Iftikhar Aziz / mbed-dev

4545

Dependents:   LSS_Rev_1

Fork of mbed-dev by Umar Naeem

targets/TARGET_STM/TARGET_STM32F3/serial_api.c@166:33361e55dd8c, 2017-08-23 (annotated)

Committer:
iftaziz
Date:
Wed Aug 23 10:32:38 2017 +0000
Revision:
166:33361e55dd8c
Parent:
150:02e0a0aed4ec 
r1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 149:156823d33999 1 /* mbed Microcontroller Library
<> 149:156823d33999 2 *******************************************************************************
<> 149:156823d33999 3 * Copyright (c) 2014, STMicroelectronics
<> 149:156823d33999 4 * All rights reserved.
<> 149:156823d33999 5 *
<> 149:156823d33999 6 * Redistribution and use in source and binary forms, with or without
<> 149:156823d33999 7 * modification, are permitted provided that the following conditions are met:
<> 149:156823d33999 8 *
<> 149:156823d33999 9 * 1. Redistributions of source code must retain the above copyright notice,
<> 149:156823d33999 10 * this list of conditions and the following disclaimer.
<> 149:156823d33999 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 149:156823d33999 12 * this list of conditions and the following disclaimer in the documentation
<> 149:156823d33999 13 * and/or other materials provided with the distribution.
<> 149:156823d33999 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 149:156823d33999 15 * may be used to endorse or promote products derived from this software
<> 149:156823d33999 16 * without specific prior written permission.
<> 149:156823d33999 17 *
<> 149:156823d33999 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 149:156823d33999 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 149:156823d33999 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 149:156823d33999 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 149:156823d33999 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 149:156823d33999 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 149:156823d33999 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 149:156823d33999 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 149:156823d33999 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 149:156823d33999 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 149:156823d33999 28 *******************************************************************************
<> 149:156823d33999 29 */
<> 149:156823d33999 30 #include "mbed_assert.h"
<> 149:156823d33999 31 #include "serial_api.h"
<> 149:156823d33999 32
<> 149:156823d33999 33 #if DEVICE_SERIAL
<> 149:156823d33999 34
<> 149:156823d33999 35 #include "cmsis.h"
<> 149:156823d33999 36 #include "pinmap.h"
<> 149:156823d33999 37 #include <string.h>
<> 149:156823d33999 38 #include "PeripheralPins.h"
<> 149:156823d33999 39 #include "mbed_error.h"
<> 149:156823d33999 40
<> 149:156823d33999 41 #define UART_NUM (5)
<> 149:156823d33999 42
<> 149:156823d33999 43 static uint32_t serial_irq_ids[UART_NUM] = {0};
<> 149:156823d33999 44 static UART_HandleTypeDef uart_handlers[UART_NUM];
<> 149:156823d33999 45
<> 149:156823d33999 46 static uart_irq_handler irq_handler;
<> 149:156823d33999 47
<> 149:156823d33999 48 int stdio_uart_inited = 0;
<> 149:156823d33999 49 serial_t stdio_uart;
<> 149:156823d33999 50
<> 149:156823d33999 51 #if DEVICE_SERIAL_ASYNCH
<> 149:156823d33999 52 #define SERIAL_S(obj) (&((obj)->serial))
<> 149:156823d33999 53 #else
<> 149:156823d33999 54 #define SERIAL_S(obj) (obj)
<> 149:156823d33999 55 #endif
<> 149:156823d33999 56
<> 149:156823d33999 57 static void init_uart(serial_t *obj)
<> 149:156823d33999 58 {
<> 149:156823d33999 59 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 60 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 61 huart->Instance = (USART_TypeDef *)(obj_s->uart);
<> 149:156823d33999 62
<> 149:156823d33999 63 huart->Init.BaudRate = obj_s->baudrate;
<> 149:156823d33999 64 huart->Init.WordLength = obj_s->databits;
<> 149:156823d33999 65 huart->Init.StopBits = obj_s->stopbits;
<> 149:156823d33999 66 huart->Init.Parity = obj_s->parity;
<> 149:156823d33999 67 #if DEVICE_SERIAL_FC
<> 149:156823d33999 68 huart->Init.HwFlowCtl = obj_s->hw_flow_ctl;
<> 149:156823d33999 69 #else
<> 149:156823d33999 70 huart->Init.HwFlowCtl = UART_HWCONTROL_NONE;
<> 149:156823d33999 71 #endif
<> 149:156823d33999 72 huart->TxXferCount = 0;
<> 149:156823d33999 73 huart->TxXferSize = 0;
<> 149:156823d33999 74 huart->RxXferCount = 0;
<> 149:156823d33999 75 huart->RxXferSize = 0;
<> 149:156823d33999 76
<> 149:156823d33999 77 if (obj_s->pin_rx == NC) {
<> 149:156823d33999 78 huart->Init.Mode = UART_MODE_TX;
<> 149:156823d33999 79 } else if (obj_s->pin_tx == NC) {
<> 149:156823d33999 80 huart->Init.Mode = UART_MODE_RX;
<> 149:156823d33999 81 } else {
<> 149:156823d33999 82 huart->Init.Mode = UART_MODE_TX_RX;
<> 149:156823d33999 83 }
<> 149:156823d33999 84
<> 149:156823d33999 85
<> 149:156823d33999 86 if (HAL_UART_Init(huart) != HAL_OK) {
<> 149:156823d33999 87 error("Cannot initialize UART\n");
<> 149:156823d33999 88 }
<> 149:156823d33999 89 }
<> 149:156823d33999 90
<> 149:156823d33999 91 void serial_init(serial_t *obj, PinName tx, PinName rx)
<> 149:156823d33999 92 {
<> 149:156823d33999 93 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 94
<> 149:156823d33999 95 // Determine the UART to use (UART_1, UART_2, ...)
<> 149:156823d33999 96 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
<> 149:156823d33999 97 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
<> 149:156823d33999 98
<> 149:156823d33999 99 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
<> 149:156823d33999 100 obj_s->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
<> 149:156823d33999 101 MBED_ASSERT(obj_s->uart != (UARTName)NC);
<> 149:156823d33999 102
<> 149:156823d33999 103 // Enable USART clock + switch to SystemClock
<> 149:156823d33999 104 if (obj_s->uart == UART_1) {
<> 149:156823d33999 105 __USART1_FORCE_RESET();
<> 149:156823d33999 106 __USART1_RELEASE_RESET();
<> 149:156823d33999 107 __USART1_CLK_ENABLE();
<> 149:156823d33999 108 #if defined(RCC_USART1CLKSOURCE_SYSCLK)
<> 149:156823d33999 109 __HAL_RCC_USART1_CONFIG(RCC_USART1CLKSOURCE_SYSCLK);
<> 149:156823d33999 110 #endif
<> 149:156823d33999 111 obj_s->index = 0;
<> 149:156823d33999 112 }
<> 149:156823d33999 113 #if defined(USART2_BASE)
<> 149:156823d33999 114 if (obj_s->uart == UART_2) {
<> 149:156823d33999 115 __USART2_FORCE_RESET();
<> 149:156823d33999 116 __USART2_RELEASE_RESET();
<> 149:156823d33999 117 __USART2_CLK_ENABLE();
<> 149:156823d33999 118 #if defined(RCC_USART2CLKSOURCE_SYSCLK)
<> 149:156823d33999 119 __HAL_RCC_USART2_CONFIG(RCC_USART2CLKSOURCE_SYSCLK);
<> 149:156823d33999 120 #endif
<> 149:156823d33999 121 obj_s->index = 1;
<> 149:156823d33999 122 }
<> 149:156823d33999 123 #endif
<> 149:156823d33999 124 #if defined(USART3_BASE)
<> 149:156823d33999 125 if (obj_s->uart == UART_3) {
<> 149:156823d33999 126 __USART3_FORCE_RESET();
<> 149:156823d33999 127 __USART3_RELEASE_RESET();
<> 149:156823d33999 128 __USART3_CLK_ENABLE();
<> 149:156823d33999 129 #if defined(RCC_USART3CLKSOURCE_SYSCLK)
<> 149:156823d33999 130 __HAL_RCC_USART3_CONFIG(RCC_USART3CLKSOURCE_SYSCLK);
<> 149:156823d33999 131 #endif
<> 149:156823d33999 132 obj_s->index = 2;
<> 149:156823d33999 133 }
<> 149:156823d33999 134 #endif
<> 149:156823d33999 135 #if defined(UART4_BASE)
<> 149:156823d33999 136 if (obj_s->uart == UART_4) {
<> 149:156823d33999 137 __UART4_FORCE_RESET();
<> 149:156823d33999 138 __UART4_RELEASE_RESET();
<> 149:156823d33999 139 __UART4_CLK_ENABLE();
<> 149:156823d33999 140 #if defined(RCC_UART4CLKSOURCE_SYSCLK)
<> 149:156823d33999 141 __HAL_RCC_UART4_CONFIG(RCC_UART4CLKSOURCE_SYSCLK);
<> 149:156823d33999 142 #endif
<> 149:156823d33999 143 obj_s->index = 3;
<> 149:156823d33999 144 }
<> 149:156823d33999 145 #endif
<> 149:156823d33999 146 #if defined(UART5_BASE)
<> 149:156823d33999 147 if (obj_s->uart == UART_5) {
<> 149:156823d33999 148 __HAL_RCC_UART5_FORCE_RESET();
<> 149:156823d33999 149 __HAL_RCC_UART5_RELEASE_RESET();
<> 149:156823d33999 150 __UART5_CLK_ENABLE();
<> 149:156823d33999 151 #if defined(RCC_UART5CLKSOURCE_SYSCLK)
<> 149:156823d33999 152 __HAL_RCC_UART5_CONFIG(RCC_UART5CLKSOURCE_SYSCLK);
<> 149:156823d33999 153 #endif
<> 149:156823d33999 154 obj_s->index = 4;
<> 149:156823d33999 155 }
<> 149:156823d33999 156 #endif
<> 149:156823d33999 157
<> 149:156823d33999 158 // Configure the UART pins
<> 149:156823d33999 159 pinmap_pinout(tx, PinMap_UART_TX);
<> 149:156823d33999 160 pinmap_pinout(rx, PinMap_UART_RX);
<> 149:156823d33999 161
<> 149:156823d33999 162 if (tx != NC) {
<> 149:156823d33999 163 pin_mode(tx, PullUp);
<> 149:156823d33999 164 }
<> 149:156823d33999 165 if (rx != NC) {
<> 149:156823d33999 166 pin_mode(rx, PullUp);
<> 149:156823d33999 167 }
<> 149:156823d33999 168
<> 149:156823d33999 169 // Configure UART
<> 149:156823d33999 170 obj_s->baudrate = 9600;
<> 149:156823d33999 171 obj_s->databits = UART_WORDLENGTH_8B;
<> 149:156823d33999 172 obj_s->stopbits = UART_STOPBITS_1;
<> 149:156823d33999 173 obj_s->parity = UART_PARITY_NONE;
<> 149:156823d33999 174
<> 149:156823d33999 175 #if DEVICE_SERIAL_FC
<> 149:156823d33999 176 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
<> 149:156823d33999 177 #endif
<> 149:156823d33999 178
<> 149:156823d33999 179 obj_s->pin_tx = tx;
<> 149:156823d33999 180 obj_s->pin_rx = rx;
<> 149:156823d33999 181
<> 149:156823d33999 182 init_uart(obj);
<> 149:156823d33999 183
<> 149:156823d33999 184 // For stdio management
<> 149:156823d33999 185 if (obj_s->uart == STDIO_UART) {
<> 149:156823d33999 186 stdio_uart_inited = 1;
<> 149:156823d33999 187 memcpy(&stdio_uart, obj, sizeof(serial_t));
<> 149:156823d33999 188 }
<> 149:156823d33999 189 }
<> 149:156823d33999 190
<> 149:156823d33999 191 void serial_free(serial_t *obj)
<> 149:156823d33999 192 {
<> 149:156823d33999 193 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 194
<> 149:156823d33999 195 // Reset UART and disable clock
<> 149:156823d33999 196 if (obj_s->uart == UART_1) {
<> 149:156823d33999 197 __USART1_FORCE_RESET();
<> 149:156823d33999 198 __USART1_RELEASE_RESET();
<> 149:156823d33999 199 __USART1_CLK_DISABLE();
<> 149:156823d33999 200 }
<> 149:156823d33999 201 if (obj_s->uart == UART_2) {
<> 149:156823d33999 202 __USART2_FORCE_RESET();
<> 149:156823d33999 203 __USART2_RELEASE_RESET();
<> 149:156823d33999 204 __USART2_CLK_DISABLE();
<> 149:156823d33999 205 }
<> 149:156823d33999 206 #if defined(USART3_BASE)
<> 149:156823d33999 207 if (obj_s->uart == UART_3) {
<> 149:156823d33999 208 __USART3_FORCE_RESET();
<> 149:156823d33999 209 __USART3_RELEASE_RESET();
<> 149:156823d33999 210 __USART3_CLK_DISABLE();
<> 149:156823d33999 211 }
<> 149:156823d33999 212 #endif
<> 149:156823d33999 213 #if defined(UART4_BASE)
<> 149:156823d33999 214 if (obj_s->uart == UART_4) {
<> 149:156823d33999 215 __UART4_FORCE_RESET();
<> 149:156823d33999 216 __UART4_RELEASE_RESET();
<> 149:156823d33999 217 __UART4_CLK_DISABLE();
<> 149:156823d33999 218 }
<> 149:156823d33999 219 #endif
<> 149:156823d33999 220 #if defined(UART5_BASE)
<> 149:156823d33999 221 if (obj_s->uart == UART_5) {
<> 149:156823d33999 222 __UART5_FORCE_RESET();
<> 149:156823d33999 223 __UART5_RELEASE_RESET();
<> 149:156823d33999 224 __UART5_CLK_DISABLE();
<> 149:156823d33999 225 }
<> 149:156823d33999 226 #endif
<> 149:156823d33999 227
<> 149:156823d33999 228 // Configure GPIOs
<> 149:156823d33999 229 pin_function(obj_s->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
<> 149:156823d33999 230 pin_function(obj_s->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
<> 149:156823d33999 231
<> 149:156823d33999 232 serial_irq_ids[obj_s->index] = 0;
<> 149:156823d33999 233 }
<> 149:156823d33999 234
<> 149:156823d33999 235 void serial_baud(serial_t *obj, int baudrate)
<> 149:156823d33999 236 {
<> 149:156823d33999 237 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 238
<> 149:156823d33999 239 obj_s->baudrate = baudrate;
<> 149:156823d33999 240 init_uart(obj);
<> 149:156823d33999 241 }
<> 149:156823d33999 242
<> 149:156823d33999 243 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
<> 149:156823d33999 244 {
<> 149:156823d33999 245 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 246
<> 149:156823d33999 247 if (data_bits == 9) {
<> 149:156823d33999 248 obj_s->databits = UART_WORDLENGTH_9B;
<> 149:156823d33999 249 } else {
<> 149:156823d33999 250 obj_s->databits = UART_WORDLENGTH_8B;
<> 149:156823d33999 251 }
<> 149:156823d33999 252
<> 149:156823d33999 253 switch (parity) {
<> 149:156823d33999 254 case ParityOdd:
<> 149:156823d33999 255 obj_s->parity = UART_PARITY_ODD;
<> 149:156823d33999 256 break;
<> 149:156823d33999 257 case ParityEven:
<> 149:156823d33999 258 obj_s->parity = UART_PARITY_EVEN;
<> 149:156823d33999 259 break;
<> 149:156823d33999 260 default: // ParityNone
<> 149:156823d33999 261 case ParityForced0: // unsupported!
<> 149:156823d33999 262 case ParityForced1: // unsupported!
<> 149:156823d33999 263 obj_s->parity = UART_PARITY_NONE;
<> 149:156823d33999 264 break;
<> 149:156823d33999 265 }
<> 149:156823d33999 266
<> 149:156823d33999 267 if (stop_bits == 2) {
<> 149:156823d33999 268 obj_s->stopbits = UART_STOPBITS_2;
<> 149:156823d33999 269 } else {
<> 149:156823d33999 270 obj_s->stopbits = UART_STOPBITS_1;
<> 149:156823d33999 271 }
<> 149:156823d33999 272
<> 149:156823d33999 273 init_uart(obj);
<> 149:156823d33999 274 }
<> 149:156823d33999 275
<> 149:156823d33999 276 /******************************************************************************
<> 149:156823d33999 277 * INTERRUPTS HANDLING
<> 149:156823d33999 278 ******************************************************************************/
<> 149:156823d33999 279
<> 149:156823d33999 280 static void uart_irq(int id)
<> 149:156823d33999 281 {
<> 149:156823d33999 282 UART_HandleTypeDef * huart = &uart_handlers[id];
<> 149:156823d33999 283
<> 149:156823d33999 284 if (serial_irq_ids[id] != 0) {
<> 149:156823d33999 285 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
<> 149:156823d33999 286 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
<> 149:156823d33999 287 irq_handler(serial_irq_ids[id], TxIrq);
<> 149:156823d33999 288 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
<> 149:156823d33999 289 }
<> 149:156823d33999 290 }
<> 149:156823d33999 291 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) {
<> 149:156823d33999 292 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_RXNE) != RESET) {
<> 149:156823d33999 293 irq_handler(serial_irq_ids[id], RxIrq);
<> 149:156823d33999 294 volatile uint32_t tmpval = huart->Instance->RDR; // Clear RXNE flag
<> 150:02e0a0aed4ec 295 UNUSED(tmpval);
<> 149:156823d33999 296 }
<> 149:156823d33999 297 }
<> 149:156823d33999 298 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
<> 149:156823d33999 299 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_ORE) != RESET) {
<> 149:156823d33999 300 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
<> 149:156823d33999 301 }
<> 149:156823d33999 302 }
<> 149:156823d33999 303 }
<> 149:156823d33999 304 }
<> 149:156823d33999 305
<> 149:156823d33999 306 static void uart1_irq(void)
<> 149:156823d33999 307 {
<> 149:156823d33999 308 uart_irq(0);
<> 149:156823d33999 309 }
<> 149:156823d33999 310
<> 149:156823d33999 311 static void uart2_irq(void)
<> 149:156823d33999 312 {
<> 149:156823d33999 313 uart_irq(1);
<> 149:156823d33999 314 }
<> 149:156823d33999 315
<> 149:156823d33999 316 #if defined(USART3_BASE)
<> 149:156823d33999 317 static void uart3_irq(void)
<> 149:156823d33999 318 {
<> 149:156823d33999 319 uart_irq(2);
<> 149:156823d33999 320 }
<> 149:156823d33999 321 #endif
<> 149:156823d33999 322
<> 149:156823d33999 323 #if defined(UART4_BASE)
<> 149:156823d33999 324 static void uart4_irq(void)
<> 149:156823d33999 325 {
<> 149:156823d33999 326 uart_irq(3);
<> 149:156823d33999 327 }
<> 149:156823d33999 328 #endif
<> 149:156823d33999 329
<> 149:156823d33999 330 #if defined(UART5_BASE)
<> 149:156823d33999 331 static void uart5_irq(void)
<> 149:156823d33999 332 {
<> 149:156823d33999 333 uart_irq(4);
<> 149:156823d33999 334 }
<> 149:156823d33999 335 #endif
<> 149:156823d33999 336
<> 149:156823d33999 337 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
<> 149:156823d33999 338 {
<> 149:156823d33999 339 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 340
<> 149:156823d33999 341 irq_handler = handler;
<> 149:156823d33999 342 serial_irq_ids[obj_s->index] = id;
<> 149:156823d33999 343 }
<> 149:156823d33999 344
<> 149:156823d33999 345 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
<> 149:156823d33999 346 {
<> 149:156823d33999 347 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 348 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 349 IRQn_Type irq_n = (IRQn_Type)0;
<> 149:156823d33999 350 uint32_t vector = 0;
<> 149:156823d33999 351
<> 149:156823d33999 352 if (obj_s->uart == UART_1) {
<> 149:156823d33999 353 irq_n = USART1_IRQn;
<> 149:156823d33999 354 vector = (uint32_t)&uart1_irq;
<> 149:156823d33999 355 }
<> 149:156823d33999 356
<> 149:156823d33999 357 if (obj_s->uart == UART_2) {
<> 149:156823d33999 358 irq_n = USART2_IRQn;
<> 149:156823d33999 359 vector = (uint32_t)&uart2_irq;
<> 149:156823d33999 360 }
<> 149:156823d33999 361
<> 149:156823d33999 362 #if defined(USART3_BASE)
<> 149:156823d33999 363 if (obj_s->uart == UART_3) {
<> 149:156823d33999 364 irq_n = USART3_IRQn;
<> 149:156823d33999 365 vector = (uint32_t)&uart3_irq;
<> 149:156823d33999 366 }
<> 149:156823d33999 367 #endif
<> 149:156823d33999 368
<> 149:156823d33999 369 #if defined(UART4_BASE)
<> 149:156823d33999 370 if (obj_s->uart == UART_4) {
<> 149:156823d33999 371 irq_n = UART4_IRQn;
<> 149:156823d33999 372 vector = (uint32_t)&uart4_irq;
<> 149:156823d33999 373 }
<> 149:156823d33999 374 #endif
<> 149:156823d33999 375
<> 149:156823d33999 376 #if defined(UART5_BASE)
<> 149:156823d33999 377 if (obj_s->uart == UART_5) {
<> 149:156823d33999 378 irq_n = UART5_IRQn;
<> 149:156823d33999 379 vector = (uint32_t)&uart5_irq;
<> 149:156823d33999 380 }
<> 149:156823d33999 381 #endif
<> 149:156823d33999 382
<> 149:156823d33999 383 if (enable) {
<> 149:156823d33999 384 if (irq == RxIrq) {
<> 149:156823d33999 385 __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
<> 149:156823d33999 386 } else { // TxIrq
<> 149:156823d33999 387 __HAL_UART_ENABLE_IT(huart, UART_IT_TC);
<> 149:156823d33999 388 }
<> 149:156823d33999 389 NVIC_SetVector(irq_n, vector);
<> 149:156823d33999 390 NVIC_EnableIRQ(irq_n);
<> 149:156823d33999 391
<> 149:156823d33999 392 } else { // disable
<> 149:156823d33999 393 int all_disabled = 0;
<> 149:156823d33999 394 if (irq == RxIrq) {
<> 149:156823d33999 395 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
<> 149:156823d33999 396 // Check if TxIrq is disabled too
<> 149:156823d33999 397 if ((huart->Instance->CR1 & USART_CR1_TXEIE) == 0) {
<> 149:156823d33999 398 all_disabled = 1;
<> 149:156823d33999 399 }
<> 149:156823d33999 400 } else { // TxIrq
<> 149:156823d33999 401 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
<> 149:156823d33999 402 // Check if RxIrq is disabled too
<> 149:156823d33999 403 if ((huart->Instance->CR1 & USART_CR1_RXNEIE) == 0) {
<> 149:156823d33999 404 all_disabled = 1;
<> 149:156823d33999 405 }
<> 149:156823d33999 406 }
<> 149:156823d33999 407
<> 149:156823d33999 408 if (all_disabled) {
<> 149:156823d33999 409 NVIC_DisableIRQ(irq_n);
<> 149:156823d33999 410 }
<> 149:156823d33999 411 }
<> 149:156823d33999 412 }
<> 149:156823d33999 413
<> 149:156823d33999 414 /******************************************************************************
<> 149:156823d33999 415 * READ/WRITE
<> 149:156823d33999 416 ******************************************************************************/
<> 149:156823d33999 417
<> 149:156823d33999 418 int serial_getc(serial_t *obj)
<> 149:156823d33999 419 {
<> 149:156823d33999 420 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 421 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 422
<> 149:156823d33999 423 while (!serial_readable(obj));
<> 149:156823d33999 424 if (obj_s->databits == UART_WORDLENGTH_8B) {
<> 149:156823d33999 425 return (int)(huart->Instance->RDR & (uint8_t)0xFF);
<> 149:156823d33999 426 } else {
<> 149:156823d33999 427 return (int)(huart->Instance->RDR & (uint16_t)0x1FF);
<> 149:156823d33999 428 }
<> 149:156823d33999 429 }
<> 149:156823d33999 430
<> 149:156823d33999 431 void serial_putc(serial_t *obj, int c)
<> 149:156823d33999 432 {
<> 149:156823d33999 433 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 434 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 435
<> 149:156823d33999 436 while (!serial_writable(obj));
<> 149:156823d33999 437 if (obj_s->databits == UART_WORDLENGTH_8B) {
<> 149:156823d33999 438 huart->Instance->TDR = (uint8_t)(c & (uint8_t)0xFF);
<> 149:156823d33999 439 } else {
<> 149:156823d33999 440 huart->Instance->TDR = (uint16_t)(c & (uint16_t)0x1FF);
<> 149:156823d33999 441 }
<> 149:156823d33999 442 }
<> 149:156823d33999 443
<> 149:156823d33999 444 int serial_readable(serial_t *obj)
<> 149:156823d33999 445 {
<> 149:156823d33999 446 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 447 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 448
<> 149:156823d33999 449 // Check if data is received
<> 149:156823d33999 450 return (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) ? 1 : 0;
<> 149:156823d33999 451 }
<> 149:156823d33999 452
<> 149:156823d33999 453 int serial_writable(serial_t *obj)
<> 149:156823d33999 454 {
<> 149:156823d33999 455 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 456 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 457
<> 149:156823d33999 458 // Check if data is transmitted
<> 149:156823d33999 459 return (__HAL_UART_GET_FLAG(huart, UART_FLAG_TXE) != RESET) ? 1 : 0;
<> 149:156823d33999 460 }
<> 149:156823d33999 461
<> 149:156823d33999 462 void serial_clear(serial_t *obj)
<> 149:156823d33999 463 {
<> 149:156823d33999 464 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 465 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 466
<> 149:156823d33999 467 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
<> 149:156823d33999 468 __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
<> 149:156823d33999 469 }
<> 149:156823d33999 470
<> 149:156823d33999 471 void serial_pinout_tx(PinName tx)
<> 149:156823d33999 472 {
<> 149:156823d33999 473 pinmap_pinout(tx, PinMap_UART_TX);
<> 149:156823d33999 474 }
<> 149:156823d33999 475
<> 149:156823d33999 476 void serial_break_set(serial_t *obj)
<> 149:156823d33999 477 {
<> 149:156823d33999 478 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 479 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 480
<> 149:156823d33999 481 HAL_LIN_SendBreak(huart);
<> 149:156823d33999 482 }
<> 149:156823d33999 483
<> 149:156823d33999 484 void serial_break_clear(serial_t *obj)
<> 149:156823d33999 485 {
<> 149:156823d33999 486 (void)obj;
<> 149:156823d33999 487 }
<> 149:156823d33999 488
<> 149:156823d33999 489 #if DEVICE_SERIAL_ASYNCH
<> 149:156823d33999 490
<> 149:156823d33999 491 /******************************************************************************
<> 149:156823d33999 492 * LOCAL HELPER FUNCTIONS
<> 149:156823d33999 493 ******************************************************************************/
<> 149:156823d33999 494
<> 149:156823d33999 495 /**
<> 149:156823d33999 496 * Configure the TX buffer for an asynchronous write serial transaction
<> 149:156823d33999 497 *
<> 149:156823d33999 498 * @param obj The serial object.
<> 149:156823d33999 499 * @param tx The buffer for sending.
<> 149:156823d33999 500 * @param tx_length The number of words to transmit.
<> 149:156823d33999 501 */
<> 149:156823d33999 502 static void serial_tx_buffer_set(serial_t *obj, void *tx, int tx_length, uint8_t width)
<> 149:156823d33999 503 {
<> 149:156823d33999 504 (void)width;
<> 149:156823d33999 505
<> 149:156823d33999 506 // Exit if a transmit is already on-going
<> 149:156823d33999 507 if (serial_tx_active(obj)) {
<> 149:156823d33999 508 return;
<> 149:156823d33999 509 }
<> 149:156823d33999 510
<> 149:156823d33999 511 obj->tx_buff.buffer = tx;
<> 149:156823d33999 512 obj->tx_buff.length = tx_length;
<> 149:156823d33999 513 obj->tx_buff.pos = 0;
<> 149:156823d33999 514 }
<> 149:156823d33999 515
<> 149:156823d33999 516 /**
<> 149:156823d33999 517 * Configure the RX buffer for an asynchronous write serial transaction
<> 149:156823d33999 518 *
<> 149:156823d33999 519 * @param obj The serial object.
<> 149:156823d33999 520 * @param tx The buffer for sending.
<> 149:156823d33999 521 * @param tx_length The number of words to transmit.
<> 149:156823d33999 522 */
<> 149:156823d33999 523 static void serial_rx_buffer_set(serial_t *obj, void *rx, int rx_length, uint8_t width)
<> 149:156823d33999 524 {
<> 149:156823d33999 525 (void)width;
<> 149:156823d33999 526
<> 149:156823d33999 527 // Exit if a reception is already on-going
<> 149:156823d33999 528 if (serial_rx_active(obj)) {
<> 149:156823d33999 529 return;
<> 149:156823d33999 530 }
<> 149:156823d33999 531
<> 149:156823d33999 532 obj->rx_buff.buffer = rx;
<> 149:156823d33999 533 obj->rx_buff.length = rx_length;
<> 149:156823d33999 534 obj->rx_buff.pos = 0;
<> 149:156823d33999 535 }
<> 149:156823d33999 536
<> 149:156823d33999 537 /**
<> 149:156823d33999 538 * Configure events
<> 149:156823d33999 539 *
<> 149:156823d33999 540 * @param obj The serial object
<> 149:156823d33999 541 * @param event The logical OR of the events to configure
<> 149:156823d33999 542 * @param enable Set to non-zero to enable events, or zero to disable them
<> 149:156823d33999 543 */
<> 149:156823d33999 544 static void serial_enable_event(serial_t *obj, int event, uint8_t enable)
<> 149:156823d33999 545 {
<> 149:156823d33999 546 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 547
<> 149:156823d33999 548 // Shouldn't have to enable interrupt here, just need to keep track of the requested events.
<> 149:156823d33999 549 if (enable) {
<> 149:156823d33999 550 obj_s->events |= event;
<> 149:156823d33999 551 } else {
<> 149:156823d33999 552 obj_s->events &= ~event;
<> 149:156823d33999 553 }
<> 149:156823d33999 554 }
<> 149:156823d33999 555
<> 149:156823d33999 556
<> 149:156823d33999 557 /**
<> 149:156823d33999 558 * Get index of serial object TX IRQ, relating it to the physical peripheral.
<> 149:156823d33999 559 *
<> 149:156823d33999 560 * @param obj pointer to serial object
<> 149:156823d33999 561 * @return internal NVIC TX IRQ index of U(S)ART peripheral
<> 149:156823d33999 562 */
<> 149:156823d33999 563 static IRQn_Type serial_get_irq_n(serial_t *obj)
<> 149:156823d33999 564 {
<> 149:156823d33999 565 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 566 IRQn_Type irq_n;
<> 149:156823d33999 567
<> 149:156823d33999 568 switch (obj_s->index) {
<> 149:156823d33999 569 case 0:
<> 149:156823d33999 570 irq_n = USART1_IRQn;
<> 149:156823d33999 571 break;
<> 149:156823d33999 572
<> 149:156823d33999 573 case 1:
<> 149:156823d33999 574 irq_n = USART2_IRQn;
<> 149:156823d33999 575 break;
<> 149:156823d33999 576
<> 149:156823d33999 577 #if defined(USART3_BASE)
<> 149:156823d33999 578 case 2:
<> 149:156823d33999 579 irq_n = USART3_IRQn;
<> 149:156823d33999 580 break;
<> 149:156823d33999 581 #endif
<> 150:02e0a0aed4ec 582 #if defined(UART4_BASE)
<> 149:156823d33999 583 case 3:
<> 150:02e0a0aed4ec 584 irq_n = UART4_IRQn;
<> 149:156823d33999 585 break;
<> 149:156823d33999 586 #endif
<> 150:02e0a0aed4ec 587 #if defined(UART5_BASE)
<> 149:156823d33999 588 case 4:
<> 150:02e0a0aed4ec 589 irq_n = UART5_IRQn;
<> 149:156823d33999 590 break;
<> 149:156823d33999 591 #endif
<> 149:156823d33999 592 default:
<> 149:156823d33999 593 irq_n = (IRQn_Type)0;
<> 149:156823d33999 594 }
<> 149:156823d33999 595
<> 149:156823d33999 596 return irq_n;
<> 149:156823d33999 597 }
<> 149:156823d33999 598
<> 149:156823d33999 599
<> 149:156823d33999 600 /******************************************************************************
<> 149:156823d33999 601 * MBED API FUNCTIONS
<> 149:156823d33999 602 ******************************************************************************/
<> 149:156823d33999 603
<> 149:156823d33999 604 /**
<> 149:156823d33999 605 * Begin asynchronous TX transfer. The used buffer is specified in the serial
<> 149:156823d33999 606 * object, tx_buff
<> 149:156823d33999 607 *
<> 149:156823d33999 608 * @param obj The serial object
<> 149:156823d33999 609 * @param tx The buffer for sending
<> 149:156823d33999 610 * @param tx_length The number of words to transmit
<> 149:156823d33999 611 * @param tx_width The bit width of buffer word
<> 149:156823d33999 612 * @param handler The serial handler
<> 149:156823d33999 613 * @param event The logical OR of events to be registered
<> 149:156823d33999 614 * @param hint A suggestion for how to use DMA with this transfer
<> 149:156823d33999 615 * @return Returns number of data transfered, or 0 otherwise
<> 149:156823d33999 616 */
<> 149:156823d33999 617 int serial_tx_asynch(serial_t *obj, const void *tx, size_t tx_length, uint8_t tx_width, uint32_t handler, uint32_t event, DMAUsage hint)
<> 149:156823d33999 618 {
<> 149:156823d33999 619 // TODO: DMA usage is currently ignored
<> 149:156823d33999 620 (void) hint;
<> 149:156823d33999 621
<> 149:156823d33999 622 // Check buffer is ok
<> 149:156823d33999 623 MBED_ASSERT(tx != (void*)0);
<> 149:156823d33999 624 MBED_ASSERT(tx_width == 8); // support only 8b width
<> 149:156823d33999 625
<> 149:156823d33999 626 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 627 UART_HandleTypeDef * huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 628
<> 149:156823d33999 629 if (tx_length == 0) {
<> 149:156823d33999 630 return 0;
<> 149:156823d33999 631 }
<> 149:156823d33999 632
<> 149:156823d33999 633 // Set up buffer
<> 149:156823d33999 634 serial_tx_buffer_set(obj, (void *)tx, tx_length, tx_width);
<> 149:156823d33999 635
<> 149:156823d33999 636 // Set up events
<> 149:156823d33999 637 serial_enable_event(obj, SERIAL_EVENT_TX_ALL, 0); // Clear all events
<> 149:156823d33999 638 serial_enable_event(obj, event, 1); // Set only the wanted events
<> 149:156823d33999 639
<> 149:156823d33999 640 // Enable interrupt
<> 149:156823d33999 641 IRQn_Type irq_n = serial_get_irq_n(obj);
<> 149:156823d33999 642 NVIC_ClearPendingIRQ(irq_n);
<> 149:156823d33999 643 NVIC_DisableIRQ(irq_n);
<> 149:156823d33999 644 NVIC_SetPriority(irq_n, 1);
<> 149:156823d33999 645 NVIC_SetVector(irq_n, (uint32_t)handler);
<> 149:156823d33999 646 NVIC_EnableIRQ(irq_n);
<> 149:156823d33999 647
<> 149:156823d33999 648 // the following function will enable UART_IT_TXE and error interrupts
<> 149:156823d33999 649 if (HAL_UART_Transmit_IT(huart, (uint8_t*)tx, tx_length) != HAL_OK) {
<> 149:156823d33999 650 return 0;
<> 149:156823d33999 651 }
<> 149:156823d33999 652
<> 149:156823d33999 653 return tx_length;
<> 149:156823d33999 654 }
<> 149:156823d33999 655
<> 149:156823d33999 656 /**
<> 149:156823d33999 657 * Begin asynchronous RX transfer (enable interrupt for data collecting)
<> 149:156823d33999 658 * The used buffer is specified in the serial object, rx_buff
<> 149:156823d33999 659 *
<> 149:156823d33999 660 * @param obj The serial object
<> 149:156823d33999 661 * @param rx The buffer for sending
<> 149:156823d33999 662 * @param rx_length The number of words to transmit
<> 149:156823d33999 663 * @param rx_width The bit width of buffer word
<> 149:156823d33999 664 * @param handler The serial handler
<> 149:156823d33999 665 * @param event The logical OR of events to be registered
<> 149:156823d33999 666 * @param handler The serial handler
<> 149:156823d33999 667 * @param char_match A character in range 0-254 to be matched
<> 149:156823d33999 668 * @param hint A suggestion for how to use DMA with this transfer
<> 149:156823d33999 669 */
<> 149:156823d33999 670 void serial_rx_asynch(serial_t *obj, void *rx, size_t rx_length, uint8_t rx_width, uint32_t handler, uint32_t event, uint8_t char_match, DMAUsage hint)
<> 149:156823d33999 671 {
<> 149:156823d33999 672 // TODO: DMA usage is currently ignored
<> 149:156823d33999 673 (void) hint;
<> 149:156823d33999 674
<> 149:156823d33999 675 /* Sanity check arguments */
<> 149:156823d33999 676 MBED_ASSERT(obj);
<> 149:156823d33999 677 MBED_ASSERT(rx != (void*)0);
<> 149:156823d33999 678 MBED_ASSERT(rx_width == 8); // support only 8b width
<> 149:156823d33999 679
<> 149:156823d33999 680 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 681 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 682
<> 149:156823d33999 683 serial_enable_event(obj, SERIAL_EVENT_RX_ALL, 0);
<> 149:156823d33999 684 serial_enable_event(obj, event, 1);
<> 149:156823d33999 685
<> 149:156823d33999 686 // set CharMatch
<> 149:156823d33999 687 obj->char_match = char_match;
<> 149:156823d33999 688
<> 149:156823d33999 689 serial_rx_buffer_set(obj, rx, rx_length, rx_width);
<> 149:156823d33999 690
<> 149:156823d33999 691 IRQn_Type irq_n = serial_get_irq_n(obj);
<> 149:156823d33999 692 NVIC_ClearPendingIRQ(irq_n);
<> 149:156823d33999 693 NVIC_DisableIRQ(irq_n);
<> 149:156823d33999 694 NVIC_SetPriority(irq_n, 0);
<> 149:156823d33999 695 NVIC_SetVector(irq_n, (uint32_t)handler);
<> 149:156823d33999 696 NVIC_EnableIRQ(irq_n);
<> 149:156823d33999 697
<> 149:156823d33999 698 // following HAL function will enable the RXNE interrupt + error interrupts
<> 149:156823d33999 699 HAL_UART_Receive_IT(huart, (uint8_t*)rx, rx_length);
<> 149:156823d33999 700 }
<> 149:156823d33999 701
<> 149:156823d33999 702 /**
<> 149:156823d33999 703 * Attempts to determine if the serial peripheral is already in use for TX
<> 149:156823d33999 704 *
<> 149:156823d33999 705 * @param obj The serial object
<> 149:156823d33999 706 * @return Non-zero if the TX transaction is ongoing, 0 otherwise
<> 149:156823d33999 707 */
<> 149:156823d33999 708 uint8_t serial_tx_active(serial_t *obj)
<> 149:156823d33999 709 {
<> 149:156823d33999 710 MBED_ASSERT(obj);
<> 149:156823d33999 711
<> 149:156823d33999 712 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 713 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 714
<> 149:156823d33999 715 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_TX) ? 1 : 0);
<> 149:156823d33999 716 }
<> 149:156823d33999 717
<> 149:156823d33999 718 /**
<> 149:156823d33999 719 * Attempts to determine if the serial peripheral is already in use for RX
<> 149:156823d33999 720 *
<> 149:156823d33999 721 * @param obj The serial object
<> 149:156823d33999 722 * @return Non-zero if the RX transaction is ongoing, 0 otherwise
<> 149:156823d33999 723 */
<> 149:156823d33999 724 uint8_t serial_rx_active(serial_t *obj)
<> 149:156823d33999 725 {
<> 149:156823d33999 726 MBED_ASSERT(obj);
<> 149:156823d33999 727
<> 149:156823d33999 728 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 729 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 730
<> 149:156823d33999 731 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_RX) ? 1 : 0);
<> 149:156823d33999 732 }
<> 149:156823d33999 733
<> 149:156823d33999 734 void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) {
<> 149:156823d33999 735 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
<> 149:156823d33999 736 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
<> 149:156823d33999 737 }
<> 149:156823d33999 738 }
<> 149:156823d33999 739
<> 149:156823d33999 740 void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart) {
<> 149:156823d33999 741 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
<> 149:156823d33999 742 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_PEF);
<> 149:156823d33999 743 }
<> 149:156823d33999 744 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
<> 149:156823d33999 745 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_FEF);
<> 149:156823d33999 746 }
<> 149:156823d33999 747 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) {
<> 149:156823d33999 748 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_NEF);
<> 149:156823d33999 749 }
<> 149:156823d33999 750 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
<> 149:156823d33999 751 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
<> 149:156823d33999 752 }
<> 149:156823d33999 753 }
<> 149:156823d33999 754
<> 149:156823d33999 755 /**
<> 149:156823d33999 756 * The asynchronous TX and RX handler.
<> 149:156823d33999 757 *
<> 149:156823d33999 758 * @param obj The serial object
<> 149:156823d33999 759 * @return Returns event flags if a TX/RX transfer termination condition was met or 0 otherwise
<> 149:156823d33999 760 */
<> 149:156823d33999 761 int serial_irq_handler_asynch(serial_t *obj)
<> 149:156823d33999 762 {
<> 149:156823d33999 763 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 764 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 765
<> 149:156823d33999 766 volatile int return_event = 0;
<> 149:156823d33999 767 uint8_t *buf = (uint8_t*)(obj->rx_buff.buffer);
<> 149:156823d33999 768 uint8_t i = 0;
<> 149:156823d33999 769
<> 149:156823d33999 770 // TX PART:
<> 149:156823d33999 771 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
<> 149:156823d33999 772 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
<> 149:156823d33999 773 // Return event SERIAL_EVENT_TX_COMPLETE if requested
<> 149:156823d33999 774 if ((obj_s->events & SERIAL_EVENT_TX_COMPLETE ) != 0) {
<> 149:156823d33999 775 return_event |= (SERIAL_EVENT_TX_COMPLETE & obj_s->events);
<> 149:156823d33999 776 }
<> 149:156823d33999 777 }
<> 149:156823d33999 778 }
<> 149:156823d33999 779
<> 149:156823d33999 780 // Handle error events
<> 149:156823d33999 781 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
<> 149:156823d33999 782 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
<> 149:156823d33999 783 return_event |= (SERIAL_EVENT_RX_PARITY_ERROR & obj_s->events);
<> 149:156823d33999 784 }
<> 149:156823d33999 785 }
<> 149:156823d33999 786
<> 149:156823d33999 787 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
<> 149:156823d33999 788 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
<> 149:156823d33999 789 return_event |= (SERIAL_EVENT_RX_FRAMING_ERROR & obj_s->events);
<> 149:156823d33999 790 }
<> 149:156823d33999 791 }
<> 149:156823d33999 792
<> 149:156823d33999 793 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
<> 149:156823d33999 794 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
<> 149:156823d33999 795 return_event |= (SERIAL_EVENT_RX_OVERRUN_ERROR & obj_s->events);
<> 149:156823d33999 796 }
<> 149:156823d33999 797 }
<> 149:156823d33999 798
<> 149:156823d33999 799 HAL_UART_IRQHandler(huart);
<> 149:156823d33999 800
<> 149:156823d33999 801 // Abort if an error occurs
<> 149:156823d33999 802 if (return_event & SERIAL_EVENT_RX_PARITY_ERROR ||
<> 149:156823d33999 803 return_event & SERIAL_EVENT_RX_FRAMING_ERROR ||
<> 149:156823d33999 804 return_event & SERIAL_EVENT_RX_OVERRUN_ERROR) {
<> 149:156823d33999 805 return return_event;
<> 149:156823d33999 806 }
<> 149:156823d33999 807
<> 149:156823d33999 808 //RX PART
<> 149:156823d33999 809 if (huart->RxXferSize != 0) {
<> 149:156823d33999 810 obj->rx_buff.pos = huart->RxXferSize - huart->RxXferCount;
<> 149:156823d33999 811 }
<> 149:156823d33999 812 if ((huart->RxXferCount == 0) && (obj->rx_buff.pos >= (obj->rx_buff.length - 1))) {
<> 149:156823d33999 813 return_event |= (SERIAL_EVENT_RX_COMPLETE & obj_s->events);
<> 149:156823d33999 814 }
<> 149:156823d33999 815
<> 149:156823d33999 816 // Check if char_match is present
<> 149:156823d33999 817 if (obj_s->events & SERIAL_EVENT_RX_CHARACTER_MATCH) {
<> 149:156823d33999 818 if (buf != NULL) {
<> 149:156823d33999 819 for (i = 0; i < obj->rx_buff.pos; i++) {
<> 149:156823d33999 820 if (buf[i] == obj->char_match) {
<> 149:156823d33999 821 obj->rx_buff.pos = i;
<> 149:156823d33999 822 return_event |= (SERIAL_EVENT_RX_CHARACTER_MATCH & obj_s->events);
<> 149:156823d33999 823 serial_rx_abort_asynch(obj);
<> 149:156823d33999 824 break;
<> 149:156823d33999 825 }
<> 149:156823d33999 826 }
<> 149:156823d33999 827 }
<> 149:156823d33999 828 }
<> 149:156823d33999 829
<> 149:156823d33999 830 return return_event;
<> 149:156823d33999 831 }
<> 149:156823d33999 832
<> 149:156823d33999 833 /**
<> 149:156823d33999 834 * Abort the ongoing TX transaction. It disables the enabled interupt for TX and
<> 149:156823d33999 835 * flush TX hardware buffer if TX FIFO is used
<> 149:156823d33999 836 *
<> 149:156823d33999 837 * @param obj The serial object
<> 149:156823d33999 838 */
<> 149:156823d33999 839 void serial_tx_abort_asynch(serial_t *obj)
<> 149:156823d33999 840 {
<> 149:156823d33999 841 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 842 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 843
<> 149:156823d33999 844 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
<> 149:156823d33999 845 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
<> 149:156823d33999 846
<> 149:156823d33999 847 // clear flags
<> 149:156823d33999 848 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
<> 149:156823d33999 849
<> 149:156823d33999 850 // reset states
<> 149:156823d33999 851 huart->TxXferCount = 0;
<> 149:156823d33999 852 // update handle state
<> 149:156823d33999 853 if(huart->gState == HAL_UART_STATE_BUSY_TX_RX) {
<> 149:156823d33999 854 huart->gState = HAL_UART_STATE_BUSY_RX;
<> 149:156823d33999 855 } else {
<> 149:156823d33999 856 huart->gState = HAL_UART_STATE_READY;
<> 149:156823d33999 857 }
<> 149:156823d33999 858 }
<> 149:156823d33999 859
<> 149:156823d33999 860 /**
<> 149:156823d33999 861 * Abort the ongoing RX transaction It disables the enabled interrupt for RX and
<> 149:156823d33999 862 * flush RX hardware buffer if RX FIFO is used
<> 149:156823d33999 863 *
<> 149:156823d33999 864 * @param obj The serial object
<> 149:156823d33999 865 */
<> 149:156823d33999 866 void serial_rx_abort_asynch(serial_t *obj)
<> 149:156823d33999 867 {
<> 149:156823d33999 868 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 869 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 870
<> 149:156823d33999 871 // disable interrupts
<> 149:156823d33999 872 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
<> 149:156823d33999 873 __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
<> 149:156823d33999 874 __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
<> 149:156823d33999 875
<> 149:156823d33999 876 // clear flags
<> 149:156823d33999 877 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_PEF | UART_CLEAR_FEF | UART_CLEAR_OREF);
<> 149:156823d33999 878 volatile uint32_t tmpval = huart->Instance->RDR; // Clear RXNE flag
<> 150:02e0a0aed4ec 879 UNUSED(tmpval);
<> 149:156823d33999 880
<> 149:156823d33999 881 // reset states
<> 149:156823d33999 882 huart->RxXferCount = 0;
<> 149:156823d33999 883 // update handle state
<> 149:156823d33999 884 if(huart->RxState == HAL_UART_STATE_BUSY_TX_RX) {
<> 149:156823d33999 885 huart->RxState = HAL_UART_STATE_BUSY_TX;
<> 149:156823d33999 886 } else {
<> 149:156823d33999 887 huart->RxState = HAL_UART_STATE_READY;
<> 149:156823d33999 888 }
<> 149:156823d33999 889 }
<> 149:156823d33999 890
<> 149:156823d33999 891 #endif
<> 149:156823d33999 892
<> 149:156823d33999 893 #if DEVICE_SERIAL_FC
<> 149:156823d33999 894
<> 149:156823d33999 895 /**
<> 149:156823d33999 896 * Set HW Control Flow
<> 149:156823d33999 897 * @param obj The serial object
<> 149:156823d33999 898 * @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS)
<> 149:156823d33999 899 * @param rxflow Pin for the rxflow
<> 149:156823d33999 900 * @param txflow Pin for the txflow
<> 149:156823d33999 901 */
<> 149:156823d33999 902 void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow)
<> 149:156823d33999 903 {
<> 149:156823d33999 904 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 905
<> 149:156823d33999 906 // Determine the UART to use (UART_1, UART_2, ...)
<> 149:156823d33999 907 UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS);
<> 149:156823d33999 908 UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS);
<> 149:156823d33999 909
<> 149:156823d33999 910 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
<> 149:156823d33999 911 obj_s->uart = (UARTName)pinmap_merge(uart_cts, uart_rts);
<> 149:156823d33999 912 MBED_ASSERT(obj_s->uart != (UARTName)NC);
<> 149:156823d33999 913
<> 149:156823d33999 914 if(type == FlowControlNone) {
<> 149:156823d33999 915 // Disable hardware flow control
<> 149:156823d33999 916 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
<> 149:156823d33999 917 }
<> 149:156823d33999 918 if (type == FlowControlRTS) {
<> 149:156823d33999 919 // Enable RTS
<> 149:156823d33999 920 MBED_ASSERT(uart_rts != (UARTName)NC);
<> 149:156823d33999 921 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS;
<> 149:156823d33999 922 obj_s->pin_rts = rxflow;
<> 149:156823d33999 923 // Enable the pin for RTS function
<> 149:156823d33999 924 pinmap_pinout(rxflow, PinMap_UART_RTS);
<> 149:156823d33999 925 }
<> 149:156823d33999 926 if (type == FlowControlCTS) {
<> 149:156823d33999 927 // Enable CTS
<> 149:156823d33999 928 MBED_ASSERT(uart_cts != (UARTName)NC);
<> 149:156823d33999 929 obj_s->hw_flow_ctl = UART_HWCONTROL_CTS;
<> 149:156823d33999 930 obj_s->pin_cts = txflow;
<> 149:156823d33999 931 // Enable the pin for CTS function
<> 149:156823d33999 932 pinmap_pinout(txflow, PinMap_UART_CTS);
<> 149:156823d33999 933 }
<> 149:156823d33999 934 if (type == FlowControlRTSCTS) {
<> 149:156823d33999 935 // Enable CTS & RTS
<> 149:156823d33999 936 MBED_ASSERT(uart_rts != (UARTName)NC);
<> 149:156823d33999 937 MBED_ASSERT(uart_cts != (UARTName)NC);
<> 149:156823d33999 938 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS_CTS;
<> 149:156823d33999 939 obj_s->pin_rts = rxflow;
<> 149:156823d33999 940 obj_s->pin_cts = txflow;
<> 149:156823d33999 941 // Enable the pin for CTS function
<> 149:156823d33999 942 pinmap_pinout(txflow, PinMap_UART_CTS);
<> 149:156823d33999 943 // Enable the pin for RTS function
<> 149:156823d33999 944 pinmap_pinout(rxflow, PinMap_UART_RTS);
<> 149:156823d33999 945 }
<> 149:156823d33999 946
<> 149:156823d33999 947 init_uart(obj);
<> 149:156823d33999 948 }
<> 149:156823d33999 949
<> 149:156823d33999 950 #endif
<> 149:156823d33999 951
<> 149:156823d33999 952 #endif