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_STM32F3/serial_device.c@180:96ed750bd169, 2018-01-17 (annotated)

Committer:
Anna Bridge
Date:
Wed Jan 17 15:23:54 2018 +0000
Revision:
180:96ed750bd169
Parent:
177:d650f5d4c87a
Child:
181:57724642e740
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 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 #if defined (TARGET_STM32F302x8) || defined (TARGET_STM32F303x8) || defined (TARGET_STM32F334x8)
Anna Bridge 180:96ed750bd169 36 #define UART_NUM (3)
Anna Bridge 180:96ed750bd169 37 #else
Anna Bridge 180:96ed750bd169 38 #define UART_NUM (5) // max value
AnnaBridge 167:e84263d55307 39 #endif
AnnaBridge 167:e84263d55307 40
Anna Bridge 180:96ed750bd169 41 uint32_t serial_irq_ids[UART_NUM] = {0};
Anna Bridge 180:96ed750bd169 42 UART_HandleTypeDef uart_handlers[UART_NUM];
AnnaBridge 167:e84263d55307 43
Anna Bridge 180:96ed750bd169 44 static uart_irq_handler irq_handler;
AnnaBridge 167:e84263d55307 45
AnnaBridge 167:e84263d55307 46 /******************************************************************************
AnnaBridge 167:e84263d55307 47 * INTERRUPTS HANDLING
AnnaBridge 167:e84263d55307 48 ******************************************************************************/
AnnaBridge 167:e84263d55307 49
AnnaBridge 167:e84263d55307 50 static void uart_irq(int id)
AnnaBridge 167:e84263d55307 51 {
AnnaBridge 167:e84263d55307 52 UART_HandleTypeDef * huart = &uart_handlers[id];
AnnaBridge 167:e84263d55307 53
AnnaBridge 167:e84263d55307 54 if (serial_irq_ids[id] != 0) {
Kojto 170:19eb464bc2be 55 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TXE) != RESET) {
Kojto 170:19eb464bc2be 56 if (__HAL_UART_GET_IT(huart, UART_IT_TXE) != RESET) {
AnnaBridge 167:e84263d55307 57 irq_handler(serial_irq_ids[id], TxIrq);
AnnaBridge 167:e84263d55307 58 }
AnnaBridge 167:e84263d55307 59 }
AnnaBridge 167:e84263d55307 60 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) {
Kojto 169:e3b6fe271b81 61 if (__HAL_UART_GET_IT(huart, UART_IT_RXNE) != RESET) {
Kojto 170:19eb464bc2be 62 irq_handler(serial_irq_ids[id], RxIrq);
Kojto 170:19eb464bc2be 63 /* Flag has been cleared when reading the content */
AnnaBridge 167:e84263d55307 64 }
AnnaBridge 167:e84263d55307 65 }
AnnaBridge 167:e84263d55307 66 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
Kojto 169:e3b6fe271b81 67 if (__HAL_UART_GET_IT(huart, UART_IT_ORE) != RESET) {
AnnaBridge 167:e84263d55307 68 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
AnnaBridge 167:e84263d55307 69 }
AnnaBridge 167:e84263d55307 70 }
AnnaBridge 167:e84263d55307 71 }
AnnaBridge 167:e84263d55307 72 }
AnnaBridge 167:e84263d55307 73
AnnaBridge 167:e84263d55307 74 static void uart1_irq(void)
AnnaBridge 167:e84263d55307 75 {
AnnaBridge 167:e84263d55307 76 uart_irq(0);
AnnaBridge 167:e84263d55307 77 }
AnnaBridge 167:e84263d55307 78
AnnaBridge 167:e84263d55307 79 static void uart2_irq(void)
AnnaBridge 167:e84263d55307 80 {
AnnaBridge 167:e84263d55307 81 uart_irq(1);
AnnaBridge 167:e84263d55307 82 }
AnnaBridge 167:e84263d55307 83
AnnaBridge 167:e84263d55307 84 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 85 static void uart3_irq(void)
AnnaBridge 167:e84263d55307 86 {
AnnaBridge 167:e84263d55307 87 uart_irq(2);
AnnaBridge 167:e84263d55307 88 }
AnnaBridge 167:e84263d55307 89 #endif
AnnaBridge 167:e84263d55307 90
AnnaBridge 167:e84263d55307 91 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 92 static void uart4_irq(void)
AnnaBridge 167:e84263d55307 93 {
AnnaBridge 167:e84263d55307 94 uart_irq(3);
AnnaBridge 167:e84263d55307 95 }
AnnaBridge 167:e84263d55307 96 #endif
AnnaBridge 167:e84263d55307 97
AnnaBridge 167:e84263d55307 98 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 99 static void uart5_irq(void)
AnnaBridge 167:e84263d55307 100 {
AnnaBridge 167:e84263d55307 101 uart_irq(4);
AnnaBridge 167:e84263d55307 102 }
AnnaBridge 167:e84263d55307 103 #endif
AnnaBridge 167:e84263d55307 104
AnnaBridge 167:e84263d55307 105 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
AnnaBridge 167:e84263d55307 106 {
AnnaBridge 167:e84263d55307 107 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 108
AnnaBridge 167:e84263d55307 109 irq_handler = handler;
AnnaBridge 167:e84263d55307 110 serial_irq_ids[obj_s->index] = id;
AnnaBridge 167:e84263d55307 111 }
AnnaBridge 167:e84263d55307 112
AnnaBridge 167:e84263d55307 113 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
AnnaBridge 167:e84263d55307 114 {
AnnaBridge 167:e84263d55307 115 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 116 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 117 IRQn_Type irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 118 uint32_t vector = 0;
AnnaBridge 167:e84263d55307 119
AnnaBridge 167:e84263d55307 120 if (obj_s->uart == UART_1) {
AnnaBridge 167:e84263d55307 121 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 122 vector = (uint32_t)&uart1_irq;
AnnaBridge 167:e84263d55307 123 }
AnnaBridge 167:e84263d55307 124
AnnaBridge 167:e84263d55307 125 if (obj_s->uart == UART_2) {
AnnaBridge 167:e84263d55307 126 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 127 vector = (uint32_t)&uart2_irq;
AnnaBridge 167:e84263d55307 128 }
AnnaBridge 167:e84263d55307 129
AnnaBridge 167:e84263d55307 130 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 131 if (obj_s->uart == UART_3) {
AnnaBridge 167:e84263d55307 132 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 133 vector = (uint32_t)&uart3_irq;
AnnaBridge 167:e84263d55307 134 }
AnnaBridge 167:e84263d55307 135 #endif
AnnaBridge 167:e84263d55307 136
AnnaBridge 167:e84263d55307 137 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 138 if (obj_s->uart == UART_4) {
AnnaBridge 167:e84263d55307 139 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 140 vector = (uint32_t)&uart4_irq;
AnnaBridge 167:e84263d55307 141 }
AnnaBridge 167:e84263d55307 142 #endif
AnnaBridge 167:e84263d55307 143
AnnaBridge 167:e84263d55307 144 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 145 if (obj_s->uart == UART_5) {
AnnaBridge 167:e84263d55307 146 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 147 vector = (uint32_t)&uart5_irq;
AnnaBridge 167:e84263d55307 148 }
AnnaBridge 167:e84263d55307 149 #endif
AnnaBridge 167:e84263d55307 150
AnnaBridge 167:e84263d55307 151 if (enable) {
AnnaBridge 167:e84263d55307 152 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 153 __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 154 } else { // TxIrq
Kojto 170:19eb464bc2be 155 __HAL_UART_ENABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 156 }
AnnaBridge 167:e84263d55307 157 NVIC_SetVector(irq_n, vector);
AnnaBridge 167:e84263d55307 158 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 159
AnnaBridge 167:e84263d55307 160 } else { // disable
AnnaBridge 167:e84263d55307 161 int all_disabled = 0;
AnnaBridge 167:e84263d55307 162 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 163 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 164 // Check if TxIrq is disabled too
AnnaBridge 167:e84263d55307 165 if ((huart->Instance->CR1 & USART_CR1_TXEIE) == 0) {
AnnaBridge 167:e84263d55307 166 all_disabled = 1;
AnnaBridge 167:e84263d55307 167 }
AnnaBridge 167:e84263d55307 168 } else { // TxIrq
Kojto 170:19eb464bc2be 169 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 170 // Check if RxIrq is disabled too
AnnaBridge 167:e84263d55307 171 if ((huart->Instance->CR1 & USART_CR1_RXNEIE) == 0) {
AnnaBridge 167:e84263d55307 172 all_disabled = 1;
AnnaBridge 167:e84263d55307 173 }
AnnaBridge 167:e84263d55307 174 }
AnnaBridge 167:e84263d55307 175
AnnaBridge 167:e84263d55307 176 if (all_disabled) {
AnnaBridge 167:e84263d55307 177 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 178 }
AnnaBridge 167:e84263d55307 179 }
AnnaBridge 167:e84263d55307 180 }
AnnaBridge 167:e84263d55307 181
AnnaBridge 167:e84263d55307 182 /******************************************************************************
AnnaBridge 167:e84263d55307 183 * READ/WRITE
AnnaBridge 167:e84263d55307 184 ******************************************************************************/
AnnaBridge 167:e84263d55307 185
AnnaBridge 167:e84263d55307 186 int serial_getc(serial_t *obj)
AnnaBridge 167:e84263d55307 187 {
AnnaBridge 167:e84263d55307 188 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 189 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 190
AnnaBridge 167:e84263d55307 191 while (!serial_readable(obj));
AnnaBridge 167:e84263d55307 192 if (obj_s->databits == UART_WORDLENGTH_8B) {
AnnaBridge 167:e84263d55307 193 return (int)(huart->Instance->RDR & (uint8_t)0xFF);
AnnaBridge 167:e84263d55307 194 } else {
AnnaBridge 167:e84263d55307 195 return (int)(huart->Instance->RDR & (uint16_t)0x1FF);
AnnaBridge 167:e84263d55307 196 }
AnnaBridge 167:e84263d55307 197 }
AnnaBridge 167:e84263d55307 198
AnnaBridge 167:e84263d55307 199 void serial_putc(serial_t *obj, int c)
AnnaBridge 167:e84263d55307 200 {
AnnaBridge 167:e84263d55307 201 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 202 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 203
AnnaBridge 167:e84263d55307 204 while (!serial_writable(obj));
AnnaBridge 167:e84263d55307 205 if (obj_s->databits == UART_WORDLENGTH_8B) {
AnnaBridge 167:e84263d55307 206 huart->Instance->TDR = (uint8_t)(c & (uint8_t)0xFF);
AnnaBridge 167:e84263d55307 207 } else {
AnnaBridge 167:e84263d55307 208 huart->Instance->TDR = (uint16_t)(c & (uint16_t)0x1FF);
AnnaBridge 167:e84263d55307 209 }
AnnaBridge 167:e84263d55307 210 }
AnnaBridge 167:e84263d55307 211
AnnaBridge 167:e84263d55307 212 void serial_clear(serial_t *obj)
AnnaBridge 167:e84263d55307 213 {
AnnaBridge 167:e84263d55307 214 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 215 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 216
AnnaBridge 167:e84263d55307 217 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
AnnaBridge 167:e84263d55307 218 __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
AnnaBridge 167:e84263d55307 219 }
AnnaBridge 167:e84263d55307 220
AnnaBridge 167:e84263d55307 221 void serial_break_set(serial_t *obj)
AnnaBridge 167:e84263d55307 222 {
AnnaBridge 167:e84263d55307 223 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 224 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 225
AnnaBridge 167:e84263d55307 226 HAL_LIN_SendBreak(huart);
AnnaBridge 167:e84263d55307 227 }
AnnaBridge 167:e84263d55307 228
AnnaBridge 167:e84263d55307 229 #if DEVICE_SERIAL_ASYNCH
AnnaBridge 167:e84263d55307 230
AnnaBridge 167:e84263d55307 231 /******************************************************************************
AnnaBridge 167:e84263d55307 232 * LOCAL HELPER FUNCTIONS
AnnaBridge 167:e84263d55307 233 ******************************************************************************/
AnnaBridge 167:e84263d55307 234
AnnaBridge 167:e84263d55307 235 /**
AnnaBridge 167:e84263d55307 236 * Configure the TX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 237 *
AnnaBridge 167:e84263d55307 238 * @param obj The serial object.
AnnaBridge 167:e84263d55307 239 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 240 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 241 */
AnnaBridge 167:e84263d55307 242 static void serial_tx_buffer_set(serial_t *obj, void *tx, int tx_length, uint8_t width)
AnnaBridge 167:e84263d55307 243 {
AnnaBridge 167:e84263d55307 244 (void)width;
AnnaBridge 167:e84263d55307 245
AnnaBridge 167:e84263d55307 246 // Exit if a transmit is already on-going
AnnaBridge 167:e84263d55307 247 if (serial_tx_active(obj)) {
AnnaBridge 167:e84263d55307 248 return;
AnnaBridge 167:e84263d55307 249 }
AnnaBridge 167:e84263d55307 250
AnnaBridge 167:e84263d55307 251 obj->tx_buff.buffer = tx;
AnnaBridge 167:e84263d55307 252 obj->tx_buff.length = tx_length;
AnnaBridge 167:e84263d55307 253 obj->tx_buff.pos = 0;
AnnaBridge 167:e84263d55307 254 }
AnnaBridge 167:e84263d55307 255
AnnaBridge 167:e84263d55307 256 /**
AnnaBridge 167:e84263d55307 257 * Configure the RX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 258 *
AnnaBridge 167:e84263d55307 259 * @param obj The serial object.
AnnaBridge 167:e84263d55307 260 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 261 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 262 */
AnnaBridge 167:e84263d55307 263 static void serial_rx_buffer_set(serial_t *obj, void *rx, int rx_length, uint8_t width)
AnnaBridge 167:e84263d55307 264 {
AnnaBridge 167:e84263d55307 265 (void)width;
AnnaBridge 167:e84263d55307 266
AnnaBridge 167:e84263d55307 267 // Exit if a reception is already on-going
AnnaBridge 167:e84263d55307 268 if (serial_rx_active(obj)) {
AnnaBridge 167:e84263d55307 269 return;
AnnaBridge 167:e84263d55307 270 }
AnnaBridge 167:e84263d55307 271
AnnaBridge 167:e84263d55307 272 obj->rx_buff.buffer = rx;
AnnaBridge 167:e84263d55307 273 obj->rx_buff.length = rx_length;
AnnaBridge 167:e84263d55307 274 obj->rx_buff.pos = 0;
AnnaBridge 167:e84263d55307 275 }
AnnaBridge 167:e84263d55307 276
AnnaBridge 167:e84263d55307 277 /**
AnnaBridge 167:e84263d55307 278 * Configure events
AnnaBridge 167:e84263d55307 279 *
AnnaBridge 167:e84263d55307 280 * @param obj The serial object
AnnaBridge 167:e84263d55307 281 * @param event The logical OR of the events to configure
AnnaBridge 167:e84263d55307 282 * @param enable Set to non-zero to enable events, or zero to disable them
AnnaBridge 167:e84263d55307 283 */
AnnaBridge 167:e84263d55307 284 static void serial_enable_event(serial_t *obj, int event, uint8_t enable)
AnnaBridge 167:e84263d55307 285 {
AnnaBridge 167:e84263d55307 286 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 287
AnnaBridge 167:e84263d55307 288 // Shouldn't have to enable interrupt here, just need to keep track of the requested events.
AnnaBridge 167:e84263d55307 289 if (enable) {
AnnaBridge 167:e84263d55307 290 obj_s->events |= event;
AnnaBridge 167:e84263d55307 291 } else {
AnnaBridge 167:e84263d55307 292 obj_s->events &= ~event;
AnnaBridge 167:e84263d55307 293 }
AnnaBridge 167:e84263d55307 294 }
AnnaBridge 167:e84263d55307 295
AnnaBridge 167:e84263d55307 296
AnnaBridge 167:e84263d55307 297 /**
AnnaBridge 167:e84263d55307 298 * Get index of serial object TX IRQ, relating it to the physical peripheral.
AnnaBridge 167:e84263d55307 299 *
AnnaBridge 167:e84263d55307 300 * @param obj pointer to serial object
AnnaBridge 167:e84263d55307 301 * @return internal NVIC TX IRQ index of U(S)ART peripheral
AnnaBridge 167:e84263d55307 302 */
AnnaBridge 167:e84263d55307 303 static IRQn_Type serial_get_irq_n(serial_t *obj)
AnnaBridge 167:e84263d55307 304 {
AnnaBridge 167:e84263d55307 305 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 306 IRQn_Type irq_n;
AnnaBridge 167:e84263d55307 307
AnnaBridge 167:e84263d55307 308 switch (obj_s->index) {
AnnaBridge 167:e84263d55307 309 case 0:
AnnaBridge 167:e84263d55307 310 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 311 break;
AnnaBridge 167:e84263d55307 312
AnnaBridge 167:e84263d55307 313 case 1:
AnnaBridge 167:e84263d55307 314 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 315 break;
AnnaBridge 167:e84263d55307 316
AnnaBridge 167:e84263d55307 317 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 318 case 2:
AnnaBridge 167:e84263d55307 319 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 320 break;
AnnaBridge 167:e84263d55307 321 #endif
AnnaBridge 167:e84263d55307 322 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 323 case 3:
AnnaBridge 167:e84263d55307 324 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 325 break;
AnnaBridge 167:e84263d55307 326 #endif
AnnaBridge 167:e84263d55307 327 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 328 case 4:
AnnaBridge 167:e84263d55307 329 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 330 break;
AnnaBridge 167:e84263d55307 331 #endif
AnnaBridge 167:e84263d55307 332 default:
AnnaBridge 167:e84263d55307 333 irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 334 }
AnnaBridge 167:e84263d55307 335
AnnaBridge 167:e84263d55307 336 return irq_n;
AnnaBridge 167:e84263d55307 337 }
AnnaBridge 167:e84263d55307 338
AnnaBridge 167:e84263d55307 339
AnnaBridge 167:e84263d55307 340 /******************************************************************************
AnnaBridge 167:e84263d55307 341 * MBED API FUNCTIONS
AnnaBridge 167:e84263d55307 342 ******************************************************************************/
AnnaBridge 167:e84263d55307 343
AnnaBridge 167:e84263d55307 344 /**
AnnaBridge 167:e84263d55307 345 * Begin asynchronous TX transfer. The used buffer is specified in the serial
AnnaBridge 167:e84263d55307 346 * object, tx_buff
AnnaBridge 167:e84263d55307 347 *
AnnaBridge 167:e84263d55307 348 * @param obj The serial object
AnnaBridge 167:e84263d55307 349 * @param tx The buffer for sending
AnnaBridge 167:e84263d55307 350 * @param tx_length The number of words to transmit
AnnaBridge 167:e84263d55307 351 * @param tx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 352 * @param handler The serial handler
AnnaBridge 167:e84263d55307 353 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 354 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 355 * @return Returns number of data transfered, or 0 otherwise
AnnaBridge 167:e84263d55307 356 */
AnnaBridge 167:e84263d55307 357 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 358 {
AnnaBridge 167:e84263d55307 359 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 360 (void) hint;
AnnaBridge 167:e84263d55307 361
AnnaBridge 167:e84263d55307 362 // Check buffer is ok
AnnaBridge 167:e84263d55307 363 MBED_ASSERT(tx != (void*)0);
AnnaBridge 167:e84263d55307 364 MBED_ASSERT(tx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 365
AnnaBridge 167:e84263d55307 366 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 367 UART_HandleTypeDef * huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 368
AnnaBridge 167:e84263d55307 369 if (tx_length == 0) {
AnnaBridge 167:e84263d55307 370 return 0;
AnnaBridge 167:e84263d55307 371 }
AnnaBridge 167:e84263d55307 372
AnnaBridge 167:e84263d55307 373 // Set up buffer
AnnaBridge 167:e84263d55307 374 serial_tx_buffer_set(obj, (void *)tx, tx_length, tx_width);
AnnaBridge 167:e84263d55307 375
AnnaBridge 167:e84263d55307 376 // Set up events
AnnaBridge 167:e84263d55307 377 serial_enable_event(obj, SERIAL_EVENT_TX_ALL, 0); // Clear all events
AnnaBridge 167:e84263d55307 378 serial_enable_event(obj, event, 1); // Set only the wanted events
AnnaBridge 167:e84263d55307 379
AnnaBridge 167:e84263d55307 380 // Enable interrupt
AnnaBridge 167:e84263d55307 381 IRQn_Type irq_n = serial_get_irq_n(obj);
AnnaBridge 167:e84263d55307 382 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 383 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 384 NVIC_SetPriority(irq_n, 1);
AnnaBridge 167:e84263d55307 385 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 386 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 387
AnnaBridge 167:e84263d55307 388 // the following function will enable UART_IT_TXE and error interrupts
AnnaBridge 167:e84263d55307 389 if (HAL_UART_Transmit_IT(huart, (uint8_t*)tx, tx_length) != HAL_OK) {
AnnaBridge 167:e84263d55307 390 return 0;
AnnaBridge 167:e84263d55307 391 }
AnnaBridge 167:e84263d55307 392
AnnaBridge 167:e84263d55307 393 return tx_length;
AnnaBridge 167:e84263d55307 394 }
AnnaBridge 167:e84263d55307 395
AnnaBridge 167:e84263d55307 396 /**
AnnaBridge 167:e84263d55307 397 * Begin asynchronous RX transfer (enable interrupt for data collecting)
AnnaBridge 167:e84263d55307 398 * The used buffer is specified in the serial object, rx_buff
AnnaBridge 167:e84263d55307 399 *
AnnaBridge 167:e84263d55307 400 * @param obj The serial object
AnnaBridge 167:e84263d55307 401 * @param rx The buffer for sending
AnnaBridge 167:e84263d55307 402 * @param rx_length The number of words to transmit
AnnaBridge 167:e84263d55307 403 * @param rx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 404 * @param handler The serial handler
AnnaBridge 167:e84263d55307 405 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 406 * @param handler The serial handler
AnnaBridge 167:e84263d55307 407 * @param char_match A character in range 0-254 to be matched
AnnaBridge 167:e84263d55307 408 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 409 */
AnnaBridge 167:e84263d55307 410 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 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 /* Sanity check arguments */
AnnaBridge 167:e84263d55307 416 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 417 MBED_ASSERT(rx != (void*)0);
AnnaBridge 167:e84263d55307 418 MBED_ASSERT(rx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 419
AnnaBridge 167:e84263d55307 420 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 421 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 422
AnnaBridge 167:e84263d55307 423 serial_enable_event(obj, SERIAL_EVENT_RX_ALL, 0);
AnnaBridge 167:e84263d55307 424 serial_enable_event(obj, event, 1);
AnnaBridge 167:e84263d55307 425
AnnaBridge 167:e84263d55307 426 // set CharMatch
AnnaBridge 167:e84263d55307 427 obj->char_match = char_match;
AnnaBridge 167:e84263d55307 428
AnnaBridge 167:e84263d55307 429 serial_rx_buffer_set(obj, rx, rx_length, rx_width);
AnnaBridge 167:e84263d55307 430
AnnaBridge 167:e84263d55307 431 IRQn_Type irq_n = serial_get_irq_n(obj);
AnnaBridge 167:e84263d55307 432 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 433 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 434 NVIC_SetPriority(irq_n, 0);
AnnaBridge 167:e84263d55307 435 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 436 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 437
AnnaBridge 167:e84263d55307 438 // following HAL function will enable the RXNE interrupt + error interrupts
AnnaBridge 167:e84263d55307 439 HAL_UART_Receive_IT(huart, (uint8_t*)rx, rx_length);
AnnaBridge 167:e84263d55307 440 }
AnnaBridge 167:e84263d55307 441
AnnaBridge 167:e84263d55307 442 /**
AnnaBridge 167:e84263d55307 443 * Attempts to determine if the serial peripheral is already in use for TX
AnnaBridge 167:e84263d55307 444 *
AnnaBridge 167:e84263d55307 445 * @param obj The serial object
AnnaBridge 167:e84263d55307 446 * @return Non-zero if the TX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 447 */
AnnaBridge 167:e84263d55307 448 uint8_t serial_tx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 449 {
AnnaBridge 167:e84263d55307 450 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 451
AnnaBridge 167:e84263d55307 452 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 453 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 454
AnnaBridge 167:e84263d55307 455 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_TX) ? 1 : 0);
AnnaBridge 167:e84263d55307 456 }
AnnaBridge 167:e84263d55307 457
AnnaBridge 167:e84263d55307 458 /**
AnnaBridge 167:e84263d55307 459 * Attempts to determine if the serial peripheral is already in use for RX
AnnaBridge 167:e84263d55307 460 *
AnnaBridge 167:e84263d55307 461 * @param obj The serial object
AnnaBridge 167:e84263d55307 462 * @return Non-zero if the RX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 463 */
AnnaBridge 167:e84263d55307 464 uint8_t serial_rx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 465 {
AnnaBridge 167:e84263d55307 466 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 467
AnnaBridge 167:e84263d55307 468 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 469 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 470
AnnaBridge 167:e84263d55307 471 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_RX) ? 1 : 0);
AnnaBridge 167:e84263d55307 472 }
AnnaBridge 167:e84263d55307 473
AnnaBridge 167:e84263d55307 474 void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 475 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 476 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
AnnaBridge 167:e84263d55307 477 }
AnnaBridge 167:e84263d55307 478 }
AnnaBridge 167:e84263d55307 479
AnnaBridge 167:e84263d55307 480 void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 481 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 167:e84263d55307 482 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_PEF);
AnnaBridge 167:e84263d55307 483 }
AnnaBridge 167:e84263d55307 484 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
AnnaBridge 167:e84263d55307 485 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_FEF);
AnnaBridge 167:e84263d55307 486 }
AnnaBridge 167:e84263d55307 487 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) {
AnnaBridge 167:e84263d55307 488 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_NEF);
AnnaBridge 167:e84263d55307 489 }
AnnaBridge 167:e84263d55307 490 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 167:e84263d55307 491 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
AnnaBridge 167:e84263d55307 492 }
AnnaBridge 167:e84263d55307 493 }
AnnaBridge 167:e84263d55307 494
AnnaBridge 167:e84263d55307 495 /**
AnnaBridge 167:e84263d55307 496 * The asynchronous TX and RX handler.
AnnaBridge 167:e84263d55307 497 *
AnnaBridge 167:e84263d55307 498 * @param obj The serial object
AnnaBridge 167:e84263d55307 499 * @return Returns event flags if a TX/RX transfer termination condition was met or 0 otherwise
AnnaBridge 167:e84263d55307 500 */
AnnaBridge 167:e84263d55307 501 int serial_irq_handler_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 502 {
AnnaBridge 167:e84263d55307 503 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 504 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 505
AnnaBridge 167:e84263d55307 506 volatile int return_event = 0;
AnnaBridge 167:e84263d55307 507 uint8_t *buf = (uint8_t*)(obj->rx_buff.buffer);
AnnaBridge 167:e84263d55307 508 uint8_t i = 0;
AnnaBridge 167:e84263d55307 509
AnnaBridge 167:e84263d55307 510 // TX PART:
AnnaBridge 167:e84263d55307 511 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 512 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
AnnaBridge 167:e84263d55307 513 // Return event SERIAL_EVENT_TX_COMPLETE if requested
AnnaBridge 167:e84263d55307 514 if ((obj_s->events & SERIAL_EVENT_TX_COMPLETE ) != 0) {
AnnaBridge 167:e84263d55307 515 return_event |= (SERIAL_EVENT_TX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 516 }
AnnaBridge 167:e84263d55307 517 }
AnnaBridge 167:e84263d55307 518 }
AnnaBridge 167:e84263d55307 519
AnnaBridge 167:e84263d55307 520 // Handle error events
AnnaBridge 167:e84263d55307 521 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
Kojto 169:e3b6fe271b81 522 if (__HAL_UART_GET_IT(huart, UART_IT_PE) != RESET) {
AnnaBridge 167:e84263d55307 523 return_event |= (SERIAL_EVENT_RX_PARITY_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 524 }
AnnaBridge 167:e84263d55307 525 }
AnnaBridge 167:e84263d55307 526
AnnaBridge 167:e84263d55307 527 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
Kojto 169:e3b6fe271b81 528 if (__HAL_UART_GET_IT(huart, UART_IT_FE) != RESET) {
AnnaBridge 167:e84263d55307 529 return_event |= (SERIAL_EVENT_RX_FRAMING_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 530 }
AnnaBridge 167:e84263d55307 531 }
AnnaBridge 167:e84263d55307 532
AnnaBridge 167:e84263d55307 533 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
Kojto 169:e3b6fe271b81 534 if (__HAL_UART_GET_IT(huart, UART_IT_ORE) != RESET) {
AnnaBridge 167:e84263d55307 535 return_event |= (SERIAL_EVENT_RX_OVERRUN_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 536 }
AnnaBridge 167:e84263d55307 537 }
AnnaBridge 167:e84263d55307 538
AnnaBridge 167:e84263d55307 539 HAL_UART_IRQHandler(huart);
AnnaBridge 167:e84263d55307 540
AnnaBridge 167:e84263d55307 541 // Abort if an error occurs
AnnaBridge 177:d650f5d4c87a 542 if ((return_event & SERIAL_EVENT_RX_PARITY_ERROR) ||
AnnaBridge 177:d650f5d4c87a 543 (return_event & SERIAL_EVENT_RX_FRAMING_ERROR) ||
AnnaBridge 177:d650f5d4c87a 544 (return_event & SERIAL_EVENT_RX_OVERRUN_ERROR)) {
AnnaBridge 167:e84263d55307 545 return return_event;
AnnaBridge 167:e84263d55307 546 }
AnnaBridge 167:e84263d55307 547
AnnaBridge 167:e84263d55307 548 //RX PART
AnnaBridge 167:e84263d55307 549 if (huart->RxXferSize != 0) {
AnnaBridge 167:e84263d55307 550 obj->rx_buff.pos = huart->RxXferSize - huart->RxXferCount;
AnnaBridge 167:e84263d55307 551 }
AnnaBridge 167:e84263d55307 552 if ((huart->RxXferCount == 0) && (obj->rx_buff.pos >= (obj->rx_buff.length - 1))) {
AnnaBridge 167:e84263d55307 553 return_event |= (SERIAL_EVENT_RX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 554 }
AnnaBridge 167:e84263d55307 555
AnnaBridge 167:e84263d55307 556 // Check if char_match is present
AnnaBridge 167:e84263d55307 557 if (obj_s->events & SERIAL_EVENT_RX_CHARACTER_MATCH) {
AnnaBridge 167:e84263d55307 558 if (buf != NULL) {
AnnaBridge 167:e84263d55307 559 for (i = 0; i < obj->rx_buff.pos; i++) {
AnnaBridge 167:e84263d55307 560 if (buf[i] == obj->char_match) {
AnnaBridge 167:e84263d55307 561 obj->rx_buff.pos = i;
AnnaBridge 167:e84263d55307 562 return_event |= (SERIAL_EVENT_RX_CHARACTER_MATCH & obj_s->events);
AnnaBridge 167:e84263d55307 563 serial_rx_abort_asynch(obj);
AnnaBridge 167:e84263d55307 564 break;
AnnaBridge 167:e84263d55307 565 }
AnnaBridge 167:e84263d55307 566 }
AnnaBridge 167:e84263d55307 567 }
AnnaBridge 167:e84263d55307 568 }
AnnaBridge 167:e84263d55307 569
AnnaBridge 167:e84263d55307 570 return return_event;
AnnaBridge 167:e84263d55307 571 }
AnnaBridge 167:e84263d55307 572
AnnaBridge 167:e84263d55307 573 /**
AnnaBridge 167:e84263d55307 574 * Abort the ongoing TX transaction. It disables the enabled interupt for TX and
AnnaBridge 167:e84263d55307 575 * flush TX hardware buffer if TX FIFO is used
AnnaBridge 167:e84263d55307 576 *
AnnaBridge 167:e84263d55307 577 * @param obj The serial object
AnnaBridge 167:e84263d55307 578 */
AnnaBridge 167:e84263d55307 579 void serial_tx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 580 {
AnnaBridge 167:e84263d55307 581 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 582 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 583
AnnaBridge 167:e84263d55307 584 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
AnnaBridge 167:e84263d55307 585 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 586
AnnaBridge 167:e84263d55307 587 // clear flags
AnnaBridge 167:e84263d55307 588 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
AnnaBridge 167:e84263d55307 589
AnnaBridge 167:e84263d55307 590 // reset states
AnnaBridge 167:e84263d55307 591 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 592 // update handle state
AnnaBridge 167:e84263d55307 593 if(huart->gState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 594 huart->gState = HAL_UART_STATE_BUSY_RX;
AnnaBridge 167:e84263d55307 595 } else {
AnnaBridge 167:e84263d55307 596 huart->gState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 597 }
AnnaBridge 167:e84263d55307 598 }
AnnaBridge 167:e84263d55307 599
AnnaBridge 167:e84263d55307 600 /**
AnnaBridge 167:e84263d55307 601 * Abort the ongoing RX transaction It disables the enabled interrupt for RX and
AnnaBridge 167:e84263d55307 602 * flush RX hardware buffer if RX FIFO is used
AnnaBridge 167:e84263d55307 603 *
AnnaBridge 167:e84263d55307 604 * @param obj The serial object
AnnaBridge 167:e84263d55307 605 */
AnnaBridge 167:e84263d55307 606 void serial_rx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 607 {
AnnaBridge 167:e84263d55307 608 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 609 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 610
AnnaBridge 167:e84263d55307 611 // disable interrupts
AnnaBridge 167:e84263d55307 612 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 613 __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
AnnaBridge 167:e84263d55307 614 __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
AnnaBridge 167:e84263d55307 615
AnnaBridge 167:e84263d55307 616 // clear flags
AnnaBridge 167:e84263d55307 617 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_PEF | UART_CLEAR_FEF | UART_CLEAR_OREF);
AnnaBridge 177:d650f5d4c87a 618 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->RDR; // Clear RXNE flag
AnnaBridge 167:e84263d55307 619
AnnaBridge 167:e84263d55307 620 // reset states
AnnaBridge 167:e84263d55307 621 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 622 // update handle state
AnnaBridge 167:e84263d55307 623 if(huart->RxState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 624 huart->RxState = HAL_UART_STATE_BUSY_TX;
AnnaBridge 167:e84263d55307 625 } else {
AnnaBridge 167:e84263d55307 626 huart->RxState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 627 }
AnnaBridge 167:e84263d55307 628 }
AnnaBridge 167:e84263d55307 629
Anna Bridge 180:96ed750bd169 630 #endif /* DEVICE_SERIAL_ASYNCH */
AnnaBridge 167:e84263d55307 631
AnnaBridge 167:e84263d55307 632 #if DEVICE_SERIAL_FC
AnnaBridge 167:e84263d55307 633
AnnaBridge 167:e84263d55307 634 /**
AnnaBridge 167:e84263d55307 635 * Set HW Control Flow
AnnaBridge 167:e84263d55307 636 * @param obj The serial object
AnnaBridge 167:e84263d55307 637 * @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS)
AnnaBridge 167:e84263d55307 638 * @param rxflow Pin for the rxflow
AnnaBridge 167:e84263d55307 639 * @param txflow Pin for the txflow
AnnaBridge 167:e84263d55307 640 */
AnnaBridge 167:e84263d55307 641 void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow)
AnnaBridge 167:e84263d55307 642 {
AnnaBridge 167:e84263d55307 643 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 644
AnnaBridge 167:e84263d55307 645 // Determine the UART to use (UART_1, UART_2, ...)
AnnaBridge 167:e84263d55307 646 UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 647 UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 648
AnnaBridge 167:e84263d55307 649 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
AnnaBridge 167:e84263d55307 650 obj_s->uart = (UARTName)pinmap_merge(uart_cts, uart_rts);
AnnaBridge 167:e84263d55307 651 MBED_ASSERT(obj_s->uart != (UARTName)NC);
AnnaBridge 167:e84263d55307 652
AnnaBridge 167:e84263d55307 653 if(type == FlowControlNone) {
AnnaBridge 167:e84263d55307 654 // Disable hardware flow control
AnnaBridge 167:e84263d55307 655 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
AnnaBridge 167:e84263d55307 656 }
AnnaBridge 167:e84263d55307 657 if (type == FlowControlRTS) {
AnnaBridge 167:e84263d55307 658 // Enable RTS
AnnaBridge 167:e84263d55307 659 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 660 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS;
AnnaBridge 167:e84263d55307 661 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 662 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 663 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 664 }
AnnaBridge 167:e84263d55307 665 if (type == FlowControlCTS) {
AnnaBridge 167:e84263d55307 666 // Enable CTS
AnnaBridge 167:e84263d55307 667 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 668 obj_s->hw_flow_ctl = UART_HWCONTROL_CTS;
AnnaBridge 167:e84263d55307 669 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 670 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 671 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 672 }
AnnaBridge 167:e84263d55307 673 if (type == FlowControlRTSCTS) {
AnnaBridge 167:e84263d55307 674 // Enable CTS & RTS
AnnaBridge 167:e84263d55307 675 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 676 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 677 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS_CTS;
AnnaBridge 167:e84263d55307 678 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 679 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 680 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 681 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 682 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 683 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 684 }
AnnaBridge 167:e84263d55307 685
AnnaBridge 167:e84263d55307 686 init_uart(obj);
AnnaBridge 167:e84263d55307 687 }
AnnaBridge 167:e84263d55307 688
Anna Bridge 180:96ed750bd169 689 #endif /* DEVICE_SERIAL_FC */
AnnaBridge 167:e84263d55307 690
Anna Bridge 180:96ed750bd169 691 #endif /* DEVICE_SERIAL */