long dao / mbed-src

Mbed for VNG board

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F401RE/serial_api.c@404:cbc7dfcb0ce9, 2014-11-14 (annotated)

Committer:
mbed_official
Date:
Fri Nov 14 10:15:07 2014 +0000
Revision:
404:cbc7dfcb0ce9
Parent:
402:09075a3b15e3
Child:
406:7b834b41c730
Synchronized with git revision c4901dbb33541e1dcda3fe69a1ec2a11caf496bf



Full URL: https://github.com/mbedmicro/mbed/commit/c4901dbb33541e1dcda3fe69a1ec2a11caf496bf/



Targets: NUCLEOs - Align hal files

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 402:09075a3b15e3 68 static void init_uart(serial_t *obj)
mbed_official 402:09075a3b15e3 69 {
mbed_official 87:085cde657901 70 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 172:2f4f8c56b261 71
mbed_official 87:085cde657901 72 UartHandle.Init.BaudRate = obj->baudrate;
mbed_official 87:085cde657901 73 UartHandle.Init.WordLength = obj->databits;
mbed_official 87:085cde657901 74 UartHandle.Init.StopBits = obj->stopbits;
mbed_official 87:085cde657901 75 UartHandle.Init.Parity = obj->parity;
mbed_official 87:085cde657901 76 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
mbed_official 242:7074e42da0b2 77
mbed_official 242:7074e42da0b2 78 if (obj->pin_rx == NC) {
mbed_official 242:7074e42da0b2 79 UartHandle.Init.Mode = UART_MODE_TX;
mbed_official 242:7074e42da0b2 80 } else if (obj->pin_tx == NC) {
mbed_official 242:7074e42da0b2 81 UartHandle.Init.Mode = UART_MODE_RX;
mbed_official 242:7074e42da0b2 82 } else {
mbed_official 242:7074e42da0b2 83 UartHandle.Init.Mode = UART_MODE_TX_RX;
mbed_official 242:7074e42da0b2 84 }
mbed_official 172:2f4f8c56b261 85
mbed_official 172:2f4f8c56b261 86 HAL_UART_Init(&UartHandle);
mbed_official 87:085cde657901 87 }
mbed_official 87:085cde657901 88
mbed_official 402:09075a3b15e3 89 void serial_init(serial_t *obj, PinName tx, PinName rx)
mbed_official 402:09075a3b15e3 90 {
mbed_official 87:085cde657901 91 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 87:085cde657901 92 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 87:085cde657901 93 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 172:2f4f8c56b261 94
mbed_official 87:085cde657901 95 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 87:085cde657901 96 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 227:7bd0639b8911 97 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 87:085cde657901 98
mbed_official 87:085cde657901 99 // Enable USART clock
mbed_official 87:085cde657901 100 if (obj->uart == UART_1) {
mbed_official 87:085cde657901 101 __USART1_CLK_ENABLE();
mbed_official 215:83cf97a28428 102 obj->index = 0;
mbed_official 87:085cde657901 103 }
mbed_official 87:085cde657901 104 if (obj->uart == UART_2) {
mbed_official 87:085cde657901 105 __USART2_CLK_ENABLE();
mbed_official 215:83cf97a28428 106 obj->index = 1;
mbed_official 87:085cde657901 107 }
mbed_official 125:23cc3068a9e4 108 if (obj->uart == UART_6) {
mbed_official 125:23cc3068a9e4 109 __USART6_CLK_ENABLE();
mbed_official 215:83cf97a28428 110 obj->index = 2;
mbed_official 115:4f0cb9cdc478 111 }
mbed_official 172:2f4f8c56b261 112
mbed_official 87:085cde657901 113 // Configure the UART pins
mbed_official 87:085cde657901 114 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 87:085cde657901 115 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 339:40bd4701f3e2 116 if (tx != NC) {
mbed_official 339:40bd4701f3e2 117 pin_mode(tx, PullUp);
mbed_official 339:40bd4701f3e2 118 }
mbed_official 339:40bd4701f3e2 119 if (rx != NC) {
mbed_official 339:40bd4701f3e2 120 pin_mode(rx, PullUp);
mbed_official 339:40bd4701f3e2 121 }
mbed_official 172:2f4f8c56b261 122
mbed_official 87:085cde657901 123 // Configure UART
mbed_official 87:085cde657901 124 obj->baudrate = 9600;
mbed_official 87:085cde657901 125 obj->databits = UART_WORDLENGTH_8B;
mbed_official 87:085cde657901 126 obj->stopbits = UART_STOPBITS_1;
mbed_official 172:2f4f8c56b261 127 obj->parity = UART_PARITY_NONE;
mbed_official 87:085cde657901 128
mbed_official 215:83cf97a28428 129 obj->pin_tx = tx;
mbed_official 215:83cf97a28428 130 obj->pin_rx = rx;
mbed_official 87:085cde657901 131
mbed_official 215:83cf97a28428 132 init_uart(obj);
mbed_official 172:2f4f8c56b261 133
mbed_official 87:085cde657901 134 // For stdio management
mbed_official 87:085cde657901 135 if (obj->uart == STDIO_UART) {
mbed_official 87:085cde657901 136 stdio_uart_inited = 1;
mbed_official 87:085cde657901 137 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 87:085cde657901 138 }
mbed_official 87:085cde657901 139 }
mbed_official 87:085cde657901 140
mbed_official 402:09075a3b15e3 141 void serial_free(serial_t *obj)
mbed_official 402:09075a3b15e3 142 {
mbed_official 215:83cf97a28428 143 // Reset UART and disable clock
mbed_official 215:83cf97a28428 144 if (obj->uart == UART_1) {
mbed_official 215:83cf97a28428 145 __USART1_FORCE_RESET();
mbed_official 215:83cf97a28428 146 __USART1_RELEASE_RESET();
mbed_official 215:83cf97a28428 147 __USART1_CLK_DISABLE();
mbed_official 215:83cf97a28428 148 }
mbed_official 215:83cf97a28428 149 if (obj->uart == UART_2) {
mbed_official 215:83cf97a28428 150 __USART2_FORCE_RESET();
mbed_official 215:83cf97a28428 151 __USART2_RELEASE_RESET();
mbed_official 215:83cf97a28428 152 __USART2_CLK_DISABLE();
mbed_official 215:83cf97a28428 153 }
mbed_official 215:83cf97a28428 154 if (obj->uart == UART_6) {
mbed_official 215:83cf97a28428 155 __USART6_FORCE_RESET();
mbed_official 215:83cf97a28428 156 __USART6_RELEASE_RESET();
mbed_official 215:83cf97a28428 157 __USART6_CLK_DISABLE();
mbed_official 215:83cf97a28428 158 }
mbed_official 215:83cf97a28428 159
mbed_official 215:83cf97a28428 160 // Configure GPIOs
mbed_official 215:83cf97a28428 161 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 215:83cf97a28428 162 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 215:83cf97a28428 163
mbed_official 87:085cde657901 164 serial_irq_ids[obj->index] = 0;
mbed_official 87:085cde657901 165 }
mbed_official 87:085cde657901 166
mbed_official 402:09075a3b15e3 167 void serial_baud(serial_t *obj, int baudrate)
mbed_official 402:09075a3b15e3 168 {
mbed_official 87:085cde657901 169 obj->baudrate = baudrate;
mbed_official 87:085cde657901 170 init_uart(obj);
mbed_official 87:085cde657901 171 }
mbed_official 87:085cde657901 172
mbed_official 402:09075a3b15e3 173 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
mbed_official 402:09075a3b15e3 174 {
mbed_official 242:7074e42da0b2 175 if (data_bits == 9) {
mbed_official 242:7074e42da0b2 176 obj->databits = UART_WORDLENGTH_9B;
mbed_official 242:7074e42da0b2 177 } else {
mbed_official 87:085cde657901 178 obj->databits = UART_WORDLENGTH_8B;
mbed_official 87:085cde657901 179 }
mbed_official 87:085cde657901 180
mbed_official 87:085cde657901 181 switch (parity) {
mbed_official 172:2f4f8c56b261 182 case ParityOdd:
mbed_official 172:2f4f8c56b261 183 case ParityForced0:
mbed_official 172:2f4f8c56b261 184 obj->parity = UART_PARITY_ODD;
mbed_official 172:2f4f8c56b261 185 break;
mbed_official 172:2f4f8c56b261 186 case ParityEven:
mbed_official 172:2f4f8c56b261 187 case ParityForced1:
mbed_official 172:2f4f8c56b261 188 obj->parity = UART_PARITY_EVEN;
mbed_official 172:2f4f8c56b261 189 break;
mbed_official 172:2f4f8c56b261 190 default: // ParityNone
mbed_official 172:2f4f8c56b261 191 obj->parity = UART_PARITY_NONE;
mbed_official 172:2f4f8c56b261 192 break;
mbed_official 87:085cde657901 193 }
mbed_official 172:2f4f8c56b261 194
mbed_official 87:085cde657901 195 if (stop_bits == 2) {
mbed_official 87:085cde657901 196 obj->stopbits = UART_STOPBITS_2;
mbed_official 172:2f4f8c56b261 197 } else {
mbed_official 87:085cde657901 198 obj->stopbits = UART_STOPBITS_1;
mbed_official 87:085cde657901 199 }
mbed_official 87:085cde657901 200
mbed_official 87:085cde657901 201 init_uart(obj);
mbed_official 87:085cde657901 202 }
mbed_official 87:085cde657901 203
mbed_official 87:085cde657901 204 /******************************************************************************
mbed_official 87:085cde657901 205 * INTERRUPTS HANDLING
mbed_official 87:085cde657901 206 ******************************************************************************/
mbed_official 87:085cde657901 207
mbed_official 402:09075a3b15e3 208 static void uart_irq(UARTName name, int id)
mbed_official 402:09075a3b15e3 209 {
mbed_official 87:085cde657901 210 UartHandle.Instance = (USART_TypeDef *)name;
mbed_official 87:085cde657901 211 if (serial_irq_ids[id] != 0) {
mbed_official 87:085cde657901 212 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
mbed_official 87:085cde657901 213 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 87:085cde657901 214 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TC);
mbed_official 87:085cde657901 215 }
mbed_official 87:085cde657901 216 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
mbed_official 87:085cde657901 217 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 87:085cde657901 218 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
mbed_official 87:085cde657901 219 }
mbed_official 87:085cde657901 220 }
mbed_official 87:085cde657901 221 }
mbed_official 87:085cde657901 222
mbed_official 402:09075a3b15e3 223 static void uart1_irq(void)
mbed_official 402:09075a3b15e3 224 {
mbed_official 172:2f4f8c56b261 225 uart_irq(UART_1, 0);
mbed_official 172:2f4f8c56b261 226 }
mbed_official 404:cbc7dfcb0ce9 227
mbed_official 402:09075a3b15e3 228 static void uart2_irq(void)
mbed_official 402:09075a3b15e3 229 {
mbed_official 172:2f4f8c56b261 230 uart_irq(UART_2, 1);
mbed_official 172:2f4f8c56b261 231 }
mbed_official 404:cbc7dfcb0ce9 232
mbed_official 402:09075a3b15e3 233 static void uart6_irq(void)
mbed_official 402:09075a3b15e3 234 {
mbed_official 172:2f4f8c56b261 235 uart_irq(UART_6, 2);
mbed_official 172:2f4f8c56b261 236 }
mbed_official 87:085cde657901 237
mbed_official 402:09075a3b15e3 238 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
mbed_official 402:09075a3b15e3 239 {
mbed_official 87:085cde657901 240 irq_handler = handler;
mbed_official 87:085cde657901 241 serial_irq_ids[obj->index] = id;
mbed_official 87:085cde657901 242 }
mbed_official 87:085cde657901 243
mbed_official 402:09075a3b15e3 244 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
mbed_official 402:09075a3b15e3 245 {
mbed_official 87:085cde657901 246 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 87:085cde657901 247 uint32_t vector = 0;
mbed_official 172:2f4f8c56b261 248
mbed_official 87:085cde657901 249 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 172:2f4f8c56b261 250
mbed_official 87:085cde657901 251 if (obj->uart == UART_1) {
mbed_official 172:2f4f8c56b261 252 irq_n = USART1_IRQn;
mbed_official 172:2f4f8c56b261 253 vector = (uint32_t)&uart1_irq;
mbed_official 87:085cde657901 254 }
mbed_official 172:2f4f8c56b261 255
mbed_official 87:085cde657901 256 if (obj->uart == UART_2) {
mbed_official 172:2f4f8c56b261 257 irq_n = USART2_IRQn;
mbed_official 172:2f4f8c56b261 258 vector = (uint32_t)&uart2_irq;
mbed_official 87:085cde657901 259 }
mbed_official 125:23cc3068a9e4 260
mbed_official 125:23cc3068a9e4 261 if (obj->uart == UART_6) {
mbed_official 172:2f4f8c56b261 262 irq_n = USART6_IRQn;
mbed_official 172:2f4f8c56b261 263 vector = (uint32_t)&uart6_irq;
mbed_official 125:23cc3068a9e4 264 }
mbed_official 172:2f4f8c56b261 265
mbed_official 87:085cde657901 266 if (enable) {
mbed_official 172:2f4f8c56b261 267
mbed_official 87:085cde657901 268 if (irq == RxIrq) {
mbed_official 87:085cde657901 269 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 172:2f4f8c56b261 270 } else { // TxIrq
mbed_official 87:085cde657901 271 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 172:2f4f8c56b261 272 }
mbed_official 172:2f4f8c56b261 273
mbed_official 87:085cde657901 274 NVIC_SetVector(irq_n, vector);
mbed_official 87:085cde657901 275 NVIC_EnableIRQ(irq_n);
mbed_official 172:2f4f8c56b261 276
mbed_official 87:085cde657901 277 } else { // disable
mbed_official 172:2f4f8c56b261 278
mbed_official 87:085cde657901 279 int all_disabled = 0;
mbed_official 172:2f4f8c56b261 280
mbed_official 87:085cde657901 281 if (irq == RxIrq) {
mbed_official 172:2f4f8c56b261 282 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 87:085cde657901 283 // Check if TxIrq is disabled too
mbed_official 87:085cde657901 284 if ((UartHandle.Instance->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 172:2f4f8c56b261 285 } else { // TxIrq
mbed_official 87:085cde657901 286 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TXE);
mbed_official 87:085cde657901 287 // Check if RxIrq is disabled too
mbed_official 172:2f4f8c56b261 288 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 87:085cde657901 289 }
mbed_official 172:2f4f8c56b261 290
mbed_official 87:085cde657901 291 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 172:2f4f8c56b261 292
mbed_official 172:2f4f8c56b261 293 }
mbed_official 87:085cde657901 294 }
mbed_official 87:085cde657901 295
mbed_official 87:085cde657901 296 /******************************************************************************
mbed_official 87:085cde657901 297 * READ/WRITE
mbed_official 87:085cde657901 298 ******************************************************************************/
mbed_official 87:085cde657901 299
mbed_official 402:09075a3b15e3 300 int serial_getc(serial_t *obj)
mbed_official 402:09075a3b15e3 301 {
mbed_official 87:085cde657901 302 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 87:085cde657901 303 while (!serial_readable(obj));
mbed_official 87:085cde657901 304 return (int)(uart->DR & 0x1FF);
mbed_official 87:085cde657901 305 }
mbed_official 87:085cde657901 306
mbed_official 402:09075a3b15e3 307 void serial_putc(serial_t *obj, int c)
mbed_official 402:09075a3b15e3 308 {
mbed_official 87:085cde657901 309 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 87:085cde657901 310 while (!serial_writable(obj));
mbed_official 87:085cde657901 311 uart->DR = (uint32_t)(c & 0x1FF);
mbed_official 87:085cde657901 312 }
mbed_official 87:085cde657901 313
mbed_official 402:09075a3b15e3 314 int serial_readable(serial_t *obj)
mbed_official 402:09075a3b15e3 315 {
mbed_official 87:085cde657901 316 int status;
mbed_official 87:085cde657901 317 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 87:085cde657901 318 // Check if data is received
mbed_official 87:085cde657901 319 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 87:085cde657901 320 return status;
mbed_official 87:085cde657901 321 }
mbed_official 87:085cde657901 322
mbed_official 402:09075a3b15e3 323 int serial_writable(serial_t *obj)
mbed_official 402:09075a3b15e3 324 {
mbed_official 87:085cde657901 325 int status;
mbed_official 87:085cde657901 326 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 87:085cde657901 327 // Check if data is transmitted
mbed_official 87:085cde657901 328 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 87:085cde657901 329 return status;
mbed_official 87:085cde657901 330 }
mbed_official 87:085cde657901 331
mbed_official 402:09075a3b15e3 332 void serial_clear(serial_t *obj)
mbed_official 402:09075a3b15e3 333 {
mbed_official 87:085cde657901 334 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 87:085cde657901 335 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TXE);
mbed_official 87:085cde657901 336 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
mbed_official 87:085cde657901 337 }
mbed_official 87:085cde657901 338
mbed_official 402:09075a3b15e3 339 void serial_pinout_tx(PinName tx)
mbed_official 402:09075a3b15e3 340 {
mbed_official 87:085cde657901 341 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 87:085cde657901 342 }
mbed_official 87:085cde657901 343
mbed_official 402:09075a3b15e3 344 void serial_break_set(serial_t *obj)
mbed_official 402:09075a3b15e3 345 {
mbed_official 87:085cde657901 346 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 87:085cde657901 347 HAL_LIN_SendBreak(&UartHandle);
mbed_official 87:085cde657901 348 }
mbed_official 87:085cde657901 349
mbed_official 402:09075a3b15e3 350 void serial_break_clear(serial_t *obj)
mbed_official 402:09075a3b15e3 351 {
mbed_official 87:085cde657901 352 }
mbed_official 172:2f4f8c56b261 353
mbed_official 172:2f4f8c56b261 354 #endif