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_STM32F2/serial_device.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
187:0387e8f68319 
mbed library release version 165

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
Anna Bridge 180:96ed750bd169 35 #define UART_NUM (6)
AnnaBridge 167:e84263d55307 36
Anna Bridge 180:96ed750bd169 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 181:57724642e740 42 // Defined in serial_api.c
Anna Bridge 186:707f6e361f3e 43 extern int8_t get_uart_index(UARTName uart_name);
AnnaBridge 181:57724642e740 44
AnnaBridge 167:e84263d55307 45 /******************************************************************************
AnnaBridge 167:e84263d55307 46 * INTERRUPTS HANDLING
AnnaBridge 167:e84263d55307 47 ******************************************************************************/
AnnaBridge 167:e84263d55307 48
AnnaBridge 181:57724642e740 49 static void uart_irq(UARTName uart_name)
AnnaBridge 167:e84263d55307 50 {
AnnaBridge 181:57724642e740 51 int8_t id = get_uart_index(uart_name);
AnnaBridge 181:57724642e740 52
AnnaBridge 181:57724642e740 53 if (id >= 0) {
AnnaBridge 187:0387e8f68319 54 UART_HandleTypeDef *huart = &uart_handlers[id];
AnnaBridge 181:57724642e740 55 if (serial_irq_ids[id] != 0) {
AnnaBridge 181:57724642e740 56 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TXE) != RESET) {
AnnaBridge 181:57724642e740 57 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TXE) != RESET) {
AnnaBridge 181:57724642e740 58 irq_handler(serial_irq_ids[id], TxIrq);
AnnaBridge 181:57724642e740 59 }
AnnaBridge 167:e84263d55307 60 }
AnnaBridge 181:57724642e740 61 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) {
AnnaBridge 181:57724642e740 62 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_RXNE) != RESET) {
AnnaBridge 181:57724642e740 63 irq_handler(serial_irq_ids[id], RxIrq);
AnnaBridge 181:57724642e740 64 /* Flag has been cleared when reading the content */
AnnaBridge 181:57724642e740 65 }
AnnaBridge 167:e84263d55307 66 }
AnnaBridge 181:57724642e740 67 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 181:57724642e740 68 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 181:57724642e740 69 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear ORE flag
AnnaBridge 181:57724642e740 70 }
AnnaBridge 167:e84263d55307 71 }
AnnaBridge 167:e84263d55307 72 }
AnnaBridge 167:e84263d55307 73 }
AnnaBridge 167:e84263d55307 74 }
AnnaBridge 167:e84263d55307 75
AnnaBridge 181:57724642e740 76 #if defined(USART1_BASE)
AnnaBridge 167:e84263d55307 77 static void uart1_irq(void)
AnnaBridge 167:e84263d55307 78 {
AnnaBridge 181:57724642e740 79 uart_irq(UART_1);
AnnaBridge 167:e84263d55307 80 }
AnnaBridge 181:57724642e740 81 #endif
AnnaBridge 167:e84263d55307 82
AnnaBridge 181:57724642e740 83 #if defined(USART2_BASE)
AnnaBridge 167:e84263d55307 84 static void uart2_irq(void)
AnnaBridge 167:e84263d55307 85 {
AnnaBridge 181:57724642e740 86 uart_irq(UART_2);
AnnaBridge 167:e84263d55307 87 }
AnnaBridge 181:57724642e740 88 #endif
AnnaBridge 167:e84263d55307 89
AnnaBridge 167:e84263d55307 90 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 91 static void uart3_irq(void)
AnnaBridge 167:e84263d55307 92 {
AnnaBridge 181:57724642e740 93 uart_irq(UART_3);
AnnaBridge 167:e84263d55307 94 }
AnnaBridge 167:e84263d55307 95 #endif
AnnaBridge 167:e84263d55307 96
AnnaBridge 167:e84263d55307 97 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 98 static void uart4_irq(void)
AnnaBridge 167:e84263d55307 99 {
AnnaBridge 181:57724642e740 100 uart_irq(UART_4);
AnnaBridge 167:e84263d55307 101 }
AnnaBridge 167:e84263d55307 102 #endif
AnnaBridge 167:e84263d55307 103
AnnaBridge 167:e84263d55307 104 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 105 static void uart5_irq(void)
AnnaBridge 167:e84263d55307 106 {
AnnaBridge 181:57724642e740 107 uart_irq(UART_5);
AnnaBridge 167:e84263d55307 108 }
AnnaBridge 167:e84263d55307 109 #endif
AnnaBridge 167:e84263d55307 110
AnnaBridge 167:e84263d55307 111 #if defined(USART6_BASE)
AnnaBridge 167:e84263d55307 112 static void uart6_irq(void)
AnnaBridge 167:e84263d55307 113 {
AnnaBridge 181:57724642e740 114 uart_irq(UART_6);
AnnaBridge 167:e84263d55307 115 }
AnnaBridge 167:e84263d55307 116 #endif
AnnaBridge 167:e84263d55307 117
AnnaBridge 167:e84263d55307 118 #if defined(UART7_BASE)
AnnaBridge 167:e84263d55307 119 static void uart7_irq(void)
AnnaBridge 167:e84263d55307 120 {
AnnaBridge 181:57724642e740 121 uart_irq(UART_7);
AnnaBridge 167:e84263d55307 122 }
AnnaBridge 167:e84263d55307 123 #endif
AnnaBridge 167:e84263d55307 124
AnnaBridge 167:e84263d55307 125 #if defined(UART8_BASE)
AnnaBridge 167:e84263d55307 126 static void uart8_irq(void)
AnnaBridge 167:e84263d55307 127 {
AnnaBridge 181:57724642e740 128 uart_irq(UART8);
AnnaBridge 167:e84263d55307 129 }
AnnaBridge 167:e84263d55307 130 #endif
AnnaBridge 167:e84263d55307 131
AnnaBridge 167:e84263d55307 132 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
AnnaBridge 167:e84263d55307 133 {
AnnaBridge 167:e84263d55307 134 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 187:0387e8f68319 135
AnnaBridge 167:e84263d55307 136 irq_handler = handler;
AnnaBridge 167:e84263d55307 137 serial_irq_ids[obj_s->index] = id;
AnnaBridge 167:e84263d55307 138 }
AnnaBridge 167:e84263d55307 139
AnnaBridge 167:e84263d55307 140 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
AnnaBridge 167:e84263d55307 141 {
AnnaBridge 167:e84263d55307 142 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 143 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 144 IRQn_Type irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 145 uint32_t vector = 0;
AnnaBridge 167:e84263d55307 146
AnnaBridge 181:57724642e740 147 switch (obj_s->uart) {
AnnaBridge 181:57724642e740 148 #if defined(USART1_BASE)
AnnaBridge 181:57724642e740 149 case UART_1:
AnnaBridge 167:e84263d55307 150 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 151 vector = (uint32_t)&uart1_irq;
AnnaBridge 167:e84263d55307 152 break;
AnnaBridge 181:57724642e740 153 #endif
AnnaBridge 181:57724642e740 154 #if defined(USART2_BASE)
AnnaBridge 181:57724642e740 155 case UART_2:
AnnaBridge 167:e84263d55307 156 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 157 vector = (uint32_t)&uart2_irq;
AnnaBridge 167:e84263d55307 158 break;
AnnaBridge 181:57724642e740 159 #endif
AnnaBridge 167:e84263d55307 160 #if defined(USART3_BASE)
AnnaBridge 181:57724642e740 161 case UART_3:
AnnaBridge 167:e84263d55307 162 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 163 vector = (uint32_t)&uart3_irq;
AnnaBridge 167:e84263d55307 164 break;
AnnaBridge 167:e84263d55307 165 #endif
AnnaBridge 167:e84263d55307 166 #if defined(UART4_BASE)
AnnaBridge 181:57724642e740 167 case UART_4:
AnnaBridge 167:e84263d55307 168 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 169 vector = (uint32_t)&uart4_irq;
AnnaBridge 167:e84263d55307 170 break;
AnnaBridge 167:e84263d55307 171 #endif
AnnaBridge 167:e84263d55307 172 #if defined(UART5_BASE)
AnnaBridge 181:57724642e740 173 case UART_5:
AnnaBridge 167:e84263d55307 174 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 175 vector = (uint32_t)&uart5_irq;
AnnaBridge 167:e84263d55307 176 break;
AnnaBridge 167:e84263d55307 177 #endif
AnnaBridge 167:e84263d55307 178 #if defined(USART6_BASE)
AnnaBridge 181:57724642e740 179 case UART_6:
AnnaBridge 167:e84263d55307 180 irq_n = USART6_IRQn;
AnnaBridge 167:e84263d55307 181 vector = (uint32_t)&uart6_irq;
AnnaBridge 167:e84263d55307 182 break;
AnnaBridge 167:e84263d55307 183 #endif
AnnaBridge 167:e84263d55307 184 #if defined(UART7_BASE)
AnnaBridge 181:57724642e740 185 case UART_7:
AnnaBridge 167:e84263d55307 186 irq_n = UART7_IRQn;
AnnaBridge 167:e84263d55307 187 vector = (uint32_t)&uart7_irq;
AnnaBridge 167:e84263d55307 188 break;
AnnaBridge 167:e84263d55307 189 #endif
AnnaBridge 167:e84263d55307 190 #if defined(UART8_BASE)
AnnaBridge 181:57724642e740 191 case UART_8:
AnnaBridge 167:e84263d55307 192 irq_n = UART8_IRQn;
AnnaBridge 167:e84263d55307 193 vector = (uint32_t)&uart8_irq;
AnnaBridge 167:e84263d55307 194 break;
AnnaBridge 167:e84263d55307 195 #endif
AnnaBridge 167:e84263d55307 196 }
AnnaBridge 167:e84263d55307 197
AnnaBridge 167:e84263d55307 198 if (enable) {
AnnaBridge 167:e84263d55307 199 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 200 __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 201 } else { // TxIrq
Kojto 170:19eb464bc2be 202 __HAL_UART_ENABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 203 }
AnnaBridge 181:57724642e740 204 NVIC_SetVector(irq_n, vector);
AnnaBridge 181:57724642e740 205 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 206
AnnaBridge 167:e84263d55307 207 } else { // disable
AnnaBridge 167:e84263d55307 208 int all_disabled = 0;
AnnaBridge 167:e84263d55307 209 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 210 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 211 // Check if TxIrq is disabled too
AnnaBridge 167:e84263d55307 212 if ((huart->Instance->CR1 & USART_CR1_TXEIE) == 0) {
AnnaBridge 167:e84263d55307 213 all_disabled = 1;
AnnaBridge 167:e84263d55307 214 }
AnnaBridge 167:e84263d55307 215 } else { // TxIrq
Kojto 170:19eb464bc2be 216 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 217 // Check if RxIrq is disabled too
AnnaBridge 167:e84263d55307 218 if ((huart->Instance->CR1 & USART_CR1_RXNEIE) == 0) {
AnnaBridge 167:e84263d55307 219 all_disabled = 1;
AnnaBridge 167:e84263d55307 220 }
AnnaBridge 167:e84263d55307 221 }
AnnaBridge 167:e84263d55307 222
AnnaBridge 167:e84263d55307 223 if (all_disabled) {
AnnaBridge 167:e84263d55307 224 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 225 }
AnnaBridge 167:e84263d55307 226 }
AnnaBridge 167:e84263d55307 227 }
AnnaBridge 167:e84263d55307 228
AnnaBridge 167:e84263d55307 229 /******************************************************************************
AnnaBridge 167:e84263d55307 230 * READ/WRITE
AnnaBridge 167:e84263d55307 231 ******************************************************************************/
AnnaBridge 167:e84263d55307 232
AnnaBridge 167:e84263d55307 233 int serial_getc(serial_t *obj)
AnnaBridge 167:e84263d55307 234 {
AnnaBridge 167:e84263d55307 235 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 236 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 237
AnnaBridge 167:e84263d55307 238 while (!serial_readable(obj));
AnnaBridge 167:e84263d55307 239 return (int)(huart->Instance->DR & (uint16_t)0x1FF);
AnnaBridge 167:e84263d55307 240 }
AnnaBridge 167:e84263d55307 241
AnnaBridge 167:e84263d55307 242 void serial_putc(serial_t *obj, int c)
AnnaBridge 167:e84263d55307 243 {
AnnaBridge 167:e84263d55307 244 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 245 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 246
AnnaBridge 167:e84263d55307 247 while (!serial_writable(obj));
AnnaBridge 167:e84263d55307 248 huart->Instance->DR = (uint32_t)(c & (uint16_t)0x1FF);
AnnaBridge 167:e84263d55307 249 }
AnnaBridge 167:e84263d55307 250
AnnaBridge 167:e84263d55307 251 void serial_clear(serial_t *obj)
AnnaBridge 167:e84263d55307 252 {
AnnaBridge 167:e84263d55307 253 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 254 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 255
AnnaBridge 167:e84263d55307 256 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 257 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 258 }
AnnaBridge 167:e84263d55307 259
AnnaBridge 167:e84263d55307 260 void serial_break_set(serial_t *obj)
AnnaBridge 167:e84263d55307 261 {
AnnaBridge 167:e84263d55307 262 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 263 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 264
AnnaBridge 167:e84263d55307 265 HAL_LIN_SendBreak(huart);
AnnaBridge 167:e84263d55307 266 }
AnnaBridge 167:e84263d55307 267
AnnaBridge 167:e84263d55307 268 #if DEVICE_SERIAL_ASYNCH
AnnaBridge 167:e84263d55307 269
AnnaBridge 167:e84263d55307 270 /******************************************************************************
AnnaBridge 167:e84263d55307 271 * LOCAL HELPER FUNCTIONS
AnnaBridge 167:e84263d55307 272 ******************************************************************************/
AnnaBridge 167:e84263d55307 273
AnnaBridge 187:0387e8f68319 274 /**
AnnaBridge 167:e84263d55307 275 * Configure the TX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 276 *
AnnaBridge 167:e84263d55307 277 * @param obj The serial object.
AnnaBridge 167:e84263d55307 278 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 279 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 280 */
AnnaBridge 167:e84263d55307 281 static void serial_tx_buffer_set(serial_t *obj, void *tx, int tx_length, uint8_t width)
AnnaBridge 167:e84263d55307 282 {
AnnaBridge 167:e84263d55307 283 (void)width;
AnnaBridge 167:e84263d55307 284
AnnaBridge 167:e84263d55307 285 // Exit if a transmit is already on-going
AnnaBridge 167:e84263d55307 286 if (serial_tx_active(obj)) {
AnnaBridge 167:e84263d55307 287 return;
AnnaBridge 167:e84263d55307 288 }
AnnaBridge 167:e84263d55307 289
AnnaBridge 167:e84263d55307 290 obj->tx_buff.buffer = tx;
AnnaBridge 167:e84263d55307 291 obj->tx_buff.length = tx_length;
AnnaBridge 167:e84263d55307 292 obj->tx_buff.pos = 0;
AnnaBridge 167:e84263d55307 293 }
AnnaBridge 187:0387e8f68319 294
AnnaBridge 167:e84263d55307 295 /**
AnnaBridge 167:e84263d55307 296 * Configure the RX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 297 *
AnnaBridge 167:e84263d55307 298 * @param obj The serial object.
AnnaBridge 167:e84263d55307 299 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 300 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 301 */
AnnaBridge 167:e84263d55307 302 static void serial_rx_buffer_set(serial_t *obj, void *rx, int rx_length, uint8_t width)
AnnaBridge 167:e84263d55307 303 {
AnnaBridge 167:e84263d55307 304 (void)width;
AnnaBridge 167:e84263d55307 305
AnnaBridge 167:e84263d55307 306 // Exit if a reception is already on-going
AnnaBridge 167:e84263d55307 307 if (serial_rx_active(obj)) {
AnnaBridge 167:e84263d55307 308 return;
AnnaBridge 167:e84263d55307 309 }
AnnaBridge 167:e84263d55307 310
AnnaBridge 167:e84263d55307 311 obj->rx_buff.buffer = rx;
AnnaBridge 167:e84263d55307 312 obj->rx_buff.length = rx_length;
AnnaBridge 167:e84263d55307 313 obj->rx_buff.pos = 0;
AnnaBridge 167:e84263d55307 314 }
AnnaBridge 167:e84263d55307 315
AnnaBridge 187:0387e8f68319 316 /**
AnnaBridge 167:e84263d55307 317 * Configure events
AnnaBridge 167:e84263d55307 318 *
AnnaBridge 167:e84263d55307 319 * @param obj The serial object
AnnaBridge 167:e84263d55307 320 * @param event The logical OR of the events to configure
AnnaBridge 167:e84263d55307 321 * @param enable Set to non-zero to enable events, or zero to disable them
AnnaBridge 167:e84263d55307 322 */
AnnaBridge 167:e84263d55307 323 static void serial_enable_event(serial_t *obj, int event, uint8_t enable)
AnnaBridge 187:0387e8f68319 324 {
AnnaBridge 167:e84263d55307 325 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 187:0387e8f68319 326
AnnaBridge 167:e84263d55307 327 // Shouldn't have to enable interrupt here, just need to keep track of the requested events.
AnnaBridge 167:e84263d55307 328 if (enable) {
AnnaBridge 167:e84263d55307 329 obj_s->events |= event;
AnnaBridge 167:e84263d55307 330 } else {
AnnaBridge 167:e84263d55307 331 obj_s->events &= ~event;
AnnaBridge 167:e84263d55307 332 }
AnnaBridge 167:e84263d55307 333 }
AnnaBridge 167:e84263d55307 334
AnnaBridge 167:e84263d55307 335
AnnaBridge 167:e84263d55307 336 /**
AnnaBridge 167:e84263d55307 337 * Get index of serial object TX IRQ, relating it to the physical peripheral.
AnnaBridge 167:e84263d55307 338 *
AnnaBridge 181:57724642e740 339 * @param uart_name i.e. UART_1, UART_2, ...
AnnaBridge 167:e84263d55307 340 * @return internal NVIC TX IRQ index of U(S)ART peripheral
AnnaBridge 167:e84263d55307 341 */
AnnaBridge 181:57724642e740 342 static IRQn_Type serial_get_irq_n(UARTName uart_name)
AnnaBridge 167:e84263d55307 343 {
AnnaBridge 167:e84263d55307 344 IRQn_Type irq_n;
AnnaBridge 167:e84263d55307 345
AnnaBridge 181:57724642e740 346 switch (uart_name) {
AnnaBridge 167:e84263d55307 347 #if defined(USART1_BASE)
AnnaBridge 181:57724642e740 348 case UART_1:
AnnaBridge 167:e84263d55307 349 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 350 break;
AnnaBridge 167:e84263d55307 351 #endif
AnnaBridge 167:e84263d55307 352 #if defined(USART2_BASE)
AnnaBridge 181:57724642e740 353 case UART_2:
AnnaBridge 167:e84263d55307 354 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 355 break;
AnnaBridge 167:e84263d55307 356 #endif
AnnaBridge 167:e84263d55307 357 #if defined(USART3_BASE)
AnnaBridge 181:57724642e740 358 case UART_3:
AnnaBridge 167:e84263d55307 359 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 360 break;
AnnaBridge 167:e84263d55307 361 #endif
AnnaBridge 167:e84263d55307 362 #if defined(UART4_BASE)
AnnaBridge 181:57724642e740 363 case UART_4:
AnnaBridge 167:e84263d55307 364 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 365 break;
AnnaBridge 167:e84263d55307 366 #endif
AnnaBridge 167:e84263d55307 367 #if defined(UART5_BASE)
AnnaBridge 181:57724642e740 368 case UART_5:
AnnaBridge 167:e84263d55307 369 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 370 break;
AnnaBridge 167:e84263d55307 371 #endif
AnnaBridge 167:e84263d55307 372 #if defined(USART6_BASE)
AnnaBridge 181:57724642e740 373 case UART_6:
AnnaBridge 167:e84263d55307 374 irq_n = USART6_IRQn;
AnnaBridge 167:e84263d55307 375 break;
AnnaBridge 167:e84263d55307 376 #endif
AnnaBridge 167:e84263d55307 377 #if defined(UART7_BASE)
AnnaBridge 181:57724642e740 378 case UART_7:
AnnaBridge 167:e84263d55307 379 irq_n = UART7_IRQn;
AnnaBridge 167:e84263d55307 380 break;
AnnaBridge 167:e84263d55307 381 #endif
AnnaBridge 167:e84263d55307 382 #if defined(UART8_BASE)
AnnaBridge 181:57724642e740 383 case UART_8:
AnnaBridge 167:e84263d55307 384 irq_n = UART8_IRQn;
AnnaBridge 167:e84263d55307 385 break;
AnnaBridge 181:57724642e740 386 #endif
AnnaBridge 167:e84263d55307 387 default:
AnnaBridge 167:e84263d55307 388 irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 389 }
AnnaBridge 167:e84263d55307 390
AnnaBridge 167:e84263d55307 391 return irq_n;
AnnaBridge 167:e84263d55307 392 }
AnnaBridge 167:e84263d55307 393
AnnaBridge 167:e84263d55307 394
AnnaBridge 167:e84263d55307 395 /******************************************************************************
AnnaBridge 167:e84263d55307 396 * MBED API FUNCTIONS
AnnaBridge 167:e84263d55307 397 ******************************************************************************/
AnnaBridge 167:e84263d55307 398
AnnaBridge 187:0387e8f68319 399 /**
AnnaBridge 167:e84263d55307 400 * Begin asynchronous TX transfer. The used buffer is specified in the serial
AnnaBridge 167:e84263d55307 401 * object, tx_buff
AnnaBridge 167:e84263d55307 402 *
AnnaBridge 167:e84263d55307 403 * @param obj The serial object
AnnaBridge 167:e84263d55307 404 * @param tx The buffer for sending
AnnaBridge 167:e84263d55307 405 * @param tx_length The number of words to transmit
AnnaBridge 167:e84263d55307 406 * @param tx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 407 * @param handler The serial handler
AnnaBridge 167:e84263d55307 408 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 409 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 410 * @return Returns number of data transfered, or 0 otherwise
AnnaBridge 167:e84263d55307 411 */
AnnaBridge 167:e84263d55307 412 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 187:0387e8f68319 413 {
AnnaBridge 167:e84263d55307 414 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 415 (void) hint;
AnnaBridge 187:0387e8f68319 416
AnnaBridge 167:e84263d55307 417 // Check buffer is ok
AnnaBridge 187:0387e8f68319 418 MBED_ASSERT(tx != (void *)0);
AnnaBridge 167:e84263d55307 419 MBED_ASSERT(tx_width == 8); // support only 8b width
AnnaBridge 187:0387e8f68319 420
AnnaBridge 167:e84263d55307 421 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 187:0387e8f68319 422 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 423
AnnaBridge 167:e84263d55307 424 if (tx_length == 0) {
AnnaBridge 167:e84263d55307 425 return 0;
AnnaBridge 167:e84263d55307 426 }
AnnaBridge 187:0387e8f68319 427
AnnaBridge 167:e84263d55307 428 // Set up buffer
AnnaBridge 167:e84263d55307 429 serial_tx_buffer_set(obj, (void *)tx, tx_length, tx_width);
AnnaBridge 187:0387e8f68319 430
AnnaBridge 167:e84263d55307 431 // Set up events
AnnaBridge 167:e84263d55307 432 serial_enable_event(obj, SERIAL_EVENT_TX_ALL, 0); // Clear all events
AnnaBridge 167:e84263d55307 433 serial_enable_event(obj, event, 1); // Set only the wanted events
AnnaBridge 187:0387e8f68319 434
AnnaBridge 167:e84263d55307 435 // Enable interrupt
AnnaBridge 181:57724642e740 436 IRQn_Type irq_n = serial_get_irq_n(obj_s->uart);
AnnaBridge 167:e84263d55307 437 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 438 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 439 NVIC_SetPriority(irq_n, 1);
AnnaBridge 167:e84263d55307 440 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 441 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 442
AnnaBridge 167:e84263d55307 443 // the following function will enable UART_IT_TXE and error interrupts
AnnaBridge 187:0387e8f68319 444 if (HAL_UART_Transmit_IT(huart, (uint8_t *)tx, tx_length) != HAL_OK) {
AnnaBridge 167:e84263d55307 445 return 0;
AnnaBridge 167:e84263d55307 446 }
AnnaBridge 187:0387e8f68319 447
AnnaBridge 167:e84263d55307 448 return tx_length;
AnnaBridge 167:e84263d55307 449 }
AnnaBridge 167:e84263d55307 450
AnnaBridge 187:0387e8f68319 451 /**
AnnaBridge 167:e84263d55307 452 * Begin asynchronous RX transfer (enable interrupt for data collecting)
AnnaBridge 167:e84263d55307 453 * The used buffer is specified in the serial object, rx_buff
AnnaBridge 167:e84263d55307 454 *
AnnaBridge 167:e84263d55307 455 * @param obj The serial object
AnnaBridge 167:e84263d55307 456 * @param rx The buffer for sending
AnnaBridge 167:e84263d55307 457 * @param rx_length The number of words to transmit
AnnaBridge 167:e84263d55307 458 * @param rx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 459 * @param handler The serial handler
AnnaBridge 167:e84263d55307 460 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 461 * @param handler The serial handler
AnnaBridge 167:e84263d55307 462 * @param char_match A character in range 0-254 to be matched
AnnaBridge 167:e84263d55307 463 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 464 */
AnnaBridge 167:e84263d55307 465 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 466 {
AnnaBridge 167:e84263d55307 467 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 468 (void) hint;
AnnaBridge 167:e84263d55307 469
AnnaBridge 167:e84263d55307 470 /* Sanity check arguments */
AnnaBridge 167:e84263d55307 471 MBED_ASSERT(obj);
AnnaBridge 187:0387e8f68319 472 MBED_ASSERT(rx != (void *)0);
AnnaBridge 167:e84263d55307 473 MBED_ASSERT(rx_width == 8); // support only 8b width
AnnaBridge 187:0387e8f68319 474
AnnaBridge 167:e84263d55307 475 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 476 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 477
AnnaBridge 167:e84263d55307 478 serial_enable_event(obj, SERIAL_EVENT_RX_ALL, 0);
AnnaBridge 167:e84263d55307 479 serial_enable_event(obj, event, 1);
AnnaBridge 187:0387e8f68319 480
AnnaBridge 167:e84263d55307 481 // set CharMatch
AnnaBridge 167:e84263d55307 482 obj->char_match = char_match;
AnnaBridge 187:0387e8f68319 483
AnnaBridge 167:e84263d55307 484 serial_rx_buffer_set(obj, rx, rx_length, rx_width);
AnnaBridge 167:e84263d55307 485
AnnaBridge 181:57724642e740 486 IRQn_Type irq_n = serial_get_irq_n(obj_s->uart);
AnnaBridge 167:e84263d55307 487 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 488 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 489 NVIC_SetPriority(irq_n, 0);
AnnaBridge 167:e84263d55307 490 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 491 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 492
AnnaBridge 187:0387e8f68319 493 // following HAL function will enable the RXNE interrupt + error interrupts
AnnaBridge 187:0387e8f68319 494 HAL_UART_Receive_IT(huart, (uint8_t *)rx, rx_length);
AnnaBridge 167:e84263d55307 495 }
AnnaBridge 167:e84263d55307 496
AnnaBridge 167:e84263d55307 497 /**
AnnaBridge 167:e84263d55307 498 * Attempts to determine if the serial peripheral is already in use for TX
AnnaBridge 167:e84263d55307 499 *
AnnaBridge 167:e84263d55307 500 * @param obj The serial object
AnnaBridge 167:e84263d55307 501 * @return Non-zero if the TX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 502 */
AnnaBridge 167:e84263d55307 503 uint8_t serial_tx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 504 {
AnnaBridge 167:e84263d55307 505 MBED_ASSERT(obj);
AnnaBridge 187:0387e8f68319 506
AnnaBridge 167:e84263d55307 507 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 508 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 187:0387e8f68319 509
AnnaBridge 187:0387e8f68319 510 return (((HAL_UART_GetState(huart) & HAL_UART_STATE_BUSY_TX) == HAL_UART_STATE_BUSY_TX) ? 1 : 0);
AnnaBridge 167:e84263d55307 511 }
AnnaBridge 167:e84263d55307 512
AnnaBridge 167:e84263d55307 513 /**
AnnaBridge 167:e84263d55307 514 * Attempts to determine if the serial peripheral is already in use for RX
AnnaBridge 167:e84263d55307 515 *
AnnaBridge 167:e84263d55307 516 * @param obj The serial object
AnnaBridge 167:e84263d55307 517 * @return Non-zero if the RX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 518 */
AnnaBridge 167:e84263d55307 519 uint8_t serial_rx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 520 {
AnnaBridge 167:e84263d55307 521 MBED_ASSERT(obj);
AnnaBridge 187:0387e8f68319 522
AnnaBridge 167:e84263d55307 523 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 524 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 187:0387e8f68319 525
AnnaBridge 187:0387e8f68319 526 return (((HAL_UART_GetState(huart) & HAL_UART_STATE_BUSY_RX) == HAL_UART_STATE_BUSY_RX) ? 1 : 0);
AnnaBridge 167:e84263d55307 527 }
AnnaBridge 167:e84263d55307 528
AnnaBridge 187:0387e8f68319 529 void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
AnnaBridge 187:0387e8f68319 530 {
AnnaBridge 167:e84263d55307 531 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 532 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 533 }
AnnaBridge 167:e84263d55307 534 }
AnnaBridge 167:e84263d55307 535
AnnaBridge 187:0387e8f68319 536 void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
AnnaBridge 187:0387e8f68319 537 {
AnnaBridge 167:e84263d55307 538 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 177:d650f5d4c87a 539 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear PE flag
AnnaBridge 167:e84263d55307 540 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
AnnaBridge 177:d650f5d4c87a 541 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear FE flag
AnnaBridge 167:e84263d55307 542 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) {
AnnaBridge 177:d650f5d4c87a 543 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear NE flag
AnnaBridge 167:e84263d55307 544 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 177:d650f5d4c87a 545 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear ORE flag
AnnaBridge 167:e84263d55307 546 }
AnnaBridge 167:e84263d55307 547 }
AnnaBridge 167:e84263d55307 548
AnnaBridge 167:e84263d55307 549 /**
AnnaBridge 167:e84263d55307 550 * The asynchronous TX and RX handler.
AnnaBridge 167:e84263d55307 551 *
AnnaBridge 167:e84263d55307 552 * @param obj The serial object
AnnaBridge 167:e84263d55307 553 * @return Returns event flags if a TX/RX transfer termination condition was met or 0 otherwise
AnnaBridge 167:e84263d55307 554 */
AnnaBridge 167:e84263d55307 555 int serial_irq_handler_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 556 {
AnnaBridge 167:e84263d55307 557 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 558 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 187:0387e8f68319 559
AnnaBridge 167:e84263d55307 560 volatile int return_event = 0;
AnnaBridge 187:0387e8f68319 561 uint8_t *buf = (uint8_t *)(obj->rx_buff.buffer);
AnnaBridge 167:e84263d55307 562 uint8_t i = 0;
AnnaBridge 187:0387e8f68319 563
AnnaBridge 167:e84263d55307 564 // TX PART:
AnnaBridge 167:e84263d55307 565 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 566 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
AnnaBridge 167:e84263d55307 567 // Return event SERIAL_EVENT_TX_COMPLETE if requested
AnnaBridge 187:0387e8f68319 568 if ((obj_s->events & SERIAL_EVENT_TX_COMPLETE) != 0) {
AnnaBridge 167:e84263d55307 569 return_event |= (SERIAL_EVENT_TX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 570 }
AnnaBridge 167:e84263d55307 571 }
AnnaBridge 167:e84263d55307 572 }
AnnaBridge 187:0387e8f68319 573
AnnaBridge 167:e84263d55307 574 // Handle error events
AnnaBridge 167:e84263d55307 575 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 167:e84263d55307 576 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 577 return_event |= (SERIAL_EVENT_RX_PARITY_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 578 }
AnnaBridge 167:e84263d55307 579 }
AnnaBridge 187:0387e8f68319 580
AnnaBridge 167:e84263d55307 581 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
AnnaBridge 167:e84263d55307 582 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 583 return_event |= (SERIAL_EVENT_RX_FRAMING_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 584 }
AnnaBridge 167:e84263d55307 585 }
AnnaBridge 187:0387e8f68319 586
AnnaBridge 167:e84263d55307 587 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 167:e84263d55307 588 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 589 return_event |= (SERIAL_EVENT_RX_OVERRUN_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 590 }
AnnaBridge 167:e84263d55307 591 }
AnnaBridge 187:0387e8f68319 592
AnnaBridge 167:e84263d55307 593 HAL_UART_IRQHandler(huart);
AnnaBridge 187:0387e8f68319 594
AnnaBridge 167:e84263d55307 595 // Abort if an error occurs
AnnaBridge 177:d650f5d4c87a 596 if ((return_event & SERIAL_EVENT_RX_PARITY_ERROR) ||
AnnaBridge 187:0387e8f68319 597 (return_event & SERIAL_EVENT_RX_FRAMING_ERROR) ||
AnnaBridge 187:0387e8f68319 598 (return_event & SERIAL_EVENT_RX_OVERRUN_ERROR)) {
AnnaBridge 167:e84263d55307 599 return return_event;
AnnaBridge 167:e84263d55307 600 }
AnnaBridge 187:0387e8f68319 601
AnnaBridge 167:e84263d55307 602 //RX PART
AnnaBridge 167:e84263d55307 603 if (huart->RxXferSize != 0) {
AnnaBridge 167:e84263d55307 604 obj->rx_buff.pos = huart->RxXferSize - huart->RxXferCount;
AnnaBridge 167:e84263d55307 605 }
AnnaBridge 167:e84263d55307 606 if ((huart->RxXferCount == 0) && (obj->rx_buff.pos >= (obj->rx_buff.length - 1))) {
AnnaBridge 167:e84263d55307 607 return_event |= (SERIAL_EVENT_RX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 608 }
AnnaBridge 187:0387e8f68319 609
AnnaBridge 167:e84263d55307 610 // Check if char_match is present
AnnaBridge 167:e84263d55307 611 if (obj_s->events & SERIAL_EVENT_RX_CHARACTER_MATCH) {
AnnaBridge 167:e84263d55307 612 if (buf != NULL) {
AnnaBridge 167:e84263d55307 613 for (i = 0; i < obj->rx_buff.pos; i++) {
AnnaBridge 167:e84263d55307 614 if (buf[i] == obj->char_match) {
AnnaBridge 167:e84263d55307 615 obj->rx_buff.pos = i;
AnnaBridge 167:e84263d55307 616 return_event |= (SERIAL_EVENT_RX_CHARACTER_MATCH & obj_s->events);
AnnaBridge 167:e84263d55307 617 serial_rx_abort_asynch(obj);
AnnaBridge 167:e84263d55307 618 break;
AnnaBridge 167:e84263d55307 619 }
AnnaBridge 167:e84263d55307 620 }
AnnaBridge 167:e84263d55307 621 }
AnnaBridge 167:e84263d55307 622 }
AnnaBridge 187:0387e8f68319 623
AnnaBridge 187:0387e8f68319 624 return return_event;
AnnaBridge 167:e84263d55307 625 }
AnnaBridge 167:e84263d55307 626
AnnaBridge 187:0387e8f68319 627 /**
AnnaBridge 167:e84263d55307 628 * Abort the ongoing TX transaction. It disables the enabled interupt for TX and
AnnaBridge 167:e84263d55307 629 * flush TX hardware buffer if TX FIFO is used
AnnaBridge 167:e84263d55307 630 *
AnnaBridge 167:e84263d55307 631 * @param obj The serial object
AnnaBridge 167:e84263d55307 632 */
AnnaBridge 167:e84263d55307 633 void serial_tx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 634 {
AnnaBridge 167:e84263d55307 635 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 636 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 187:0387e8f68319 637
AnnaBridge 167:e84263d55307 638 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
AnnaBridge 167:e84263d55307 639 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 187:0387e8f68319 640
AnnaBridge 167:e84263d55307 641 // clear flags
AnnaBridge 167:e84263d55307 642 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 181:57724642e740 643
AnnaBridge 167:e84263d55307 644 // reset states
AnnaBridge 167:e84263d55307 645 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 646 // update handle state
AnnaBridge 187:0387e8f68319 647 if (huart->gState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 648 huart->gState = HAL_UART_STATE_BUSY_RX;
AnnaBridge 167:e84263d55307 649 } else {
AnnaBridge 167:e84263d55307 650 huart->gState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 651 }
AnnaBridge 167:e84263d55307 652 }
AnnaBridge 167:e84263d55307 653
AnnaBridge 167:e84263d55307 654 /**
AnnaBridge 167:e84263d55307 655 * Abort the ongoing RX transaction It disables the enabled interrupt for RX and
AnnaBridge 167:e84263d55307 656 * flush RX hardware buffer if RX FIFO is used
AnnaBridge 167:e84263d55307 657 *
AnnaBridge 167:e84263d55307 658 * @param obj The serial object
AnnaBridge 167:e84263d55307 659 */
AnnaBridge 167:e84263d55307 660 void serial_rx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 661 {
AnnaBridge 167:e84263d55307 662 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 663 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 187:0387e8f68319 664
AnnaBridge 167:e84263d55307 665 // disable interrupts
AnnaBridge 167:e84263d55307 666 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 667 __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
AnnaBridge 167:e84263d55307 668 __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
AnnaBridge 187:0387e8f68319 669
AnnaBridge 167:e84263d55307 670 // clear flags
AnnaBridge 167:e84263d55307 671 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_RXNE);
AnnaBridge 177:d650f5d4c87a 672 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear error flags
AnnaBridge 187:0387e8f68319 673
AnnaBridge 167:e84263d55307 674 // reset states
AnnaBridge 167:e84263d55307 675 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 676 // update handle state
AnnaBridge 187:0387e8f68319 677 if (huart->RxState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 678 huart->RxState = HAL_UART_STATE_BUSY_TX;
AnnaBridge 167:e84263d55307 679 } else {
AnnaBridge 167:e84263d55307 680 huart->RxState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 681 }
AnnaBridge 167:e84263d55307 682 }
AnnaBridge 167:e84263d55307 683
Anna Bridge 180:96ed750bd169 684 #endif /* DEVICE_SERIAL_ASYNCH */
AnnaBridge 167:e84263d55307 685
AnnaBridge 167:e84263d55307 686 #if DEVICE_SERIAL_FC
AnnaBridge 167:e84263d55307 687
AnnaBridge 167:e84263d55307 688 /**
AnnaBridge 167:e84263d55307 689 * Set HW Control Flow
AnnaBridge 167:e84263d55307 690 * @param obj The serial object
AnnaBridge 167:e84263d55307 691 * @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS)
AnnaBridge 167:e84263d55307 692 * @param rxflow Pin for the rxflow
AnnaBridge 167:e84263d55307 693 * @param txflow Pin for the txflow
AnnaBridge 167:e84263d55307 694 */
AnnaBridge 167:e84263d55307 695 void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow)
AnnaBridge 167:e84263d55307 696 {
AnnaBridge 167:e84263d55307 697 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 698
AnnaBridge 189:f392fc9709a3 699 // Checked used UART name (UART_1, UART_2, ...)
AnnaBridge 167:e84263d55307 700 UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 701 UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS);
AnnaBridge 189:f392fc9709a3 702 if (((UARTName)pinmap_merge(uart_rts, obj_s->uart) == (UARTName)NC) || ((UARTName)pinmap_merge(uart_cts, obj_s->uart) == (UARTName)NC)) {
AnnaBridge 189:f392fc9709a3 703 MBED_ASSERT(0);
AnnaBridge 189:f392fc9709a3 704 return;
AnnaBridge 189:f392fc9709a3 705 }
AnnaBridge 167:e84263d55307 706
AnnaBridge 187:0387e8f68319 707 if (type == FlowControlNone) {
AnnaBridge 167:e84263d55307 708 // Disable hardware flow control
AnnaBridge 187:0387e8f68319 709 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
AnnaBridge 167:e84263d55307 710 }
AnnaBridge 167:e84263d55307 711 if (type == FlowControlRTS) {
AnnaBridge 167:e84263d55307 712 // Enable RTS
AnnaBridge 167:e84263d55307 713 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 714 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS;
AnnaBridge 167:e84263d55307 715 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 716 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 717 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 718 }
AnnaBridge 167:e84263d55307 719 if (type == FlowControlCTS) {
AnnaBridge 167:e84263d55307 720 // Enable CTS
AnnaBridge 167:e84263d55307 721 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 722 obj_s->hw_flow_ctl = UART_HWCONTROL_CTS;
AnnaBridge 167:e84263d55307 723 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 724 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 725 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 726 }
AnnaBridge 167:e84263d55307 727 if (type == FlowControlRTSCTS) {
AnnaBridge 167:e84263d55307 728 // Enable CTS & RTS
AnnaBridge 167:e84263d55307 729 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 730 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 731 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS_CTS;
AnnaBridge 167:e84263d55307 732 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 733 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 734 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 735 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 736 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 737 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 738 }
AnnaBridge 187:0387e8f68319 739
AnnaBridge 167:e84263d55307 740 init_uart(obj);
AnnaBridge 167:e84263d55307 741 }
AnnaBridge 167:e84263d55307 742
Anna Bridge 180:96ed750bd169 743 #endif /* DEVICE_SERIAL_FC */
AnnaBridge 167:e84263d55307 744
Anna Bridge 180:96ed750bd169 745 #endif /* DEVICE_SERIAL */