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_STM32F0/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_STM32F031K6)
Anna Bridge 180:96ed750bd169 36 #define UART_NUM (1)
AnnaBridge 167:e84263d55307 37 #elif defined (TARGET_STM32F030R8) || defined (TARGET_STM32F051R8) || defined (TARGET_STM32F042K6)
AnnaBridge 167:e84263d55307 38 #define UART_NUM (2)
Anna Bridge 180:96ed750bd169 39 #elif defined (TARGET_STM32F070RB) || defined (TARGET_STM32F072RB)
Anna Bridge 180:96ed750bd169 40 #define UART_NUM (4)
AnnaBridge 167:e84263d55307 41 #else
Anna Bridge 180:96ed750bd169 42 #define UART_NUM (8) // max value (TARGET_STM32F091RC)
AnnaBridge 167:e84263d55307 43 #endif
AnnaBridge 167:e84263d55307 44
Anna Bridge 180:96ed750bd169 45 uint32_t serial_irq_ids[UART_NUM] = {0};
AnnaBridge 167:e84263d55307 46 UART_HandleTypeDef uart_handlers[UART_NUM];
AnnaBridge 167:e84263d55307 47
AnnaBridge 167:e84263d55307 48 static uart_irq_handler irq_handler;
AnnaBridge 167:e84263d55307 49
AnnaBridge 167:e84263d55307 50 /******************************************************************************
AnnaBridge 167:e84263d55307 51 * INTERRUPTS HANDLING
AnnaBridge 167:e84263d55307 52 ******************************************************************************/
AnnaBridge 167:e84263d55307 53
AnnaBridge 167:e84263d55307 54 static void uart_irq(int id)
AnnaBridge 167:e84263d55307 55 {
AnnaBridge 167:e84263d55307 56 UART_HandleTypeDef * huart = &uart_handlers[id];
AnnaBridge 167:e84263d55307 57
AnnaBridge 167:e84263d55307 58 if (serial_irq_ids[id] != 0) {
Kojto 170:19eb464bc2be 59 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TXE) != RESET) {
Kojto 170:19eb464bc2be 60 if (__HAL_UART_GET_IT(huart, UART_IT_TXE) != RESET) {
AnnaBridge 167:e84263d55307 61 irq_handler(serial_irq_ids[id], TxIrq);
AnnaBridge 167:e84263d55307 62 }
AnnaBridge 167:e84263d55307 63 }
AnnaBridge 167:e84263d55307 64 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) {
Kojto 169:e3b6fe271b81 65 if (__HAL_UART_GET_IT(huart, UART_IT_RXNE) != RESET) {
AnnaBridge 167:e84263d55307 66 irq_handler(serial_irq_ids[id], RxIrq);
Kojto 170:19eb464bc2be 67 /* Flag has been cleared when reading the content */
AnnaBridge 167:e84263d55307 68 }
AnnaBridge 167:e84263d55307 69 }
AnnaBridge 167:e84263d55307 70 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
Kojto 169:e3b6fe271b81 71 if (__HAL_UART_GET_IT(huart, UART_IT_ORE) != RESET) {
AnnaBridge 167:e84263d55307 72 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
AnnaBridge 167:e84263d55307 73 }
AnnaBridge 167:e84263d55307 74 }
AnnaBridge 167:e84263d55307 75 }
AnnaBridge 167:e84263d55307 76 }
AnnaBridge 167:e84263d55307 77
AnnaBridge 167:e84263d55307 78 static void uart1_irq(void)
AnnaBridge 167:e84263d55307 79 {
AnnaBridge 167:e84263d55307 80 uart_irq(0);
AnnaBridge 167:e84263d55307 81 }
AnnaBridge 167:e84263d55307 82
AnnaBridge 167:e84263d55307 83 #if defined(USART2_BASE)
AnnaBridge 167:e84263d55307 84 static void uart2_irq(void)
AnnaBridge 167:e84263d55307 85 {
AnnaBridge 167:e84263d55307 86 uart_irq(1);
AnnaBridge 167:e84263d55307 87 }
AnnaBridge 167:e84263d55307 88 #endif
AnnaBridge 167:e84263d55307 89
AnnaBridge 167:e84263d55307 90 #if defined USART3_BASE
AnnaBridge 167:e84263d55307 91 static void uart3_irq(void)
AnnaBridge 167:e84263d55307 92 {
AnnaBridge 167:e84263d55307 93 uart_irq(2);
AnnaBridge 167:e84263d55307 94 }
AnnaBridge 167:e84263d55307 95 #endif
AnnaBridge 167:e84263d55307 96
AnnaBridge 167:e84263d55307 97 #if defined USART4_BASE
AnnaBridge 167:e84263d55307 98 static void uart4_irq(void)
AnnaBridge 167:e84263d55307 99 {
AnnaBridge 167:e84263d55307 100 uart_irq(3);
AnnaBridge 167:e84263d55307 101 }
AnnaBridge 167:e84263d55307 102 #endif
AnnaBridge 167:e84263d55307 103
AnnaBridge 167:e84263d55307 104 #if defined USART5_BASE
AnnaBridge 167:e84263d55307 105 static void uart5_irq(void)
AnnaBridge 167:e84263d55307 106 {
AnnaBridge 167:e84263d55307 107 uart_irq(4);
AnnaBridge 167:e84263d55307 108 }
AnnaBridge 167:e84263d55307 109 #endif
AnnaBridge 167:e84263d55307 110
AnnaBridge 167:e84263d55307 111 #if defined USART6_BASE
AnnaBridge 167:e84263d55307 112 static void uart6_irq(void)
AnnaBridge 167:e84263d55307 113 {
AnnaBridge 167:e84263d55307 114 uart_irq(5);
AnnaBridge 167:e84263d55307 115 }
AnnaBridge 167:e84263d55307 116 #endif
AnnaBridge 167:e84263d55307 117
AnnaBridge 167:e84263d55307 118 #if defined USART7_BASE
AnnaBridge 167:e84263d55307 119 static void uart7_irq(void)
AnnaBridge 167:e84263d55307 120 {
AnnaBridge 167:e84263d55307 121 uart_irq(6);
AnnaBridge 167:e84263d55307 122 }
AnnaBridge 167:e84263d55307 123 #endif
AnnaBridge 167:e84263d55307 124
AnnaBridge 167:e84263d55307 125 #if defined USART8_BASE
AnnaBridge 167:e84263d55307 126 static void uart8_irq(void)
AnnaBridge 167:e84263d55307 127 {
AnnaBridge 167:e84263d55307 128 uart_irq(7);
AnnaBridge 167:e84263d55307 129 }
AnnaBridge 167:e84263d55307 130 #endif
AnnaBridge 167:e84263d55307 131
AnnaBridge 167:e84263d55307 132 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
AnnaBridge 167:e84263d55307 133 {
AnnaBridge 167:e84263d55307 134 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 135
AnnaBridge 167:e84263d55307 136 irq_handler = handler;
AnnaBridge 167:e84263d55307 137 serial_irq_ids[obj_s->index] = id;
AnnaBridge 167:e84263d55307 138 }
AnnaBridge 167:e84263d55307 139
AnnaBridge 167:e84263d55307 140 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
AnnaBridge 167:e84263d55307 141 {
AnnaBridge 167:e84263d55307 142 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 143 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 144 IRQn_Type irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 145 uint32_t vector = 0;
AnnaBridge 167:e84263d55307 146
AnnaBridge 167:e84263d55307 147 if (obj_s->uart == UART_1) {
AnnaBridge 167:e84263d55307 148 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 149 vector = (uint32_t)&uart1_irq;
AnnaBridge 167:e84263d55307 150 }
AnnaBridge 167:e84263d55307 151
AnnaBridge 167:e84263d55307 152 #if defined(USART2_BASE)
AnnaBridge 167:e84263d55307 153 if (obj_s->uart == UART_2) {
AnnaBridge 167:e84263d55307 154 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 155 vector = (uint32_t)&uart2_irq;
AnnaBridge 167:e84263d55307 156 }
AnnaBridge 167:e84263d55307 157 #endif
AnnaBridge 167:e84263d55307 158
AnnaBridge 167:e84263d55307 159 #if defined (TARGET_STM32F091RC)
AnnaBridge 167:e84263d55307 160 if (obj_s->uart == UART_3) {
AnnaBridge 167:e84263d55307 161 irq_n = USART3_8_IRQn;
AnnaBridge 167:e84263d55307 162 vector = (uint32_t)&uart3_irq;
AnnaBridge 167:e84263d55307 163 }
AnnaBridge 167:e84263d55307 164
AnnaBridge 167:e84263d55307 165 if (obj_s->uart == UART_4) {
AnnaBridge 167:e84263d55307 166 irq_n = USART3_8_IRQn;
AnnaBridge 167:e84263d55307 167 vector = (uint32_t)&uart4_irq;
AnnaBridge 167:e84263d55307 168 }
AnnaBridge 167:e84263d55307 169
AnnaBridge 167:e84263d55307 170 if (obj_s->uart == UART_5) {
AnnaBridge 167:e84263d55307 171 irq_n = USART3_8_IRQn;
AnnaBridge 167:e84263d55307 172 vector = (uint32_t)&uart5_irq;
AnnaBridge 167:e84263d55307 173 }
AnnaBridge 167:e84263d55307 174
AnnaBridge 167:e84263d55307 175 if (obj_s->uart == UART_6) {
AnnaBridge 167:e84263d55307 176 irq_n = USART3_8_IRQn;
AnnaBridge 167:e84263d55307 177 vector = (uint32_t)&uart6_irq;
AnnaBridge 167:e84263d55307 178 }
AnnaBridge 167:e84263d55307 179
AnnaBridge 167:e84263d55307 180 if (obj_s->uart == UART_7) {
AnnaBridge 167:e84263d55307 181 irq_n = USART3_8_IRQn;
AnnaBridge 167:e84263d55307 182 vector = (uint32_t)&uart7_irq;
AnnaBridge 167:e84263d55307 183 }
AnnaBridge 167:e84263d55307 184
AnnaBridge 167:e84263d55307 185 if (obj_s->uart == UART_8) {
AnnaBridge 167:e84263d55307 186 irq_n = USART3_8_IRQn;
AnnaBridge 167:e84263d55307 187 vector = (uint32_t)&uart8_irq;
AnnaBridge 167:e84263d55307 188 }
AnnaBridge 167:e84263d55307 189
AnnaBridge 167:e84263d55307 190 #elif defined (TARGET_STM32F030R8) || defined (TARGET_STM32F051R8)
AnnaBridge 167:e84263d55307 191
AnnaBridge 167:e84263d55307 192 #else
AnnaBridge 167:e84263d55307 193 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 194 if (obj_s->uart == UART_3) {
AnnaBridge 167:e84263d55307 195 irq_n = USART3_4_IRQn;
AnnaBridge 167:e84263d55307 196 vector = (uint32_t)&uart3_irq;
AnnaBridge 167:e84263d55307 197 }
AnnaBridge 167:e84263d55307 198 #endif
AnnaBridge 167:e84263d55307 199
AnnaBridge 167:e84263d55307 200 #if defined(USART4_BASE)
AnnaBridge 167:e84263d55307 201 if (obj_s->uart == UART_4) {
AnnaBridge 167:e84263d55307 202 irq_n = USART3_4_IRQn;
AnnaBridge 167:e84263d55307 203 vector = (uint32_t)&uart4_irq;
AnnaBridge 167:e84263d55307 204 }
AnnaBridge 167:e84263d55307 205 #endif
AnnaBridge 167:e84263d55307 206 #endif
AnnaBridge 167:e84263d55307 207
AnnaBridge 167:e84263d55307 208 if (enable) {
AnnaBridge 167:e84263d55307 209 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 210 __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 211 } else { // TxIrq
Kojto 170:19eb464bc2be 212 __HAL_UART_ENABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 213 }
AnnaBridge 167:e84263d55307 214 NVIC_SetVector(irq_n, vector);
AnnaBridge 167:e84263d55307 215 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 216
AnnaBridge 167:e84263d55307 217 } else { // disable
AnnaBridge 167:e84263d55307 218 int all_disabled = 0;
AnnaBridge 167:e84263d55307 219 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 220 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 221 // Check if TxIrq is disabled too
AnnaBridge 167:e84263d55307 222 if ((huart->Instance->CR1 & USART_CR1_TXEIE) == 0) {
AnnaBridge 167:e84263d55307 223 all_disabled = 1;
AnnaBridge 167:e84263d55307 224 }
AnnaBridge 167:e84263d55307 225 } else { // TxIrq
Kojto 170:19eb464bc2be 226 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 227 // Check if RxIrq is disabled too
AnnaBridge 167:e84263d55307 228 if ((huart->Instance->CR1 & USART_CR1_RXNEIE) == 0) {
AnnaBridge 167:e84263d55307 229 all_disabled = 1;
AnnaBridge 167:e84263d55307 230 }
AnnaBridge 167:e84263d55307 231 }
AnnaBridge 167:e84263d55307 232
AnnaBridge 167:e84263d55307 233 if (all_disabled) {
AnnaBridge 167:e84263d55307 234 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 235 }
AnnaBridge 167:e84263d55307 236 }
AnnaBridge 167:e84263d55307 237 }
AnnaBridge 167:e84263d55307 238
AnnaBridge 167:e84263d55307 239 /******************************************************************************
AnnaBridge 167:e84263d55307 240 * READ/WRITE
AnnaBridge 167:e84263d55307 241 ******************************************************************************/
AnnaBridge 167:e84263d55307 242
AnnaBridge 167:e84263d55307 243 int serial_getc(serial_t *obj)
AnnaBridge 167:e84263d55307 244 {
AnnaBridge 167:e84263d55307 245 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 246 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 247
AnnaBridge 167:e84263d55307 248 while (!serial_readable(obj));
AnnaBridge 167:e84263d55307 249 return (int)(huart->Instance->RDR & (uint16_t)0xFF);
AnnaBridge 167:e84263d55307 250 }
AnnaBridge 167:e84263d55307 251
AnnaBridge 167:e84263d55307 252 void serial_putc(serial_t *obj, int c)
AnnaBridge 167:e84263d55307 253 {
AnnaBridge 167:e84263d55307 254 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 255 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 256
AnnaBridge 167:e84263d55307 257 while (!serial_writable(obj));
AnnaBridge 167:e84263d55307 258 huart->Instance->TDR = (uint32_t)(c & (uint16_t)0xFF);
AnnaBridge 167:e84263d55307 259 }
AnnaBridge 167:e84263d55307 260
AnnaBridge 167:e84263d55307 261 void serial_clear(serial_t *obj)
AnnaBridge 167:e84263d55307 262 {
AnnaBridge 167:e84263d55307 263 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 264 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 265
AnnaBridge 167:e84263d55307 266 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 267 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 268 }
AnnaBridge 167:e84263d55307 269
AnnaBridge 167:e84263d55307 270 void serial_break_set(serial_t *obj)
AnnaBridge 167:e84263d55307 271 {
AnnaBridge 167:e84263d55307 272 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 177:d650f5d4c87a 273 UART_HandleTypeDef *huart __attribute__((unused)) = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 274 }
AnnaBridge 167:e84263d55307 275
AnnaBridge 167:e84263d55307 276 #if DEVICE_SERIAL_ASYNCH
AnnaBridge 167:e84263d55307 277
AnnaBridge 167:e84263d55307 278 /******************************************************************************
AnnaBridge 167:e84263d55307 279 * LOCAL HELPER FUNCTIONS
AnnaBridge 167:e84263d55307 280 ******************************************************************************/
AnnaBridge 167:e84263d55307 281
AnnaBridge 167:e84263d55307 282 /**
AnnaBridge 167:e84263d55307 283 * Configure the TX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 284 *
AnnaBridge 167:e84263d55307 285 * @param obj The serial object.
AnnaBridge 167:e84263d55307 286 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 287 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 288 */
AnnaBridge 167:e84263d55307 289 static void serial_tx_buffer_set(serial_t *obj, void *tx, int tx_length, uint8_t width)
AnnaBridge 167:e84263d55307 290 {
AnnaBridge 167:e84263d55307 291 (void)width;
AnnaBridge 167:e84263d55307 292
AnnaBridge 167:e84263d55307 293 // Exit if a transmit is already on-going
AnnaBridge 167:e84263d55307 294 if (serial_tx_active(obj)) {
AnnaBridge 167:e84263d55307 295 return;
AnnaBridge 167:e84263d55307 296 }
AnnaBridge 167:e84263d55307 297
AnnaBridge 167:e84263d55307 298 obj->tx_buff.buffer = tx;
AnnaBridge 167:e84263d55307 299 obj->tx_buff.length = tx_length;
AnnaBridge 167:e84263d55307 300 obj->tx_buff.pos = 0;
AnnaBridge 167:e84263d55307 301 }
AnnaBridge 167:e84263d55307 302
AnnaBridge 167:e84263d55307 303 /**
AnnaBridge 167:e84263d55307 304 * Configure the RX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 305 *
AnnaBridge 167:e84263d55307 306 * @param obj The serial object.
AnnaBridge 167:e84263d55307 307 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 308 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 309 */
AnnaBridge 167:e84263d55307 310 static void serial_rx_buffer_set(serial_t *obj, void *rx, int rx_length, uint8_t width)
AnnaBridge 167:e84263d55307 311 {
AnnaBridge 167:e84263d55307 312 (void)width;
AnnaBridge 167:e84263d55307 313
AnnaBridge 167:e84263d55307 314 // Exit if a reception is already on-going
AnnaBridge 167:e84263d55307 315 if (serial_rx_active(obj)) {
AnnaBridge 167:e84263d55307 316 return;
AnnaBridge 167:e84263d55307 317 }
AnnaBridge 167:e84263d55307 318
AnnaBridge 167:e84263d55307 319 obj->rx_buff.buffer = rx;
AnnaBridge 167:e84263d55307 320 obj->rx_buff.length = rx_length;
AnnaBridge 167:e84263d55307 321 obj->rx_buff.pos = 0;
AnnaBridge 167:e84263d55307 322 }
AnnaBridge 167:e84263d55307 323
AnnaBridge 167:e84263d55307 324 /**
AnnaBridge 167:e84263d55307 325 * Configure events
AnnaBridge 167:e84263d55307 326 *
AnnaBridge 167:e84263d55307 327 * @param obj The serial object
AnnaBridge 167:e84263d55307 328 * @param event The logical OR of the events to configure
AnnaBridge 167:e84263d55307 329 * @param enable Set to non-zero to enable events, or zero to disable them
AnnaBridge 167:e84263d55307 330 */
AnnaBridge 167:e84263d55307 331 static void serial_enable_event(serial_t *obj, int event, uint8_t enable)
AnnaBridge 167:e84263d55307 332 {
AnnaBridge 167:e84263d55307 333 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 334
AnnaBridge 167:e84263d55307 335 // Shouldn't have to enable interrupt here, just need to keep track of the requested events.
AnnaBridge 167:e84263d55307 336 if (enable) {
AnnaBridge 167:e84263d55307 337 obj_s->events |= event;
AnnaBridge 167:e84263d55307 338 } else {
AnnaBridge 167:e84263d55307 339 obj_s->events &= ~event;
AnnaBridge 167:e84263d55307 340 }
AnnaBridge 167:e84263d55307 341 }
AnnaBridge 167:e84263d55307 342
AnnaBridge 167:e84263d55307 343
AnnaBridge 167:e84263d55307 344 /**
AnnaBridge 167:e84263d55307 345 * Get index of serial object TX IRQ, relating it to the physical peripheral.
AnnaBridge 167:e84263d55307 346 *
AnnaBridge 167:e84263d55307 347 * @param obj pointer to serial object
AnnaBridge 167:e84263d55307 348 * @return internal NVIC TX IRQ index of U(S)ART peripheral
AnnaBridge 167:e84263d55307 349 */
AnnaBridge 167:e84263d55307 350 static IRQn_Type serial_get_irq_n(serial_t *obj)
AnnaBridge 167:e84263d55307 351 {
AnnaBridge 167:e84263d55307 352 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 353 IRQn_Type irq_n;
AnnaBridge 167:e84263d55307 354
AnnaBridge 167:e84263d55307 355 switch (obj_s->index) {
AnnaBridge 167:e84263d55307 356 #if defined(USART1_BASE)
AnnaBridge 167:e84263d55307 357 case 0:
AnnaBridge 167:e84263d55307 358 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 359 break;
AnnaBridge 167:e84263d55307 360 #endif
AnnaBridge 167:e84263d55307 361 #if defined(USART2_BASE)
AnnaBridge 167:e84263d55307 362 case 1:
AnnaBridge 167:e84263d55307 363 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 364 break;
AnnaBridge 167:e84263d55307 365 #endif
AnnaBridge 167:e84263d55307 366 #if defined (TARGET_STM32F091RC)
AnnaBridge 167:e84263d55307 367 case 2:
AnnaBridge 167:e84263d55307 368 case 3:
AnnaBridge 167:e84263d55307 369 case 4:
AnnaBridge 167:e84263d55307 370 case 5:
AnnaBridge 167:e84263d55307 371 case 6:
AnnaBridge 167:e84263d55307 372 case 7:
AnnaBridge 167:e84263d55307 373 irq_n = USART3_8_IRQn;
AnnaBridge 167:e84263d55307 374 break;
AnnaBridge 167:e84263d55307 375 #elif !defined (TARGET_STM32F030R8) && !defined (TARGET_STM32F051R8)
AnnaBridge 167:e84263d55307 376 case 2:
AnnaBridge 167:e84263d55307 377 case 3:
AnnaBridge 167:e84263d55307 378 irq_n = USART3_4_IRQn;
AnnaBridge 167:e84263d55307 379 break;
AnnaBridge 167:e84263d55307 380 #endif
AnnaBridge 167:e84263d55307 381 default:
AnnaBridge 167:e84263d55307 382 irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 383 }
AnnaBridge 167:e84263d55307 384
AnnaBridge 167:e84263d55307 385 return irq_n;
AnnaBridge 167:e84263d55307 386 }
AnnaBridge 167:e84263d55307 387
AnnaBridge 167:e84263d55307 388
AnnaBridge 167:e84263d55307 389 /******************************************************************************
AnnaBridge 167:e84263d55307 390 * MBED API FUNCTIONS
AnnaBridge 167:e84263d55307 391 ******************************************************************************/
AnnaBridge 167:e84263d55307 392
AnnaBridge 167:e84263d55307 393 /**
AnnaBridge 167:e84263d55307 394 * Begin asynchronous TX transfer. The used buffer is specified in the serial
AnnaBridge 167:e84263d55307 395 * object, tx_buff
AnnaBridge 167:e84263d55307 396 *
AnnaBridge 167:e84263d55307 397 * @param obj The serial object
AnnaBridge 167:e84263d55307 398 * @param tx The buffer for sending
AnnaBridge 167:e84263d55307 399 * @param tx_length The number of words to transmit
AnnaBridge 167:e84263d55307 400 * @param tx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 401 * @param handler The serial handler
AnnaBridge 167:e84263d55307 402 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 403 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 404 * @return Returns number of data transfered, or 0 otherwise
AnnaBridge 167:e84263d55307 405 */
AnnaBridge 167:e84263d55307 406 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 407 {
AnnaBridge 167:e84263d55307 408 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 409 (void) hint;
AnnaBridge 167:e84263d55307 410
AnnaBridge 167:e84263d55307 411 // Check buffer is ok
AnnaBridge 167:e84263d55307 412 MBED_ASSERT(tx != (void*)0);
AnnaBridge 167:e84263d55307 413 MBED_ASSERT(tx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 414
AnnaBridge 167:e84263d55307 415 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 416 UART_HandleTypeDef * huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 417
AnnaBridge 167:e84263d55307 418 if (tx_length == 0) {
AnnaBridge 167:e84263d55307 419 return 0;
AnnaBridge 167:e84263d55307 420 }
AnnaBridge 167:e84263d55307 421
AnnaBridge 167:e84263d55307 422 // Set up buffer
AnnaBridge 167:e84263d55307 423 serial_tx_buffer_set(obj, (void *)tx, tx_length, tx_width);
AnnaBridge 167:e84263d55307 424
AnnaBridge 167:e84263d55307 425 // Set up events
AnnaBridge 167:e84263d55307 426 serial_enable_event(obj, SERIAL_EVENT_TX_ALL, 0); // Clear all events
AnnaBridge 167:e84263d55307 427 serial_enable_event(obj, event, 1); // Set only the wanted events
AnnaBridge 167:e84263d55307 428
AnnaBridge 167:e84263d55307 429 // Enable interrupt
AnnaBridge 167:e84263d55307 430 IRQn_Type irq_n = serial_get_irq_n(obj);
AnnaBridge 167:e84263d55307 431 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 432 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 433 NVIC_SetPriority(irq_n, 1);
AnnaBridge 167:e84263d55307 434 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 435 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 436
AnnaBridge 167:e84263d55307 437 // the following function will enable UART_IT_TXE and error interrupts
AnnaBridge 167:e84263d55307 438 if (HAL_UART_Transmit_IT(huart, (uint8_t*)tx, tx_length) != HAL_OK) {
AnnaBridge 167:e84263d55307 439 return 0;
AnnaBridge 167:e84263d55307 440 }
AnnaBridge 167:e84263d55307 441
AnnaBridge 167:e84263d55307 442 return tx_length;
AnnaBridge 167:e84263d55307 443 }
AnnaBridge 167:e84263d55307 444
AnnaBridge 167:e84263d55307 445 /**
AnnaBridge 167:e84263d55307 446 * Begin asynchronous RX transfer (enable interrupt for data collecting)
AnnaBridge 167:e84263d55307 447 * The used buffer is specified in the serial object, rx_buff
AnnaBridge 167:e84263d55307 448 *
AnnaBridge 167:e84263d55307 449 * @param obj The serial object
AnnaBridge 167:e84263d55307 450 * @param rx The buffer for sending
AnnaBridge 167:e84263d55307 451 * @param rx_length The number of words to transmit
AnnaBridge 167:e84263d55307 452 * @param rx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 453 * @param handler The serial handler
AnnaBridge 167:e84263d55307 454 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 455 * @param handler The serial handler
AnnaBridge 167:e84263d55307 456 * @param char_match A character in range 0-254 to be matched
AnnaBridge 167:e84263d55307 457 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 458 */
AnnaBridge 167:e84263d55307 459 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 460 {
AnnaBridge 167:e84263d55307 461 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 462 (void) hint;
AnnaBridge 167:e84263d55307 463
AnnaBridge 167:e84263d55307 464 /* Sanity check arguments */
AnnaBridge 167:e84263d55307 465 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 466 MBED_ASSERT(rx != (void*)0);
AnnaBridge 167:e84263d55307 467 MBED_ASSERT(rx_width == 8); // support only 8b width
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 serial_enable_event(obj, SERIAL_EVENT_RX_ALL, 0);
AnnaBridge 167:e84263d55307 473 serial_enable_event(obj, event, 1);
AnnaBridge 167:e84263d55307 474
AnnaBridge 167:e84263d55307 475 // set CharMatch
AnnaBridge 167:e84263d55307 476 obj->char_match = char_match;
AnnaBridge 167:e84263d55307 477
AnnaBridge 167:e84263d55307 478 serial_rx_buffer_set(obj, rx, rx_length, rx_width);
AnnaBridge 167:e84263d55307 479
AnnaBridge 167:e84263d55307 480 IRQn_Type irq_n = serial_get_irq_n(obj);
AnnaBridge 167:e84263d55307 481 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 482 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 483 NVIC_SetPriority(irq_n, 0);
AnnaBridge 167:e84263d55307 484 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 485 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 486
AnnaBridge 167:e84263d55307 487 // following HAL function will enable the RXNE interrupt + error interrupts
AnnaBridge 167:e84263d55307 488 HAL_UART_Receive_IT(huart, (uint8_t*)rx, rx_length);
AnnaBridge 167:e84263d55307 489 }
AnnaBridge 167:e84263d55307 490
AnnaBridge 167:e84263d55307 491 /**
AnnaBridge 167:e84263d55307 492 * Attempts to determine if the serial peripheral is already in use for TX
AnnaBridge 167:e84263d55307 493 *
AnnaBridge 167:e84263d55307 494 * @param obj The serial object
AnnaBridge 167:e84263d55307 495 * @return Non-zero if the TX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 496 */
AnnaBridge 167:e84263d55307 497 uint8_t serial_tx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 498 {
AnnaBridge 167:e84263d55307 499 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 500
AnnaBridge 167:e84263d55307 501 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 502 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 503
AnnaBridge 167:e84263d55307 504 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_TX) ? 1 : 0);
AnnaBridge 167:e84263d55307 505 }
AnnaBridge 167:e84263d55307 506
AnnaBridge 167:e84263d55307 507 /**
AnnaBridge 167:e84263d55307 508 * Attempts to determine if the serial peripheral is already in use for RX
AnnaBridge 167:e84263d55307 509 *
AnnaBridge 167:e84263d55307 510 * @param obj The serial object
AnnaBridge 167:e84263d55307 511 * @return Non-zero if the RX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 512 */
AnnaBridge 167:e84263d55307 513 uint8_t serial_rx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 514 {
AnnaBridge 167:e84263d55307 515 MBED_ASSERT(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 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_RX) ? 1 : 0);
AnnaBridge 167:e84263d55307 521 }
AnnaBridge 167:e84263d55307 522
AnnaBridge 167:e84263d55307 523 void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 524 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 525 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
AnnaBridge 167:e84263d55307 526 }
AnnaBridge 167:e84263d55307 527 }
AnnaBridge 167:e84263d55307 528
AnnaBridge 167:e84263d55307 529 void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 530 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 167:e84263d55307 531 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_PEF);
AnnaBridge 167:e84263d55307 532 }
AnnaBridge 167:e84263d55307 533 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
AnnaBridge 167:e84263d55307 534 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_FEF);
AnnaBridge 167:e84263d55307 535 }
AnnaBridge 167:e84263d55307 536 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) {
AnnaBridge 167:e84263d55307 537 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_NEF);
AnnaBridge 167:e84263d55307 538 }
AnnaBridge 167:e84263d55307 539 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 167:e84263d55307 540 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
AnnaBridge 167:e84263d55307 541 }
AnnaBridge 167:e84263d55307 542 }
AnnaBridge 167:e84263d55307 543
AnnaBridge 167:e84263d55307 544 /**
AnnaBridge 167:e84263d55307 545 * The asynchronous TX and RX handler.
AnnaBridge 167:e84263d55307 546 *
AnnaBridge 167:e84263d55307 547 * @param obj The serial object
AnnaBridge 167:e84263d55307 548 * @return Returns event flags if a TX/RX transfer termination condition was met or 0 otherwise
AnnaBridge 167:e84263d55307 549 */
AnnaBridge 167:e84263d55307 550 int serial_irq_handler_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 551 {
AnnaBridge 167:e84263d55307 552 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 553 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 554
AnnaBridge 167:e84263d55307 555 volatile int return_event = 0;
AnnaBridge 167:e84263d55307 556 uint8_t *buf = (uint8_t*)(obj->rx_buff.buffer);
AnnaBridge 167:e84263d55307 557 uint8_t i = 0;
AnnaBridge 167:e84263d55307 558
AnnaBridge 167:e84263d55307 559 // TX PART:
AnnaBridge 167:e84263d55307 560 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 561 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
AnnaBridge 167:e84263d55307 562 // Return event SERIAL_EVENT_TX_COMPLETE if requested
AnnaBridge 167:e84263d55307 563 if ((obj_s->events & SERIAL_EVENT_TX_COMPLETE ) != 0) {
AnnaBridge 167:e84263d55307 564 return_event |= (SERIAL_EVENT_TX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 565 }
AnnaBridge 167:e84263d55307 566 }
AnnaBridge 167:e84263d55307 567 }
AnnaBridge 167:e84263d55307 568
AnnaBridge 167:e84263d55307 569 // Handle error events
AnnaBridge 167:e84263d55307 570 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
Kojto 169:e3b6fe271b81 571 if (__HAL_UART_GET_IT(huart, UART_IT_PE) != RESET) {
AnnaBridge 167:e84263d55307 572 return_event |= (SERIAL_EVENT_RX_PARITY_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 573 }
AnnaBridge 167:e84263d55307 574 }
AnnaBridge 167:e84263d55307 575
AnnaBridge 167:e84263d55307 576 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
Kojto 169:e3b6fe271b81 577 if (__HAL_UART_GET_IT(huart, UART_IT_FE) != RESET) {
AnnaBridge 167:e84263d55307 578 return_event |= (SERIAL_EVENT_RX_FRAMING_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 579 }
AnnaBridge 167:e84263d55307 580 }
AnnaBridge 167:e84263d55307 581
AnnaBridge 167:e84263d55307 582 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
Kojto 169:e3b6fe271b81 583 if (__HAL_UART_GET_IT(huart, UART_IT_ORE) != RESET) {
AnnaBridge 167:e84263d55307 584 return_event |= (SERIAL_EVENT_RX_OVERRUN_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 585 }
AnnaBridge 167:e84263d55307 586 }
AnnaBridge 167:e84263d55307 587
AnnaBridge 167:e84263d55307 588 HAL_UART_IRQHandler(huart);
AnnaBridge 167:e84263d55307 589
AnnaBridge 167:e84263d55307 590 // Abort if an error occurs
AnnaBridge 177:d650f5d4c87a 591 if ((return_event & SERIAL_EVENT_RX_PARITY_ERROR) ||
AnnaBridge 177:d650f5d4c87a 592 (return_event & SERIAL_EVENT_RX_FRAMING_ERROR) ||
AnnaBridge 177:d650f5d4c87a 593 (return_event & SERIAL_EVENT_RX_OVERRUN_ERROR)) {
AnnaBridge 167:e84263d55307 594 return return_event;
AnnaBridge 167:e84263d55307 595 }
AnnaBridge 167:e84263d55307 596
AnnaBridge 167:e84263d55307 597 //RX PART
AnnaBridge 167:e84263d55307 598 if (huart->RxXferSize != 0) {
AnnaBridge 167:e84263d55307 599 obj->rx_buff.pos = huart->RxXferSize - huart->RxXferCount;
AnnaBridge 167:e84263d55307 600 }
AnnaBridge 167:e84263d55307 601 if ((huart->RxXferCount == 0) && (obj->rx_buff.pos >= (obj->rx_buff.length - 1))) {
AnnaBridge 167:e84263d55307 602 return_event |= (SERIAL_EVENT_RX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 603 }
AnnaBridge 167:e84263d55307 604
AnnaBridge 167:e84263d55307 605 // Check if char_match is present
AnnaBridge 167:e84263d55307 606 if (obj_s->events & SERIAL_EVENT_RX_CHARACTER_MATCH) {
AnnaBridge 167:e84263d55307 607 if (buf != NULL) {
AnnaBridge 167:e84263d55307 608 for (i = 0; i < obj->rx_buff.pos; i++) {
AnnaBridge 167:e84263d55307 609 if (buf[i] == obj->char_match) {
AnnaBridge 167:e84263d55307 610 obj->rx_buff.pos = i;
AnnaBridge 167:e84263d55307 611 return_event |= (SERIAL_EVENT_RX_CHARACTER_MATCH & obj_s->events);
AnnaBridge 167:e84263d55307 612 serial_rx_abort_asynch(obj);
AnnaBridge 167:e84263d55307 613 break;
AnnaBridge 167:e84263d55307 614 }
AnnaBridge 167:e84263d55307 615 }
AnnaBridge 167:e84263d55307 616 }
AnnaBridge 167:e84263d55307 617 }
AnnaBridge 167:e84263d55307 618
AnnaBridge 167:e84263d55307 619 return return_event;
AnnaBridge 167:e84263d55307 620 }
AnnaBridge 167:e84263d55307 621
AnnaBridge 167:e84263d55307 622 /**
AnnaBridge 167:e84263d55307 623 * Abort the ongoing TX transaction. It disables the enabled interupt for TX and
AnnaBridge 167:e84263d55307 624 * flush TX hardware buffer if TX FIFO is used
AnnaBridge 167:e84263d55307 625 *
AnnaBridge 167:e84263d55307 626 * @param obj The serial object
AnnaBridge 167:e84263d55307 627 */
AnnaBridge 167:e84263d55307 628 void serial_tx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 629 {
AnnaBridge 167:e84263d55307 630 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 631 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 632
AnnaBridge 167:e84263d55307 633 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
AnnaBridge 167:e84263d55307 634 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 635
AnnaBridge 167:e84263d55307 636 // clear flags
AnnaBridge 167:e84263d55307 637 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
AnnaBridge 167:e84263d55307 638
AnnaBridge 167:e84263d55307 639 // reset states
AnnaBridge 167:e84263d55307 640 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 641 // update handle state
AnnaBridge 167:e84263d55307 642 if(huart->gState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 643 huart->gState = HAL_UART_STATE_BUSY_RX;
AnnaBridge 167:e84263d55307 644 } else {
AnnaBridge 167:e84263d55307 645 huart->gState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 646 }
AnnaBridge 167:e84263d55307 647 }
AnnaBridge 167:e84263d55307 648
AnnaBridge 167:e84263d55307 649 /**
AnnaBridge 167:e84263d55307 650 * Abort the ongoing RX transaction It disables the enabled interrupt for RX and
AnnaBridge 167:e84263d55307 651 * flush RX hardware buffer if RX FIFO is used
AnnaBridge 167:e84263d55307 652 *
AnnaBridge 167:e84263d55307 653 * @param obj The serial object
AnnaBridge 167:e84263d55307 654 */
AnnaBridge 167:e84263d55307 655 void serial_rx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 656 {
AnnaBridge 167:e84263d55307 657 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 658 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 659
AnnaBridge 167:e84263d55307 660 // disable interrupts
AnnaBridge 167:e84263d55307 661 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 662 __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
AnnaBridge 167:e84263d55307 663 __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
AnnaBridge 167:e84263d55307 664
AnnaBridge 167:e84263d55307 665 // clear flags
AnnaBridge 167:e84263d55307 666 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_PEF | UART_CLEAR_FEF | UART_CLEAR_OREF);
AnnaBridge 177:d650f5d4c87a 667 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->RDR; // Clear RXNE flag
AnnaBridge 167:e84263d55307 668
AnnaBridge 167:e84263d55307 669 // reset states
AnnaBridge 167:e84263d55307 670 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 671 // update handle state
AnnaBridge 167:e84263d55307 672 if(huart->RxState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 673 huart->RxState = HAL_UART_STATE_BUSY_TX;
AnnaBridge 167:e84263d55307 674 } else {
AnnaBridge 167:e84263d55307 675 huart->RxState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 676 }
AnnaBridge 167:e84263d55307 677 }
AnnaBridge 167:e84263d55307 678
Anna Bridge 180:96ed750bd169 679 #endif /* DEVICE_SERIAL_ASYNCH */
AnnaBridge 167:e84263d55307 680
AnnaBridge 167:e84263d55307 681 #if DEVICE_SERIAL_FC
AnnaBridge 167:e84263d55307 682
AnnaBridge 167:e84263d55307 683 /**
AnnaBridge 167:e84263d55307 684 * Set HW Control Flow
AnnaBridge 167:e84263d55307 685 * @param obj The serial object
AnnaBridge 167:e84263d55307 686 * @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS)
AnnaBridge 167:e84263d55307 687 * @param rxflow Pin for the rxflow
AnnaBridge 167:e84263d55307 688 * @param txflow Pin for the txflow
AnnaBridge 167:e84263d55307 689 */
AnnaBridge 167:e84263d55307 690 void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow)
AnnaBridge 167:e84263d55307 691 {
AnnaBridge 167:e84263d55307 692 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 693
AnnaBridge 167:e84263d55307 694 // Determine the UART to use (UART_1, UART_2, ...)
AnnaBridge 167:e84263d55307 695 UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 696 UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 697
AnnaBridge 167:e84263d55307 698 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
AnnaBridge 167:e84263d55307 699 obj_s->uart = (UARTName)pinmap_merge(uart_cts, uart_rts);
AnnaBridge 167:e84263d55307 700 MBED_ASSERT(obj_s->uart != (UARTName)NC);
AnnaBridge 167:e84263d55307 701
AnnaBridge 167:e84263d55307 702 if(type == FlowControlNone) {
AnnaBridge 167:e84263d55307 703 // Disable hardware flow control
AnnaBridge 167:e84263d55307 704 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
AnnaBridge 167:e84263d55307 705 }
AnnaBridge 167:e84263d55307 706 if (type == FlowControlRTS) {
AnnaBridge 167:e84263d55307 707 // Enable RTS
AnnaBridge 167:e84263d55307 708 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 709 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS;
AnnaBridge 167:e84263d55307 710 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 711 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 712 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 713 }
AnnaBridge 167:e84263d55307 714 if (type == FlowControlCTS) {
AnnaBridge 167:e84263d55307 715 // Enable CTS
AnnaBridge 167:e84263d55307 716 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 717 obj_s->hw_flow_ctl = UART_HWCONTROL_CTS;
AnnaBridge 167:e84263d55307 718 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 719 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 720 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 721 }
AnnaBridge 167:e84263d55307 722 if (type == FlowControlRTSCTS) {
AnnaBridge 167:e84263d55307 723 // Enable CTS & RTS
AnnaBridge 167:e84263d55307 724 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 725 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 726 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS_CTS;
AnnaBridge 167:e84263d55307 727 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 728 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 729 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 730 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 731 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 732 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 733 }
AnnaBridge 167:e84263d55307 734
AnnaBridge 167:e84263d55307 735 init_uart(obj);
AnnaBridge 167:e84263d55307 736 }
AnnaBridge 167:e84263d55307 737
Anna Bridge 180:96ed750bd169 738 #endif /* DEVICE_SERIAL_FC */
AnnaBridge 167:e84263d55307 739
Anna Bridge 180:96ed750bd169 740 #endif /* DEVICE_SERIAL */