Ken Todotani / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_DISCO_F407VG/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:
133:d4dda5c437f0
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 133:d4dda5c437f0 1 /* mbed Microcontroller Library
mbed_official 133:d4dda5c437f0 2 *******************************************************************************
mbed_official 133:d4dda5c437f0 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 133:d4dda5c437f0 4 * All rights reserved.
mbed_official 133:d4dda5c437f0 5 *
mbed_official 133:d4dda5c437f0 6 * Redistribution and use in source and binary forms, with or without
mbed_official 133:d4dda5c437f0 7 * modification, are permitted provided that the following conditions are met:
mbed_official 133:d4dda5c437f0 8 *
mbed_official 133:d4dda5c437f0 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 133:d4dda5c437f0 10 * this list of conditions and the following disclaimer.
mbed_official 133:d4dda5c437f0 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 133:d4dda5c437f0 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 133:d4dda5c437f0 13 * and/or other materials provided with the distribution.
mbed_official 133:d4dda5c437f0 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 133:d4dda5c437f0 15 * may be used to endorse or promote products derived from this software
mbed_official 133:d4dda5c437f0 16 * without specific prior written permission.
mbed_official 133:d4dda5c437f0 17 *
mbed_official 133:d4dda5c437f0 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 133:d4dda5c437f0 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 133:d4dda5c437f0 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 133:d4dda5c437f0 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 133:d4dda5c437f0 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 133:d4dda5c437f0 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 133:d4dda5c437f0 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 133:d4dda5c437f0 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 133:d4dda5c437f0 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 133:d4dda5c437f0 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 133:d4dda5c437f0 28 *******************************************************************************
mbed_official 133:d4dda5c437f0 29 */
mbed_official 133:d4dda5c437f0 30 #include "serial_api.h"
mbed_official 133:d4dda5c437f0 31 #include "cmsis.h"
mbed_official 133:d4dda5c437f0 32 #include "pinmap.h"
mbed_official 133:d4dda5c437f0 33 #include <string.h>
mbed_official 133:d4dda5c437f0 34 #include "stm32f4xx_hal.h"
mbed_official 133:d4dda5c437f0 35
mbed_official 133:d4dda5c437f0 36 static const PinMap PinMap_UART_TX[] = {
mbed_official 133:d4dda5c437f0 37 {PA_2, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
mbed_official 133:d4dda5c437f0 38 {PA_9, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 133:d4dda5c437f0 39 {PA_11, UART_6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
mbed_official 133:d4dda5c437f0 40 {PB_6, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 133:d4dda5c437f0 41 {PC_6, UART_6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
mbed_official 133:d4dda5c437f0 42 {NC, NC, 0}
mbed_official 133:d4dda5c437f0 43 };
mbed_official 133:d4dda5c437f0 44
mbed_official 133:d4dda5c437f0 45 static const PinMap PinMap_UART_RX[] = {
mbed_official 133:d4dda5c437f0 46 {PA_3, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
mbed_official 133:d4dda5c437f0 47 {PA_10, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 133:d4dda5c437f0 48 {PA_12, UART_6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
mbed_official 133:d4dda5c437f0 49 {PB_7, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 133:d4dda5c437f0 50 {PC_7, UART_6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
mbed_official 133:d4dda5c437f0 51 {NC, NC, 0}
mbed_official 133:d4dda5c437f0 52 };
mbed_official 133:d4dda5c437f0 53
mbed_official 133:d4dda5c437f0 54 #define UART_NUM (3)
mbed_official 133:d4dda5c437f0 55
mbed_official 133:d4dda5c437f0 56 static uint32_t serial_irq_ids[UART_NUM] = {0};
mbed_official 133:d4dda5c437f0 57
mbed_official 133:d4dda5c437f0 58 static uart_irq_handler irq_handler;
mbed_official 133:d4dda5c437f0 59
mbed_official 133:d4dda5c437f0 60 UART_HandleTypeDef UartHandle;
mbed_official 133:d4dda5c437f0 61
mbed_official 133:d4dda5c437f0 62 int stdio_uart_inited = 0;
mbed_official 133:d4dda5c437f0 63 serial_t stdio_uart;
mbed_official 133:d4dda5c437f0 64
mbed_official 133:d4dda5c437f0 65 static void init_uart(serial_t *obj) {
mbed_official 133:d4dda5c437f0 66 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 133:d4dda5c437f0 67
mbed_official 133:d4dda5c437f0 68 UartHandle.Init.BaudRate = obj->baudrate;
mbed_official 133:d4dda5c437f0 69 UartHandle.Init.WordLength = obj->databits;
mbed_official 133:d4dda5c437f0 70 UartHandle.Init.StopBits = obj->stopbits;
mbed_official 133:d4dda5c437f0 71 UartHandle.Init.Parity = obj->parity;
mbed_official 133:d4dda5c437f0 72 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
mbed_official 133:d4dda5c437f0 73 UartHandle.Init.Mode = UART_MODE_TX_RX;
mbed_official 133:d4dda5c437f0 74
mbed_official 227:7bd0639b8911 75 HAL_UART_Init(&UartHandle);
mbed_official 133:d4dda5c437f0 76 }
mbed_official 133:d4dda5c437f0 77
mbed_official 227:7bd0639b8911 78 void serial_init(serial_t *obj, PinName tx, PinName rx) {
mbed_official 133:d4dda5c437f0 79 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 133:d4dda5c437f0 80 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 133:d4dda5c437f0 81 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 133:d4dda5c437f0 82
mbed_official 133:d4dda5c437f0 83 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 133:d4dda5c437f0 84 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 227:7bd0639b8911 85 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 133:d4dda5c437f0 86
mbed_official 133:d4dda5c437f0 87 // Enable USART clock
mbed_official 133:d4dda5c437f0 88 if (obj->uart == UART_1) {
mbed_official 133:d4dda5c437f0 89 __USART1_CLK_ENABLE();
mbed_official 133:d4dda5c437f0 90 }
mbed_official 133:d4dda5c437f0 91 if (obj->uart == UART_2) {
mbed_official 133:d4dda5c437f0 92 __USART2_CLK_ENABLE();
mbed_official 133:d4dda5c437f0 93 }
mbed_official 133:d4dda5c437f0 94 if (obj->uart == UART_6) {
mbed_official 133:d4dda5c437f0 95 __USART6_CLK_ENABLE();
mbed_official 133:d4dda5c437f0 96 }
mbed_official 133:d4dda5c437f0 97
mbed_official 133:d4dda5c437f0 98 // Configure the UART pins
mbed_official 133:d4dda5c437f0 99 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 133:d4dda5c437f0 100 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 133:d4dda5c437f0 101 pin_mode(tx, PullUp);
mbed_official 133:d4dda5c437f0 102 pin_mode(rx, PullUp);
mbed_official 133:d4dda5c437f0 103
mbed_official 133:d4dda5c437f0 104 // Configure UART
mbed_official 133:d4dda5c437f0 105 obj->baudrate = 9600;
mbed_official 133:d4dda5c437f0 106 obj->databits = UART_WORDLENGTH_8B;
mbed_official 133:d4dda5c437f0 107 obj->stopbits = UART_STOPBITS_1;
mbed_official 227:7bd0639b8911 108 obj->parity = UART_PARITY_NONE;
mbed_official 133:d4dda5c437f0 109
mbed_official 133:d4dda5c437f0 110 init_uart(obj);
mbed_official 133:d4dda5c437f0 111
mbed_official 133:d4dda5c437f0 112 // The index is used by irq
mbed_official 133:d4dda5c437f0 113 if (obj->uart == UART_1) obj->index = 0;
mbed_official 133:d4dda5c437f0 114 if (obj->uart == UART_2) obj->index = 1;
mbed_official 133:d4dda5c437f0 115 if (obj->uart == UART_6) obj->index = 2;
mbed_official 133:d4dda5c437f0 116
mbed_official 133:d4dda5c437f0 117 // For stdio management
mbed_official 133:d4dda5c437f0 118 if (obj->uart == STDIO_UART) {
mbed_official 133:d4dda5c437f0 119 stdio_uart_inited = 1;
mbed_official 133:d4dda5c437f0 120 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 133:d4dda5c437f0 121 }
mbed_official 133:d4dda5c437f0 122
mbed_official 133:d4dda5c437f0 123 }
mbed_official 133:d4dda5c437f0 124
mbed_official 133:d4dda5c437f0 125 void serial_free(serial_t *obj) {
mbed_official 133:d4dda5c437f0 126 serial_irq_ids[obj->index] = 0;
mbed_official 133:d4dda5c437f0 127 }
mbed_official 133:d4dda5c437f0 128
mbed_official 133:d4dda5c437f0 129 void serial_baud(serial_t *obj, int baudrate) {
mbed_official 133:d4dda5c437f0 130 obj->baudrate = baudrate;
mbed_official 133:d4dda5c437f0 131 init_uart(obj);
mbed_official 133:d4dda5c437f0 132 }
mbed_official 133:d4dda5c437f0 133
mbed_official 133:d4dda5c437f0 134 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
mbed_official 133:d4dda5c437f0 135 if (data_bits == 8) {
mbed_official 133:d4dda5c437f0 136 obj->databits = UART_WORDLENGTH_8B;
mbed_official 133:d4dda5c437f0 137 }
mbed_official 133:d4dda5c437f0 138 else {
mbed_official 133:d4dda5c437f0 139 obj->databits = UART_WORDLENGTH_9B;
mbed_official 133:d4dda5c437f0 140 }
mbed_official 133:d4dda5c437f0 141
mbed_official 133:d4dda5c437f0 142 switch (parity) {
mbed_official 133:d4dda5c437f0 143 case ParityOdd:
mbed_official 133:d4dda5c437f0 144 case ParityForced0:
mbed_official 133:d4dda5c437f0 145 obj->parity = UART_PARITY_ODD;
mbed_official 133:d4dda5c437f0 146 break;
mbed_official 133:d4dda5c437f0 147 case ParityEven:
mbed_official 227:7bd0639b8911 148 case ParityForced1:
mbed_official 133:d4dda5c437f0 149 obj->parity = UART_PARITY_EVEN;
mbed_official 133:d4dda5c437f0 150 break;
mbed_official 133:d4dda5c437f0 151 default: // ParityNone
mbed_official 133:d4dda5c437f0 152 obj->parity = UART_PARITY_NONE;
mbed_official 133:d4dda5c437f0 153 break;
mbed_official 133:d4dda5c437f0 154 }
mbed_official 133:d4dda5c437f0 155
mbed_official 133:d4dda5c437f0 156 if (stop_bits == 2) {
mbed_official 133:d4dda5c437f0 157 obj->stopbits = UART_STOPBITS_2;
mbed_official 133:d4dda5c437f0 158 }
mbed_official 133:d4dda5c437f0 159 else {
mbed_official 133:d4dda5c437f0 160 obj->stopbits = UART_STOPBITS_1;
mbed_official 133:d4dda5c437f0 161 }
mbed_official 133:d4dda5c437f0 162
mbed_official 133:d4dda5c437f0 163 init_uart(obj);
mbed_official 133:d4dda5c437f0 164 }
mbed_official 133:d4dda5c437f0 165
mbed_official 133:d4dda5c437f0 166 /******************************************************************************
mbed_official 133:d4dda5c437f0 167 * INTERRUPTS HANDLING
mbed_official 133:d4dda5c437f0 168 ******************************************************************************/
mbed_official 133:d4dda5c437f0 169
mbed_official 133:d4dda5c437f0 170 // Not part of mbed api
mbed_official 133:d4dda5c437f0 171 static void uart_irq(UARTName name, int id) {
mbed_official 133:d4dda5c437f0 172 UartHandle.Instance = (USART_TypeDef *)name;
mbed_official 133:d4dda5c437f0 173
mbed_official 133:d4dda5c437f0 174 if (serial_irq_ids[id] != 0) {
mbed_official 133:d4dda5c437f0 175 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
mbed_official 133:d4dda5c437f0 176 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 133:d4dda5c437f0 177 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TC);
mbed_official 133:d4dda5c437f0 178 }
mbed_official 133:d4dda5c437f0 179 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
mbed_official 133:d4dda5c437f0 180 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 133:d4dda5c437f0 181 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
mbed_official 133:d4dda5c437f0 182 }
mbed_official 133:d4dda5c437f0 183 }
mbed_official 133:d4dda5c437f0 184 }
mbed_official 133:d4dda5c437f0 185
mbed_official 133:d4dda5c437f0 186 // Not part of mbed api
mbed_official 133:d4dda5c437f0 187 static void uart1_irq(void) {uart_irq(UART_1, 0);}
mbed_official 133:d4dda5c437f0 188 static void uart2_irq(void) {uart_irq(UART_2, 1);}
mbed_official 133:d4dda5c437f0 189 static void uart6_irq(void) {uart_irq(UART_6, 2);}
mbed_official 133:d4dda5c437f0 190
mbed_official 133:d4dda5c437f0 191 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
mbed_official 133:d4dda5c437f0 192 irq_handler = handler;
mbed_official 133:d4dda5c437f0 193 serial_irq_ids[obj->index] = id;
mbed_official 133:d4dda5c437f0 194 }
mbed_official 133:d4dda5c437f0 195
mbed_official 133:d4dda5c437f0 196 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
mbed_official 133:d4dda5c437f0 197 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 133:d4dda5c437f0 198 uint32_t vector = 0;
mbed_official 133:d4dda5c437f0 199
mbed_official 133:d4dda5c437f0 200 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 133:d4dda5c437f0 201
mbed_official 133:d4dda5c437f0 202 if (obj->uart == UART_1) {
mbed_official 133:d4dda5c437f0 203 irq_n = USART1_IRQn;
mbed_official 133:d4dda5c437f0 204 vector = (uint32_t)&uart1_irq;
mbed_official 133:d4dda5c437f0 205 }
mbed_official 133:d4dda5c437f0 206
mbed_official 133:d4dda5c437f0 207 if (obj->uart == UART_2) {
mbed_official 133:d4dda5c437f0 208 irq_n = USART2_IRQn;
mbed_official 133:d4dda5c437f0 209 vector = (uint32_t)&uart2_irq;
mbed_official 133:d4dda5c437f0 210 }
mbed_official 133:d4dda5c437f0 211
mbed_official 133:d4dda5c437f0 212 if (obj->uart == UART_6) {
mbed_official 133:d4dda5c437f0 213 irq_n = USART6_IRQn;
mbed_official 133:d4dda5c437f0 214 vector = (uint32_t)&uart6_irq;
mbed_official 133:d4dda5c437f0 215 }
mbed_official 133:d4dda5c437f0 216
mbed_official 133:d4dda5c437f0 217 if (enable) {
mbed_official 133:d4dda5c437f0 218
mbed_official 133:d4dda5c437f0 219 if (irq == RxIrq) {
mbed_official 133:d4dda5c437f0 220 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 133:d4dda5c437f0 221 }
mbed_official 133:d4dda5c437f0 222 else { // TxIrq
mbed_official 133:d4dda5c437f0 223 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 227:7bd0639b8911 224 }
mbed_official 133:d4dda5c437f0 225
mbed_official 133:d4dda5c437f0 226 NVIC_SetVector(irq_n, vector);
mbed_official 133:d4dda5c437f0 227 NVIC_EnableIRQ(irq_n);
mbed_official 133:d4dda5c437f0 228
mbed_official 133:d4dda5c437f0 229 } else { // disable
mbed_official 133:d4dda5c437f0 230
mbed_official 133:d4dda5c437f0 231 int all_disabled = 0;
mbed_official 133:d4dda5c437f0 232
mbed_official 133:d4dda5c437f0 233 if (irq == RxIrq) {
mbed_official 133:d4dda5c437f0 234 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 133:d4dda5c437f0 235 // Check if TxIrq is disabled too
mbed_official 133:d4dda5c437f0 236 if ((UartHandle.Instance->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 133:d4dda5c437f0 237 }
mbed_official 133:d4dda5c437f0 238 else { // TxIrq
mbed_official 133:d4dda5c437f0 239 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TXE);
mbed_official 133:d4dda5c437f0 240 // Check if RxIrq is disabled too
mbed_official 227:7bd0639b8911 241 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 133:d4dda5c437f0 242 }
mbed_official 133:d4dda5c437f0 243
mbed_official 133:d4dda5c437f0 244 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 133:d4dda5c437f0 245
mbed_official 227:7bd0639b8911 246 }
mbed_official 133:d4dda5c437f0 247 }
mbed_official 133:d4dda5c437f0 248
mbed_official 133:d4dda5c437f0 249 /******************************************************************************
mbed_official 133:d4dda5c437f0 250 * READ/WRITE
mbed_official 133:d4dda5c437f0 251 ******************************************************************************/
mbed_official 133:d4dda5c437f0 252
mbed_official 133:d4dda5c437f0 253 int serial_getc(serial_t *obj) {
mbed_official 133:d4dda5c437f0 254 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 133:d4dda5c437f0 255 while (!serial_readable(obj));
mbed_official 133:d4dda5c437f0 256 return (int)(uart->DR & 0x1FF);
mbed_official 133:d4dda5c437f0 257 }
mbed_official 133:d4dda5c437f0 258
mbed_official 133:d4dda5c437f0 259 void serial_putc(serial_t *obj, int c) {
mbed_official 133:d4dda5c437f0 260 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 133:d4dda5c437f0 261 while (!serial_writable(obj));
mbed_official 133:d4dda5c437f0 262 uart->DR = (uint32_t)(c & 0x1FF);
mbed_official 133:d4dda5c437f0 263 }
mbed_official 133:d4dda5c437f0 264
mbed_official 133:d4dda5c437f0 265 int serial_readable(serial_t *obj) {
mbed_official 133:d4dda5c437f0 266 int status;
mbed_official 133:d4dda5c437f0 267 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 133:d4dda5c437f0 268 // Check if data is received
mbed_official 133:d4dda5c437f0 269 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 133:d4dda5c437f0 270 return status;
mbed_official 133:d4dda5c437f0 271 }
mbed_official 133:d4dda5c437f0 272
mbed_official 133:d4dda5c437f0 273 int serial_writable(serial_t *obj) {
mbed_official 133:d4dda5c437f0 274 int status;
mbed_official 133:d4dda5c437f0 275 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 133:d4dda5c437f0 276 // Check if data is transmitted
mbed_official 133:d4dda5c437f0 277 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 133:d4dda5c437f0 278 return status;
mbed_official 133:d4dda5c437f0 279 }
mbed_official 133:d4dda5c437f0 280
mbed_official 133:d4dda5c437f0 281 void serial_clear(serial_t *obj) {
mbed_official 133:d4dda5c437f0 282 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 133:d4dda5c437f0 283 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TXE);
mbed_official 133:d4dda5c437f0 284 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
mbed_official 133:d4dda5c437f0 285 }
mbed_official 133:d4dda5c437f0 286
mbed_official 133:d4dda5c437f0 287 void serial_pinout_tx(PinName tx) {
mbed_official 133:d4dda5c437f0 288 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 133:d4dda5c437f0 289 }
mbed_official 133:d4dda5c437f0 290
mbed_official 133:d4dda5c437f0 291 void serial_break_set(serial_t *obj) {
mbed_official 133:d4dda5c437f0 292 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 133:d4dda5c437f0 293 HAL_LIN_SendBreak(&UartHandle);
mbed_official 133:d4dda5c437f0 294 }
mbed_official 133:d4dda5c437f0 295
mbed_official 133:d4dda5c437f0 296 void serial_break_clear(serial_t *obj) {
mbed_official 133:d4dda5c437f0 297 }