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targets/TARGET_STM/TARGET_STM32L4/serial_device.c@181:96ed750bd169, 2018-01-17 (annotated)

Committer:
Anna Bridge
Date:
Wed Jan 17 15:23:54 2018 +0000
Revision:
181:96ed750bd169
Parent:
180:b0033dcd6934
Child:
182:57724642e740
mbed-dev libray. Release version 158

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 167:e84263d55307 1 /* mbed Microcontroller Library
AnnaBridge 167:e84263d55307 2 *******************************************************************************
Anna Bridge 181:96ed750bd169 3 * Copyright (c) 2017, STMicroelectronics
AnnaBridge 167:e84263d55307 4 * All rights reserved.
AnnaBridge 167:e84263d55307 5 *
AnnaBridge 167:e84263d55307 6 * Redistribution and use in source and binary forms, with or without
AnnaBridge 167:e84263d55307 7 * modification, are permitted provided that the following conditions are met:
AnnaBridge 167:e84263d55307 8 *
AnnaBridge 167:e84263d55307 9 * 1. Redistributions of source code must retain the above copyright notice,
AnnaBridge 167:e84263d55307 10 * this list of conditions and the following disclaimer.
AnnaBridge 167:e84263d55307 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
AnnaBridge 167:e84263d55307 12 * this list of conditions and the following disclaimer in the documentation
AnnaBridge 167:e84263d55307 13 * and/or other materials provided with the distribution.
AnnaBridge 167:e84263d55307 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
AnnaBridge 167:e84263d55307 15 * may be used to endorse or promote products derived from this software
AnnaBridge 167:e84263d55307 16 * without specific prior written permission.
AnnaBridge 167:e84263d55307 17 *
AnnaBridge 167:e84263d55307 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AnnaBridge 167:e84263d55307 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
AnnaBridge 167:e84263d55307 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
AnnaBridge 167:e84263d55307 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
AnnaBridge 167:e84263d55307 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
AnnaBridge 167:e84263d55307 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
AnnaBridge 167:e84263d55307 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
AnnaBridge 167:e84263d55307 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
AnnaBridge 167:e84263d55307 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
AnnaBridge 167:e84263d55307 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AnnaBridge 167:e84263d55307 28 *******************************************************************************
AnnaBridge 167:e84263d55307 29 */
AnnaBridge 167:e84263d55307 30
AnnaBridge 167:e84263d55307 31 #if DEVICE_SERIAL
AnnaBridge 167:e84263d55307 32
Anna Bridge 181:96ed750bd169 33 #include "serial_api_hal.h"
AnnaBridge 167:e84263d55307 34
Anna Bridge 181:96ed750bd169 35 #if defined (TARGET_STM32L432xC)
Anna Bridge 181:96ed750bd169 36 #define UART_NUM (3)
Anna Bridge 181:96ed750bd169 37 #else
Anna Bridge 181:96ed750bd169 38 #define UART_NUM (6) // max value
Anna Bridge 181:96ed750bd169 39 #endif
AnnaBridge 167:e84263d55307 40
Anna Bridge 181:96ed750bd169 41 uint32_t serial_irq_ids[UART_NUM] = {0};
AnnaBridge 167:e84263d55307 42 UART_HandleTypeDef uart_handlers[UART_NUM];
AnnaBridge 167:e84263d55307 43
AnnaBridge 167:e84263d55307 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 171:19eb464bc2be 55 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TXE) != RESET) {
Kojto 171:19eb464bc2be 56 if (__HAL_UART_GET_IT(huart, UART_IT_TXE) != RESET) {
Kojto 171:19eb464bc2be 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 171:19eb464bc2be 62 irq_handler(serial_irq_ids[id], RxIrq);
Kojto 171:19eb464bc2be 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 178:d650f5d4c87a 68 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->RDR; // Clear ORE flag
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 #if defined(LPUART1_BASE)
AnnaBridge 167:e84263d55307 106 static void lpuart1_irq(void)
AnnaBridge 167:e84263d55307 107 {
AnnaBridge 167:e84263d55307 108 uart_irq(5);
AnnaBridge 167:e84263d55307 109 }
AnnaBridge 167:e84263d55307 110 #endif
AnnaBridge 167:e84263d55307 111
AnnaBridge 167:e84263d55307 112 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
AnnaBridge 167:e84263d55307 113 {
AnnaBridge 167:e84263d55307 114 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 115
AnnaBridge 167:e84263d55307 116 irq_handler = handler;
AnnaBridge 167:e84263d55307 117 serial_irq_ids[obj_s->index] = id;
AnnaBridge 167:e84263d55307 118 }
AnnaBridge 167:e84263d55307 119
AnnaBridge 167:e84263d55307 120 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
AnnaBridge 167:e84263d55307 121 {
AnnaBridge 167:e84263d55307 122 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 123 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 124 IRQn_Type irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 125 uint32_t vector = 0;
AnnaBridge 167:e84263d55307 126
AnnaBridge 167:e84263d55307 127 if (obj_s->uart == UART_1) {
AnnaBridge 167:e84263d55307 128 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 129 vector = (uint32_t)&uart1_irq;
AnnaBridge 167:e84263d55307 130 }
AnnaBridge 167:e84263d55307 131
AnnaBridge 167:e84263d55307 132 if (obj_s->uart == UART_2) {
AnnaBridge 167:e84263d55307 133 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 134 vector = (uint32_t)&uart2_irq;
AnnaBridge 167:e84263d55307 135 }
AnnaBridge 167:e84263d55307 136 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 137 if (obj_s->uart == UART_3) {
AnnaBridge 167:e84263d55307 138 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 139 vector = (uint32_t)&uart3_irq;
AnnaBridge 167:e84263d55307 140 }
AnnaBridge 167:e84263d55307 141 #endif
AnnaBridge 167:e84263d55307 142 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 143 if (obj_s->uart == UART_4) {
AnnaBridge 167:e84263d55307 144 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 145 vector = (uint32_t)&uart4_irq;
AnnaBridge 167:e84263d55307 146 }
AnnaBridge 167:e84263d55307 147 #endif
AnnaBridge 167:e84263d55307 148
AnnaBridge 167:e84263d55307 149 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 150 if (obj_s->uart == UART_5) {
AnnaBridge 167:e84263d55307 151 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 152 vector = (uint32_t)&uart5_irq;
AnnaBridge 167:e84263d55307 153 }
AnnaBridge 167:e84263d55307 154 #endif
AnnaBridge 167:e84263d55307 155
AnnaBridge 167:e84263d55307 156 #if defined(LPUART1_BASE)
AnnaBridge 167:e84263d55307 157 if (obj_s->uart == LPUART_1) {
AnnaBridge 167:e84263d55307 158 irq_n = LPUART1_IRQn;
AnnaBridge 167:e84263d55307 159 vector = (uint32_t)&lpuart1_irq;
AnnaBridge 167:e84263d55307 160 }
AnnaBridge 167:e84263d55307 161 #endif
AnnaBridge 167:e84263d55307 162
AnnaBridge 167:e84263d55307 163 if (enable) {
AnnaBridge 167:e84263d55307 164 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 165 __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 166 } else { // TxIrq
Kojto 171:19eb464bc2be 167 __HAL_UART_ENABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 168 }
AnnaBridge 167:e84263d55307 169 NVIC_SetVector(irq_n, vector);
AnnaBridge 167:e84263d55307 170 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 171
AnnaBridge 167:e84263d55307 172 } else { // disable
AnnaBridge 167:e84263d55307 173 int all_disabled = 0;
AnnaBridge 167:e84263d55307 174 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 175 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 176 // Check if TxIrq is disabled too
AnnaBridge 167:e84263d55307 177 if ((huart->Instance->CR1 & USART_CR1_TXEIE) == 0) {
AnnaBridge 167:e84263d55307 178 all_disabled = 1;
AnnaBridge 167:e84263d55307 179 }
AnnaBridge 167:e84263d55307 180 } else { // TxIrq
Kojto 171:19eb464bc2be 181 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 182 // Check if RxIrq is disabled too
AnnaBridge 167:e84263d55307 183 if ((huart->Instance->CR1 & USART_CR1_RXNEIE) == 0) {
AnnaBridge 167:e84263d55307 184 all_disabled = 1;
AnnaBridge 167:e84263d55307 185 }
AnnaBridge 167:e84263d55307 186 }
AnnaBridge 167:e84263d55307 187
AnnaBridge 167:e84263d55307 188 if (all_disabled) {
AnnaBridge 167:e84263d55307 189 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 190 }
AnnaBridge 167:e84263d55307 191 }
AnnaBridge 167:e84263d55307 192 }
AnnaBridge 167:e84263d55307 193
AnnaBridge 167:e84263d55307 194 /******************************************************************************
AnnaBridge 167:e84263d55307 195 * READ/WRITE
AnnaBridge 167:e84263d55307 196 ******************************************************************************/
AnnaBridge 167:e84263d55307 197
AnnaBridge 167:e84263d55307 198 int serial_getc(serial_t *obj)
AnnaBridge 167:e84263d55307 199 {
AnnaBridge 167:e84263d55307 200 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 201 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 202
AnnaBridge 167:e84263d55307 203 while (!serial_readable(obj));
AnnaBridge 167:e84263d55307 204 if (obj_s->databits == UART_WORDLENGTH_8B) {
AnnaBridge 167:e84263d55307 205 return (int)(huart->Instance->RDR & (uint8_t)0xFF);
AnnaBridge 167:e84263d55307 206 } else {
AnnaBridge 167:e84263d55307 207 return (int)(huart->Instance->RDR & (uint16_t)0x1FF);
AnnaBridge 167:e84263d55307 208 }
AnnaBridge 167:e84263d55307 209 }
AnnaBridge 167:e84263d55307 210
AnnaBridge 167:e84263d55307 211 void serial_putc(serial_t *obj, int c)
AnnaBridge 167:e84263d55307 212 {
AnnaBridge 167:e84263d55307 213 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 214 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 215
AnnaBridge 167:e84263d55307 216 while (!serial_writable(obj));
AnnaBridge 167:e84263d55307 217 if (obj_s->databits == UART_WORDLENGTH_8B) {
AnnaBridge 167:e84263d55307 218 huart->Instance->TDR = (uint8_t)(c & (uint8_t)0xFF);
AnnaBridge 167:e84263d55307 219 } else {
AnnaBridge 167:e84263d55307 220 huart->Instance->TDR = (uint16_t)(c & (uint16_t)0x1FF);
AnnaBridge 167:e84263d55307 221 }
AnnaBridge 167:e84263d55307 222 }
AnnaBridge 167:e84263d55307 223
AnnaBridge 167:e84263d55307 224 void serial_clear(serial_t *obj)
AnnaBridge 167:e84263d55307 225 {
AnnaBridge 167:e84263d55307 226 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 227 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 228
AnnaBridge 167:e84263d55307 229 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 230 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 231 }
AnnaBridge 167:e84263d55307 232
AnnaBridge 167:e84263d55307 233 void serial_break_set(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 HAL_LIN_SendBreak(huart);
AnnaBridge 167:e84263d55307 239 }
AnnaBridge 167:e84263d55307 240
AnnaBridge 167:e84263d55307 241 #if DEVICE_SERIAL_ASYNCH
AnnaBridge 167:e84263d55307 242
AnnaBridge 167:e84263d55307 243 /******************************************************************************
AnnaBridge 167:e84263d55307 244 * LOCAL HELPER FUNCTIONS
AnnaBridge 167:e84263d55307 245 ******************************************************************************/
AnnaBridge 167:e84263d55307 246
AnnaBridge 167:e84263d55307 247 /**
AnnaBridge 167:e84263d55307 248 * Configure the TX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 249 *
AnnaBridge 167:e84263d55307 250 * @param obj The serial object.
AnnaBridge 167:e84263d55307 251 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 252 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 253 */
AnnaBridge 167:e84263d55307 254 static void serial_tx_buffer_set(serial_t *obj, void *tx, int tx_length, uint8_t width)
AnnaBridge 167:e84263d55307 255 {
AnnaBridge 167:e84263d55307 256 (void)width;
AnnaBridge 167:e84263d55307 257
AnnaBridge 167:e84263d55307 258 // Exit if a transmit is already on-going
AnnaBridge 167:e84263d55307 259 if (serial_tx_active(obj)) {
AnnaBridge 167:e84263d55307 260 return;
AnnaBridge 167:e84263d55307 261 }
AnnaBridge 167:e84263d55307 262
AnnaBridge 167:e84263d55307 263 obj->tx_buff.buffer = tx;
AnnaBridge 167:e84263d55307 264 obj->tx_buff.length = tx_length;
AnnaBridge 167:e84263d55307 265 obj->tx_buff.pos = 0;
AnnaBridge 167:e84263d55307 266 }
AnnaBridge 167:e84263d55307 267
AnnaBridge 167:e84263d55307 268 /**
AnnaBridge 167:e84263d55307 269 * Configure the RX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 270 *
AnnaBridge 167:e84263d55307 271 * @param obj The serial object.
AnnaBridge 167:e84263d55307 272 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 273 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 274 */
AnnaBridge 167:e84263d55307 275 static void serial_rx_buffer_set(serial_t *obj, void *rx, int rx_length, uint8_t width)
AnnaBridge 167:e84263d55307 276 {
AnnaBridge 167:e84263d55307 277 (void)width;
AnnaBridge 167:e84263d55307 278
AnnaBridge 167:e84263d55307 279 // Exit if a reception is already on-going
AnnaBridge 167:e84263d55307 280 if (serial_rx_active(obj)) {
AnnaBridge 167:e84263d55307 281 return;
AnnaBridge 167:e84263d55307 282 }
AnnaBridge 167:e84263d55307 283
AnnaBridge 167:e84263d55307 284 obj->rx_buff.buffer = rx;
AnnaBridge 167:e84263d55307 285 obj->rx_buff.length = rx_length;
AnnaBridge 167:e84263d55307 286 obj->rx_buff.pos = 0;
AnnaBridge 167:e84263d55307 287 }
AnnaBridge 167:e84263d55307 288
AnnaBridge 167:e84263d55307 289 /**
AnnaBridge 167:e84263d55307 290 * Configure events
AnnaBridge 167:e84263d55307 291 *
AnnaBridge 167:e84263d55307 292 * @param obj The serial object
AnnaBridge 167:e84263d55307 293 * @param event The logical OR of the events to configure
AnnaBridge 167:e84263d55307 294 * @param enable Set to non-zero to enable events, or zero to disable them
AnnaBridge 167:e84263d55307 295 */
AnnaBridge 167:e84263d55307 296 static void serial_enable_event(serial_t *obj, int event, uint8_t enable)
AnnaBridge 167:e84263d55307 297 {
AnnaBridge 167:e84263d55307 298 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 299
AnnaBridge 167:e84263d55307 300 // Shouldn't have to enable interrupt here, just need to keep track of the requested events.
AnnaBridge 167:e84263d55307 301 if (enable) {
AnnaBridge 167:e84263d55307 302 obj_s->events |= event;
AnnaBridge 167:e84263d55307 303 } else {
AnnaBridge 167:e84263d55307 304 obj_s->events &= ~event;
AnnaBridge 167:e84263d55307 305 }
AnnaBridge 167:e84263d55307 306 }
AnnaBridge 167:e84263d55307 307
AnnaBridge 167:e84263d55307 308
AnnaBridge 167:e84263d55307 309 /**
AnnaBridge 167:e84263d55307 310 * Get index of serial object TX IRQ, relating it to the physical peripheral.
AnnaBridge 167:e84263d55307 311 *
AnnaBridge 167:e84263d55307 312 * @param obj pointer to serial object
AnnaBridge 167:e84263d55307 313 * @return internal NVIC TX IRQ index of U(S)ART peripheral
AnnaBridge 167:e84263d55307 314 */
AnnaBridge 167:e84263d55307 315 static IRQn_Type serial_get_irq_n(serial_t *obj)
AnnaBridge 167:e84263d55307 316 {
AnnaBridge 167:e84263d55307 317 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 318 IRQn_Type irq_n;
AnnaBridge 167:e84263d55307 319
AnnaBridge 167:e84263d55307 320 switch (obj_s->index) {
AnnaBridge 167:e84263d55307 321 case 0:
AnnaBridge 167:e84263d55307 322 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 323 break;
AnnaBridge 167:e84263d55307 324
AnnaBridge 167:e84263d55307 325 case 1:
AnnaBridge 167:e84263d55307 326 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 327 break;
AnnaBridge 167:e84263d55307 328
Anna Bridge 181:96ed750bd169 329 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 330 case 2:
AnnaBridge 167:e84263d55307 331 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 332 break;
AnnaBridge 180:b0033dcd6934 333 #endif
AnnaBridge 167:e84263d55307 334 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 335 case 3:
AnnaBridge 167:e84263d55307 336 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 337 break;
AnnaBridge 167:e84263d55307 338 #endif
AnnaBridge 167:e84263d55307 339 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 340 case 4:
AnnaBridge 167:e84263d55307 341 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 342 break;
AnnaBridge 167:e84263d55307 343 #endif
AnnaBridge 167:e84263d55307 344 #if defined(LPUART1_BASE)
AnnaBridge 167:e84263d55307 345 case 5:
AnnaBridge 167:e84263d55307 346 irq_n = LPUART1_IRQn;
AnnaBridge 167:e84263d55307 347 break;
AnnaBridge 167:e84263d55307 348 #endif
AnnaBridge 167:e84263d55307 349
AnnaBridge 167:e84263d55307 350 default:
AnnaBridge 167:e84263d55307 351 irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 352 }
AnnaBridge 167:e84263d55307 353
AnnaBridge 167:e84263d55307 354 return irq_n;
AnnaBridge 167:e84263d55307 355 }
AnnaBridge 167:e84263d55307 356
AnnaBridge 167:e84263d55307 357 /******************************************************************************
AnnaBridge 167:e84263d55307 358 * MBED API FUNCTIONS
AnnaBridge 167:e84263d55307 359 ******************************************************************************/
AnnaBridge 167:e84263d55307 360
AnnaBridge 167:e84263d55307 361 /**
AnnaBridge 167:e84263d55307 362 * Begin asynchronous TX transfer. The used buffer is specified in the serial
AnnaBridge 167:e84263d55307 363 * object, tx_buff
AnnaBridge 167:e84263d55307 364 *
AnnaBridge 167:e84263d55307 365 * @param obj The serial object
AnnaBridge 167:e84263d55307 366 * @param tx The buffer for sending
AnnaBridge 167:e84263d55307 367 * @param tx_length The number of words to transmit
AnnaBridge 167:e84263d55307 368 * @param tx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 369 * @param handler The serial handler
AnnaBridge 167:e84263d55307 370 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 371 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 372 * @return Returns number of data transfered, or 0 otherwise
AnnaBridge 167:e84263d55307 373 */
AnnaBridge 167:e84263d55307 374 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 375 {
AnnaBridge 167:e84263d55307 376 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 377 (void) hint;
AnnaBridge 167:e84263d55307 378
AnnaBridge 167:e84263d55307 379 // Check buffer is ok
AnnaBridge 167:e84263d55307 380 MBED_ASSERT(tx != (void*)0);
AnnaBridge 167:e84263d55307 381 MBED_ASSERT(tx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 382
AnnaBridge 167:e84263d55307 383 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 384 UART_HandleTypeDef * huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 385
AnnaBridge 167:e84263d55307 386 if (tx_length == 0) {
AnnaBridge 167:e84263d55307 387 return 0;
AnnaBridge 167:e84263d55307 388 }
AnnaBridge 167:e84263d55307 389
AnnaBridge 167:e84263d55307 390 // Set up buffer
AnnaBridge 167:e84263d55307 391 serial_tx_buffer_set(obj, (void *)tx, tx_length, tx_width);
AnnaBridge 167:e84263d55307 392
AnnaBridge 167:e84263d55307 393 // Set up events
AnnaBridge 167:e84263d55307 394 serial_enable_event(obj, SERIAL_EVENT_TX_ALL, 0); // Clear all events
AnnaBridge 167:e84263d55307 395 serial_enable_event(obj, event, 1); // Set only the wanted events
AnnaBridge 167:e84263d55307 396
AnnaBridge 167:e84263d55307 397 // Enable interrupt
AnnaBridge 167:e84263d55307 398 IRQn_Type irq_n = serial_get_irq_n(obj);
AnnaBridge 167:e84263d55307 399 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 400 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 401 NVIC_SetPriority(irq_n, 1);
AnnaBridge 167:e84263d55307 402 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 403 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 404
AnnaBridge 167:e84263d55307 405 // the following function will enable UART_IT_TXE and error interrupts
AnnaBridge 167:e84263d55307 406 if (HAL_UART_Transmit_IT(huart, (uint8_t*)tx, tx_length) != HAL_OK) {
AnnaBridge 167:e84263d55307 407 return 0;
AnnaBridge 167:e84263d55307 408 }
AnnaBridge 167:e84263d55307 409
AnnaBridge 167:e84263d55307 410 return tx_length;
AnnaBridge 167:e84263d55307 411 }
AnnaBridge 167:e84263d55307 412
AnnaBridge 167:e84263d55307 413 /**
AnnaBridge 167:e84263d55307 414 * Begin asynchronous RX transfer (enable interrupt for data collecting)
AnnaBridge 167:e84263d55307 415 * The used buffer is specified in the serial object, rx_buff
AnnaBridge 167:e84263d55307 416 *
AnnaBridge 167:e84263d55307 417 * @param obj The serial object
AnnaBridge 167:e84263d55307 418 * @param rx The buffer for sending
AnnaBridge 167:e84263d55307 419 * @param rx_length The number of words to transmit
AnnaBridge 167:e84263d55307 420 * @param rx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 421 * @param handler The serial handler
AnnaBridge 167:e84263d55307 422 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 423 * @param handler The serial handler
AnnaBridge 167:e84263d55307 424 * @param char_match A character in range 0-254 to be matched
AnnaBridge 167:e84263d55307 425 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 426 */
AnnaBridge 167:e84263d55307 427 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 428 {
AnnaBridge 167:e84263d55307 429 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 430 (void) hint;
AnnaBridge 167:e84263d55307 431
AnnaBridge 167:e84263d55307 432 /* Sanity check arguments */
AnnaBridge 167:e84263d55307 433 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 434 MBED_ASSERT(rx != (void*)0);
AnnaBridge 167:e84263d55307 435 MBED_ASSERT(rx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 436
AnnaBridge 167:e84263d55307 437 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 438 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 439
AnnaBridge 167:e84263d55307 440 serial_enable_event(obj, SERIAL_EVENT_RX_ALL, 0);
AnnaBridge 167:e84263d55307 441 serial_enable_event(obj, event, 1);
AnnaBridge 167:e84263d55307 442
AnnaBridge 167:e84263d55307 443 // set CharMatch
AnnaBridge 167:e84263d55307 444 obj->char_match = char_match;
AnnaBridge 167:e84263d55307 445
AnnaBridge 167:e84263d55307 446 serial_rx_buffer_set(obj, rx, rx_length, rx_width);
AnnaBridge 167:e84263d55307 447
AnnaBridge 167:e84263d55307 448 IRQn_Type irq_n = serial_get_irq_n(obj);
AnnaBridge 167:e84263d55307 449 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 450 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 451 NVIC_SetPriority(irq_n, 0);
AnnaBridge 167:e84263d55307 452 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 453 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 454
AnnaBridge 167:e84263d55307 455 // following HAL function will enable the RXNE interrupt + error interrupts
AnnaBridge 167:e84263d55307 456 HAL_UART_Receive_IT(huart, (uint8_t*)rx, rx_length);
AnnaBridge 167:e84263d55307 457 }
AnnaBridge 167:e84263d55307 458
AnnaBridge 167:e84263d55307 459 /**
AnnaBridge 167:e84263d55307 460 * Attempts to determine if the serial peripheral is already in use for TX
AnnaBridge 167:e84263d55307 461 *
AnnaBridge 167:e84263d55307 462 * @param obj The serial object
AnnaBridge 167:e84263d55307 463 * @return Non-zero if the TX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 464 */
AnnaBridge 167:e84263d55307 465 uint8_t serial_tx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 466 {
AnnaBridge 167:e84263d55307 467 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 468
AnnaBridge 167:e84263d55307 469 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 470 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 471
AnnaBridge 167:e84263d55307 472 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_TX) ? 1 : 0);
AnnaBridge 167:e84263d55307 473 }
AnnaBridge 167:e84263d55307 474
AnnaBridge 167:e84263d55307 475 /**
AnnaBridge 167:e84263d55307 476 * Attempts to determine if the serial peripheral is already in use for RX
AnnaBridge 167:e84263d55307 477 *
AnnaBridge 167:e84263d55307 478 * @param obj The serial object
AnnaBridge 167:e84263d55307 479 * @return Non-zero if the RX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 480 */
AnnaBridge 167:e84263d55307 481 uint8_t serial_rx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 482 {
AnnaBridge 167:e84263d55307 483 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 484
AnnaBridge 167:e84263d55307 485 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 486 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 487
AnnaBridge 167:e84263d55307 488 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_RX) ? 1 : 0);
AnnaBridge 167:e84263d55307 489 }
AnnaBridge 167:e84263d55307 490
AnnaBridge 167:e84263d55307 491 void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 492 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 493 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 494 }
AnnaBridge 167:e84263d55307 495 }
AnnaBridge 167:e84263d55307 496
AnnaBridge 167:e84263d55307 497 void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 498 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 178:d650f5d4c87a 499 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->RDR; // Clear PE flag
AnnaBridge 167:e84263d55307 500 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
AnnaBridge 178:d650f5d4c87a 501 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->RDR; // Clear FE flag
AnnaBridge 167:e84263d55307 502 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) {
AnnaBridge 178:d650f5d4c87a 503 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->RDR; // Clear NE flag
AnnaBridge 167:e84263d55307 504 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 178:d650f5d4c87a 505 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->RDR; // Clear ORE flag
AnnaBridge 167:e84263d55307 506 }
AnnaBridge 167:e84263d55307 507 }
AnnaBridge 167:e84263d55307 508
AnnaBridge 167:e84263d55307 509 /**
AnnaBridge 167:e84263d55307 510 * The asynchronous TX and RX handler.
AnnaBridge 167:e84263d55307 511 *
AnnaBridge 167:e84263d55307 512 * @param obj The serial object
AnnaBridge 167:e84263d55307 513 * @return Returns event flags if a TX/RX transfer termination condition was met or 0 otherwise
AnnaBridge 167:e84263d55307 514 */
AnnaBridge 167:e84263d55307 515 int serial_irq_handler_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 516 {
AnnaBridge 167:e84263d55307 517 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 518 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 519
AnnaBridge 167:e84263d55307 520 volatile int return_event = 0;
AnnaBridge 167:e84263d55307 521 uint8_t *buf = (uint8_t*)(obj->rx_buff.buffer);
AnnaBridge 167:e84263d55307 522 uint8_t i = 0;
AnnaBridge 167:e84263d55307 523
AnnaBridge 167:e84263d55307 524 // TX PART:
AnnaBridge 167:e84263d55307 525 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 526 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
AnnaBridge 167:e84263d55307 527 // Return event SERIAL_EVENT_TX_COMPLETE if requested
AnnaBridge 167:e84263d55307 528 if ((obj_s->events & SERIAL_EVENT_TX_COMPLETE ) != 0) {
AnnaBridge 167:e84263d55307 529 return_event |= (SERIAL_EVENT_TX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 530 }
AnnaBridge 167:e84263d55307 531 }
AnnaBridge 167:e84263d55307 532 }
AnnaBridge 167:e84263d55307 533
AnnaBridge 167:e84263d55307 534 // Handle error events
AnnaBridge 167:e84263d55307 535 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
Kojto 169:e3b6fe271b81 536 if (__HAL_UART_GET_IT(huart, UART_IT_PE) != RESET) {
AnnaBridge 167:e84263d55307 537 return_event |= (SERIAL_EVENT_RX_PARITY_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 538 }
AnnaBridge 167:e84263d55307 539 }
AnnaBridge 167:e84263d55307 540
AnnaBridge 167:e84263d55307 541 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
Kojto 169:e3b6fe271b81 542 if (__HAL_UART_GET_IT(huart, UART_IT_FE) != RESET) {
AnnaBridge 167:e84263d55307 543 return_event |= (SERIAL_EVENT_RX_FRAMING_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 544 }
AnnaBridge 167:e84263d55307 545 }
AnnaBridge 167:e84263d55307 546
AnnaBridge 167:e84263d55307 547 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
Kojto 169:e3b6fe271b81 548 if (__HAL_UART_GET_IT(huart, UART_IT_ORE) != RESET) {
AnnaBridge 167:e84263d55307 549 return_event |= (SERIAL_EVENT_RX_OVERRUN_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 550 }
AnnaBridge 167:e84263d55307 551 }
AnnaBridge 167:e84263d55307 552
AnnaBridge 167:e84263d55307 553 HAL_UART_IRQHandler(huart);
AnnaBridge 167:e84263d55307 554
AnnaBridge 167:e84263d55307 555 // Abort if an error occurs
AnnaBridge 178:d650f5d4c87a 556 if ((return_event & SERIAL_EVENT_RX_PARITY_ERROR) ||
AnnaBridge 178:d650f5d4c87a 557 (return_event & SERIAL_EVENT_RX_FRAMING_ERROR) ||
AnnaBridge 178:d650f5d4c87a 558 (return_event & SERIAL_EVENT_RX_OVERRUN_ERROR)) {
AnnaBridge 167:e84263d55307 559 return return_event;
AnnaBridge 167:e84263d55307 560 }
AnnaBridge 167:e84263d55307 561
AnnaBridge 167:e84263d55307 562 //RX PART
AnnaBridge 167:e84263d55307 563 if (huart->RxXferSize != 0) {
AnnaBridge 167:e84263d55307 564 obj->rx_buff.pos = huart->RxXferSize - huart->RxXferCount;
AnnaBridge 167:e84263d55307 565 }
AnnaBridge 167:e84263d55307 566 if ((huart->RxXferCount == 0) && (obj->rx_buff.pos >= (obj->rx_buff.length - 1))) {
AnnaBridge 167:e84263d55307 567 return_event |= (SERIAL_EVENT_RX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 568 }
AnnaBridge 167:e84263d55307 569
AnnaBridge 167:e84263d55307 570 // Check if char_match is present
AnnaBridge 167:e84263d55307 571 if (obj_s->events & SERIAL_EVENT_RX_CHARACTER_MATCH) {
AnnaBridge 167:e84263d55307 572 if (buf != NULL) {
AnnaBridge 167:e84263d55307 573 for (i = 0; i < obj->rx_buff.pos; i++) {
AnnaBridge 167:e84263d55307 574 if (buf[i] == obj->char_match) {
AnnaBridge 167:e84263d55307 575 obj->rx_buff.pos = i;
AnnaBridge 167:e84263d55307 576 return_event |= (SERIAL_EVENT_RX_CHARACTER_MATCH & obj_s->events);
AnnaBridge 167:e84263d55307 577 serial_rx_abort_asynch(obj);
AnnaBridge 167:e84263d55307 578 break;
AnnaBridge 167:e84263d55307 579 }
AnnaBridge 167:e84263d55307 580 }
AnnaBridge 167:e84263d55307 581 }
AnnaBridge 167:e84263d55307 582 }
AnnaBridge 167:e84263d55307 583
AnnaBridge 167:e84263d55307 584 return return_event;
AnnaBridge 167:e84263d55307 585 }
AnnaBridge 167:e84263d55307 586
AnnaBridge 167:e84263d55307 587 /**
AnnaBridge 167:e84263d55307 588 * Abort the ongoing TX transaction. It disables the enabled interupt for TX and
AnnaBridge 167:e84263d55307 589 * flush TX hardware buffer if TX FIFO is used
AnnaBridge 167:e84263d55307 590 *
AnnaBridge 167:e84263d55307 591 * @param obj The serial object
AnnaBridge 167:e84263d55307 592 */
AnnaBridge 167:e84263d55307 593 void serial_tx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 594 {
AnnaBridge 167:e84263d55307 595 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 596 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 597
AnnaBridge 167:e84263d55307 598 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
AnnaBridge 167:e84263d55307 599 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 600
AnnaBridge 167:e84263d55307 601 // clear flags
AnnaBridge 167:e84263d55307 602 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 603
AnnaBridge 167:e84263d55307 604 // reset states
AnnaBridge 167:e84263d55307 605 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 606 // update handle state
AnnaBridge 167:e84263d55307 607 if(huart->gState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 608 huart->gState = HAL_UART_STATE_BUSY_RX;
AnnaBridge 167:e84263d55307 609 } else {
AnnaBridge 167:e84263d55307 610 huart->gState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 611 }
AnnaBridge 167:e84263d55307 612 }
AnnaBridge 167:e84263d55307 613
AnnaBridge 167:e84263d55307 614 /**
AnnaBridge 167:e84263d55307 615 * Abort the ongoing RX transaction It disables the enabled interrupt for RX and
AnnaBridge 167:e84263d55307 616 * flush RX hardware buffer if RX FIFO is used
AnnaBridge 167:e84263d55307 617 *
AnnaBridge 167:e84263d55307 618 * @param obj The serial object
AnnaBridge 167:e84263d55307 619 */
AnnaBridge 167:e84263d55307 620 void serial_rx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 621 {
AnnaBridge 167:e84263d55307 622 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 623 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 624
AnnaBridge 167:e84263d55307 625 // disable interrupts
AnnaBridge 167:e84263d55307 626 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 627 __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
AnnaBridge 167:e84263d55307 628 __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
AnnaBridge 167:e84263d55307 629
AnnaBridge 167:e84263d55307 630 // clear flags
AnnaBridge 167:e84263d55307 631 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_RXNE);
AnnaBridge 178:d650f5d4c87a 632 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->RDR; // Clear errors flag
AnnaBridge 167:e84263d55307 633
AnnaBridge 167:e84263d55307 634 // reset states
AnnaBridge 167:e84263d55307 635 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 636 // update handle state
AnnaBridge 167:e84263d55307 637 if(huart->RxState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 638 huart->RxState = HAL_UART_STATE_BUSY_TX;
AnnaBridge 167:e84263d55307 639 } else {
AnnaBridge 167:e84263d55307 640 huart->RxState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 641 }
AnnaBridge 167:e84263d55307 642 }
AnnaBridge 167:e84263d55307 643
Anna Bridge 181:96ed750bd169 644 #endif /* DEVICE_SERIAL_ASYNCH */
AnnaBridge 167:e84263d55307 645
AnnaBridge 167:e84263d55307 646 #if DEVICE_SERIAL_FC
AnnaBridge 167:e84263d55307 647
AnnaBridge 167:e84263d55307 648 /**
AnnaBridge 167:e84263d55307 649 * Set HW Control Flow
AnnaBridge 167:e84263d55307 650 * @param obj The serial object
AnnaBridge 167:e84263d55307 651 * @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS)
AnnaBridge 167:e84263d55307 652 * @param rxflow Pin for the rxflow
AnnaBridge 167:e84263d55307 653 * @param txflow Pin for the txflow
AnnaBridge 167:e84263d55307 654 */
AnnaBridge 167:e84263d55307 655 void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow)
AnnaBridge 167:e84263d55307 656 {
AnnaBridge 167:e84263d55307 657 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 658
AnnaBridge 167:e84263d55307 659 // Determine the UART to use (UART_1, UART_2, ...)
AnnaBridge 167:e84263d55307 660 UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 661 UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 662
AnnaBridge 167:e84263d55307 663 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
AnnaBridge 167:e84263d55307 664 obj_s->uart = (UARTName)pinmap_merge(uart_cts, uart_rts);
AnnaBridge 167:e84263d55307 665 MBED_ASSERT(obj_s->uart != (UARTName)NC);
AnnaBridge 167:e84263d55307 666
AnnaBridge 167:e84263d55307 667 if(type == FlowControlNone) {
AnnaBridge 167:e84263d55307 668 // Disable hardware flow control
AnnaBridge 167:e84263d55307 669 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
AnnaBridge 167:e84263d55307 670 }
AnnaBridge 167:e84263d55307 671 if (type == FlowControlRTS) {
AnnaBridge 167:e84263d55307 672 // Enable RTS
AnnaBridge 167:e84263d55307 673 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 674 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS;
AnnaBridge 167:e84263d55307 675 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 676 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 677 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 678 }
AnnaBridge 167:e84263d55307 679 if (type == FlowControlCTS) {
AnnaBridge 167:e84263d55307 680 // Enable CTS
AnnaBridge 167:e84263d55307 681 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 682 obj_s->hw_flow_ctl = UART_HWCONTROL_CTS;
AnnaBridge 167:e84263d55307 683 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 684 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 685 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 686 }
AnnaBridge 167:e84263d55307 687 if (type == FlowControlRTSCTS) {
AnnaBridge 167:e84263d55307 688 // Enable CTS & RTS
AnnaBridge 167:e84263d55307 689 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 690 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 691 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS_CTS;
AnnaBridge 167:e84263d55307 692 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 693 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 694 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 695 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 696 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 697 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 698 }
AnnaBridge 167:e84263d55307 699
AnnaBridge 167:e84263d55307 700 init_uart(obj);
AnnaBridge 167:e84263d55307 701 }
AnnaBridge 167:e84263d55307 702
Anna Bridge 181:96ed750bd169 703 #endif /* DEVICE_SERIAL_FC */
AnnaBridge 167:e84263d55307 704
Anna Bridge 181:96ed750bd169 705 #endif /* DEVICE_SERIAL */