long dao / mbed-src

Mbed for VNG board

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_DISCO_F429ZI/serial_api.c@428:4ddf7f7eabbb, 2014-12-08 (annotated)

Committer:
mbed_official
Date:
Mon Dec 08 07:30:07 2014 +0000
Revision:
428:4ddf7f7eabbb
Parent:
344:ed24f9926218 
Synchronized with git revision 3413e21e59b8b0d03c0addac95b1ead87f0b7965



Full URL: https://github.com/mbedmicro/mbed/commit/3413e21e59b8b0d03c0addac95b1ead87f0b7965/



Gitignore - Ignore cscope and vim swap files

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 340:28d1f895c6fe 1 /* mbed Microcontroller Library
mbed_official 340:28d1f895c6fe 2 *******************************************************************************
mbed_official 340:28d1f895c6fe 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 340:28d1f895c6fe 4 * All rights reserved.
mbed_official 340:28d1f895c6fe 5 *
mbed_official 340:28d1f895c6fe 6 * Redistribution and use in source and binary forms, with or without
mbed_official 340:28d1f895c6fe 7 * modification, are permitted provided that the following conditions are met:
mbed_official 340:28d1f895c6fe 8 *
mbed_official 340:28d1f895c6fe 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 340:28d1f895c6fe 10 * this list of conditions and the following disclaimer.
mbed_official 340:28d1f895c6fe 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 340:28d1f895c6fe 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 340:28d1f895c6fe 13 * and/or other materials provided with the distribution.
mbed_official 340:28d1f895c6fe 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 340:28d1f895c6fe 15 * may be used to endorse or promote products derived from this software
mbed_official 340:28d1f895c6fe 16 * without specific prior written permission.
mbed_official 340:28d1f895c6fe 17 *
mbed_official 340:28d1f895c6fe 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 340:28d1f895c6fe 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 340:28d1f895c6fe 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 340:28d1f895c6fe 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 340:28d1f895c6fe 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 340:28d1f895c6fe 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 340:28d1f895c6fe 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 340:28d1f895c6fe 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 340:28d1f895c6fe 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 340:28d1f895c6fe 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 340:28d1f895c6fe 28 *******************************************************************************
mbed_official 340:28d1f895c6fe 29 */
mbed_official 340:28d1f895c6fe 30 #include "mbed_assert.h"
mbed_official 340:28d1f895c6fe 31 #include "serial_api.h"
mbed_official 340:28d1f895c6fe 32
mbed_official 340:28d1f895c6fe 33 #if DEVICE_SERIAL
mbed_official 340:28d1f895c6fe 34
mbed_official 340:28d1f895c6fe 35 #include "cmsis.h"
mbed_official 340:28d1f895c6fe 36 #include "pinmap.h"
mbed_official 340:28d1f895c6fe 37 #include <string.h>
mbed_official 428:4ddf7f7eabbb 38 #include "PeripheralPins.h"
mbed_official 340:28d1f895c6fe 39
mbed_official 340:28d1f895c6fe 40 #define UART_NUM (3)
mbed_official 340:28d1f895c6fe 41
mbed_official 340:28d1f895c6fe 42 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0};
mbed_official 340:28d1f895c6fe 43
mbed_official 340:28d1f895c6fe 44 static uart_irq_handler irq_handler;
mbed_official 340:28d1f895c6fe 45
mbed_official 340:28d1f895c6fe 46 UART_HandleTypeDef UartHandle;
mbed_official 340:28d1f895c6fe 47
mbed_official 340:28d1f895c6fe 48 int stdio_uart_inited = 0;
mbed_official 340:28d1f895c6fe 49 serial_t stdio_uart;
mbed_official 340:28d1f895c6fe 50
mbed_official 340:28d1f895c6fe 51 static void init_uart(serial_t *obj)
mbed_official 340:28d1f895c6fe 52 {
mbed_official 340:28d1f895c6fe 53 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 340:28d1f895c6fe 54
mbed_official 340:28d1f895c6fe 55 UartHandle.Init.BaudRate = obj->baudrate;
mbed_official 340:28d1f895c6fe 56 UartHandle.Init.WordLength = obj->databits;
mbed_official 340:28d1f895c6fe 57 UartHandle.Init.StopBits = obj->stopbits;
mbed_official 340:28d1f895c6fe 58 UartHandle.Init.Parity = obj->parity;
mbed_official 340:28d1f895c6fe 59 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
mbed_official 340:28d1f895c6fe 60
mbed_official 340:28d1f895c6fe 61 if (obj->pin_rx == NC) {
mbed_official 340:28d1f895c6fe 62 UartHandle.Init.Mode = UART_MODE_TX;
mbed_official 340:28d1f895c6fe 63 } else if (obj->pin_tx == NC) {
mbed_official 340:28d1f895c6fe 64 UartHandle.Init.Mode = UART_MODE_RX;
mbed_official 340:28d1f895c6fe 65 } else {
mbed_official 340:28d1f895c6fe 66 UartHandle.Init.Mode = UART_MODE_TX_RX;
mbed_official 340:28d1f895c6fe 67 }
mbed_official 340:28d1f895c6fe 68
mbed_official 340:28d1f895c6fe 69 HAL_UART_Init(&UartHandle);
mbed_official 340:28d1f895c6fe 70 }
mbed_official 340:28d1f895c6fe 71
mbed_official 340:28d1f895c6fe 72 void serial_init(serial_t *obj, PinName tx, PinName rx)
mbed_official 340:28d1f895c6fe 73 {
mbed_official 340:28d1f895c6fe 74 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 340:28d1f895c6fe 75 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 340:28d1f895c6fe 76 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 340:28d1f895c6fe 77
mbed_official 340:28d1f895c6fe 78 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 340:28d1f895c6fe 79 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 340:28d1f895c6fe 80 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 340:28d1f895c6fe 81
mbed_official 340:28d1f895c6fe 82 // Enable USART clock
mbed_official 340:28d1f895c6fe 83 if (obj->uart == UART_1) {
mbed_official 340:28d1f895c6fe 84 __USART1_CLK_ENABLE();
mbed_official 340:28d1f895c6fe 85 obj->index = 0;
mbed_official 340:28d1f895c6fe 86 }
mbed_official 340:28d1f895c6fe 87 if (obj->uart == UART_2) {
mbed_official 340:28d1f895c6fe 88 __USART2_CLK_ENABLE();
mbed_official 340:28d1f895c6fe 89 obj->index = 1;
mbed_official 340:28d1f895c6fe 90 }
mbed_official 340:28d1f895c6fe 91 if (obj->uart == UART_6) {
mbed_official 340:28d1f895c6fe 92 __USART6_CLK_ENABLE();
mbed_official 340:28d1f895c6fe 93 obj->index = 2;
mbed_official 340:28d1f895c6fe 94 }
mbed_official 340:28d1f895c6fe 95
mbed_official 340:28d1f895c6fe 96 // Configure the UART pins
mbed_official 340:28d1f895c6fe 97 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 340:28d1f895c6fe 98 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 340:28d1f895c6fe 99 pin_mode(tx, PullUp);
mbed_official 340:28d1f895c6fe 100 pin_mode(rx, PullUp);
mbed_official 340:28d1f895c6fe 101
mbed_official 340:28d1f895c6fe 102 // Configure UART
mbed_official 340:28d1f895c6fe 103 obj->baudrate = 9600;
mbed_official 340:28d1f895c6fe 104 obj->databits = UART_WORDLENGTH_8B;
mbed_official 340:28d1f895c6fe 105 obj->stopbits = UART_STOPBITS_1;
mbed_official 340:28d1f895c6fe 106 obj->parity = UART_PARITY_NONE;
mbed_official 340:28d1f895c6fe 107
mbed_official 340:28d1f895c6fe 108 obj->pin_tx = tx;
mbed_official 340:28d1f895c6fe 109 obj->pin_rx = rx;
mbed_official 340:28d1f895c6fe 110
mbed_official 340:28d1f895c6fe 111 init_uart(obj);
mbed_official 340:28d1f895c6fe 112
mbed_official 340:28d1f895c6fe 113 // For stdio management
mbed_official 340:28d1f895c6fe 114 if (obj->uart == STDIO_UART) {
mbed_official 340:28d1f895c6fe 115 stdio_uart_inited = 1;
mbed_official 340:28d1f895c6fe 116 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 340:28d1f895c6fe 117 }
mbed_official 340:28d1f895c6fe 118 }
mbed_official 340:28d1f895c6fe 119
mbed_official 340:28d1f895c6fe 120 void serial_free(serial_t *obj)
mbed_official 340:28d1f895c6fe 121 {
mbed_official 340:28d1f895c6fe 122 // Reset UART and disable clock
mbed_official 340:28d1f895c6fe 123 if (obj->uart == UART_1) {
mbed_official 340:28d1f895c6fe 124 __USART1_FORCE_RESET();
mbed_official 340:28d1f895c6fe 125 __USART1_RELEASE_RESET();
mbed_official 340:28d1f895c6fe 126 __USART1_CLK_DISABLE();
mbed_official 340:28d1f895c6fe 127 }
mbed_official 340:28d1f895c6fe 128 if (obj->uart == UART_2) {
mbed_official 340:28d1f895c6fe 129 __USART2_FORCE_RESET();
mbed_official 340:28d1f895c6fe 130 __USART2_RELEASE_RESET();
mbed_official 340:28d1f895c6fe 131 __USART2_CLK_DISABLE();
mbed_official 340:28d1f895c6fe 132 }
mbed_official 340:28d1f895c6fe 133 if (obj->uart == UART_6) {
mbed_official 340:28d1f895c6fe 134 __USART6_FORCE_RESET();
mbed_official 340:28d1f895c6fe 135 __USART6_RELEASE_RESET();
mbed_official 340:28d1f895c6fe 136 __USART6_CLK_DISABLE();
mbed_official 340:28d1f895c6fe 137 }
mbed_official 340:28d1f895c6fe 138
mbed_official 340:28d1f895c6fe 139 // Configure GPIOs
mbed_official 340:28d1f895c6fe 140 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 340:28d1f895c6fe 141 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 340:28d1f895c6fe 142
mbed_official 340:28d1f895c6fe 143 serial_irq_ids[obj->index] = 0;
mbed_official 340:28d1f895c6fe 144 }
mbed_official 340:28d1f895c6fe 145
mbed_official 340:28d1f895c6fe 146 void serial_baud(serial_t *obj, int baudrate)
mbed_official 340:28d1f895c6fe 147 {
mbed_official 340:28d1f895c6fe 148 obj->baudrate = baudrate;
mbed_official 340:28d1f895c6fe 149 init_uart(obj);
mbed_official 340:28d1f895c6fe 150 }
mbed_official 340:28d1f895c6fe 151
mbed_official 340:28d1f895c6fe 152 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
mbed_official 340:28d1f895c6fe 153 {
mbed_official 340:28d1f895c6fe 154 if (data_bits == 9) {
mbed_official 340:28d1f895c6fe 155 obj->databits = UART_WORDLENGTH_9B;
mbed_official 340:28d1f895c6fe 156 } else {
mbed_official 340:28d1f895c6fe 157 obj->databits = UART_WORDLENGTH_8B;
mbed_official 340:28d1f895c6fe 158 }
mbed_official 340:28d1f895c6fe 159
mbed_official 340:28d1f895c6fe 160 switch (parity) {
mbed_official 340:28d1f895c6fe 161 case ParityOdd:
mbed_official 340:28d1f895c6fe 162 case ParityForced0:
mbed_official 340:28d1f895c6fe 163 obj->parity = UART_PARITY_ODD;
mbed_official 340:28d1f895c6fe 164 break;
mbed_official 340:28d1f895c6fe 165 case ParityEven:
mbed_official 340:28d1f895c6fe 166 case ParityForced1:
mbed_official 340:28d1f895c6fe 167 obj->parity = UART_PARITY_EVEN;
mbed_official 340:28d1f895c6fe 168 break;
mbed_official 340:28d1f895c6fe 169 default: // ParityNone
mbed_official 340:28d1f895c6fe 170 obj->parity = UART_PARITY_NONE;
mbed_official 340:28d1f895c6fe 171 break;
mbed_official 340:28d1f895c6fe 172 }
mbed_official 340:28d1f895c6fe 173
mbed_official 340:28d1f895c6fe 174 if (stop_bits == 2) {
mbed_official 340:28d1f895c6fe 175 obj->stopbits = UART_STOPBITS_2;
mbed_official 340:28d1f895c6fe 176 } else {
mbed_official 340:28d1f895c6fe 177 obj->stopbits = UART_STOPBITS_1;
mbed_official 340:28d1f895c6fe 178 }
mbed_official 340:28d1f895c6fe 179
mbed_official 340:28d1f895c6fe 180 init_uart(obj);
mbed_official 340:28d1f895c6fe 181 }
mbed_official 340:28d1f895c6fe 182
mbed_official 340:28d1f895c6fe 183 /******************************************************************************
mbed_official 340:28d1f895c6fe 184 * INTERRUPTS HANDLING
mbed_official 340:28d1f895c6fe 185 ******************************************************************************/
mbed_official 340:28d1f895c6fe 186
mbed_official 340:28d1f895c6fe 187 static void uart_irq(UARTName name, int id)
mbed_official 340:28d1f895c6fe 188 {
mbed_official 340:28d1f895c6fe 189 UartHandle.Instance = (USART_TypeDef *)name;
mbed_official 340:28d1f895c6fe 190 if (serial_irq_ids[id] != 0) {
mbed_official 340:28d1f895c6fe 191 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
mbed_official 340:28d1f895c6fe 192 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 340:28d1f895c6fe 193 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TC);
mbed_official 340:28d1f895c6fe 194 }
mbed_official 340:28d1f895c6fe 195 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
mbed_official 340:28d1f895c6fe 196 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 340:28d1f895c6fe 197 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
mbed_official 340:28d1f895c6fe 198 }
mbed_official 340:28d1f895c6fe 199 }
mbed_official 340:28d1f895c6fe 200 }
mbed_official 340:28d1f895c6fe 201
mbed_official 340:28d1f895c6fe 202 static void uart1_irq(void)
mbed_official 340:28d1f895c6fe 203 {
mbed_official 340:28d1f895c6fe 204 uart_irq(UART_1, 0);
mbed_official 340:28d1f895c6fe 205 }
mbed_official 340:28d1f895c6fe 206
mbed_official 340:28d1f895c6fe 207 static void uart2_irq(void)
mbed_official 340:28d1f895c6fe 208 {
mbed_official 340:28d1f895c6fe 209 uart_irq(UART_2, 1);
mbed_official 340:28d1f895c6fe 210 }
mbed_official 340:28d1f895c6fe 211
mbed_official 340:28d1f895c6fe 212 static void uart6_irq(void)
mbed_official 340:28d1f895c6fe 213 {
mbed_official 340:28d1f895c6fe 214 uart_irq(UART_6, 2);
mbed_official 340:28d1f895c6fe 215 }
mbed_official 340:28d1f895c6fe 216
mbed_official 340:28d1f895c6fe 217 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
mbed_official 340:28d1f895c6fe 218 {
mbed_official 340:28d1f895c6fe 219 irq_handler = handler;
mbed_official 340:28d1f895c6fe 220 serial_irq_ids[obj->index] = id;
mbed_official 340:28d1f895c6fe 221 }
mbed_official 340:28d1f895c6fe 222
mbed_official 340:28d1f895c6fe 223 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
mbed_official 340:28d1f895c6fe 224 {
mbed_official 340:28d1f895c6fe 225 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 340:28d1f895c6fe 226 uint32_t vector = 0;
mbed_official 340:28d1f895c6fe 227
mbed_official 340:28d1f895c6fe 228 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 340:28d1f895c6fe 229
mbed_official 340:28d1f895c6fe 230 if (obj->uart == UART_1) {
mbed_official 340:28d1f895c6fe 231 irq_n = USART1_IRQn;
mbed_official 340:28d1f895c6fe 232 vector = (uint32_t)&uart1_irq;
mbed_official 340:28d1f895c6fe 233 }
mbed_official 340:28d1f895c6fe 234
mbed_official 340:28d1f895c6fe 235 if (obj->uart == UART_2) {
mbed_official 340:28d1f895c6fe 236 irq_n = USART2_IRQn;
mbed_official 340:28d1f895c6fe 237 vector = (uint32_t)&uart2_irq;
mbed_official 340:28d1f895c6fe 238 }
mbed_official 340:28d1f895c6fe 239
mbed_official 340:28d1f895c6fe 240 if (obj->uart == UART_6) {
mbed_official 340:28d1f895c6fe 241 irq_n = USART6_IRQn;
mbed_official 340:28d1f895c6fe 242 vector = (uint32_t)&uart6_irq;
mbed_official 340:28d1f895c6fe 243 }
mbed_official 340:28d1f895c6fe 244
mbed_official 340:28d1f895c6fe 245 if (enable) {
mbed_official 340:28d1f895c6fe 246
mbed_official 340:28d1f895c6fe 247 if (irq == RxIrq) {
mbed_official 340:28d1f895c6fe 248 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 340:28d1f895c6fe 249 } else { // TxIrq
mbed_official 340:28d1f895c6fe 250 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 340:28d1f895c6fe 251 }
mbed_official 340:28d1f895c6fe 252
mbed_official 340:28d1f895c6fe 253 NVIC_SetVector(irq_n, vector);
mbed_official 340:28d1f895c6fe 254 NVIC_EnableIRQ(irq_n);
mbed_official 340:28d1f895c6fe 255
mbed_official 340:28d1f895c6fe 256 } else { // disable
mbed_official 340:28d1f895c6fe 257
mbed_official 340:28d1f895c6fe 258 int all_disabled = 0;
mbed_official 340:28d1f895c6fe 259
mbed_official 340:28d1f895c6fe 260 if (irq == RxIrq) {
mbed_official 340:28d1f895c6fe 261 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 340:28d1f895c6fe 262 // Check if TxIrq is disabled too
mbed_official 340:28d1f895c6fe 263 if ((UartHandle.Instance->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 340:28d1f895c6fe 264 } else { // TxIrq
mbed_official 340:28d1f895c6fe 265 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TXE);
mbed_official 340:28d1f895c6fe 266 // Check if RxIrq is disabled too
mbed_official 340:28d1f895c6fe 267 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 340:28d1f895c6fe 268 }
mbed_official 340:28d1f895c6fe 269
mbed_official 340:28d1f895c6fe 270 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 340:28d1f895c6fe 271
mbed_official 340:28d1f895c6fe 272 }
mbed_official 340:28d1f895c6fe 273 }
mbed_official 340:28d1f895c6fe 274
mbed_official 340:28d1f895c6fe 275 /******************************************************************************
mbed_official 340:28d1f895c6fe 276 * READ/WRITE
mbed_official 340:28d1f895c6fe 277 ******************************************************************************/
mbed_official 340:28d1f895c6fe 278
mbed_official 340:28d1f895c6fe 279 int serial_getc(serial_t *obj)
mbed_official 340:28d1f895c6fe 280 {
mbed_official 340:28d1f895c6fe 281 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 340:28d1f895c6fe 282 while (!serial_readable(obj));
mbed_official 340:28d1f895c6fe 283 return (int)(uart->DR & 0x1FF);
mbed_official 340:28d1f895c6fe 284 }
mbed_official 340:28d1f895c6fe 285
mbed_official 340:28d1f895c6fe 286 void serial_putc(serial_t *obj, int c)
mbed_official 340:28d1f895c6fe 287 {
mbed_official 340:28d1f895c6fe 288 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 340:28d1f895c6fe 289 while (!serial_writable(obj));
mbed_official 340:28d1f895c6fe 290 uart->DR = (uint32_t)(c & 0x1FF);
mbed_official 340:28d1f895c6fe 291 }
mbed_official 340:28d1f895c6fe 292
mbed_official 340:28d1f895c6fe 293 int serial_readable(serial_t *obj)
mbed_official 340:28d1f895c6fe 294 {
mbed_official 340:28d1f895c6fe 295 int status;
mbed_official 340:28d1f895c6fe 296 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 340:28d1f895c6fe 297 // Check if data is received
mbed_official 340:28d1f895c6fe 298 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 340:28d1f895c6fe 299 return status;
mbed_official 340:28d1f895c6fe 300 }
mbed_official 340:28d1f895c6fe 301
mbed_official 340:28d1f895c6fe 302 int serial_writable(serial_t *obj)
mbed_official 340:28d1f895c6fe 303 {
mbed_official 340:28d1f895c6fe 304 int status;
mbed_official 340:28d1f895c6fe 305 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 340:28d1f895c6fe 306 // Check if data is transmitted
mbed_official 340:28d1f895c6fe 307 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 340:28d1f895c6fe 308 return status;
mbed_official 340:28d1f895c6fe 309 }
mbed_official 340:28d1f895c6fe 310
mbed_official 340:28d1f895c6fe 311 void serial_clear(serial_t *obj)
mbed_official 340:28d1f895c6fe 312 {
mbed_official 340:28d1f895c6fe 313 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 340:28d1f895c6fe 314 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TXE);
mbed_official 340:28d1f895c6fe 315 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
mbed_official 340:28d1f895c6fe 316 }
mbed_official 340:28d1f895c6fe 317
mbed_official 340:28d1f895c6fe 318 void serial_pinout_tx(PinName tx)
mbed_official 340:28d1f895c6fe 319 {
mbed_official 340:28d1f895c6fe 320 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 340:28d1f895c6fe 321 }
mbed_official 340:28d1f895c6fe 322
mbed_official 340:28d1f895c6fe 323 void serial_break_set(serial_t *obj)
mbed_official 340:28d1f895c6fe 324 {
mbed_official 340:28d1f895c6fe 325 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 340:28d1f895c6fe 326 HAL_LIN_SendBreak(&UartHandle);
mbed_official 340:28d1f895c6fe 327 }
mbed_official 340:28d1f895c6fe 328
mbed_official 340:28d1f895c6fe 329 void serial_break_clear(serial_t *obj)
mbed_official 340:28d1f895c6fe 330 {
mbed_official 340:28d1f895c6fe 331 }
mbed_official 340:28d1f895c6fe 332
mbed_official 340:28d1f895c6fe 333 #endif