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targets/TARGET_STM/TARGET_STM32F2/serial_device.c@181:96ed750bd169, 2018-01-17 (annotated)

Committer:
Anna Bridge
Date:
Wed Jan 17 15:23:54 2018 +0000
Revision:
181:96ed750bd169
Parent:
178:d650f5d4c87a
Child:
182:57724642e740
mbed-dev libray. Release version 158

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 167:e84263d55307 1 /* mbed Microcontroller Library
AnnaBridge 167:e84263d55307 2 *******************************************************************************
Anna Bridge 181:96ed750bd169 3 * Copyright (c) 2017, STMicroelectronics
AnnaBridge 167:e84263d55307 4 * All rights reserved.
AnnaBridge 167:e84263d55307 5 *
AnnaBridge 167:e84263d55307 6 * Redistribution and use in source and binary forms, with or without
AnnaBridge 167:e84263d55307 7 * modification, are permitted provided that the following conditions are met:
AnnaBridge 167:e84263d55307 8 *
AnnaBridge 167:e84263d55307 9 * 1. Redistributions of source code must retain the above copyright notice,
AnnaBridge 167:e84263d55307 10 * this list of conditions and the following disclaimer.
AnnaBridge 167:e84263d55307 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
AnnaBridge 167:e84263d55307 12 * this list of conditions and the following disclaimer in the documentation
AnnaBridge 167:e84263d55307 13 * and/or other materials provided with the distribution.
AnnaBridge 167:e84263d55307 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
AnnaBridge 167:e84263d55307 15 * may be used to endorse or promote products derived from this software
AnnaBridge 167:e84263d55307 16 * without specific prior written permission.
AnnaBridge 167:e84263d55307 17 *
AnnaBridge 167:e84263d55307 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AnnaBridge 167:e84263d55307 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
AnnaBridge 167:e84263d55307 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
AnnaBridge 167:e84263d55307 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
AnnaBridge 167:e84263d55307 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
AnnaBridge 167:e84263d55307 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
AnnaBridge 167:e84263d55307 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
AnnaBridge 167:e84263d55307 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
AnnaBridge 167:e84263d55307 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
AnnaBridge 167:e84263d55307 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AnnaBridge 167:e84263d55307 28 *******************************************************************************
AnnaBridge 167:e84263d55307 29 */
AnnaBridge 167:e84263d55307 30
AnnaBridge 167:e84263d55307 31 #if DEVICE_SERIAL
AnnaBridge 167:e84263d55307 32
Anna Bridge 181:96ed750bd169 33 #include "serial_api_hal.h"
AnnaBridge 167:e84263d55307 34
Anna Bridge 181:96ed750bd169 35 #define UART_NUM (6)
AnnaBridge 167:e84263d55307 36
Anna Bridge 181:96ed750bd169 37 uint32_t serial_irq_ids[UART_NUM] = {0};
AnnaBridge 167:e84263d55307 38 UART_HandleTypeDef uart_handlers[UART_NUM];
AnnaBridge 167:e84263d55307 39
AnnaBridge 167:e84263d55307 40 static uart_irq_handler irq_handler;
AnnaBridge 167:e84263d55307 41
AnnaBridge 167:e84263d55307 42 /******************************************************************************
AnnaBridge 167:e84263d55307 43 * INTERRUPTS HANDLING
AnnaBridge 167:e84263d55307 44 ******************************************************************************/
AnnaBridge 167:e84263d55307 45
AnnaBridge 167:e84263d55307 46 static void uart_irq(int id)
AnnaBridge 167:e84263d55307 47 {
AnnaBridge 167:e84263d55307 48 UART_HandleTypeDef * huart = &uart_handlers[id];
AnnaBridge 167:e84263d55307 49
AnnaBridge 167:e84263d55307 50 if (serial_irq_ids[id] != 0) {
Kojto 171:19eb464bc2be 51 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TXE) != RESET) {
Kojto 171:19eb464bc2be 52 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TXE) != RESET) {
AnnaBridge 167:e84263d55307 53 irq_handler(serial_irq_ids[id], TxIrq);
AnnaBridge 167:e84263d55307 54 }
AnnaBridge 167:e84263d55307 55 }
AnnaBridge 167:e84263d55307 56 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) {
AnnaBridge 167:e84263d55307 57 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_RXNE) != RESET) {
AnnaBridge 167:e84263d55307 58 irq_handler(serial_irq_ids[id], RxIrq);
Kojto 171:19eb464bc2be 59 /* Flag has been cleared when reading the content */
AnnaBridge 167:e84263d55307 60 }
AnnaBridge 167:e84263d55307 61 }
AnnaBridge 167:e84263d55307 62 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 167:e84263d55307 63 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 178:d650f5d4c87a 64 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear ORE flag
AnnaBridge 167:e84263d55307 65 }
AnnaBridge 167:e84263d55307 66 }
AnnaBridge 167:e84263d55307 67 }
AnnaBridge 167:e84263d55307 68 }
AnnaBridge 167:e84263d55307 69
AnnaBridge 167:e84263d55307 70 static void uart1_irq(void)
AnnaBridge 167:e84263d55307 71 {
AnnaBridge 167:e84263d55307 72 uart_irq(0);
AnnaBridge 167:e84263d55307 73 }
AnnaBridge 167:e84263d55307 74
AnnaBridge 167:e84263d55307 75 static void uart2_irq(void)
AnnaBridge 167:e84263d55307 76 {
AnnaBridge 167:e84263d55307 77 uart_irq(1);
AnnaBridge 167:e84263d55307 78 }
AnnaBridge 167:e84263d55307 79
AnnaBridge 167:e84263d55307 80 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 81 static void uart3_irq(void)
AnnaBridge 167:e84263d55307 82 {
AnnaBridge 167:e84263d55307 83 uart_irq(2);
AnnaBridge 167:e84263d55307 84 }
AnnaBridge 167:e84263d55307 85 #endif
AnnaBridge 167:e84263d55307 86
AnnaBridge 167:e84263d55307 87 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 88 static void uart4_irq(void)
AnnaBridge 167:e84263d55307 89 {
AnnaBridge 167:e84263d55307 90 uart_irq(3);
AnnaBridge 167:e84263d55307 91 }
AnnaBridge 167:e84263d55307 92 #endif
AnnaBridge 167:e84263d55307 93
AnnaBridge 167:e84263d55307 94 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 95 static void uart5_irq(void)
AnnaBridge 167:e84263d55307 96 {
AnnaBridge 167:e84263d55307 97 uart_irq(4);
AnnaBridge 167:e84263d55307 98 }
AnnaBridge 167:e84263d55307 99 #endif
AnnaBridge 167:e84263d55307 100
AnnaBridge 167:e84263d55307 101 #if defined(USART6_BASE)
AnnaBridge 167:e84263d55307 102 static void uart6_irq(void)
AnnaBridge 167:e84263d55307 103 {
AnnaBridge 167:e84263d55307 104 uart_irq(5);
AnnaBridge 167:e84263d55307 105 }
AnnaBridge 167:e84263d55307 106 #endif
AnnaBridge 167:e84263d55307 107
AnnaBridge 167:e84263d55307 108 #if defined(UART7_BASE)
AnnaBridge 167:e84263d55307 109 static void uart7_irq(void)
AnnaBridge 167:e84263d55307 110 {
AnnaBridge 167:e84263d55307 111 uart_irq(6);
AnnaBridge 167:e84263d55307 112 }
AnnaBridge 167:e84263d55307 113 #endif
AnnaBridge 167:e84263d55307 114
AnnaBridge 167:e84263d55307 115 #if defined(UART8_BASE)
AnnaBridge 167:e84263d55307 116 static void uart8_irq(void)
AnnaBridge 167:e84263d55307 117 {
AnnaBridge 167:e84263d55307 118 uart_irq(7);
AnnaBridge 167:e84263d55307 119 }
AnnaBridge 167:e84263d55307 120 #endif
AnnaBridge 167:e84263d55307 121
AnnaBridge 167:e84263d55307 122 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
AnnaBridge 167:e84263d55307 123 {
AnnaBridge 167:e84263d55307 124 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 125
AnnaBridge 167:e84263d55307 126 irq_handler = handler;
AnnaBridge 167:e84263d55307 127 serial_irq_ids[obj_s->index] = id;
AnnaBridge 167:e84263d55307 128 }
AnnaBridge 167:e84263d55307 129
AnnaBridge 167:e84263d55307 130 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
AnnaBridge 167:e84263d55307 131 {
AnnaBridge 167:e84263d55307 132 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 133 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 134 IRQn_Type irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 135 uint32_t vector = 0;
AnnaBridge 167:e84263d55307 136
AnnaBridge 167:e84263d55307 137 switch (obj_s->index) {
AnnaBridge 167:e84263d55307 138 case 0:
AnnaBridge 167:e84263d55307 139 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 140 vector = (uint32_t)&uart1_irq;
AnnaBridge 167:e84263d55307 141 break;
AnnaBridge 167:e84263d55307 142
AnnaBridge 167:e84263d55307 143 case 1:
AnnaBridge 167:e84263d55307 144 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 145 vector = (uint32_t)&uart2_irq;
AnnaBridge 167:e84263d55307 146 break;
AnnaBridge 167:e84263d55307 147 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 148 case 2:
AnnaBridge 167:e84263d55307 149 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 150 vector = (uint32_t)&uart3_irq;
AnnaBridge 167:e84263d55307 151 break;
AnnaBridge 167:e84263d55307 152 #endif
AnnaBridge 167:e84263d55307 153 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 154 case 3:
AnnaBridge 167:e84263d55307 155 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 156 vector = (uint32_t)&uart4_irq;
AnnaBridge 167:e84263d55307 157 break;
AnnaBridge 167:e84263d55307 158 #endif
AnnaBridge 167:e84263d55307 159 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 160 case 4:
AnnaBridge 167:e84263d55307 161 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 162 vector = (uint32_t)&uart5_irq;
AnnaBridge 167:e84263d55307 163 break;
AnnaBridge 167:e84263d55307 164 #endif
AnnaBridge 167:e84263d55307 165 #if defined(USART6_BASE)
AnnaBridge 167:e84263d55307 166 case 5:
AnnaBridge 167:e84263d55307 167 irq_n = USART6_IRQn;
AnnaBridge 167:e84263d55307 168 vector = (uint32_t)&uart6_irq;
AnnaBridge 167:e84263d55307 169 break;
AnnaBridge 167:e84263d55307 170 #endif
AnnaBridge 167:e84263d55307 171 #if defined(UART7_BASE)
AnnaBridge 167:e84263d55307 172 case 6:
AnnaBridge 167:e84263d55307 173 irq_n = UART7_IRQn;
AnnaBridge 167:e84263d55307 174 vector = (uint32_t)&uart7_irq;
AnnaBridge 167:e84263d55307 175 break;
AnnaBridge 167:e84263d55307 176 #endif
AnnaBridge 167:e84263d55307 177 #if defined(UART8_BASE)
AnnaBridge 167:e84263d55307 178 case 7:
AnnaBridge 167:e84263d55307 179 irq_n = UART8_IRQn;
AnnaBridge 167:e84263d55307 180 vector = (uint32_t)&uart8_irq;
AnnaBridge 167:e84263d55307 181 break;
AnnaBridge 167:e84263d55307 182 #endif
AnnaBridge 167:e84263d55307 183 }
AnnaBridge 167:e84263d55307 184
AnnaBridge 167:e84263d55307 185 if (enable) {
AnnaBridge 167:e84263d55307 186 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 187 __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 188 } else { // TxIrq
Kojto 171:19eb464bc2be 189 __HAL_UART_ENABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 190 }
AnnaBridge 167:e84263d55307 191 NVIC_SetVector(irq_n, vector);
AnnaBridge 167:e84263d55307 192 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 193
AnnaBridge 167:e84263d55307 194 } else { // disable
AnnaBridge 167:e84263d55307 195 int all_disabled = 0;
AnnaBridge 167:e84263d55307 196 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 197 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 198 // Check if TxIrq is disabled too
AnnaBridge 167:e84263d55307 199 if ((huart->Instance->CR1 & USART_CR1_TXEIE) == 0) {
AnnaBridge 167:e84263d55307 200 all_disabled = 1;
AnnaBridge 167:e84263d55307 201 }
AnnaBridge 167:e84263d55307 202 } else { // TxIrq
Kojto 171:19eb464bc2be 203 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 204 // Check if RxIrq is disabled too
AnnaBridge 167:e84263d55307 205 if ((huart->Instance->CR1 & USART_CR1_RXNEIE) == 0) {
AnnaBridge 167:e84263d55307 206 all_disabled = 1;
AnnaBridge 167:e84263d55307 207 }
AnnaBridge 167:e84263d55307 208 }
AnnaBridge 167:e84263d55307 209
AnnaBridge 167:e84263d55307 210 if (all_disabled) {
AnnaBridge 167:e84263d55307 211 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 212 }
AnnaBridge 167:e84263d55307 213 }
AnnaBridge 167:e84263d55307 214 }
AnnaBridge 167:e84263d55307 215
AnnaBridge 167:e84263d55307 216 /******************************************************************************
AnnaBridge 167:e84263d55307 217 * READ/WRITE
AnnaBridge 167:e84263d55307 218 ******************************************************************************/
AnnaBridge 167:e84263d55307 219
AnnaBridge 167:e84263d55307 220 int serial_getc(serial_t *obj)
AnnaBridge 167:e84263d55307 221 {
AnnaBridge 167:e84263d55307 222 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 223 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 224
AnnaBridge 167:e84263d55307 225 while (!serial_readable(obj));
AnnaBridge 167:e84263d55307 226 return (int)(huart->Instance->DR & (uint16_t)0x1FF);
AnnaBridge 167:e84263d55307 227 }
AnnaBridge 167:e84263d55307 228
AnnaBridge 167:e84263d55307 229 void serial_putc(serial_t *obj, int c)
AnnaBridge 167:e84263d55307 230 {
AnnaBridge 167:e84263d55307 231 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 232 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 233
AnnaBridge 167:e84263d55307 234 while (!serial_writable(obj));
AnnaBridge 167:e84263d55307 235 huart->Instance->DR = (uint32_t)(c & (uint16_t)0x1FF);
AnnaBridge 167:e84263d55307 236 }
AnnaBridge 167:e84263d55307 237
AnnaBridge 167:e84263d55307 238 void serial_clear(serial_t *obj)
AnnaBridge 167:e84263d55307 239 {
AnnaBridge 167:e84263d55307 240 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 241 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 242
AnnaBridge 167:e84263d55307 243 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 244 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 245 }
AnnaBridge 167:e84263d55307 246
AnnaBridge 167:e84263d55307 247 void serial_break_set(serial_t *obj)
AnnaBridge 167:e84263d55307 248 {
AnnaBridge 167:e84263d55307 249 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 250 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 251
AnnaBridge 167:e84263d55307 252 HAL_LIN_SendBreak(huart);
AnnaBridge 167:e84263d55307 253 }
AnnaBridge 167:e84263d55307 254
AnnaBridge 167:e84263d55307 255 #if DEVICE_SERIAL_ASYNCH
AnnaBridge 167:e84263d55307 256
AnnaBridge 167:e84263d55307 257 /******************************************************************************
AnnaBridge 167:e84263d55307 258 * LOCAL HELPER FUNCTIONS
AnnaBridge 167:e84263d55307 259 ******************************************************************************/
AnnaBridge 167:e84263d55307 260
AnnaBridge 167:e84263d55307 261 /**
AnnaBridge 167:e84263d55307 262 * Configure the TX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 263 *
AnnaBridge 167:e84263d55307 264 * @param obj The serial object.
AnnaBridge 167:e84263d55307 265 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 266 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 267 */
AnnaBridge 167:e84263d55307 268 static void serial_tx_buffer_set(serial_t *obj, void *tx, int tx_length, uint8_t width)
AnnaBridge 167:e84263d55307 269 {
AnnaBridge 167:e84263d55307 270 (void)width;
AnnaBridge 167:e84263d55307 271
AnnaBridge 167:e84263d55307 272 // Exit if a transmit is already on-going
AnnaBridge 167:e84263d55307 273 if (serial_tx_active(obj)) {
AnnaBridge 167:e84263d55307 274 return;
AnnaBridge 167:e84263d55307 275 }
AnnaBridge 167:e84263d55307 276
AnnaBridge 167:e84263d55307 277 obj->tx_buff.buffer = tx;
AnnaBridge 167:e84263d55307 278 obj->tx_buff.length = tx_length;
AnnaBridge 167:e84263d55307 279 obj->tx_buff.pos = 0;
AnnaBridge 167:e84263d55307 280 }
AnnaBridge 167:e84263d55307 281
AnnaBridge 167:e84263d55307 282 /**
AnnaBridge 167:e84263d55307 283 * Configure the RX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 284 *
AnnaBridge 167:e84263d55307 285 * @param obj The serial object.
AnnaBridge 167:e84263d55307 286 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 287 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 288 */
AnnaBridge 167:e84263d55307 289 static void serial_rx_buffer_set(serial_t *obj, void *rx, int rx_length, uint8_t width)
AnnaBridge 167:e84263d55307 290 {
AnnaBridge 167:e84263d55307 291 (void)width;
AnnaBridge 167:e84263d55307 292
AnnaBridge 167:e84263d55307 293 // Exit if a reception is already on-going
AnnaBridge 167:e84263d55307 294 if (serial_rx_active(obj)) {
AnnaBridge 167:e84263d55307 295 return;
AnnaBridge 167:e84263d55307 296 }
AnnaBridge 167:e84263d55307 297
AnnaBridge 167:e84263d55307 298 obj->rx_buff.buffer = rx;
AnnaBridge 167:e84263d55307 299 obj->rx_buff.length = rx_length;
AnnaBridge 167:e84263d55307 300 obj->rx_buff.pos = 0;
AnnaBridge 167:e84263d55307 301 }
AnnaBridge 167:e84263d55307 302
AnnaBridge 167:e84263d55307 303 /**
AnnaBridge 167:e84263d55307 304 * Configure events
AnnaBridge 167:e84263d55307 305 *
AnnaBridge 167:e84263d55307 306 * @param obj The serial object
AnnaBridge 167:e84263d55307 307 * @param event The logical OR of the events to configure
AnnaBridge 167:e84263d55307 308 * @param enable Set to non-zero to enable events, or zero to disable them
AnnaBridge 167:e84263d55307 309 */
AnnaBridge 167:e84263d55307 310 static void serial_enable_event(serial_t *obj, int event, uint8_t enable)
AnnaBridge 167:e84263d55307 311 {
AnnaBridge 167:e84263d55307 312 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 313
AnnaBridge 167:e84263d55307 314 // Shouldn't have to enable interrupt here, just need to keep track of the requested events.
AnnaBridge 167:e84263d55307 315 if (enable) {
AnnaBridge 167:e84263d55307 316 obj_s->events |= event;
AnnaBridge 167:e84263d55307 317 } else {
AnnaBridge 167:e84263d55307 318 obj_s->events &= ~event;
AnnaBridge 167:e84263d55307 319 }
AnnaBridge 167:e84263d55307 320 }
AnnaBridge 167:e84263d55307 321
AnnaBridge 167:e84263d55307 322
AnnaBridge 167:e84263d55307 323 /**
AnnaBridge 167:e84263d55307 324 * Get index of serial object TX IRQ, relating it to the physical peripheral.
AnnaBridge 167:e84263d55307 325 *
AnnaBridge 167:e84263d55307 326 * @param obj pointer to serial object
AnnaBridge 167:e84263d55307 327 * @return internal NVIC TX IRQ index of U(S)ART peripheral
AnnaBridge 167:e84263d55307 328 */
AnnaBridge 167:e84263d55307 329 static IRQn_Type serial_get_irq_n(serial_t *obj)
AnnaBridge 167:e84263d55307 330 {
AnnaBridge 167:e84263d55307 331 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 332 IRQn_Type irq_n;
AnnaBridge 167:e84263d55307 333
AnnaBridge 167:e84263d55307 334 switch (obj_s->index) {
AnnaBridge 167:e84263d55307 335 #if defined(USART1_BASE)
AnnaBridge 167:e84263d55307 336 case 0:
AnnaBridge 167:e84263d55307 337 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 338 break;
AnnaBridge 167:e84263d55307 339 #endif
AnnaBridge 167:e84263d55307 340 #if defined(USART2_BASE)
AnnaBridge 167:e84263d55307 341 case 1:
AnnaBridge 167:e84263d55307 342 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 343 break;
AnnaBridge 167:e84263d55307 344 #endif
AnnaBridge 167:e84263d55307 345 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 346 case 2:
AnnaBridge 167:e84263d55307 347 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 348 break;
AnnaBridge 167:e84263d55307 349 #endif
AnnaBridge 167:e84263d55307 350 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 351 case 3:
AnnaBridge 167:e84263d55307 352 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 353 break;
AnnaBridge 167:e84263d55307 354 #endif
AnnaBridge 167:e84263d55307 355 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 356 case 4:
AnnaBridge 167:e84263d55307 357 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 358 break;
AnnaBridge 167:e84263d55307 359 #endif
AnnaBridge 167:e84263d55307 360 #if defined(USART6_BASE)
AnnaBridge 167:e84263d55307 361 case 5:
AnnaBridge 167:e84263d55307 362 irq_n = USART6_IRQn;
AnnaBridge 167:e84263d55307 363 break;
AnnaBridge 167:e84263d55307 364 #endif
AnnaBridge 167:e84263d55307 365 #if defined(UART7_BASE)
AnnaBridge 167:e84263d55307 366 case 6:
AnnaBridge 167:e84263d55307 367 irq_n = UART7_IRQn;
AnnaBridge 167:e84263d55307 368 break;
AnnaBridge 167:e84263d55307 369 #endif
AnnaBridge 167:e84263d55307 370 #if defined(UART8_BASE)
AnnaBridge 167:e84263d55307 371 case 7:
AnnaBridge 167:e84263d55307 372 irq_n = UART8_IRQn;
AnnaBridge 167:e84263d55307 373 break;
AnnaBridge 167:e84263d55307 374 #endif
AnnaBridge 167:e84263d55307 375 default:
AnnaBridge 167:e84263d55307 376 irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 377 }
AnnaBridge 167:e84263d55307 378
AnnaBridge 167:e84263d55307 379 return irq_n;
AnnaBridge 167:e84263d55307 380 }
AnnaBridge 167:e84263d55307 381
AnnaBridge 167:e84263d55307 382
AnnaBridge 167:e84263d55307 383 /******************************************************************************
AnnaBridge 167:e84263d55307 384 * MBED API FUNCTIONS
AnnaBridge 167:e84263d55307 385 ******************************************************************************/
AnnaBridge 167:e84263d55307 386
AnnaBridge 167:e84263d55307 387 /**
AnnaBridge 167:e84263d55307 388 * Begin asynchronous TX transfer. The used buffer is specified in the serial
AnnaBridge 167:e84263d55307 389 * object, tx_buff
AnnaBridge 167:e84263d55307 390 *
AnnaBridge 167:e84263d55307 391 * @param obj The serial object
AnnaBridge 167:e84263d55307 392 * @param tx The buffer for sending
AnnaBridge 167:e84263d55307 393 * @param tx_length The number of words to transmit
AnnaBridge 167:e84263d55307 394 * @param tx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 395 * @param handler The serial handler
AnnaBridge 167:e84263d55307 396 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 397 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 398 * @return Returns number of data transfered, or 0 otherwise
AnnaBridge 167:e84263d55307 399 */
AnnaBridge 167:e84263d55307 400 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)
AnnaBridge 167:e84263d55307 401 {
AnnaBridge 167:e84263d55307 402 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 403 (void) hint;
AnnaBridge 167:e84263d55307 404
AnnaBridge 167:e84263d55307 405 // Check buffer is ok
AnnaBridge 167:e84263d55307 406 MBED_ASSERT(tx != (void*)0);
AnnaBridge 167:e84263d55307 407 MBED_ASSERT(tx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 408
AnnaBridge 167:e84263d55307 409 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 410 UART_HandleTypeDef * huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 411
AnnaBridge 167:e84263d55307 412 if (tx_length == 0) {
AnnaBridge 167:e84263d55307 413 return 0;
AnnaBridge 167:e84263d55307 414 }
AnnaBridge 167:e84263d55307 415
AnnaBridge 167:e84263d55307 416 // Set up buffer
AnnaBridge 167:e84263d55307 417 serial_tx_buffer_set(obj, (void *)tx, tx_length, tx_width);
AnnaBridge 167:e84263d55307 418
AnnaBridge 167:e84263d55307 419 // Set up events
AnnaBridge 167:e84263d55307 420 serial_enable_event(obj, SERIAL_EVENT_TX_ALL, 0); // Clear all events
AnnaBridge 167:e84263d55307 421 serial_enable_event(obj, event, 1); // Set only the wanted events
AnnaBridge 167:e84263d55307 422
AnnaBridge 167:e84263d55307 423 // Enable interrupt
AnnaBridge 167:e84263d55307 424 IRQn_Type irq_n = serial_get_irq_n(obj);
AnnaBridge 167:e84263d55307 425 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 426 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 427 NVIC_SetPriority(irq_n, 1);
AnnaBridge 167:e84263d55307 428 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 429 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 430
AnnaBridge 167:e84263d55307 431 // the following function will enable UART_IT_TXE and error interrupts
AnnaBridge 167:e84263d55307 432 if (HAL_UART_Transmit_IT(huart, (uint8_t*)tx, tx_length) != HAL_OK) {
AnnaBridge 167:e84263d55307 433 return 0;
AnnaBridge 167:e84263d55307 434 }
AnnaBridge 167:e84263d55307 435
AnnaBridge 167:e84263d55307 436 return tx_length;
AnnaBridge 167:e84263d55307 437 }
AnnaBridge 167:e84263d55307 438
AnnaBridge 167:e84263d55307 439 /**
AnnaBridge 167:e84263d55307 440 * Begin asynchronous RX transfer (enable interrupt for data collecting)
AnnaBridge 167:e84263d55307 441 * The used buffer is specified in the serial object, rx_buff
AnnaBridge 167:e84263d55307 442 *
AnnaBridge 167:e84263d55307 443 * @param obj The serial object
AnnaBridge 167:e84263d55307 444 * @param rx The buffer for sending
AnnaBridge 167:e84263d55307 445 * @param rx_length The number of words to transmit
AnnaBridge 167:e84263d55307 446 * @param rx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 447 * @param handler The serial handler
AnnaBridge 167:e84263d55307 448 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 449 * @param handler The serial handler
AnnaBridge 167:e84263d55307 450 * @param char_match A character in range 0-254 to be matched
AnnaBridge 167:e84263d55307 451 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 452 */
AnnaBridge 167:e84263d55307 453 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)
AnnaBridge 167:e84263d55307 454 {
AnnaBridge 167:e84263d55307 455 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 456 (void) hint;
AnnaBridge 167:e84263d55307 457
AnnaBridge 167:e84263d55307 458 /* Sanity check arguments */
AnnaBridge 167:e84263d55307 459 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 460 MBED_ASSERT(rx != (void*)0);
AnnaBridge 167:e84263d55307 461 MBED_ASSERT(rx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 462
AnnaBridge 167:e84263d55307 463 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 464 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 465
AnnaBridge 167:e84263d55307 466 serial_enable_event(obj, SERIAL_EVENT_RX_ALL, 0);
AnnaBridge 167:e84263d55307 467 serial_enable_event(obj, event, 1);
AnnaBridge 167:e84263d55307 468
AnnaBridge 167:e84263d55307 469 // set CharMatch
AnnaBridge 167:e84263d55307 470 obj->char_match = char_match;
AnnaBridge 167:e84263d55307 471
AnnaBridge 167:e84263d55307 472 serial_rx_buffer_set(obj, rx, rx_length, rx_width);
AnnaBridge 167:e84263d55307 473
AnnaBridge 167:e84263d55307 474 IRQn_Type irq_n = serial_get_irq_n(obj);
AnnaBridge 167:e84263d55307 475 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 476 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 477 NVIC_SetPriority(irq_n, 0);
AnnaBridge 167:e84263d55307 478 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 479 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 480
AnnaBridge 167:e84263d55307 481 // following HAL function will enable the RXNE interrupt + error interrupts
AnnaBridge 167:e84263d55307 482 HAL_UART_Receive_IT(huart, (uint8_t*)rx, rx_length);
AnnaBridge 167:e84263d55307 483 }
AnnaBridge 167:e84263d55307 484
AnnaBridge 167:e84263d55307 485 /**
AnnaBridge 167:e84263d55307 486 * Attempts to determine if the serial peripheral is already in use for TX
AnnaBridge 167:e84263d55307 487 *
AnnaBridge 167:e84263d55307 488 * @param obj The serial object
AnnaBridge 167:e84263d55307 489 * @return Non-zero if the TX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 490 */
AnnaBridge 167:e84263d55307 491 uint8_t serial_tx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 492 {
AnnaBridge 167:e84263d55307 493 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 494
AnnaBridge 167:e84263d55307 495 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 496 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 497
AnnaBridge 167:e84263d55307 498 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_TX) ? 1 : 0);
AnnaBridge 167:e84263d55307 499 }
AnnaBridge 167:e84263d55307 500
AnnaBridge 167:e84263d55307 501 /**
AnnaBridge 167:e84263d55307 502 * Attempts to determine if the serial peripheral is already in use for RX
AnnaBridge 167:e84263d55307 503 *
AnnaBridge 167:e84263d55307 504 * @param obj The serial object
AnnaBridge 167:e84263d55307 505 * @return Non-zero if the RX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 506 */
AnnaBridge 167:e84263d55307 507 uint8_t serial_rx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 508 {
AnnaBridge 167:e84263d55307 509 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 510
AnnaBridge 167:e84263d55307 511 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 512 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 513
AnnaBridge 167:e84263d55307 514 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_RX) ? 1 : 0);
AnnaBridge 167:e84263d55307 515 }
AnnaBridge 167:e84263d55307 516
AnnaBridge 167:e84263d55307 517 void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 518 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 519 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 520 }
AnnaBridge 167:e84263d55307 521 }
AnnaBridge 167:e84263d55307 522
AnnaBridge 167:e84263d55307 523 void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 524 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 178:d650f5d4c87a 525 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear PE flag
AnnaBridge 167:e84263d55307 526 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
AnnaBridge 178:d650f5d4c87a 527 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear FE flag
AnnaBridge 167:e84263d55307 528 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) {
AnnaBridge 178:d650f5d4c87a 529 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear NE flag
AnnaBridge 167:e84263d55307 530 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 178:d650f5d4c87a 531 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear ORE flag
AnnaBridge 167:e84263d55307 532 }
AnnaBridge 167:e84263d55307 533 }
AnnaBridge 167:e84263d55307 534
AnnaBridge 167:e84263d55307 535 /**
AnnaBridge 167:e84263d55307 536 * The asynchronous TX and RX handler.
AnnaBridge 167:e84263d55307 537 *
AnnaBridge 167:e84263d55307 538 * @param obj The serial object
AnnaBridge 167:e84263d55307 539 * @return Returns event flags if a TX/RX transfer termination condition was met or 0 otherwise
AnnaBridge 167:e84263d55307 540 */
AnnaBridge 167:e84263d55307 541 int serial_irq_handler_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 542 {
AnnaBridge 167:e84263d55307 543 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 544 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 545
AnnaBridge 167:e84263d55307 546 volatile int return_event = 0;
AnnaBridge 167:e84263d55307 547 uint8_t *buf = (uint8_t*)(obj->rx_buff.buffer);
AnnaBridge 167:e84263d55307 548 uint8_t i = 0;
AnnaBridge 167:e84263d55307 549
AnnaBridge 167:e84263d55307 550 // TX PART:
AnnaBridge 167:e84263d55307 551 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 552 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
AnnaBridge 167:e84263d55307 553 // Return event SERIAL_EVENT_TX_COMPLETE if requested
AnnaBridge 167:e84263d55307 554 if ((obj_s->events & SERIAL_EVENT_TX_COMPLETE ) != 0) {
AnnaBridge 167:e84263d55307 555 return_event |= (SERIAL_EVENT_TX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 556 }
AnnaBridge 167:e84263d55307 557 }
AnnaBridge 167:e84263d55307 558 }
AnnaBridge 167:e84263d55307 559
AnnaBridge 167:e84263d55307 560 // Handle error events
AnnaBridge 167:e84263d55307 561 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 167:e84263d55307 562 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 563 return_event |= (SERIAL_EVENT_RX_PARITY_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 564 }
AnnaBridge 167:e84263d55307 565 }
AnnaBridge 167:e84263d55307 566
AnnaBridge 167:e84263d55307 567 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
AnnaBridge 167:e84263d55307 568 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 569 return_event |= (SERIAL_EVENT_RX_FRAMING_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 570 }
AnnaBridge 167:e84263d55307 571 }
AnnaBridge 167:e84263d55307 572
AnnaBridge 167:e84263d55307 573 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 167:e84263d55307 574 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 575 return_event |= (SERIAL_EVENT_RX_OVERRUN_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 576 }
AnnaBridge 167:e84263d55307 577 }
AnnaBridge 167:e84263d55307 578
AnnaBridge 167:e84263d55307 579 HAL_UART_IRQHandler(huart);
AnnaBridge 167:e84263d55307 580
AnnaBridge 167:e84263d55307 581 // Abort if an error occurs
AnnaBridge 178:d650f5d4c87a 582 if ((return_event & SERIAL_EVENT_RX_PARITY_ERROR) ||
AnnaBridge 178:d650f5d4c87a 583 (return_event & SERIAL_EVENT_RX_FRAMING_ERROR) ||
AnnaBridge 178:d650f5d4c87a 584 (return_event & SERIAL_EVENT_RX_OVERRUN_ERROR)) {
AnnaBridge 167:e84263d55307 585 return return_event;
AnnaBridge 167:e84263d55307 586 }
AnnaBridge 167:e84263d55307 587
AnnaBridge 167:e84263d55307 588 //RX PART
AnnaBridge 167:e84263d55307 589 if (huart->RxXferSize != 0) {
AnnaBridge 167:e84263d55307 590 obj->rx_buff.pos = huart->RxXferSize - huart->RxXferCount;
AnnaBridge 167:e84263d55307 591 }
AnnaBridge 167:e84263d55307 592 if ((huart->RxXferCount == 0) && (obj->rx_buff.pos >= (obj->rx_buff.length - 1))) {
AnnaBridge 167:e84263d55307 593 return_event |= (SERIAL_EVENT_RX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 594 }
AnnaBridge 167:e84263d55307 595
AnnaBridge 167:e84263d55307 596 // Check if char_match is present
AnnaBridge 167:e84263d55307 597 if (obj_s->events & SERIAL_EVENT_RX_CHARACTER_MATCH) {
AnnaBridge 167:e84263d55307 598 if (buf != NULL) {
AnnaBridge 167:e84263d55307 599 for (i = 0; i < obj->rx_buff.pos; i++) {
AnnaBridge 167:e84263d55307 600 if (buf[i] == obj->char_match) {
AnnaBridge 167:e84263d55307 601 obj->rx_buff.pos = i;
AnnaBridge 167:e84263d55307 602 return_event |= (SERIAL_EVENT_RX_CHARACTER_MATCH & obj_s->events);
AnnaBridge 167:e84263d55307 603 serial_rx_abort_asynch(obj);
AnnaBridge 167:e84263d55307 604 break;
AnnaBridge 167:e84263d55307 605 }
AnnaBridge 167:e84263d55307 606 }
AnnaBridge 167:e84263d55307 607 }
AnnaBridge 167:e84263d55307 608 }
AnnaBridge 167:e84263d55307 609
AnnaBridge 167:e84263d55307 610 return return_event;
AnnaBridge 167:e84263d55307 611 }
AnnaBridge 167:e84263d55307 612
AnnaBridge 167:e84263d55307 613 /**
AnnaBridge 167:e84263d55307 614 * Abort the ongoing TX transaction. It disables the enabled interupt for TX and
AnnaBridge 167:e84263d55307 615 * flush TX hardware buffer if TX FIFO is used
AnnaBridge 167:e84263d55307 616 *
AnnaBridge 167:e84263d55307 617 * @param obj The serial object
AnnaBridge 167:e84263d55307 618 */
AnnaBridge 167:e84263d55307 619 void serial_tx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 620 {
AnnaBridge 167:e84263d55307 621 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 622 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 623
AnnaBridge 167:e84263d55307 624 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
AnnaBridge 167:e84263d55307 625 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 626
AnnaBridge 167:e84263d55307 627 // clear flags
AnnaBridge 167:e84263d55307 628 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 629
AnnaBridge 167:e84263d55307 630 // reset states
AnnaBridge 167:e84263d55307 631 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 632 // update handle state
AnnaBridge 167:e84263d55307 633 if(huart->gState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 634 huart->gState = HAL_UART_STATE_BUSY_RX;
AnnaBridge 167:e84263d55307 635 } else {
AnnaBridge 167:e84263d55307 636 huart->gState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 637 }
AnnaBridge 167:e84263d55307 638 }
AnnaBridge 167:e84263d55307 639
AnnaBridge 167:e84263d55307 640 /**
AnnaBridge 167:e84263d55307 641 * Abort the ongoing RX transaction It disables the enabled interrupt for RX and
AnnaBridge 167:e84263d55307 642 * flush RX hardware buffer if RX FIFO is used
AnnaBridge 167:e84263d55307 643 *
AnnaBridge 167:e84263d55307 644 * @param obj The serial object
AnnaBridge 167:e84263d55307 645 */
AnnaBridge 167:e84263d55307 646 void serial_rx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 647 {
AnnaBridge 167:e84263d55307 648 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 649 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 650
AnnaBridge 167:e84263d55307 651 // disable interrupts
AnnaBridge 167:e84263d55307 652 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 653 __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
AnnaBridge 167:e84263d55307 654 __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
AnnaBridge 167:e84263d55307 655
AnnaBridge 167:e84263d55307 656 // clear flags
AnnaBridge 167:e84263d55307 657 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_RXNE);
AnnaBridge 178:d650f5d4c87a 658 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear error flags
AnnaBridge 167:e84263d55307 659
AnnaBridge 167:e84263d55307 660 // reset states
AnnaBridge 167:e84263d55307 661 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 662 // update handle state
AnnaBridge 167:e84263d55307 663 if(huart->RxState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 664 huart->RxState = HAL_UART_STATE_BUSY_TX;
AnnaBridge 167:e84263d55307 665 } else {
AnnaBridge 167:e84263d55307 666 huart->RxState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 667 }
AnnaBridge 167:e84263d55307 668 }
AnnaBridge 167:e84263d55307 669
Anna Bridge 181:96ed750bd169 670 #endif /* DEVICE_SERIAL_ASYNCH */
AnnaBridge 167:e84263d55307 671
AnnaBridge 167:e84263d55307 672 #if DEVICE_SERIAL_FC
AnnaBridge 167:e84263d55307 673
AnnaBridge 167:e84263d55307 674 /**
AnnaBridge 167:e84263d55307 675 * Set HW Control Flow
AnnaBridge 167:e84263d55307 676 * @param obj The serial object
AnnaBridge 167:e84263d55307 677 * @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS)
AnnaBridge 167:e84263d55307 678 * @param rxflow Pin for the rxflow
AnnaBridge 167:e84263d55307 679 * @param txflow Pin for the txflow
AnnaBridge 167:e84263d55307 680 */
AnnaBridge 167:e84263d55307 681 void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow)
AnnaBridge 167:e84263d55307 682 {
AnnaBridge 167:e84263d55307 683 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 684
AnnaBridge 167:e84263d55307 685 // Determine the UART to use (UART_1, UART_2, ...)
AnnaBridge 167:e84263d55307 686 UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 687 UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 688
AnnaBridge 167:e84263d55307 689 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
AnnaBridge 167:e84263d55307 690 obj_s->uart = (UARTName)pinmap_merge(uart_cts, uart_rts);
AnnaBridge 167:e84263d55307 691 MBED_ASSERT(obj_s->uart != (UARTName)NC);
AnnaBridge 167:e84263d55307 692
AnnaBridge 167:e84263d55307 693 if(type == FlowControlNone) {
AnnaBridge 167:e84263d55307 694 // Disable hardware flow control
AnnaBridge 167:e84263d55307 695 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
AnnaBridge 167:e84263d55307 696 }
AnnaBridge 167:e84263d55307 697 if (type == FlowControlRTS) {
AnnaBridge 167:e84263d55307 698 // Enable RTS
AnnaBridge 167:e84263d55307 699 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 700 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS;
AnnaBridge 167:e84263d55307 701 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 702 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 703 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 704 }
AnnaBridge 167:e84263d55307 705 if (type == FlowControlCTS) {
AnnaBridge 167:e84263d55307 706 // Enable CTS
AnnaBridge 167:e84263d55307 707 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 708 obj_s->hw_flow_ctl = UART_HWCONTROL_CTS;
AnnaBridge 167:e84263d55307 709 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 710 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 711 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 712 }
AnnaBridge 167:e84263d55307 713 if (type == FlowControlRTSCTS) {
AnnaBridge 167:e84263d55307 714 // Enable CTS & RTS
AnnaBridge 167:e84263d55307 715 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 716 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 717 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS_CTS;
AnnaBridge 167:e84263d55307 718 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 719 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 720 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 721 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 722 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 723 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 724 }
AnnaBridge 167:e84263d55307 725
AnnaBridge 167:e84263d55307 726 init_uart(obj);
AnnaBridge 167:e84263d55307 727 }
AnnaBridge 167:e84263d55307 728
Anna Bridge 181:96ed750bd169 729 #endif /* DEVICE_SERIAL_FC */
AnnaBridge 167:e84263d55307 730
Anna Bridge 181:96ed750bd169 731 #endif /* DEVICE_SERIAL */