mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_STM/TARGET_STM32F7/serial_device.c@186:707f6e361f3e, 2018-06-22 (annotated)

Committer:
Anna Bridge
Date:
Fri Jun 22 16:45:37 2018 +0100
Revision:
186:707f6e361f3e
Parent:
181:57724642e740
Child:
187:0387e8f68319
mbed-dev library. Release version 162

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 167:e84263d55307 1 /* mbed Microcontroller Library
AnnaBridge 167:e84263d55307 2 *******************************************************************************
Anna Bridge 180:96ed750bd169 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 180:96ed750bd169 33 #include "serial_api_hal.h"
AnnaBridge 167:e84263d55307 34
AnnaBridge 167:e84263d55307 35 #define UART_NUM (8)
Anna Bridge 180:96ed750bd169 36 uint32_t serial_irq_ids[UART_NUM] = {0};
AnnaBridge 167:e84263d55307 37 UART_HandleTypeDef uart_handlers[UART_NUM];
AnnaBridge 167:e84263d55307 38
AnnaBridge 167:e84263d55307 39 static uart_irq_handler irq_handler;
AnnaBridge 167:e84263d55307 40
AnnaBridge 181:57724642e740 41 // Defined in serial_api.c
Anna Bridge 186:707f6e361f3e 42 extern int8_t get_uart_index(UARTName uart_name);
AnnaBridge 181:57724642e740 43
AnnaBridge 167:e84263d55307 44 /******************************************************************************
AnnaBridge 167:e84263d55307 45 * INTERRUPTS HANDLING
AnnaBridge 167:e84263d55307 46 ******************************************************************************/
AnnaBridge 167:e84263d55307 47
AnnaBridge 181:57724642e740 48 static void uart_irq(UARTName uart_name)
AnnaBridge 167:e84263d55307 49 {
AnnaBridge 181:57724642e740 50 int8_t id = get_uart_index(uart_name);
AnnaBridge 181:57724642e740 51
AnnaBridge 181:57724642e740 52 if (id >= 0) {
AnnaBridge 181:57724642e740 53 UART_HandleTypeDef * huart = &uart_handlers[id];
AnnaBridge 181:57724642e740 54 if (serial_irq_ids[id] != 0) {
AnnaBridge 181:57724642e740 55 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TXE) != RESET) {
AnnaBridge 181:57724642e740 56 if (__HAL_UART_GET_IT(huart, UART_IT_TXE) != RESET) {
AnnaBridge 181:57724642e740 57 irq_handler(serial_irq_ids[id], TxIrq);
AnnaBridge 181:57724642e740 58 }
AnnaBridge 167:e84263d55307 59 }
AnnaBridge 181:57724642e740 60 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) {
AnnaBridge 181:57724642e740 61 if (__HAL_UART_GET_IT(huart, UART_IT_RXNE) != RESET) {
AnnaBridge 181:57724642e740 62 irq_handler(serial_irq_ids[id], RxIrq);
AnnaBridge 181:57724642e740 63 /* Flag has been cleared when reading the content */
AnnaBridge 181:57724642e740 64 }
AnnaBridge 167:e84263d55307 65 }
AnnaBridge 181:57724642e740 66 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 181:57724642e740 67 if (__HAL_UART_GET_IT(huart, UART_IT_ORE) != RESET) {
AnnaBridge 181:57724642e740 68 __HAL_UART_CLEAR_IT(huart, UART_CLEAR_OREF);
AnnaBridge 181:57724642e740 69 }
AnnaBridge 167:e84263d55307 70 }
AnnaBridge 167:e84263d55307 71 }
AnnaBridge 167:e84263d55307 72 }
AnnaBridge 167:e84263d55307 73 }
AnnaBridge 167:e84263d55307 74
AnnaBridge 181:57724642e740 75 #if defined(USART1_BASE)
AnnaBridge 167:e84263d55307 76 static void uart1_irq(void)
AnnaBridge 167:e84263d55307 77 {
AnnaBridge 181:57724642e740 78 uart_irq(UART_1);
AnnaBridge 167:e84263d55307 79 }
AnnaBridge 181:57724642e740 80 #endif
AnnaBridge 167:e84263d55307 81
AnnaBridge 181:57724642e740 82 #if defined(USART2_BASE)
AnnaBridge 167:e84263d55307 83 static void uart2_irq(void)
AnnaBridge 167:e84263d55307 84 {
AnnaBridge 181:57724642e740 85 uart_irq(UART_2);
AnnaBridge 167:e84263d55307 86 }
AnnaBridge 181:57724642e740 87 #endif
AnnaBridge 167:e84263d55307 88
AnnaBridge 167:e84263d55307 89 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 90 static void uart3_irq(void)
AnnaBridge 167:e84263d55307 91 {
AnnaBridge 181:57724642e740 92 uart_irq(UART_3);
AnnaBridge 167:e84263d55307 93 }
AnnaBridge 167:e84263d55307 94 #endif
AnnaBridge 167:e84263d55307 95
AnnaBridge 167:e84263d55307 96 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 97 static void uart4_irq(void)
AnnaBridge 167:e84263d55307 98 {
AnnaBridge 181:57724642e740 99 uart_irq(UART_4);
AnnaBridge 167:e84263d55307 100 }
AnnaBridge 167:e84263d55307 101 #endif
AnnaBridge 167:e84263d55307 102
AnnaBridge 167:e84263d55307 103 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 104 static void uart5_irq(void)
AnnaBridge 167:e84263d55307 105 {
AnnaBridge 181:57724642e740 106 uart_irq(UART_5);
AnnaBridge 167:e84263d55307 107 }
AnnaBridge 167:e84263d55307 108 #endif
AnnaBridge 167:e84263d55307 109
AnnaBridge 181:57724642e740 110 #if defined(USART6_BASE)
AnnaBridge 167:e84263d55307 111 static void uart6_irq(void)
AnnaBridge 167:e84263d55307 112 {
AnnaBridge 181:57724642e740 113 uart_irq(UART_6);
AnnaBridge 167:e84263d55307 114 }
AnnaBridge 181:57724642e740 115 #endif
AnnaBridge 167:e84263d55307 116
AnnaBridge 167:e84263d55307 117 #if defined(UART7_BASE)
AnnaBridge 167:e84263d55307 118 static void uart7_irq(void)
AnnaBridge 167:e84263d55307 119 {
AnnaBridge 181:57724642e740 120 uart_irq(UART_7);
AnnaBridge 167:e84263d55307 121 }
AnnaBridge 167:e84263d55307 122 #endif
AnnaBridge 167:e84263d55307 123
AnnaBridge 167:e84263d55307 124 #if defined(UART8_BASE)
AnnaBridge 167:e84263d55307 125 static void uart8_irq(void)
AnnaBridge 167:e84263d55307 126 {
AnnaBridge 181:57724642e740 127 uart_irq(UART_8);
AnnaBridge 167:e84263d55307 128 }
AnnaBridge 167:e84263d55307 129 #endif
AnnaBridge 167:e84263d55307 130
AnnaBridge 167:e84263d55307 131 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
AnnaBridge 167:e84263d55307 132 {
AnnaBridge 167:e84263d55307 133 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 134
AnnaBridge 167:e84263d55307 135 irq_handler = handler;
AnnaBridge 167:e84263d55307 136 serial_irq_ids[obj_s->index] = id;
AnnaBridge 167:e84263d55307 137 }
AnnaBridge 167:e84263d55307 138
AnnaBridge 167:e84263d55307 139 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
AnnaBridge 167:e84263d55307 140 {
AnnaBridge 167:e84263d55307 141 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 142 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 143 IRQn_Type irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 144 uint32_t vector = 0;
AnnaBridge 167:e84263d55307 145
AnnaBridge 167:e84263d55307 146 switch (obj_s->uart) {
AnnaBridge 181:57724642e740 147 #if defined(USART1_BASE)
AnnaBridge 167:e84263d55307 148 case UART_1:
AnnaBridge 167:e84263d55307 149 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 150 vector = (uint32_t)&uart1_irq;
AnnaBridge 167:e84263d55307 151 break;
AnnaBridge 181:57724642e740 152 #endif
AnnaBridge 181:57724642e740 153 #if defined(USART2_BASE)
AnnaBridge 167:e84263d55307 154 case UART_2:
AnnaBridge 167:e84263d55307 155 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 156 vector = (uint32_t)&uart2_irq;
AnnaBridge 167:e84263d55307 157 break;
AnnaBridge 181:57724642e740 158 #endif
AnnaBridge 167:e84263d55307 159 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 160 case UART_3:
AnnaBridge 167:e84263d55307 161 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 162 vector = (uint32_t)&uart3_irq;
AnnaBridge 167:e84263d55307 163 break;
AnnaBridge 167:e84263d55307 164 #endif
AnnaBridge 167:e84263d55307 165 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 166 case UART_4:
AnnaBridge 167:e84263d55307 167 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 168 vector = (uint32_t)&uart4_irq;
AnnaBridge 167:e84263d55307 169 break;
AnnaBridge 167:e84263d55307 170 #endif
AnnaBridge 167:e84263d55307 171 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 172 case UART_5:
AnnaBridge 167:e84263d55307 173 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 174 vector = (uint32_t)&uart5_irq;
AnnaBridge 167:e84263d55307 175 break;
AnnaBridge 167:e84263d55307 176 #endif
AnnaBridge 181:57724642e740 177 #if defined(USART6_BASE)
AnnaBridge 167:e84263d55307 178 case UART_6:
AnnaBridge 167:e84263d55307 179 irq_n = USART6_IRQn;
AnnaBridge 167:e84263d55307 180 vector = (uint32_t)&uart6_irq;
AnnaBridge 167:e84263d55307 181 break;
AnnaBridge 181:57724642e740 182 #endif
AnnaBridge 167:e84263d55307 183 #if defined(UART7_BASE)
AnnaBridge 167:e84263d55307 184 case UART_7:
AnnaBridge 167:e84263d55307 185 irq_n = UART7_IRQn;
AnnaBridge 167:e84263d55307 186 vector = (uint32_t)&uart7_irq;
AnnaBridge 167:e84263d55307 187 break;
AnnaBridge 167:e84263d55307 188 #endif
AnnaBridge 167:e84263d55307 189 #if defined(UART8_BASE)
AnnaBridge 167:e84263d55307 190 case UART_8:
AnnaBridge 167:e84263d55307 191 irq_n = UART8_IRQn;
AnnaBridge 167:e84263d55307 192 vector = (uint32_t)&uart8_irq;
AnnaBridge 167:e84263d55307 193 break;
AnnaBridge 167:e84263d55307 194 #endif
AnnaBridge 167:e84263d55307 195 }
AnnaBridge 167:e84263d55307 196
AnnaBridge 167:e84263d55307 197 if (enable) {
AnnaBridge 167:e84263d55307 198 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 199 __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 200 } else { // TxIrq
Kojto 170:19eb464bc2be 201 __HAL_UART_ENABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 202 }
AnnaBridge 167:e84263d55307 203 NVIC_SetVector(irq_n, vector);
AnnaBridge 167:e84263d55307 204 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 205
AnnaBridge 167:e84263d55307 206 } else { // disable
AnnaBridge 167:e84263d55307 207 int all_disabled = 0;
AnnaBridge 167:e84263d55307 208 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 209 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 210 // Check if TxIrq is disabled too
AnnaBridge 167:e84263d55307 211 if ((huart->Instance->CR1 & USART_CR1_TXEIE) == 0) {
AnnaBridge 167:e84263d55307 212 all_disabled = 1;
AnnaBridge 167:e84263d55307 213 }
AnnaBridge 167:e84263d55307 214 } else { // TxIrq
Kojto 170:19eb464bc2be 215 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 216 // Check if RxIrq is disabled too
AnnaBridge 167:e84263d55307 217 if ((huart->Instance->CR1 & USART_CR1_RXNEIE) == 0) {
AnnaBridge 167:e84263d55307 218 all_disabled = 1;
AnnaBridge 167:e84263d55307 219 }
AnnaBridge 167:e84263d55307 220 }
AnnaBridge 167:e84263d55307 221
AnnaBridge 167:e84263d55307 222 if (all_disabled) {
AnnaBridge 167:e84263d55307 223 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 224 }
AnnaBridge 167:e84263d55307 225 }
AnnaBridge 167:e84263d55307 226 }
AnnaBridge 167:e84263d55307 227
AnnaBridge 167:e84263d55307 228 /******************************************************************************
AnnaBridge 167:e84263d55307 229 * READ/WRITE
AnnaBridge 167:e84263d55307 230 ******************************************************************************/
AnnaBridge 167:e84263d55307 231
AnnaBridge 167:e84263d55307 232 int serial_getc(serial_t *obj)
AnnaBridge 167:e84263d55307 233 {
AnnaBridge 167:e84263d55307 234 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 235 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 236
AnnaBridge 167:e84263d55307 237 while (!serial_readable(obj));
AnnaBridge 167:e84263d55307 238 return (int)(huart->Instance->RDR & 0x1FF);
AnnaBridge 167:e84263d55307 239 }
AnnaBridge 167:e84263d55307 240
AnnaBridge 167:e84263d55307 241 void serial_putc(serial_t *obj, int c)
AnnaBridge 167:e84263d55307 242 {
AnnaBridge 167:e84263d55307 243 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 244 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 245
AnnaBridge 167:e84263d55307 246 while (!serial_writable(obj));
AnnaBridge 167:e84263d55307 247 huart->Instance->TDR = (uint32_t)(c & 0x1FF);
AnnaBridge 167:e84263d55307 248 }
AnnaBridge 167:e84263d55307 249
AnnaBridge 167:e84263d55307 250 void serial_clear(serial_t *obj)
AnnaBridge 167:e84263d55307 251 {
AnnaBridge 167:e84263d55307 252 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 253 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 254
AnnaBridge 167:e84263d55307 255 __HAL_UART_CLEAR_IT(huart, UART_FLAG_TXE);
AnnaBridge 167:e84263d55307 256 __HAL_UART_CLEAR_IT(huart, UART_FLAG_RXNE);
AnnaBridge 167:e84263d55307 257 }
AnnaBridge 167:e84263d55307 258
AnnaBridge 167:e84263d55307 259 void serial_break_set(serial_t *obj)
AnnaBridge 167:e84263d55307 260 {
AnnaBridge 167:e84263d55307 261 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 262 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 263
AnnaBridge 167:e84263d55307 264 HAL_LIN_SendBreak(huart);
AnnaBridge 167:e84263d55307 265 }
AnnaBridge 167:e84263d55307 266
AnnaBridge 167:e84263d55307 267 #if DEVICE_SERIAL_ASYNCH
AnnaBridge 167:e84263d55307 268
AnnaBridge 167:e84263d55307 269 /******************************************************************************
AnnaBridge 167:e84263d55307 270 * LOCAL HELPER FUNCTIONS
AnnaBridge 167:e84263d55307 271 ******************************************************************************/
AnnaBridge 167:e84263d55307 272
AnnaBridge 167:e84263d55307 273 /**
AnnaBridge 167:e84263d55307 274 * Configure the TX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 275 *
AnnaBridge 167:e84263d55307 276 * @param obj The serial object.
AnnaBridge 167:e84263d55307 277 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 278 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 279 */
AnnaBridge 167:e84263d55307 280 static void serial_tx_buffer_set(serial_t *obj, void *tx, int tx_length, uint8_t width)
AnnaBridge 167:e84263d55307 281 {
AnnaBridge 167:e84263d55307 282 (void)width;
AnnaBridge 167:e84263d55307 283
AnnaBridge 167:e84263d55307 284 // Exit if a transmit is already on-going
AnnaBridge 167:e84263d55307 285 if (serial_tx_active(obj)) {
AnnaBridge 167:e84263d55307 286 return;
AnnaBridge 167:e84263d55307 287 }
AnnaBridge 167:e84263d55307 288
AnnaBridge 167:e84263d55307 289 obj->tx_buff.buffer = tx;
AnnaBridge 167:e84263d55307 290 obj->tx_buff.length = tx_length;
AnnaBridge 167:e84263d55307 291 obj->tx_buff.pos = 0;
AnnaBridge 167:e84263d55307 292 }
AnnaBridge 167:e84263d55307 293
AnnaBridge 167:e84263d55307 294 /**
AnnaBridge 167:e84263d55307 295 * Configure the RX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 296 *
AnnaBridge 167:e84263d55307 297 * @param obj The serial object.
AnnaBridge 167:e84263d55307 298 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 299 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 300 */
AnnaBridge 167:e84263d55307 301 static void serial_rx_buffer_set(serial_t *obj, void *rx, int rx_length, uint8_t width)
AnnaBridge 167:e84263d55307 302 {
AnnaBridge 167:e84263d55307 303 (void)width;
AnnaBridge 167:e84263d55307 304
AnnaBridge 167:e84263d55307 305 // Exit if a reception is already on-going
AnnaBridge 167:e84263d55307 306 if (serial_rx_active(obj)) {
AnnaBridge 167:e84263d55307 307 return;
AnnaBridge 167:e84263d55307 308 }
AnnaBridge 167:e84263d55307 309
AnnaBridge 167:e84263d55307 310 obj->rx_buff.buffer = rx;
AnnaBridge 167:e84263d55307 311 obj->rx_buff.length = rx_length;
AnnaBridge 167:e84263d55307 312 obj->rx_buff.pos = 0;
AnnaBridge 167:e84263d55307 313 }
AnnaBridge 167:e84263d55307 314
AnnaBridge 167:e84263d55307 315 /**
AnnaBridge 167:e84263d55307 316 * Configure events
AnnaBridge 167:e84263d55307 317 *
AnnaBridge 167:e84263d55307 318 * @param obj The serial object
AnnaBridge 167:e84263d55307 319 * @param event The logical OR of the events to configure
AnnaBridge 167:e84263d55307 320 * @param enable Set to non-zero to enable events, or zero to disable them
AnnaBridge 167:e84263d55307 321 */
AnnaBridge 167:e84263d55307 322 static void serial_enable_event(serial_t *obj, int event, uint8_t enable)
AnnaBridge 167:e84263d55307 323 {
AnnaBridge 167:e84263d55307 324 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 325
AnnaBridge 167:e84263d55307 326 // Shouldn't have to enable interrupt here, just need to keep track of the requested events.
AnnaBridge 167:e84263d55307 327 if (enable) {
AnnaBridge 167:e84263d55307 328 obj_s->events |= event;
AnnaBridge 167:e84263d55307 329 } else {
AnnaBridge 167:e84263d55307 330 obj_s->events &= ~event;
AnnaBridge 167:e84263d55307 331 }
AnnaBridge 167:e84263d55307 332 }
AnnaBridge 167:e84263d55307 333
AnnaBridge 167:e84263d55307 334
AnnaBridge 167:e84263d55307 335 /**
AnnaBridge 167:e84263d55307 336 * Get index of serial object TX IRQ, relating it to the physical peripheral.
AnnaBridge 167:e84263d55307 337 *
AnnaBridge 181:57724642e740 338 * @param uart_name i.e. UART_1, UART_2, ...
AnnaBridge 167:e84263d55307 339 * @return internal NVIC TX IRQ index of U(S)ART peripheral
AnnaBridge 167:e84263d55307 340 */
AnnaBridge 181:57724642e740 341 static IRQn_Type serial_get_irq_n(UARTName uart_name)
AnnaBridge 167:e84263d55307 342 {
AnnaBridge 167:e84263d55307 343 IRQn_Type irq_n;
AnnaBridge 167:e84263d55307 344
AnnaBridge 181:57724642e740 345 switch (uart_name) {
AnnaBridge 181:57724642e740 346 #if defined(USART1_BASE)
AnnaBridge 181:57724642e740 347 case UART_1:
AnnaBridge 167:e84263d55307 348 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 349 break;
AnnaBridge 181:57724642e740 350 #endif
AnnaBridge 181:57724642e740 351 #if defined(USART2_BASE)
AnnaBridge 181:57724642e740 352 case UART_2:
AnnaBridge 167:e84263d55307 353 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 354 break;
AnnaBridge 181:57724642e740 355 #endif
AnnaBridge 167:e84263d55307 356 #if defined(USART3_BASE)
AnnaBridge 181:57724642e740 357 case UART_3:
AnnaBridge 167:e84263d55307 358 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 359 break;
AnnaBridge 167:e84263d55307 360 #endif
AnnaBridge 167:e84263d55307 361 #if defined(UART4_BASE)
AnnaBridge 181:57724642e740 362 case UART_4:
AnnaBridge 167:e84263d55307 363 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 364 break;
AnnaBridge 167:e84263d55307 365 #endif
AnnaBridge 167:e84263d55307 366 #if defined(UART5_BASE)
AnnaBridge 181:57724642e740 367 case UART_5:
AnnaBridge 167:e84263d55307 368 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 369 break;
AnnaBridge 167:e84263d55307 370 #endif
AnnaBridge 181:57724642e740 371 #if defined(USART6_BASE)
AnnaBridge 181:57724642e740 372 case UART_6:
AnnaBridge 167:e84263d55307 373 irq_n = USART6_IRQn;
AnnaBridge 167:e84263d55307 374 break;
AnnaBridge 181:57724642e740 375 #endif
AnnaBridge 167:e84263d55307 376 #if defined(UART7_BASE)
AnnaBridge 181:57724642e740 377 case UART_7:
AnnaBridge 167:e84263d55307 378 irq_n = UART7_IRQn;
AnnaBridge 167:e84263d55307 379 break;
AnnaBridge 167:e84263d55307 380 #endif
AnnaBridge 167:e84263d55307 381 #if defined(UART8_BASE)
AnnaBridge 181:57724642e740 382 case UART_8:
AnnaBridge 167:e84263d55307 383 irq_n = UART8_IRQn;
AnnaBridge 167:e84263d55307 384 break;
AnnaBridge 167:e84263d55307 385 #endif
AnnaBridge 167:e84263d55307 386 default:
AnnaBridge 167:e84263d55307 387 irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 388 }
AnnaBridge 181:57724642e740 389
AnnaBridge 167:e84263d55307 390 return irq_n;
AnnaBridge 167:e84263d55307 391 }
AnnaBridge 167:e84263d55307 392
AnnaBridge 167:e84263d55307 393 /******************************************************************************
AnnaBridge 167:e84263d55307 394 * MBED API FUNCTIONS
AnnaBridge 167:e84263d55307 395 ******************************************************************************/
AnnaBridge 167:e84263d55307 396
AnnaBridge 167:e84263d55307 397 /**
AnnaBridge 167:e84263d55307 398 * Begin asynchronous TX transfer. The used buffer is specified in the serial
AnnaBridge 167:e84263d55307 399 * object, tx_buff
AnnaBridge 167:e84263d55307 400 *
AnnaBridge 167:e84263d55307 401 * @param obj The serial object
AnnaBridge 167:e84263d55307 402 * @param tx The buffer for sending
AnnaBridge 167:e84263d55307 403 * @param tx_length The number of words to transmit
AnnaBridge 167:e84263d55307 404 * @param tx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 405 * @param handler The serial handler
AnnaBridge 167:e84263d55307 406 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 407 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 408 * @return Returns number of data transfered, or 0 otherwise
AnnaBridge 167:e84263d55307 409 */
AnnaBridge 167:e84263d55307 410 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 411 {
AnnaBridge 167:e84263d55307 412 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 413 (void) hint;
AnnaBridge 167:e84263d55307 414
AnnaBridge 167:e84263d55307 415 // Check buffer is ok
AnnaBridge 167:e84263d55307 416 MBED_ASSERT(tx != (void*)0);
AnnaBridge 167:e84263d55307 417 MBED_ASSERT(tx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 418
AnnaBridge 167:e84263d55307 419 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 420 UART_HandleTypeDef * huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 421
AnnaBridge 167:e84263d55307 422 if (tx_length == 0) {
AnnaBridge 167:e84263d55307 423 return 0;
AnnaBridge 167:e84263d55307 424 }
AnnaBridge 167:e84263d55307 425
AnnaBridge 167:e84263d55307 426 // Set up buffer
AnnaBridge 167:e84263d55307 427 serial_tx_buffer_set(obj, (void *)tx, tx_length, tx_width);
AnnaBridge 167:e84263d55307 428
AnnaBridge 167:e84263d55307 429 // Set up events
AnnaBridge 167:e84263d55307 430 serial_enable_event(obj, SERIAL_EVENT_TX_ALL, 0); // Clear all events
AnnaBridge 167:e84263d55307 431 serial_enable_event(obj, event, 1); // Set only the wanted events
AnnaBridge 167:e84263d55307 432
AnnaBridge 167:e84263d55307 433 // Enable interrupt
AnnaBridge 181:57724642e740 434 IRQn_Type irq_n = serial_get_irq_n(obj_s->uart);
AnnaBridge 167:e84263d55307 435 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 436 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 437 NVIC_SetPriority(irq_n, 1);
AnnaBridge 167:e84263d55307 438 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 439 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 440
AnnaBridge 167:e84263d55307 441 // the following function will enable UART_IT_TXE and error interrupts
AnnaBridge 167:e84263d55307 442 if (HAL_UART_Transmit_IT(huart, (uint8_t*)tx, tx_length) != HAL_OK) {
AnnaBridge 167:e84263d55307 443 return 0;
AnnaBridge 167:e84263d55307 444 }
AnnaBridge 167:e84263d55307 445
AnnaBridge 167:e84263d55307 446 return tx_length;
AnnaBridge 167:e84263d55307 447 }
AnnaBridge 167:e84263d55307 448
AnnaBridge 167:e84263d55307 449 /**
AnnaBridge 167:e84263d55307 450 * Begin asynchronous RX transfer (enable interrupt for data collecting)
AnnaBridge 167:e84263d55307 451 * The used buffer is specified in the serial object, rx_buff
AnnaBridge 167:e84263d55307 452 *
AnnaBridge 167:e84263d55307 453 * @param obj The serial object
AnnaBridge 167:e84263d55307 454 * @param rx The buffer for sending
AnnaBridge 167:e84263d55307 455 * @param rx_length The number of words to transmit
AnnaBridge 167:e84263d55307 456 * @param rx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 457 * @param handler The serial handler
AnnaBridge 167:e84263d55307 458 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 459 * @param handler The serial handler
AnnaBridge 167:e84263d55307 460 * @param char_match A character in range 0-254 to be matched
AnnaBridge 167:e84263d55307 461 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 462 */
AnnaBridge 167:e84263d55307 463 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 464 {
AnnaBridge 167:e84263d55307 465 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 466 (void) hint;
AnnaBridge 167:e84263d55307 467
AnnaBridge 167:e84263d55307 468 /* Sanity check arguments */
AnnaBridge 167:e84263d55307 469 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 470 MBED_ASSERT(rx != (void*)0);
AnnaBridge 167:e84263d55307 471 MBED_ASSERT(rx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 472
AnnaBridge 167:e84263d55307 473 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 474 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 475
AnnaBridge 167:e84263d55307 476 serial_enable_event(obj, SERIAL_EVENT_RX_ALL, 0);
AnnaBridge 167:e84263d55307 477 serial_enable_event(obj, event, 1);
AnnaBridge 167:e84263d55307 478
AnnaBridge 167:e84263d55307 479 // set CharMatch
AnnaBridge 167:e84263d55307 480 obj->char_match = char_match;
AnnaBridge 167:e84263d55307 481
AnnaBridge 167:e84263d55307 482 serial_rx_buffer_set(obj, rx, rx_length, rx_width);
AnnaBridge 167:e84263d55307 483
AnnaBridge 181:57724642e740 484 IRQn_Type irq_n = serial_get_irq_n(obj_s->uart);
AnnaBridge 167:e84263d55307 485 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 486 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 487 NVIC_SetPriority(irq_n, 0);
AnnaBridge 167:e84263d55307 488 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 489 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 490
AnnaBridge 167:e84263d55307 491 // following HAL function will enable the RXNE interrupt + error interrupts
AnnaBridge 167:e84263d55307 492 HAL_UART_Receive_IT(huart, (uint8_t*)rx, rx_length);
AnnaBridge 167:e84263d55307 493 }
AnnaBridge 167:e84263d55307 494
AnnaBridge 167:e84263d55307 495 /**
AnnaBridge 167:e84263d55307 496 * Attempts to determine if the serial peripheral is already in use for TX
AnnaBridge 167:e84263d55307 497 *
AnnaBridge 167:e84263d55307 498 * @param obj The serial object
AnnaBridge 167:e84263d55307 499 * @return Non-zero if the TX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 500 */
AnnaBridge 167:e84263d55307 501 uint8_t serial_tx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 502 {
AnnaBridge 167:e84263d55307 503 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 504
AnnaBridge 167:e84263d55307 505 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 506 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 507
AnnaBridge 167:e84263d55307 508 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_TX) ? 1 : 0);
AnnaBridge 167:e84263d55307 509 }
AnnaBridge 167:e84263d55307 510
AnnaBridge 167:e84263d55307 511 /**
AnnaBridge 167:e84263d55307 512 * Attempts to determine if the serial peripheral is already in use for RX
AnnaBridge 167:e84263d55307 513 *
AnnaBridge 167:e84263d55307 514 * @param obj The serial object
AnnaBridge 167:e84263d55307 515 * @return Non-zero if the RX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 516 */
AnnaBridge 167:e84263d55307 517 uint8_t serial_rx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 518 {
AnnaBridge 167:e84263d55307 519 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 520
AnnaBridge 167:e84263d55307 521 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 522 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 523
AnnaBridge 167:e84263d55307 524 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_RX) ? 1 : 0);
AnnaBridge 167:e84263d55307 525 }
AnnaBridge 167:e84263d55307 526
AnnaBridge 167:e84263d55307 527 void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 528 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 529 __HAL_UART_CLEAR_IT(huart, UART_CLEAR_TCF);
AnnaBridge 167:e84263d55307 530 }
AnnaBridge 167:e84263d55307 531 }
AnnaBridge 167:e84263d55307 532
AnnaBridge 167:e84263d55307 533 void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 534 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 167:e84263d55307 535 __HAL_UART_CLEAR_IT(huart, UART_CLEAR_PEF);
AnnaBridge 167:e84263d55307 536 }
AnnaBridge 167:e84263d55307 537 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
AnnaBridge 167:e84263d55307 538 __HAL_UART_CLEAR_IT(huart, UART_CLEAR_FEF);
AnnaBridge 167:e84263d55307 539 }
AnnaBridge 167:e84263d55307 540 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) {
AnnaBridge 167:e84263d55307 541 __HAL_UART_CLEAR_IT(huart, UART_CLEAR_NEF);
AnnaBridge 167:e84263d55307 542 }
AnnaBridge 167:e84263d55307 543 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 167:e84263d55307 544 __HAL_UART_CLEAR_IT(huart, UART_CLEAR_OREF);
AnnaBridge 167:e84263d55307 545 }
AnnaBridge 167:e84263d55307 546 }
AnnaBridge 167:e84263d55307 547
AnnaBridge 167:e84263d55307 548 /**
AnnaBridge 167:e84263d55307 549 * The asynchronous TX and RX handler.
AnnaBridge 167:e84263d55307 550 *
AnnaBridge 167:e84263d55307 551 * @param obj The serial object
AnnaBridge 167:e84263d55307 552 * @return Returns event flags if a TX/RX transfer termination condition was met or 0 otherwise
AnnaBridge 167:e84263d55307 553 */
AnnaBridge 167:e84263d55307 554 int serial_irq_handler_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 555 {
AnnaBridge 167:e84263d55307 556 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 557 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 558
AnnaBridge 167:e84263d55307 559 volatile int return_event = 0;
AnnaBridge 167:e84263d55307 560 uint8_t *buf = (uint8_t*)(obj->rx_buff.buffer);
AnnaBridge 167:e84263d55307 561 uint8_t i = 0;
AnnaBridge 167:e84263d55307 562
AnnaBridge 167:e84263d55307 563 // TX PART:
AnnaBridge 167:e84263d55307 564 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 565 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
AnnaBridge 167:e84263d55307 566 // Return event SERIAL_EVENT_TX_COMPLETE if requested
AnnaBridge 167:e84263d55307 567 if ((obj_s->events & SERIAL_EVENT_TX_COMPLETE ) != 0) {
AnnaBridge 167:e84263d55307 568 return_event |= (SERIAL_EVENT_TX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 569 }
AnnaBridge 167:e84263d55307 570 }
AnnaBridge 167:e84263d55307 571 }
AnnaBridge 167:e84263d55307 572
AnnaBridge 167:e84263d55307 573 // Handle error events
AnnaBridge 167:e84263d55307 574 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
Kojto 169:e3b6fe271b81 575 if (__HAL_UART_GET_IT(huart, UART_IT_PE) != RESET) {
AnnaBridge 167:e84263d55307 576 return_event |= (SERIAL_EVENT_RX_PARITY_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 577 }
AnnaBridge 167:e84263d55307 578 }
AnnaBridge 167:e84263d55307 579
AnnaBridge 167:e84263d55307 580 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
Kojto 169:e3b6fe271b81 581 if (__HAL_UART_GET_IT(huart, UART_IT_FE) != RESET) {
AnnaBridge 167:e84263d55307 582 return_event |= (SERIAL_EVENT_RX_FRAMING_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 583 }
AnnaBridge 167:e84263d55307 584 }
AnnaBridge 167:e84263d55307 585
AnnaBridge 167:e84263d55307 586 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
Kojto 169:e3b6fe271b81 587 if (__HAL_UART_GET_IT(huart, UART_IT_ORE) != RESET) {
AnnaBridge 167:e84263d55307 588 return_event |= (SERIAL_EVENT_RX_OVERRUN_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 589 }
AnnaBridge 167:e84263d55307 590 }
AnnaBridge 167:e84263d55307 591
AnnaBridge 167:e84263d55307 592 HAL_UART_IRQHandler(huart);
AnnaBridge 167:e84263d55307 593
AnnaBridge 167:e84263d55307 594 // Abort if an error occurs
AnnaBridge 177:d650f5d4c87a 595 if ((return_event & SERIAL_EVENT_RX_PARITY_ERROR) ||
AnnaBridge 177:d650f5d4c87a 596 (return_event & SERIAL_EVENT_RX_FRAMING_ERROR) ||
AnnaBridge 177:d650f5d4c87a 597 (return_event & SERIAL_EVENT_RX_OVERRUN_ERROR)) {
AnnaBridge 167:e84263d55307 598 return return_event;
AnnaBridge 167:e84263d55307 599 }
AnnaBridge 167:e84263d55307 600
AnnaBridge 167:e84263d55307 601 //RX PART
AnnaBridge 167:e84263d55307 602 if (huart->RxXferSize != 0) {
AnnaBridge 167:e84263d55307 603 obj->rx_buff.pos = huart->RxXferSize - huart->RxXferCount;
AnnaBridge 167:e84263d55307 604 }
AnnaBridge 167:e84263d55307 605 if ((huart->RxXferCount == 0) && (obj->rx_buff.pos >= (obj->rx_buff.length - 1))) {
AnnaBridge 167:e84263d55307 606 return_event |= (SERIAL_EVENT_RX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 607 }
AnnaBridge 167:e84263d55307 608
AnnaBridge 167:e84263d55307 609 // Check if char_match is present
AnnaBridge 167:e84263d55307 610 if (obj_s->events & SERIAL_EVENT_RX_CHARACTER_MATCH) {
AnnaBridge 167:e84263d55307 611 if (buf != NULL) {
AnnaBridge 167:e84263d55307 612 for (i = 0; i < obj->rx_buff.pos; i++) {
AnnaBridge 167:e84263d55307 613 if (buf[i] == obj->char_match) {
AnnaBridge 167:e84263d55307 614 obj->rx_buff.pos = i;
AnnaBridge 167:e84263d55307 615 return_event |= (SERIAL_EVENT_RX_CHARACTER_MATCH & obj_s->events);
AnnaBridge 167:e84263d55307 616 serial_rx_abort_asynch(obj);
AnnaBridge 167:e84263d55307 617 break;
AnnaBridge 167:e84263d55307 618 }
AnnaBridge 167:e84263d55307 619 }
AnnaBridge 167:e84263d55307 620 }
AnnaBridge 167:e84263d55307 621 }
AnnaBridge 167:e84263d55307 622
AnnaBridge 167:e84263d55307 623 return return_event;
AnnaBridge 167:e84263d55307 624 }
AnnaBridge 167:e84263d55307 625
AnnaBridge 167:e84263d55307 626 /**
AnnaBridge 167:e84263d55307 627 * Abort the ongoing TX transaction. It disables the enabled interupt for TX and
AnnaBridge 167:e84263d55307 628 * flush TX hardware buffer if TX FIFO is used
AnnaBridge 167:e84263d55307 629 *
AnnaBridge 167:e84263d55307 630 * @param obj The serial object
AnnaBridge 167:e84263d55307 631 */
AnnaBridge 167:e84263d55307 632 void serial_tx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 633 {
AnnaBridge 167:e84263d55307 634 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 635 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 636
AnnaBridge 167:e84263d55307 637 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
AnnaBridge 167:e84263d55307 638 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 639
AnnaBridge 167:e84263d55307 640 // clear flags
AnnaBridge 167:e84263d55307 641 __HAL_UART_CLEAR_IT(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 642
AnnaBridge 167:e84263d55307 643 // reset states
AnnaBridge 167:e84263d55307 644 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 645 // update handle state
AnnaBridge 167:e84263d55307 646 if(huart->gState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 647 huart->gState = HAL_UART_STATE_BUSY_RX;
AnnaBridge 167:e84263d55307 648 } else {
AnnaBridge 167:e84263d55307 649 huart->gState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 650 }
AnnaBridge 167:e84263d55307 651 }
AnnaBridge 167:e84263d55307 652
AnnaBridge 167:e84263d55307 653 /**
AnnaBridge 167:e84263d55307 654 * Abort the ongoing RX transaction It disables the enabled interrupt for RX and
AnnaBridge 167:e84263d55307 655 * flush RX hardware buffer if RX FIFO is used
AnnaBridge 167:e84263d55307 656 *
AnnaBridge 167:e84263d55307 657 * @param obj The serial object
AnnaBridge 167:e84263d55307 658 */
AnnaBridge 167:e84263d55307 659 void serial_rx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 660 {
AnnaBridge 167:e84263d55307 661 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 662 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 663
AnnaBridge 167:e84263d55307 664 // disable interrupts
AnnaBridge 167:e84263d55307 665 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 666 __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
AnnaBridge 167:e84263d55307 667 __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
AnnaBridge 167:e84263d55307 668
AnnaBridge 167:e84263d55307 669 // clear flags
AnnaBridge 177:d650f5d4c87a 670 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->RDR; // Clear RXNE
AnnaBridge 167:e84263d55307 671 __HAL_UART_CLEAR_IT(huart, UART_CLEAR_PEF);
AnnaBridge 167:e84263d55307 672 __HAL_UART_CLEAR_IT(huart, UART_CLEAR_FEF);
AnnaBridge 167:e84263d55307 673 __HAL_UART_CLEAR_IT(huart, UART_CLEAR_NEF);
AnnaBridge 167:e84263d55307 674 __HAL_UART_CLEAR_IT(huart, UART_CLEAR_OREF);
AnnaBridge 167:e84263d55307 675
AnnaBridge 167:e84263d55307 676 // reset states
AnnaBridge 167:e84263d55307 677 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 678 // update handle state
AnnaBridge 167:e84263d55307 679 if(huart->RxState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 680 huart->RxState = HAL_UART_STATE_BUSY_TX;
AnnaBridge 167:e84263d55307 681 } else {
AnnaBridge 167:e84263d55307 682 huart->RxState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 683 }
AnnaBridge 167:e84263d55307 684 }
AnnaBridge 167:e84263d55307 685
Anna Bridge 180:96ed750bd169 686 #endif /* DEVICE_SERIAL_ASYNCH */
AnnaBridge 167:e84263d55307 687
AnnaBridge 167:e84263d55307 688 #if DEVICE_SERIAL_FC
AnnaBridge 167:e84263d55307 689
AnnaBridge 167:e84263d55307 690 /**
AnnaBridge 167:e84263d55307 691 * Set HW Control Flow
AnnaBridge 167:e84263d55307 692 * @param obj The serial object
AnnaBridge 167:e84263d55307 693 * @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS)
AnnaBridge 167:e84263d55307 694 * @param rxflow Pin for the rxflow
AnnaBridge 167:e84263d55307 695 * @param txflow Pin for the txflow
AnnaBridge 167:e84263d55307 696 */
AnnaBridge 167:e84263d55307 697 void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow)
AnnaBridge 167:e84263d55307 698 {
AnnaBridge 167:e84263d55307 699 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 700
AnnaBridge 167:e84263d55307 701 // Determine the UART to use (UART_1, UART_2, ...)
AnnaBridge 167:e84263d55307 702 UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 703 UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 704
AnnaBridge 167:e84263d55307 705 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
AnnaBridge 167:e84263d55307 706 obj_s->uart = (UARTName)pinmap_merge(uart_cts, uart_rts);
AnnaBridge 167:e84263d55307 707 MBED_ASSERT(obj_s->uart != (UARTName)NC);
AnnaBridge 167:e84263d55307 708
AnnaBridge 167:e84263d55307 709 if(type == FlowControlNone) {
AnnaBridge 167:e84263d55307 710 // Disable hardware flow control
AnnaBridge 167:e84263d55307 711 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
AnnaBridge 167:e84263d55307 712 }
AnnaBridge 167:e84263d55307 713 if (type == FlowControlRTS) {
AnnaBridge 167:e84263d55307 714 // Enable RTS
AnnaBridge 167:e84263d55307 715 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 716 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS;
AnnaBridge 167:e84263d55307 717 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 718 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 719 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 720 }
AnnaBridge 167:e84263d55307 721 if (type == FlowControlCTS) {
AnnaBridge 167:e84263d55307 722 // Enable CTS
AnnaBridge 167:e84263d55307 723 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 724 obj_s->hw_flow_ctl = UART_HWCONTROL_CTS;
AnnaBridge 167:e84263d55307 725 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 726 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 727 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 728 }
AnnaBridge 167:e84263d55307 729 if (type == FlowControlRTSCTS) {
AnnaBridge 167:e84263d55307 730 // Enable CTS & RTS
AnnaBridge 167:e84263d55307 731 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 732 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 733 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS_CTS;
AnnaBridge 167:e84263d55307 734 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 735 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 736 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 737 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 738 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 739 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 740 }
AnnaBridge 167:e84263d55307 741
AnnaBridge 167:e84263d55307 742 init_uart(obj);
AnnaBridge 167:e84263d55307 743 }
AnnaBridge 167:e84263d55307 744
Anna Bridge 180:96ed750bd169 745 #endif /* DEVICE_SERIAL_FC */
AnnaBridge 167:e84263d55307 746
Anna Bridge 180:96ed750bd169 747 #endif /* DEVICE_SERIAL */