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_STM32L1/serial_device.c@186:707f6e361f3e, 2018-06-22 (annotated)

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

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 167:e84263d55307 1 /* mbed Microcontroller Library
AnnaBridge 167:e84263d55307 2 *******************************************************************************
Anna Bridge 180:96ed750bd169 3 * Copyright (c) 2017, STMicroelectronics
AnnaBridge 167:e84263d55307 4 * All rights reserved.
AnnaBridge 167:e84263d55307 5 *
AnnaBridge 167:e84263d55307 6 * Redistribution and use in source and binary forms, with or without
AnnaBridge 167:e84263d55307 7 * modification, are permitted provided that the following conditions are met:
AnnaBridge 167:e84263d55307 8 *
AnnaBridge 167:e84263d55307 9 * 1. Redistributions of source code must retain the above copyright notice,
AnnaBridge 167:e84263d55307 10 * this list of conditions and the following disclaimer.
AnnaBridge 167:e84263d55307 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
AnnaBridge 167:e84263d55307 12 * this list of conditions and the following disclaimer in the documentation
AnnaBridge 167:e84263d55307 13 * and/or other materials provided with the distribution.
AnnaBridge 167:e84263d55307 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
AnnaBridge 167:e84263d55307 15 * may be used to endorse or promote products derived from this software
AnnaBridge 167:e84263d55307 16 * without specific prior written permission.
AnnaBridge 167:e84263d55307 17 *
AnnaBridge 167:e84263d55307 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AnnaBridge 167:e84263d55307 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
AnnaBridge 167:e84263d55307 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
AnnaBridge 167:e84263d55307 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
AnnaBridge 167:e84263d55307 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
AnnaBridge 167:e84263d55307 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
AnnaBridge 167:e84263d55307 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
AnnaBridge 167:e84263d55307 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
AnnaBridge 167:e84263d55307 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
AnnaBridge 167:e84263d55307 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AnnaBridge 167:e84263d55307 28 *******************************************************************************
AnnaBridge 167:e84263d55307 29 */
AnnaBridge 167:e84263d55307 30
AnnaBridge 167:e84263d55307 31 #if DEVICE_SERIAL
AnnaBridge 167:e84263d55307 32
Anna Bridge 180:96ed750bd169 33 #include "serial_api_hal.h"
AnnaBridge 167:e84263d55307 34
AnnaBridge 167:e84263d55307 35 #define UART_NUM (5)
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 181:57724642e740 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, UART_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 181:57724642e740 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 181:57724642e740 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 181:57724642e740 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 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
AnnaBridge 167:e84263d55307 112 {
AnnaBridge 167:e84263d55307 113 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 114
AnnaBridge 167:e84263d55307 115 irq_handler = handler;
AnnaBridge 167:e84263d55307 116 serial_irq_ids[obj_s->index] = id;
AnnaBridge 167:e84263d55307 117 }
AnnaBridge 167:e84263d55307 118
AnnaBridge 167:e84263d55307 119 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
AnnaBridge 167:e84263d55307 120 {
AnnaBridge 167:e84263d55307 121 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 122 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 123 IRQn_Type irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 124 uint32_t vector = 0;
AnnaBridge 167:e84263d55307 125
AnnaBridge 181:57724642e740 126 switch (obj_s->uart) {
AnnaBridge 181:57724642e740 127 #if defined(USART1_BASE)
AnnaBridge 181:57724642e740 128 case UART_1:
AnnaBridge 181:57724642e740 129 irq_n = USART1_IRQn;
AnnaBridge 181:57724642e740 130 vector = (uint32_t)&uart1_irq;
AnnaBridge 181:57724642e740 131 break;
AnnaBridge 181:57724642e740 132 #endif
AnnaBridge 181:57724642e740 133 #if defined(USART2_BASE)
AnnaBridge 181:57724642e740 134 case UART_2:
AnnaBridge 181:57724642e740 135 irq_n = USART2_IRQn;
AnnaBridge 181:57724642e740 136 vector = (uint32_t)&uart2_irq;
AnnaBridge 181:57724642e740 137 break;
AnnaBridge 181:57724642e740 138 #endif
AnnaBridge 181:57724642e740 139 #if defined(USART3_BASE)
AnnaBridge 181:57724642e740 140 case UART_3:
AnnaBridge 181:57724642e740 141 irq_n = USART3_IRQn;
AnnaBridge 181:57724642e740 142 vector = (uint32_t)&uart3_irq;
AnnaBridge 181:57724642e740 143 break;
AnnaBridge 181:57724642e740 144 #endif
AnnaBridge 167:e84263d55307 145 #if defined(UART4_BASE)
AnnaBridge 181:57724642e740 146 case UART_4:
AnnaBridge 181:57724642e740 147 irq_n = UART4_IRQn;
AnnaBridge 181:57724642e740 148 vector = (uint32_t)&uart4_irq;
AnnaBridge 181:57724642e740 149 break;
AnnaBridge 167:e84263d55307 150 #endif
AnnaBridge 167:e84263d55307 151 #if defined(UART5_BASE)
AnnaBridge 181:57724642e740 152 case UART_5:
AnnaBridge 181:57724642e740 153 irq_n = UART5_IRQn;
AnnaBridge 181:57724642e740 154 vector = (uint32_t)&uart5_irq;
AnnaBridge 181:57724642e740 155 break;
AnnaBridge 181:57724642e740 156 #endif
AnnaBridge 167:e84263d55307 157 }
AnnaBridge 167:e84263d55307 158
AnnaBridge 167:e84263d55307 159 if (enable) {
AnnaBridge 167:e84263d55307 160 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 161 __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 162 } else { // TxIrq
Kojto 170:19eb464bc2be 163 __HAL_UART_ENABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 164 }
AnnaBridge 167:e84263d55307 165 NVIC_SetVector(irq_n, vector);
AnnaBridge 167:e84263d55307 166 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 167
AnnaBridge 167:e84263d55307 168 } else { // disable
AnnaBridge 167:e84263d55307 169 int all_disabled = 0;
AnnaBridge 167:e84263d55307 170 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 171 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 172 // Check if TxIrq is disabled too
AnnaBridge 167:e84263d55307 173 if ((huart->Instance->CR1 & USART_CR1_TXEIE) == 0) {
AnnaBridge 167:e84263d55307 174 all_disabled = 1;
AnnaBridge 167:e84263d55307 175 }
AnnaBridge 167:e84263d55307 176 } else { // TxIrq
Kojto 170:19eb464bc2be 177 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 178 // Check if RxIrq is disabled too
AnnaBridge 167:e84263d55307 179 if ((huart->Instance->CR1 & USART_CR1_RXNEIE) == 0) {
AnnaBridge 167:e84263d55307 180 all_disabled = 1;
AnnaBridge 167:e84263d55307 181 }
AnnaBridge 167:e84263d55307 182 }
AnnaBridge 167:e84263d55307 183
AnnaBridge 167:e84263d55307 184 if (all_disabled) {
AnnaBridge 167:e84263d55307 185 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 186 }
AnnaBridge 167:e84263d55307 187 }
AnnaBridge 167:e84263d55307 188 }
AnnaBridge 167:e84263d55307 189
AnnaBridge 167:e84263d55307 190 /******************************************************************************
AnnaBridge 167:e84263d55307 191 * READ/WRITE
AnnaBridge 167:e84263d55307 192 ******************************************************************************/
AnnaBridge 167:e84263d55307 193
AnnaBridge 167:e84263d55307 194 int serial_getc(serial_t *obj)
AnnaBridge 167:e84263d55307 195 {
AnnaBridge 167:e84263d55307 196 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 197 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 198
AnnaBridge 167:e84263d55307 199 while (!serial_readable(obj));
AnnaBridge 167:e84263d55307 200 if (obj_s->databits == UART_WORDLENGTH_8B) {
AnnaBridge 167:e84263d55307 201 return (int)(huart->Instance->DR & (uint8_t)0xFF);
AnnaBridge 167:e84263d55307 202 } else {
AnnaBridge 167:e84263d55307 203 return (int)(huart->Instance->DR & (uint16_t)0x1FF);
AnnaBridge 167:e84263d55307 204 }
AnnaBridge 167:e84263d55307 205 }
AnnaBridge 167:e84263d55307 206
AnnaBridge 167:e84263d55307 207 void serial_putc(serial_t *obj, int c)
AnnaBridge 167:e84263d55307 208 {
AnnaBridge 167:e84263d55307 209 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 210 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 211
AnnaBridge 167:e84263d55307 212 while (!serial_writable(obj));
AnnaBridge 167:e84263d55307 213 if (obj_s->databits == UART_WORDLENGTH_8B) {
AnnaBridge 167:e84263d55307 214 huart->Instance->DR = (uint8_t)(c & (uint8_t)0xFF);
AnnaBridge 167:e84263d55307 215 } else {
AnnaBridge 167:e84263d55307 216 huart->Instance->DR = (uint16_t)(c & (uint16_t)0x1FF);
AnnaBridge 167:e84263d55307 217 }
AnnaBridge 167:e84263d55307 218 }
AnnaBridge 167:e84263d55307 219
AnnaBridge 167:e84263d55307 220 void serial_clear(serial_t *obj)
AnnaBridge 167:e84263d55307 221 {
AnnaBridge 167:e84263d55307 222 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 223 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 224
AnnaBridge 167:e84263d55307 225 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 226 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 227 }
AnnaBridge 167:e84263d55307 228
AnnaBridge 167:e84263d55307 229 void serial_break_set(serial_t *obj)
AnnaBridge 167:e84263d55307 230 {
AnnaBridge 167:e84263d55307 231 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 232 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 233
AnnaBridge 167:e84263d55307 234 HAL_LIN_SendBreak(huart);
AnnaBridge 167:e84263d55307 235 }
AnnaBridge 167:e84263d55307 236
AnnaBridge 167:e84263d55307 237 #if DEVICE_SERIAL_ASYNCH
AnnaBridge 167:e84263d55307 238
AnnaBridge 167:e84263d55307 239 /******************************************************************************
AnnaBridge 167:e84263d55307 240 * LOCAL HELPER FUNCTIONS
AnnaBridge 167:e84263d55307 241 ******************************************************************************/
AnnaBridge 167:e84263d55307 242
AnnaBridge 167:e84263d55307 243 /**
AnnaBridge 167:e84263d55307 244 * Configure the TX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 245 *
AnnaBridge 167:e84263d55307 246 * @param obj The serial object.
AnnaBridge 167:e84263d55307 247 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 248 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 249 */
AnnaBridge 167:e84263d55307 250 static void serial_tx_buffer_set(serial_t *obj, void *tx, int tx_length, uint8_t width)
AnnaBridge 167:e84263d55307 251 {
AnnaBridge 167:e84263d55307 252 (void)width;
AnnaBridge 167:e84263d55307 253
AnnaBridge 167:e84263d55307 254 // Exit if a transmit is already on-going
AnnaBridge 167:e84263d55307 255 if (serial_tx_active(obj)) {
AnnaBridge 167:e84263d55307 256 return;
AnnaBridge 167:e84263d55307 257 }
AnnaBridge 167:e84263d55307 258
AnnaBridge 167:e84263d55307 259 obj->tx_buff.buffer = tx;
AnnaBridge 167:e84263d55307 260 obj->tx_buff.length = tx_length;
AnnaBridge 167:e84263d55307 261 obj->tx_buff.pos = 0;
AnnaBridge 167:e84263d55307 262 }
AnnaBridge 167:e84263d55307 263
AnnaBridge 167:e84263d55307 264 /**
AnnaBridge 167:e84263d55307 265 * Configure the RX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 266 *
AnnaBridge 167:e84263d55307 267 * @param obj The serial object.
AnnaBridge 167:e84263d55307 268 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 269 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 270 */
AnnaBridge 167:e84263d55307 271 static void serial_rx_buffer_set(serial_t *obj, void *rx, int rx_length, uint8_t width)
AnnaBridge 167:e84263d55307 272 {
AnnaBridge 167:e84263d55307 273 (void)width;
AnnaBridge 167:e84263d55307 274
AnnaBridge 167:e84263d55307 275 // Exit if a reception is already on-going
AnnaBridge 167:e84263d55307 276 if (serial_rx_active(obj)) {
AnnaBridge 167:e84263d55307 277 return;
AnnaBridge 167:e84263d55307 278 }
AnnaBridge 167:e84263d55307 279
AnnaBridge 167:e84263d55307 280 obj->rx_buff.buffer = rx;
AnnaBridge 167:e84263d55307 281 obj->rx_buff.length = rx_length;
AnnaBridge 167:e84263d55307 282 obj->rx_buff.pos = 0;
AnnaBridge 167:e84263d55307 283 }
AnnaBridge 167:e84263d55307 284
AnnaBridge 167:e84263d55307 285 /**
AnnaBridge 167:e84263d55307 286 * Configure events
AnnaBridge 167:e84263d55307 287 *
AnnaBridge 167:e84263d55307 288 * @param obj The serial object
AnnaBridge 167:e84263d55307 289 * @param event The logical OR of the events to configure
AnnaBridge 167:e84263d55307 290 * @param enable Set to non-zero to enable events, or zero to disable them
AnnaBridge 167:e84263d55307 291 */
AnnaBridge 167:e84263d55307 292 static void serial_enable_event(serial_t *obj, int event, uint8_t enable)
AnnaBridge 167:e84263d55307 293 {
AnnaBridge 167:e84263d55307 294 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 295
AnnaBridge 167:e84263d55307 296 // Shouldn't have to enable interrupt here, just need to keep track of the requested events.
AnnaBridge 167:e84263d55307 297 if (enable) {
AnnaBridge 167:e84263d55307 298 obj_s->events |= event;
AnnaBridge 167:e84263d55307 299 } else {
AnnaBridge 167:e84263d55307 300 obj_s->events &= ~event;
AnnaBridge 167:e84263d55307 301 }
AnnaBridge 167:e84263d55307 302 }
AnnaBridge 167:e84263d55307 303
AnnaBridge 167:e84263d55307 304
AnnaBridge 167:e84263d55307 305 /**
AnnaBridge 167:e84263d55307 306 * Get index of serial object TX IRQ, relating it to the physical peripheral.
AnnaBridge 167:e84263d55307 307 *
AnnaBridge 181:57724642e740 308 * @param uart_name i.e. UART_1, UART_2, ...
AnnaBridge 167:e84263d55307 309 * @return internal NVIC TX IRQ index of U(S)ART peripheral
AnnaBridge 167:e84263d55307 310 */
AnnaBridge 181:57724642e740 311 static IRQn_Type serial_get_irq_n(UARTName uart_name)
AnnaBridge 167:e84263d55307 312 {
AnnaBridge 167:e84263d55307 313 IRQn_Type irq_n;
AnnaBridge 167:e84263d55307 314
AnnaBridge 181:57724642e740 315 switch (uart_name) {
AnnaBridge 181:57724642e740 316 #if defined(USART1_BASE)
AnnaBridge 181:57724642e740 317 case UART_1:
AnnaBridge 167:e84263d55307 318 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 319 break;
AnnaBridge 181:57724642e740 320 #endif
AnnaBridge 181:57724642e740 321 #if defined(USART2_BASE)
AnnaBridge 181:57724642e740 322 case UART_2:
AnnaBridge 167:e84263d55307 323 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 324 break;
AnnaBridge 181:57724642e740 325 #endif
AnnaBridge 181:57724642e740 326 #if defined(USART3_BASE)
AnnaBridge 181:57724642e740 327 case UART_3:
AnnaBridge 167:e84263d55307 328 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 329 break;
AnnaBridge 181:57724642e740 330 #endif
AnnaBridge 167:e84263d55307 331 #if defined(UART4_BASE)
AnnaBridge 181:57724642e740 332 case UART_4:
AnnaBridge 167:e84263d55307 333 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 334 break;
AnnaBridge 167:e84263d55307 335 #endif
AnnaBridge 167:e84263d55307 336 #if defined(UART5_BASE)
AnnaBridge 181:57724642e740 337 case UART_5:
AnnaBridge 167:e84263d55307 338 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 339 break;
AnnaBridge 167:e84263d55307 340 #endif
AnnaBridge 167:e84263d55307 341 default:
AnnaBridge 167:e84263d55307 342 irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 343 }
AnnaBridge 181:57724642e740 344
AnnaBridge 167:e84263d55307 345 return irq_n;
AnnaBridge 167:e84263d55307 346 }
AnnaBridge 167:e84263d55307 347
AnnaBridge 167:e84263d55307 348 /******************************************************************************
AnnaBridge 167:e84263d55307 349 * MBED API FUNCTIONS
AnnaBridge 167:e84263d55307 350 ******************************************************************************/
AnnaBridge 167:e84263d55307 351
AnnaBridge 167:e84263d55307 352 /**
AnnaBridge 167:e84263d55307 353 * Begin asynchronous TX transfer. The used buffer is specified in the serial
AnnaBridge 167:e84263d55307 354 * object, tx_buff
AnnaBridge 167:e84263d55307 355 *
AnnaBridge 167:e84263d55307 356 * @param obj The serial object
AnnaBridge 167:e84263d55307 357 * @param tx The buffer for sending
AnnaBridge 167:e84263d55307 358 * @param tx_length The number of words to transmit
AnnaBridge 167:e84263d55307 359 * @param tx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 360 * @param handler The serial handler
AnnaBridge 167:e84263d55307 361 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 362 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 363 * @return Returns number of data transfered, or 0 otherwise
AnnaBridge 167:e84263d55307 364 */
AnnaBridge 167:e84263d55307 365 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 366 {
AnnaBridge 167:e84263d55307 367 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 368 (void) hint;
AnnaBridge 167:e84263d55307 369
AnnaBridge 167:e84263d55307 370 // Check buffer is ok
AnnaBridge 167:e84263d55307 371 MBED_ASSERT(tx != (void*)0);
AnnaBridge 167:e84263d55307 372 MBED_ASSERT(tx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 373
AnnaBridge 167:e84263d55307 374 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 375 UART_HandleTypeDef * huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 376
AnnaBridge 167:e84263d55307 377 if (tx_length == 0) {
AnnaBridge 167:e84263d55307 378 return 0;
AnnaBridge 167:e84263d55307 379 }
AnnaBridge 167:e84263d55307 380
AnnaBridge 167:e84263d55307 381 // Set up buffer
AnnaBridge 167:e84263d55307 382 serial_tx_buffer_set(obj, (void *)tx, tx_length, tx_width);
AnnaBridge 167:e84263d55307 383
AnnaBridge 167:e84263d55307 384 // Set up events
AnnaBridge 167:e84263d55307 385 serial_enable_event(obj, SERIAL_EVENT_TX_ALL, 0); // Clear all events
AnnaBridge 167:e84263d55307 386 serial_enable_event(obj, event, 1); // Set only the wanted events
AnnaBridge 167:e84263d55307 387
AnnaBridge 167:e84263d55307 388 // Enable interrupt
AnnaBridge 181:57724642e740 389 IRQn_Type irq_n = serial_get_irq_n(obj_s->uart);
AnnaBridge 167:e84263d55307 390 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 391 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 392 NVIC_SetPriority(irq_n, 1);
AnnaBridge 167:e84263d55307 393 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 394 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 395
AnnaBridge 167:e84263d55307 396 // the following function will enable UART_IT_TXE and error interrupts
AnnaBridge 167:e84263d55307 397 if (HAL_UART_Transmit_IT(huart, (uint8_t*)tx, tx_length) != HAL_OK) {
AnnaBridge 167:e84263d55307 398 return 0;
AnnaBridge 167:e84263d55307 399 }
AnnaBridge 167:e84263d55307 400
AnnaBridge 167:e84263d55307 401 return tx_length;
AnnaBridge 167:e84263d55307 402 }
AnnaBridge 167:e84263d55307 403
AnnaBridge 167:e84263d55307 404 /**
AnnaBridge 167:e84263d55307 405 * Begin asynchronous RX transfer (enable interrupt for data collecting)
AnnaBridge 167:e84263d55307 406 * The used buffer is specified in the serial object, rx_buff
AnnaBridge 167:e84263d55307 407 *
AnnaBridge 167:e84263d55307 408 * @param obj The serial object
AnnaBridge 167:e84263d55307 409 * @param rx The buffer for sending
AnnaBridge 167:e84263d55307 410 * @param rx_length The number of words to transmit
AnnaBridge 167:e84263d55307 411 * @param rx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 412 * @param handler The serial handler
AnnaBridge 167:e84263d55307 413 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 414 * @param handler The serial handler
AnnaBridge 167:e84263d55307 415 * @param char_match A character in range 0-254 to be matched
AnnaBridge 167:e84263d55307 416 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 417 */
AnnaBridge 167:e84263d55307 418 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 419 {
AnnaBridge 167:e84263d55307 420 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 421 (void) hint;
AnnaBridge 167:e84263d55307 422
AnnaBridge 167:e84263d55307 423 /* Sanity check arguments */
AnnaBridge 167:e84263d55307 424 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 425 MBED_ASSERT(rx != (void*)0);
AnnaBridge 167:e84263d55307 426 MBED_ASSERT(rx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 427
AnnaBridge 167:e84263d55307 428 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 429 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 430
AnnaBridge 167:e84263d55307 431 serial_enable_event(obj, SERIAL_EVENT_RX_ALL, 0);
AnnaBridge 167:e84263d55307 432 serial_enable_event(obj, event, 1);
AnnaBridge 167:e84263d55307 433
AnnaBridge 167:e84263d55307 434 // set CharMatch
AnnaBridge 167:e84263d55307 435 obj->char_match = char_match;
AnnaBridge 167:e84263d55307 436
AnnaBridge 167:e84263d55307 437 serial_rx_buffer_set(obj, rx, rx_length, rx_width);
AnnaBridge 167:e84263d55307 438
AnnaBridge 181:57724642e740 439 IRQn_Type irq_n = serial_get_irq_n(obj_s->uart);
AnnaBridge 167:e84263d55307 440 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 441 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 442 NVIC_SetPriority(irq_n, 0);
AnnaBridge 167:e84263d55307 443 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 444 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 445
AnnaBridge 167:e84263d55307 446 // following HAL function will enable the RXNE interrupt + error interrupts
AnnaBridge 167:e84263d55307 447 HAL_UART_Receive_IT(huart, (uint8_t*)rx, rx_length);
AnnaBridge 167:e84263d55307 448 }
AnnaBridge 167:e84263d55307 449
AnnaBridge 167:e84263d55307 450 /**
AnnaBridge 167:e84263d55307 451 * Attempts to determine if the serial peripheral is already in use for TX
AnnaBridge 167:e84263d55307 452 *
AnnaBridge 167:e84263d55307 453 * @param obj The serial object
AnnaBridge 167:e84263d55307 454 * @return Non-zero if the TX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 455 */
AnnaBridge 167:e84263d55307 456 uint8_t serial_tx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 457 {
AnnaBridge 167:e84263d55307 458 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 459
AnnaBridge 167:e84263d55307 460 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 461 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 462
AnnaBridge 167:e84263d55307 463 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_TX) ? 1 : 0);
AnnaBridge 167:e84263d55307 464 }
AnnaBridge 167:e84263d55307 465
AnnaBridge 167:e84263d55307 466 /**
AnnaBridge 167:e84263d55307 467 * Attempts to determine if the serial peripheral is already in use for RX
AnnaBridge 167:e84263d55307 468 *
AnnaBridge 167:e84263d55307 469 * @param obj The serial object
AnnaBridge 167:e84263d55307 470 * @return Non-zero if the RX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 471 */
AnnaBridge 167:e84263d55307 472 uint8_t serial_rx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 473 {
AnnaBridge 167:e84263d55307 474 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 475
AnnaBridge 167:e84263d55307 476 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 477 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 478
AnnaBridge 167:e84263d55307 479 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_RX) ? 1 : 0);
AnnaBridge 167:e84263d55307 480 }
AnnaBridge 167:e84263d55307 481
AnnaBridge 167:e84263d55307 482 void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 483 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 484 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 485 }
AnnaBridge 167:e84263d55307 486 }
AnnaBridge 167:e84263d55307 487
AnnaBridge 167:e84263d55307 488 void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 489 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 177:d650f5d4c87a 490 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear PE flag
AnnaBridge 167:e84263d55307 491 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
AnnaBridge 177:d650f5d4c87a 492 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear FE flag
AnnaBridge 167:e84263d55307 493 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) {
AnnaBridge 177:d650f5d4c87a 494 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear NE flag
AnnaBridge 167:e84263d55307 495 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 177:d650f5d4c87a 496 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear ORE flag
AnnaBridge 167:e84263d55307 497 }
AnnaBridge 167:e84263d55307 498 }
AnnaBridge 167:e84263d55307 499
AnnaBridge 167:e84263d55307 500 /**
AnnaBridge 167:e84263d55307 501 * The asynchronous TX and RX handler.
AnnaBridge 167:e84263d55307 502 *
AnnaBridge 167:e84263d55307 503 * @param obj The serial object
AnnaBridge 167:e84263d55307 504 * @return Returns event flags if a TX/RX transfer termination condition was met or 0 otherwise
AnnaBridge 167:e84263d55307 505 */
AnnaBridge 167:e84263d55307 506 int serial_irq_handler_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 507 {
AnnaBridge 167:e84263d55307 508 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 509 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 510
AnnaBridge 167:e84263d55307 511 volatile int return_event = 0;
AnnaBridge 167:e84263d55307 512 uint8_t *buf = (uint8_t*)(obj->rx_buff.buffer);
AnnaBridge 167:e84263d55307 513 uint8_t i = 0;
AnnaBridge 167:e84263d55307 514
AnnaBridge 167:e84263d55307 515 // TX PART:
AnnaBridge 167:e84263d55307 516 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 517 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
AnnaBridge 167:e84263d55307 518 // Return event SERIAL_EVENT_TX_COMPLETE if requested
AnnaBridge 167:e84263d55307 519 if ((obj_s->events & SERIAL_EVENT_TX_COMPLETE ) != 0) {
AnnaBridge 167:e84263d55307 520 return_event |= (SERIAL_EVENT_TX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 521 }
AnnaBridge 167:e84263d55307 522 }
AnnaBridge 167:e84263d55307 523 }
AnnaBridge 167:e84263d55307 524
AnnaBridge 167:e84263d55307 525 // Handle error events
AnnaBridge 167:e84263d55307 526 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 167:e84263d55307 527 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 528 return_event |= (SERIAL_EVENT_RX_PARITY_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 529 }
AnnaBridge 167:e84263d55307 530 }
AnnaBridge 167:e84263d55307 531
AnnaBridge 167:e84263d55307 532 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
AnnaBridge 167:e84263d55307 533 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 534 return_event |= (SERIAL_EVENT_RX_FRAMING_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 535 }
AnnaBridge 167:e84263d55307 536 }
AnnaBridge 167:e84263d55307 537
AnnaBridge 167:e84263d55307 538 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 167:e84263d55307 539 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 540 return_event |= (SERIAL_EVENT_RX_OVERRUN_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 541 }
AnnaBridge 167:e84263d55307 542 }
AnnaBridge 167:e84263d55307 543
AnnaBridge 167:e84263d55307 544 HAL_UART_IRQHandler(huart);
AnnaBridge 167:e84263d55307 545
AnnaBridge 167:e84263d55307 546 // Abort if an error occurs
AnnaBridge 177:d650f5d4c87a 547 if ((return_event & SERIAL_EVENT_RX_PARITY_ERROR) ||
AnnaBridge 177:d650f5d4c87a 548 (return_event & SERIAL_EVENT_RX_FRAMING_ERROR) ||
AnnaBridge 177:d650f5d4c87a 549 (return_event & SERIAL_EVENT_RX_OVERRUN_ERROR)) {
AnnaBridge 167:e84263d55307 550 return return_event;
AnnaBridge 167:e84263d55307 551 }
AnnaBridge 167:e84263d55307 552
AnnaBridge 167:e84263d55307 553 //RX PART
AnnaBridge 167:e84263d55307 554 if (huart->RxXferSize != 0) {
AnnaBridge 167:e84263d55307 555 obj->rx_buff.pos = huart->RxXferSize - huart->RxXferCount;
AnnaBridge 167:e84263d55307 556 }
AnnaBridge 167:e84263d55307 557 if ((huart->RxXferCount == 0) && (obj->rx_buff.pos >= (obj->rx_buff.length - 1))) {
AnnaBridge 167:e84263d55307 558 return_event |= (SERIAL_EVENT_RX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 559 }
AnnaBridge 167:e84263d55307 560
AnnaBridge 167:e84263d55307 561 // Check if char_match is present
AnnaBridge 167:e84263d55307 562 if (obj_s->events & SERIAL_EVENT_RX_CHARACTER_MATCH) {
AnnaBridge 167:e84263d55307 563 if (buf != NULL) {
AnnaBridge 167:e84263d55307 564 for (i = 0; i < obj->rx_buff.pos; i++) {
AnnaBridge 167:e84263d55307 565 if (buf[i] == obj->char_match) {
AnnaBridge 167:e84263d55307 566 obj->rx_buff.pos = i;
AnnaBridge 167:e84263d55307 567 return_event |= (SERIAL_EVENT_RX_CHARACTER_MATCH & obj_s->events);
AnnaBridge 167:e84263d55307 568 serial_rx_abort_asynch(obj);
AnnaBridge 167:e84263d55307 569 break;
AnnaBridge 167:e84263d55307 570 }
AnnaBridge 167:e84263d55307 571 }
AnnaBridge 167:e84263d55307 572 }
AnnaBridge 167:e84263d55307 573 }
AnnaBridge 167:e84263d55307 574
AnnaBridge 167:e84263d55307 575 return return_event;
AnnaBridge 167:e84263d55307 576 }
AnnaBridge 167:e84263d55307 577
AnnaBridge 167:e84263d55307 578 /**
AnnaBridge 167:e84263d55307 579 * Abort the ongoing TX transaction. It disables the enabled interupt for TX and
AnnaBridge 167:e84263d55307 580 * flush TX hardware buffer if TX FIFO is used
AnnaBridge 167:e84263d55307 581 *
AnnaBridge 167:e84263d55307 582 * @param obj The serial object
AnnaBridge 167:e84263d55307 583 */
AnnaBridge 167:e84263d55307 584 void serial_tx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 585 {
AnnaBridge 167:e84263d55307 586 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 587 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 588
AnnaBridge 167:e84263d55307 589 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
AnnaBridge 167:e84263d55307 590 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 591
AnnaBridge 167:e84263d55307 592 // clear flags
AnnaBridge 167:e84263d55307 593 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 594
AnnaBridge 167:e84263d55307 595 // reset states
AnnaBridge 167:e84263d55307 596 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 597 // update handle state
AnnaBridge 167:e84263d55307 598 if(huart->State == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 599 huart->State = HAL_UART_STATE_BUSY_RX;
AnnaBridge 167:e84263d55307 600 } else {
AnnaBridge 167:e84263d55307 601 huart->State = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 602 }
AnnaBridge 167:e84263d55307 603 }
AnnaBridge 167:e84263d55307 604
AnnaBridge 167:e84263d55307 605 /**
AnnaBridge 167:e84263d55307 606 * Abort the ongoing RX transaction It disables the enabled interrupt for RX and
AnnaBridge 167:e84263d55307 607 * flush RX hardware buffer if RX FIFO is used
AnnaBridge 167:e84263d55307 608 *
AnnaBridge 167:e84263d55307 609 * @param obj The serial object
AnnaBridge 167:e84263d55307 610 */
AnnaBridge 167:e84263d55307 611 void serial_rx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 612 {
AnnaBridge 167:e84263d55307 613 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 614 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 615
AnnaBridge 167:e84263d55307 616 // disable interrupts
AnnaBridge 167:e84263d55307 617 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 618 __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
AnnaBridge 167:e84263d55307 619 __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
AnnaBridge 167:e84263d55307 620
AnnaBridge 167:e84263d55307 621 // clear flags
AnnaBridge 167:e84263d55307 622 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_RXNE);
AnnaBridge 177:d650f5d4c87a 623 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear errors flag
AnnaBridge 167:e84263d55307 624
AnnaBridge 167:e84263d55307 625 // reset states
AnnaBridge 167:e84263d55307 626 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 627 // update handle state
AnnaBridge 167:e84263d55307 628 if(huart->State == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 629 huart->State = HAL_UART_STATE_BUSY_TX;
AnnaBridge 167:e84263d55307 630 } else {
AnnaBridge 167:e84263d55307 631 huart->State = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 632 }
AnnaBridge 167:e84263d55307 633 }
AnnaBridge 167:e84263d55307 634
Anna Bridge 180:96ed750bd169 635 #endif /* DEVICE_SERIAL_ASYNCH */
AnnaBridge 167:e84263d55307 636
AnnaBridge 167:e84263d55307 637 #if DEVICE_SERIAL_FC
AnnaBridge 167:e84263d55307 638
AnnaBridge 167:e84263d55307 639 /**
AnnaBridge 167:e84263d55307 640 * Set HW Control Flow
AnnaBridge 167:e84263d55307 641 * @param obj The serial object
AnnaBridge 167:e84263d55307 642 * @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS)
AnnaBridge 167:e84263d55307 643 * @param rxflow Pin for the rxflow
AnnaBridge 167:e84263d55307 644 * @param txflow Pin for the txflow
AnnaBridge 167:e84263d55307 645 */
AnnaBridge 167:e84263d55307 646 void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow)
AnnaBridge 167:e84263d55307 647 {
AnnaBridge 167:e84263d55307 648 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 649
AnnaBridge 167:e84263d55307 650 // Determine the UART to use (UART_1, UART_2, ...)
AnnaBridge 167:e84263d55307 651 UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 652 UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 653
AnnaBridge 167:e84263d55307 654 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
AnnaBridge 167:e84263d55307 655 obj_s->uart = (UARTName)pinmap_merge(uart_cts, uart_rts);
AnnaBridge 167:e84263d55307 656 MBED_ASSERT(obj_s->uart != (UARTName)NC);
AnnaBridge 167:e84263d55307 657
AnnaBridge 167:e84263d55307 658 if(type == FlowControlNone) {
AnnaBridge 167:e84263d55307 659 // Disable hardware flow control
AnnaBridge 167:e84263d55307 660 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
AnnaBridge 167:e84263d55307 661 }
AnnaBridge 167:e84263d55307 662 if (type == FlowControlRTS) {
AnnaBridge 167:e84263d55307 663 // Enable RTS
AnnaBridge 167:e84263d55307 664 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 665 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS;
AnnaBridge 167:e84263d55307 666 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 667 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 668 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 669 }
AnnaBridge 167:e84263d55307 670 if (type == FlowControlCTS) {
AnnaBridge 167:e84263d55307 671 // Enable CTS
AnnaBridge 167:e84263d55307 672 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 673 obj_s->hw_flow_ctl = UART_HWCONTROL_CTS;
AnnaBridge 167:e84263d55307 674 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 675 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 676 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 677 }
AnnaBridge 167:e84263d55307 678 if (type == FlowControlRTSCTS) {
AnnaBridge 167:e84263d55307 679 // Enable CTS & RTS
AnnaBridge 167:e84263d55307 680 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 681 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 682 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS_CTS;
AnnaBridge 167:e84263d55307 683 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 684 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 685 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 686 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 687 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 688 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 689 }
AnnaBridge 167:e84263d55307 690
AnnaBridge 167:e84263d55307 691 init_uart(obj);
AnnaBridge 167:e84263d55307 692 }
AnnaBridge 167:e84263d55307 693
Anna Bridge 180:96ed750bd169 694 #endif /* DEVICE_SERIAL_FC */
AnnaBridge 167:e84263d55307 695
Anna Bridge 180:96ed750bd169 696 #endif /* DEVICE_SERIAL */