mbed official / mbed-src

mbed library sources

Dependents:   Encrypted my_mbed lklk CyaSSL_DTLS_Cellular ... more

Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 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