
mbed_official 87:085cde657901 229 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
mbed_official 87:085cde657901 230 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 87:085cde657901 231 uint32_t vector = 0;
mbed_official 172:2f4f8c56b261 232
mbed_official 87:085cde657901 233 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 172:2f4f8c56b261 234
mbed_official 87:085cde657901 235 if (obj->uart == UART_1) {
mbed_official 172:2f4f8c56b261 236 irq_n = USART1_IRQn;
mbed_official 172:2f4f8c56b261 237 vector = (uint32_t)&uart1_irq;
mbed_official 87:085cde657901 238 }
mbed_official 172:2f4f8c56b261 239
mbed_official 87:085cde657901 240 if (obj->uart == UART_2) {
mbed_official 172:2f4f8c56b261 241 irq_n = USART2_IRQn;
mbed_official 172:2f4f8c56b261 242 vector = (uint32_t)&uart2_irq;
mbed_official 87:085cde657901 243 }
mbed_official 125:23cc3068a9e4 244
mbed_official 125:23cc3068a9e4 245 if (obj->uart == UART_6) {
mbed_official 172:2f4f8c56b261 246 irq_n = USART6_IRQn;
mbed_official 172:2f4f8c56b261 247 vector = (uint32_t)&uart6_irq;
mbed_official 125:23cc3068a9e4 248 }
mbed_official 172:2f4f8c56b261 249
mbed_official 87:085cde657901 250 if (enable) {
mbed_official 172:2f4f8c56b261 251
mbed_official 87:085cde657901 252 if (irq == RxIrq) {
mbed_official 87:085cde657901 253 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 172:2f4f8c56b261 254 } else { // TxIrq
mbed_official 87:085cde657901 255 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 172:2f4f8c56b261 256 }
mbed_official 172:2f4f8c56b261 257
mbed_official 87:085cde657901 258 NVIC_SetVector(irq_n, vector);
mbed_official 87:085cde657901 259 NVIC_EnableIRQ(irq_n);
mbed_official 172:2f4f8c56b261 260
mbed_official 87:085cde657901 261 } else { // disable
mbed_official 172:2f4f8c56b261 262
mbed_official 87:085cde657901 263 int all_disabled = 0;
mbed_official 172:2f4f8c56b261 264
mbed_official 87:085cde657901 265 if (irq == RxIrq) {
mbed_official 172:2f4f8c56b261 266 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 87:085cde657901 267 // Check if TxIrq is disabled too
mbed_official 87:085cde657901 268 if ((UartHandle.Instance->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 172:2f4f8c56b261 269 } else { // TxIrq
mbed_official 87:085cde657901 270 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TXE);
mbed_official 87:085cde657901 271 // Check if RxIrq is disabled too
mbed_official 172:2f4f8c56b261 272 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 87:085cde657901 273 }
mbed_official 172:2f4f8c56b261 274
mbed_official 87:085cde657901 275 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 172:2f4f8c56b261 276
mbed_official 172:2f4f8c56b261 277 }
mbed_official 87:085cde657901 278 }
mbed_official 87:085cde657901 279
mbed_official 87:085cde657901 280 /******************************************************************************
mbed_official 87:085cde657901 281 * READ/WRITE
mbed_official 87:085cde657901 282 ******************************************************************************/
mbed_official 87:085cde657901 283
mbed_official 87:085cde657901 284 int serial_getc(serial_t *obj) {
mbed_official 87:085cde657901 285 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 87:085cde657901 286 while (!serial_readable(obj));
mbed_official 87:085cde657901 287 return (int)(uart->DR & 0x1FF);
mbed_official 87:085cde657901 288 }
mbed_official 87:085cde657901 289
mbed_official 87:085cde657901 290 void serial_putc(serial_t *obj, int c) {
mbed_official 87:085cde657901 291 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 87:085cde657901 292 while (!serial_writable(obj));
mbed_official 87:085cde657901 293 uart->DR = (uint32_t)(c & 0x1FF);
mbed_official 87:085cde657901 294 }
mbed_official 87:085cde657901 295
mbed_official 87:085cde657901 296 int serial_readable(serial_t *obj) {
mbed_official 87:085cde657901 297 int status;
mbed_official 87:085cde657901 298 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 87:085cde657901 299 // Check if data is received
mbed_official 87:085cde657901 300 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 87:085cde657901 301 return status;
mbed_official 87:085cde657901 302 }
mbed_official 87:085cde657901 303
mbed_official 87:085cde657901 304 int serial_writable(serial_t *obj) {
mbed_official 87:085cde657901 305 int status;
mbed_official 87:085cde657901 306 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 87:085cde657901 307 // Check if data is transmitted
mbed_official 87:085cde657901 308 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 87:085cde657901 309 return status;
mbed_official 87:085cde657901 310 }
mbed_official 87:085cde657901 311
mbed_official 87:085cde657901 312 void serial_clear(serial_t *obj) {
mbed_official 87:085cde657901 313 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 87:085cde657901 314 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TXE);
mbed_official 87:085cde657901 315 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
mbed_official 87:085cde657901 316 }
mbed_official 87:085cde657901 317
mbed_official 87:085cde657901 318 void serial_pinout_tx(PinName tx) {
mbed_official 87:085cde657901 319 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 87:085cde657901 320 }
mbed_official 87:085cde657901 321
mbed_official 87:085cde657901 322 void serial_break_set(serial_t *obj) {
mbed_official 87:085cde657901 323 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 87:085cde657901 324 HAL_LIN_SendBreak(&UartHandle);
mbed_official 87:085cde657901 325 }
mbed_official 87:085cde657901 326
mbed_official 87:085cde657901 327 void serial_break_clear(serial_t *obj) {
mbed_official 87:085cde657901 328 }
mbed_official 172:2f4f8c56b261 329
mbed_official 172:2f4f8c56b261 330 #endif