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_STM32L0/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
Anna Bridge 180:96ed750bd169 35 #if defined (TARGET_STM32L011K4) || defined (TARGET_STM32L031K6)
Anna Bridge 180:96ed750bd169 36 #define UART_NUM (2)
Anna Bridge 180:96ed750bd169 37 #elif defined (TARGET_STM32L053x8)
Anna Bridge 180:96ed750bd169 38 #define UART_NUM (3)
Anna Bridge 180:96ed750bd169 39 #else
Anna Bridge 180:96ed750bd169 40 #define UART_NUM (5)
Anna Bridge 180:96ed750bd169 41 #endif
AnnaBridge 167:e84263d55307 42
Anna Bridge 180:96ed750bd169 43 uint32_t serial_irq_ids[UART_NUM] = {0};
AnnaBridge 167:e84263d55307 44 UART_HandleTypeDef uart_handlers[UART_NUM];
AnnaBridge 167:e84263d55307 45
AnnaBridge 167:e84263d55307 46 static uart_irq_handler irq_handler;
AnnaBridge 167:e84263d55307 47
AnnaBridge 181:57724642e740 48 // Defined in serial_api.c
Anna Bridge 186:707f6e361f3e 49 extern int8_t get_uart_index(UARTName uart_name);
AnnaBridge 181:57724642e740 50
AnnaBridge 167:e84263d55307 51 /******************************************************************************
AnnaBridge 167:e84263d55307 52 * INTERRUPTS HANDLING
AnnaBridge 167:e84263d55307 53 ******************************************************************************/
AnnaBridge 167:e84263d55307 54
AnnaBridge 181:57724642e740 55 static void uart_irq(UARTName uart_name)
AnnaBridge 167:e84263d55307 56 {
AnnaBridge 181:57724642e740 57 int8_t id = get_uart_index(uart_name);
AnnaBridge 181:57724642e740 58
AnnaBridge 181:57724642e740 59 if (id >= 0) {
AnnaBridge 181:57724642e740 60 UART_HandleTypeDef * huart = &uart_handlers[id];
AnnaBridge 181:57724642e740 61 if (serial_irq_ids[id] != 0) {
AnnaBridge 181:57724642e740 62 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TXE) != RESET) {
AnnaBridge 181:57724642e740 63 if (__HAL_UART_GET_IT(huart, UART_IT_TXE) != RESET) {
AnnaBridge 181:57724642e740 64 irq_handler(serial_irq_ids[id], TxIrq);
AnnaBridge 181:57724642e740 65 }
AnnaBridge 167:e84263d55307 66 }
AnnaBridge 181:57724642e740 67 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) {
AnnaBridge 181:57724642e740 68 if (__HAL_UART_GET_IT(huart, UART_IT_RXNE) != RESET) {
AnnaBridge 181:57724642e740 69 irq_handler(serial_irq_ids[id], RxIrq);
AnnaBridge 181:57724642e740 70 /* Flag has been cleared when reading the content */
AnnaBridge 181:57724642e740 71 }
AnnaBridge 167:e84263d55307 72 }
AnnaBridge 181:57724642e740 73 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 181:57724642e740 74 if (__HAL_UART_GET_IT(huart, UART_IT_ORE) != RESET) {
AnnaBridge 181:57724642e740 75 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
AnnaBridge 181:57724642e740 76 }
AnnaBridge 167:e84263d55307 77 }
AnnaBridge 167:e84263d55307 78 }
AnnaBridge 167:e84263d55307 79 }
AnnaBridge 167:e84263d55307 80 }
AnnaBridge 167:e84263d55307 81
AnnaBridge 167:e84263d55307 82 #if defined(USART1_BASE)
AnnaBridge 167:e84263d55307 83 static void uart1_irq(void)
AnnaBridge 167:e84263d55307 84 {
AnnaBridge 181:57724642e740 85 uart_irq(UART_1);
AnnaBridge 167:e84263d55307 86 }
AnnaBridge 167:e84263d55307 87 #endif
AnnaBridge 167:e84263d55307 88
AnnaBridge 181:57724642e740 89 #if defined(USART2_BASE)
AnnaBridge 167:e84263d55307 90 static void uart2_irq(void)
AnnaBridge 167:e84263d55307 91 {
AnnaBridge 181:57724642e740 92 uart_irq(UART_2);
AnnaBridge 167:e84263d55307 93 }
AnnaBridge 181:57724642e740 94 #endif
AnnaBridge 167:e84263d55307 95
AnnaBridge 167:e84263d55307 96 #if defined(USART4_BASE)
AnnaBridge 167:e84263d55307 97 static void uart4_irq(void)
AnnaBridge 167:e84263d55307 98 {
AnnaBridge 181:57724642e740 99 uart_irq(UART_4);
AnnaBridge 167:e84263d55307 100 }
AnnaBridge 167:e84263d55307 101 #endif
AnnaBridge 167:e84263d55307 102
AnnaBridge 167:e84263d55307 103 #if defined(USART5_BASE)
AnnaBridge 167:e84263d55307 104 static void uart5_irq(void)
AnnaBridge 167:e84263d55307 105 {
AnnaBridge 181:57724642e740 106 uart_irq(UART_5);
AnnaBridge 181:57724642e740 107 }
AnnaBridge 181:57724642e740 108 #endif
AnnaBridge 181:57724642e740 109
AnnaBridge 181:57724642e740 110 #if defined(LPUART1_BASE)
AnnaBridge 181:57724642e740 111 static void lpuart1_irq(void)
AnnaBridge 181:57724642e740 112 {
AnnaBridge 181:57724642e740 113 uart_irq(LPUART_1);
AnnaBridge 167:e84263d55307 114 }
AnnaBridge 167:e84263d55307 115 #endif
AnnaBridge 167:e84263d55307 116
AnnaBridge 167:e84263d55307 117 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
AnnaBridge 167:e84263d55307 118 {
AnnaBridge 167:e84263d55307 119 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 120
AnnaBridge 167:e84263d55307 121 irq_handler = handler;
AnnaBridge 167:e84263d55307 122 serial_irq_ids[obj_s->index] = id;
AnnaBridge 167:e84263d55307 123 }
AnnaBridge 167:e84263d55307 124
AnnaBridge 167:e84263d55307 125 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
AnnaBridge 167:e84263d55307 126 {
AnnaBridge 167:e84263d55307 127 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 128 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 129 IRQn_Type irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 130 uint32_t vector = 0;
AnnaBridge 167:e84263d55307 131
AnnaBridge 167:e84263d55307 132 #if defined(USART1_BASE)
AnnaBridge 167:e84263d55307 133 if (obj_s->uart == UART_1) {
AnnaBridge 167:e84263d55307 134 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 135 vector = (uint32_t)&uart1_irq;
AnnaBridge 167:e84263d55307 136 }
AnnaBridge 167:e84263d55307 137 #endif
AnnaBridge 167:e84263d55307 138
AnnaBridge 181:57724642e740 139 #if defined(USART2_BASE)
AnnaBridge 167:e84263d55307 140 if (obj_s->uart == UART_2) {
AnnaBridge 167:e84263d55307 141 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 142 vector = (uint32_t)&uart2_irq;
AnnaBridge 167:e84263d55307 143 }
AnnaBridge 181:57724642e740 144 #endif
AnnaBridge 167:e84263d55307 145
AnnaBridge 167:e84263d55307 146 #if defined(USART4_BASE)
AnnaBridge 167:e84263d55307 147 if (obj_s->uart == UART_4) {
AnnaBridge 167:e84263d55307 148 irq_n = USART4_5_IRQn;
AnnaBridge 167:e84263d55307 149 vector = (uint32_t)&uart4_irq;
AnnaBridge 167:e84263d55307 150 }
AnnaBridge 167:e84263d55307 151 #endif
AnnaBridge 167:e84263d55307 152
AnnaBridge 167:e84263d55307 153 #if defined(USART5_BASE)
AnnaBridge 167:e84263d55307 154 if (obj_s->uart == UART_5) {
AnnaBridge 167:e84263d55307 155 irq_n = USART4_5_IRQn;
AnnaBridge 167:e84263d55307 156 vector = (uint32_t)&uart5_irq;
AnnaBridge 167:e84263d55307 157 }
AnnaBridge 167:e84263d55307 158 #endif
AnnaBridge 167:e84263d55307 159
AnnaBridge 181:57724642e740 160 #if defined(LPUART1_BASE)
AnnaBridge 181:57724642e740 161 if (obj_s->uart == LPUART_1) {
AnnaBridge 181:57724642e740 162 irq_n = RNG_LPUART1_IRQn;
AnnaBridge 181:57724642e740 163 vector = (uint32_t)&lpuart1_irq;
AnnaBridge 181:57724642e740 164 }
AnnaBridge 181:57724642e740 165 #endif
AnnaBridge 181:57724642e740 166
AnnaBridge 167:e84263d55307 167 if (enable) {
AnnaBridge 167:e84263d55307 168 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 169 __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 170 } else { // TxIrq
Kojto 170:19eb464bc2be 171 __HAL_UART_ENABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 172 }
AnnaBridge 167:e84263d55307 173 NVIC_SetVector(irq_n, vector);
AnnaBridge 167:e84263d55307 174 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 175
AnnaBridge 167:e84263d55307 176 } else { // disable
AnnaBridge 167:e84263d55307 177 int all_disabled = 0;
AnnaBridge 167:e84263d55307 178 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 179 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 180 // Check if TxIrq is disabled too
AnnaBridge 167:e84263d55307 181 if ((huart->Instance->CR1 & USART_CR1_TXEIE) == 0) {
AnnaBridge 167:e84263d55307 182 all_disabled = 1;
AnnaBridge 167:e84263d55307 183 }
AnnaBridge 167:e84263d55307 184 } else { // TxIrq
Kojto 170:19eb464bc2be 185 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 186 // Check if RxIrq is disabled too
AnnaBridge 167:e84263d55307 187 if ((huart->Instance->CR1 & USART_CR1_RXNEIE) == 0) {
AnnaBridge 167:e84263d55307 188 all_disabled = 1;
AnnaBridge 167:e84263d55307 189 }
AnnaBridge 167:e84263d55307 190 }
AnnaBridge 167:e84263d55307 191
AnnaBridge 167:e84263d55307 192 if (all_disabled) {
AnnaBridge 167:e84263d55307 193 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 194 }
AnnaBridge 167:e84263d55307 195 }
AnnaBridge 167:e84263d55307 196 }
AnnaBridge 167:e84263d55307 197
AnnaBridge 167:e84263d55307 198 /******************************************************************************
AnnaBridge 167:e84263d55307 199 * READ/WRITE
AnnaBridge 167:e84263d55307 200 ******************************************************************************/
AnnaBridge 167:e84263d55307 201
AnnaBridge 167:e84263d55307 202 int serial_getc(serial_t *obj)
AnnaBridge 167:e84263d55307 203 {
AnnaBridge 167:e84263d55307 204 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 205 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 206
AnnaBridge 167:e84263d55307 207 while (!serial_readable(obj));
AnnaBridge 167:e84263d55307 208 return (int)(huart->Instance->RDR & (uint16_t)0xFF);
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 huart->Instance->TDR = (uint32_t)(c & (uint16_t)0xFF);
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_UART_SEND_REQ(huart, UART_SENDBREAK_REQUEST);
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 167:e84263d55307 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 167:e84263d55307 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 167:e84263d55307 326 #if defined(USART4_BASE)
AnnaBridge 181:57724642e740 327 case UART_4:
AnnaBridge 167:e84263d55307 328 irq_n = USART4_5_IRQn;
AnnaBridge 167:e84263d55307 329 break;
AnnaBridge 167:e84263d55307 330 #endif
AnnaBridge 167:e84263d55307 331 #if defined(USART5_BASE)
AnnaBridge 181:57724642e740 332 case UART_5:
AnnaBridge 167:e84263d55307 333 irq_n = USART4_5_IRQn;
AnnaBridge 167:e84263d55307 334 break;
AnnaBridge 167:e84263d55307 335 #endif
AnnaBridge 181:57724642e740 336 #if defined(LPUART1_BASE)
AnnaBridge 181:57724642e740 337 case LPUART_1:
AnnaBridge 181:57724642e740 338 irq_n = RNG_LPUART1_IRQn;
AnnaBridge 181:57724642e740 339 break;
AnnaBridge 181:57724642e740 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 /******************************************************************************
AnnaBridge 167:e84263d55307 350 * MBED API FUNCTIONS
AnnaBridge 167:e84263d55307 351 ******************************************************************************/
AnnaBridge 167:e84263d55307 352
AnnaBridge 167:e84263d55307 353 /**
AnnaBridge 167:e84263d55307 354 * Begin asynchronous TX transfer. The used buffer is specified in the serial
AnnaBridge 167:e84263d55307 355 * object, tx_buff
AnnaBridge 167:e84263d55307 356 *
AnnaBridge 167:e84263d55307 357 * @param obj The serial object
AnnaBridge 167:e84263d55307 358 * @param tx The buffer for sending
AnnaBridge 167:e84263d55307 359 * @param tx_length The number of words to transmit
AnnaBridge 167:e84263d55307 360 * @param tx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 361 * @param handler The serial handler
AnnaBridge 167:e84263d55307 362 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 363 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 364 * @return Returns number of data transfered, or 0 otherwise
AnnaBridge 167:e84263d55307 365 */
AnnaBridge 167:e84263d55307 366 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 367 {
AnnaBridge 167:e84263d55307 368 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 369 (void) hint;
AnnaBridge 167:e84263d55307 370
AnnaBridge 167:e84263d55307 371 // Check buffer is ok
AnnaBridge 167:e84263d55307 372 MBED_ASSERT(tx != (void*)0);
AnnaBridge 167:e84263d55307 373 MBED_ASSERT(tx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 374
AnnaBridge 167:e84263d55307 375 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 376 UART_HandleTypeDef * huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 377
AnnaBridge 167:e84263d55307 378 if (tx_length == 0) {
AnnaBridge 167:e84263d55307 379 return 0;
AnnaBridge 167:e84263d55307 380 }
AnnaBridge 167:e84263d55307 381
AnnaBridge 167:e84263d55307 382 // Set up buffer
AnnaBridge 167:e84263d55307 383 serial_tx_buffer_set(obj, (void *)tx, tx_length, tx_width);
AnnaBridge 167:e84263d55307 384
AnnaBridge 167:e84263d55307 385 // Set up events
AnnaBridge 167:e84263d55307 386 serial_enable_event(obj, SERIAL_EVENT_TX_ALL, 0); // Clear all events
AnnaBridge 167:e84263d55307 387 serial_enable_event(obj, event, 1); // Set only the wanted events
AnnaBridge 167:e84263d55307 388
AnnaBridge 167:e84263d55307 389 // Enable interrupt
AnnaBridge 181:57724642e740 390 IRQn_Type irq_n = serial_get_irq_n(obj_s->uart);
AnnaBridge 167:e84263d55307 391 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 392 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 393 NVIC_SetPriority(irq_n, 1);
AnnaBridge 167:e84263d55307 394 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 395 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 396
AnnaBridge 167:e84263d55307 397 // the following function will enable UART_IT_TXE and error interrupts
AnnaBridge 167:e84263d55307 398 if (HAL_UART_Transmit_IT(huart, (uint8_t*)tx, tx_length) != HAL_OK) {
AnnaBridge 167:e84263d55307 399 return 0;
AnnaBridge 167:e84263d55307 400 }
AnnaBridge 167:e84263d55307 401
AnnaBridge 167:e84263d55307 402 return tx_length;
AnnaBridge 167:e84263d55307 403 }
AnnaBridge 167:e84263d55307 404
AnnaBridge 167:e84263d55307 405 /**
AnnaBridge 167:e84263d55307 406 * Begin asynchronous RX transfer (enable interrupt for data collecting)
AnnaBridge 167:e84263d55307 407 * The used buffer is specified in the serial object, rx_buff
AnnaBridge 167:e84263d55307 408 *
AnnaBridge 167:e84263d55307 409 * @param obj The serial object
AnnaBridge 167:e84263d55307 410 * @param rx The buffer for sending
AnnaBridge 167:e84263d55307 411 * @param rx_length The number of words to transmit
AnnaBridge 167:e84263d55307 412 * @param rx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 413 * @param handler The serial handler
AnnaBridge 167:e84263d55307 414 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 415 * @param handler The serial handler
AnnaBridge 167:e84263d55307 416 * @param char_match A character in range 0-254 to be matched
AnnaBridge 167:e84263d55307 417 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 418 */
AnnaBridge 167:e84263d55307 419 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 420 {
AnnaBridge 167:e84263d55307 421 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 422 (void) hint;
AnnaBridge 167:e84263d55307 423
AnnaBridge 167:e84263d55307 424 /* Sanity check arguments */
AnnaBridge 167:e84263d55307 425 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 426 MBED_ASSERT(rx != (void*)0);
AnnaBridge 167:e84263d55307 427 MBED_ASSERT(rx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 428
AnnaBridge 167:e84263d55307 429 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 430 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 431
AnnaBridge 167:e84263d55307 432 serial_enable_event(obj, SERIAL_EVENT_RX_ALL, 0);
AnnaBridge 167:e84263d55307 433 serial_enable_event(obj, event, 1);
AnnaBridge 167:e84263d55307 434
AnnaBridge 167:e84263d55307 435 // set CharMatch
AnnaBridge 167:e84263d55307 436 obj->char_match = char_match;
AnnaBridge 167:e84263d55307 437
AnnaBridge 167:e84263d55307 438 serial_rx_buffer_set(obj, rx, rx_length, rx_width);
AnnaBridge 167:e84263d55307 439
AnnaBridge 181:57724642e740 440 IRQn_Type irq_n = serial_get_irq_n(obj_s->uart);
AnnaBridge 167:e84263d55307 441 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 442 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 443 NVIC_SetPriority(irq_n, 0);
AnnaBridge 167:e84263d55307 444 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 445 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 446
AnnaBridge 167:e84263d55307 447 // following HAL function will enable the RXNE interrupt + error interrupts
AnnaBridge 167:e84263d55307 448 HAL_UART_Receive_IT(huart, (uint8_t*)rx, rx_length);
AnnaBridge 167:e84263d55307 449 }
AnnaBridge 167:e84263d55307 450
AnnaBridge 167:e84263d55307 451 /**
AnnaBridge 167:e84263d55307 452 * Attempts to determine if the serial peripheral is already in use for TX
AnnaBridge 167:e84263d55307 453 *
AnnaBridge 167:e84263d55307 454 * @param obj The serial object
AnnaBridge 167:e84263d55307 455 * @return Non-zero if the TX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 456 */
AnnaBridge 167:e84263d55307 457 uint8_t serial_tx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 458 {
AnnaBridge 167:e84263d55307 459 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 460
AnnaBridge 167:e84263d55307 461 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 462 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 463
AnnaBridge 167:e84263d55307 464 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_TX) ? 1 : 0);
AnnaBridge 167:e84263d55307 465 }
AnnaBridge 167:e84263d55307 466
AnnaBridge 167:e84263d55307 467 /**
AnnaBridge 167:e84263d55307 468 * Attempts to determine if the serial peripheral is already in use for RX
AnnaBridge 167:e84263d55307 469 *
AnnaBridge 167:e84263d55307 470 * @param obj The serial object
AnnaBridge 167:e84263d55307 471 * @return Non-zero if the RX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 472 */
AnnaBridge 167:e84263d55307 473 uint8_t serial_rx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 474 {
AnnaBridge 167:e84263d55307 475 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 476
AnnaBridge 167:e84263d55307 477 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 478 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 479
AnnaBridge 167:e84263d55307 480 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_RX) ? 1 : 0);
AnnaBridge 167:e84263d55307 481 }
AnnaBridge 167:e84263d55307 482
AnnaBridge 167:e84263d55307 483 void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 484 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 485 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
AnnaBridge 167:e84263d55307 486 }
AnnaBridge 167:e84263d55307 487 }
AnnaBridge 167:e84263d55307 488
AnnaBridge 167:e84263d55307 489 /**
AnnaBridge 167:e84263d55307 490 * The asynchronous TX and RX handler.
AnnaBridge 167:e84263d55307 491 *
AnnaBridge 167:e84263d55307 492 * @param obj The serial object
AnnaBridge 167:e84263d55307 493 * @return Returns event flags if a TX/RX transfer termination condition was met or 0 otherwise
AnnaBridge 167:e84263d55307 494 */
AnnaBridge 167:e84263d55307 495 int serial_irq_handler_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 496 {
AnnaBridge 167:e84263d55307 497 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 498 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 499
AnnaBridge 167:e84263d55307 500 volatile int return_event = 0;
AnnaBridge 167:e84263d55307 501 uint8_t *buf = (uint8_t*)(obj->rx_buff.buffer);
AnnaBridge 167:e84263d55307 502 uint8_t i = 0;
AnnaBridge 167:e84263d55307 503
AnnaBridge 167:e84263d55307 504 // TX PART:
AnnaBridge 167:e84263d55307 505 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 506 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
AnnaBridge 167:e84263d55307 507 // Return event SERIAL_EVENT_TX_COMPLETE if requested
AnnaBridge 167:e84263d55307 508 if ((obj_s->events & SERIAL_EVENT_TX_COMPLETE ) != 0) {
AnnaBridge 167:e84263d55307 509 return_event |= (SERIAL_EVENT_TX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 510 }
AnnaBridge 167:e84263d55307 511 }
AnnaBridge 167:e84263d55307 512 }
AnnaBridge 167:e84263d55307 513
AnnaBridge 167:e84263d55307 514 // Handle error events
AnnaBridge 167:e84263d55307 515 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 167:e84263d55307 516 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_PEF);
Kojto 169:e3b6fe271b81 517 if (__HAL_UART_GET_IT(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 518 return_event |= (SERIAL_EVENT_RX_PARITY_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 519 }
AnnaBridge 167:e84263d55307 520 }
AnnaBridge 167:e84263d55307 521
AnnaBridge 167:e84263d55307 522 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
Kojto 169:e3b6fe271b81 523 if (__HAL_UART_GET_IT(huart, UART_IT_FE) != RESET) {
AnnaBridge 167:e84263d55307 524 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_FEF);
AnnaBridge 167:e84263d55307 525 return_event |= (SERIAL_EVENT_RX_FRAMING_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 526 }
AnnaBridge 167:e84263d55307 527 }
AnnaBridge 167:e84263d55307 528
AnnaBridge 167:e84263d55307 529 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) {
Kojto 169:e3b6fe271b81 530 if (__HAL_UART_GET_IT(huart, UART_IT_NE) != RESET) {
AnnaBridge 167:e84263d55307 531 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_NEF);
AnnaBridge 167:e84263d55307 532 }
AnnaBridge 167:e84263d55307 533 }
AnnaBridge 167:e84263d55307 534
AnnaBridge 167:e84263d55307 535 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
Kojto 169:e3b6fe271b81 536 if (__HAL_UART_GET_IT(huart, UART_IT_ORE) != RESET) {
AnnaBridge 167:e84263d55307 537 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
AnnaBridge 167:e84263d55307 538 return_event |= (SERIAL_EVENT_RX_OVERRUN_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 539 }
AnnaBridge 167:e84263d55307 540 }
AnnaBridge 167:e84263d55307 541
AnnaBridge 167:e84263d55307 542 HAL_UART_IRQHandler(huart);
AnnaBridge 167:e84263d55307 543
AnnaBridge 167:e84263d55307 544 // Abort if an error occurs
AnnaBridge 177:d650f5d4c87a 545 if ((return_event & SERIAL_EVENT_RX_PARITY_ERROR) ||
AnnaBridge 177:d650f5d4c87a 546 (return_event & SERIAL_EVENT_RX_FRAMING_ERROR) ||
AnnaBridge 177:d650f5d4c87a 547 (return_event & SERIAL_EVENT_RX_OVERRUN_ERROR)) {
AnnaBridge 167:e84263d55307 548 return return_event;
AnnaBridge 167:e84263d55307 549 }
AnnaBridge 167:e84263d55307 550
AnnaBridge 167:e84263d55307 551 //RX PART
AnnaBridge 167:e84263d55307 552 if (huart->RxXferSize != 0) {
AnnaBridge 167:e84263d55307 553 obj->rx_buff.pos = huart->RxXferSize - huart->RxXferCount;
AnnaBridge 167:e84263d55307 554 }
AnnaBridge 167:e84263d55307 555 if ((huart->RxXferCount == 0) && (obj->rx_buff.pos >= (obj->rx_buff.length - 1))) {
AnnaBridge 167:e84263d55307 556 return_event |= (SERIAL_EVENT_RX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 557 }
AnnaBridge 167:e84263d55307 558
AnnaBridge 167:e84263d55307 559 // Check if char_match is present
AnnaBridge 167:e84263d55307 560 if (obj_s->events & SERIAL_EVENT_RX_CHARACTER_MATCH) {
AnnaBridge 167:e84263d55307 561 if (buf != NULL) {
AnnaBridge 167:e84263d55307 562 for (i = 0; i < obj->rx_buff.pos; i++) {
AnnaBridge 167:e84263d55307 563 if (buf[i] == obj->char_match) {
AnnaBridge 167:e84263d55307 564 obj->rx_buff.pos = i;
AnnaBridge 167:e84263d55307 565 return_event |= (SERIAL_EVENT_RX_CHARACTER_MATCH & obj_s->events);
AnnaBridge 167:e84263d55307 566 serial_rx_abort_asynch(obj);
AnnaBridge 167:e84263d55307 567 break;
AnnaBridge 167:e84263d55307 568 }
AnnaBridge 167:e84263d55307 569 }
AnnaBridge 167:e84263d55307 570 }
AnnaBridge 167:e84263d55307 571 }
AnnaBridge 167:e84263d55307 572
AnnaBridge 167:e84263d55307 573 return return_event;
AnnaBridge 167:e84263d55307 574 }
AnnaBridge 167:e84263d55307 575
AnnaBridge 167:e84263d55307 576 /**
AnnaBridge 167:e84263d55307 577 * Abort the ongoing TX transaction. It disables the enabled interupt for TX and
AnnaBridge 167:e84263d55307 578 * flush TX hardware buffer if TX FIFO is used
AnnaBridge 167:e84263d55307 579 *
AnnaBridge 167:e84263d55307 580 * @param obj The serial object
AnnaBridge 167:e84263d55307 581 */
AnnaBridge 167:e84263d55307 582 void serial_tx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 583 {
AnnaBridge 167:e84263d55307 584 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 585 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 586
AnnaBridge 167:e84263d55307 587 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
AnnaBridge 167:e84263d55307 588 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 589
AnnaBridge 167:e84263d55307 590 // clear flags
AnnaBridge 167:e84263d55307 591 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
AnnaBridge 167:e84263d55307 592
AnnaBridge 167:e84263d55307 593 // reset states
AnnaBridge 167:e84263d55307 594 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 595 // update handle state
AnnaBridge 167:e84263d55307 596 if(huart->gState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 597 huart->gState = HAL_UART_STATE_BUSY_RX;
AnnaBridge 167:e84263d55307 598 } else {
AnnaBridge 167:e84263d55307 599 huart->gState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 600 }
AnnaBridge 167:e84263d55307 601 }
AnnaBridge 167:e84263d55307 602
AnnaBridge 167:e84263d55307 603 /**
AnnaBridge 167:e84263d55307 604 * Abort the ongoing RX transaction It disables the enabled interrupt for RX and
AnnaBridge 167:e84263d55307 605 * flush RX hardware buffer if RX FIFO is used
AnnaBridge 167:e84263d55307 606 *
AnnaBridge 167:e84263d55307 607 * @param obj The serial object
AnnaBridge 167:e84263d55307 608 */
AnnaBridge 167:e84263d55307 609 void serial_rx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 610 {
AnnaBridge 167:e84263d55307 611 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 612 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 613
AnnaBridge 167:e84263d55307 614 // disable interrupts
AnnaBridge 167:e84263d55307 615 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 616 __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
AnnaBridge 167:e84263d55307 617 __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
AnnaBridge 167:e84263d55307 618
AnnaBridge 167:e84263d55307 619 // clear flags
AnnaBridge 167:e84263d55307 620 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_PEF | UART_CLEAR_FEF | UART_CLEAR_OREF);
AnnaBridge 177:d650f5d4c87a 621 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->RDR; // Clear RXNE flag
AnnaBridge 167:e84263d55307 622
AnnaBridge 167:e84263d55307 623 // reset states
AnnaBridge 167:e84263d55307 624 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 625 // update handle state
AnnaBridge 167:e84263d55307 626 if(huart->RxState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 627 huart->RxState = HAL_UART_STATE_BUSY_TX;
AnnaBridge 167:e84263d55307 628 } else {
AnnaBridge 167:e84263d55307 629 huart->RxState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 630 }
AnnaBridge 167:e84263d55307 631 }
AnnaBridge 167:e84263d55307 632
Anna Bridge 180:96ed750bd169 633 #endif /* DEVICE_SERIAL_ASYNCH */
AnnaBridge 167:e84263d55307 634
AnnaBridge 167:e84263d55307 635 #if DEVICE_SERIAL_FC
AnnaBridge 167:e84263d55307 636
AnnaBridge 167:e84263d55307 637 /**
AnnaBridge 167:e84263d55307 638 * Set HW Control Flow
AnnaBridge 167:e84263d55307 639 * @param obj The serial object
AnnaBridge 167:e84263d55307 640 * @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS)
AnnaBridge 167:e84263d55307 641 * @param rxflow Pin for the rxflow
AnnaBridge 167:e84263d55307 642 * @param txflow Pin for the txflow
AnnaBridge 167:e84263d55307 643 */
AnnaBridge 167:e84263d55307 644 void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow)
AnnaBridge 167:e84263d55307 645 {
AnnaBridge 167:e84263d55307 646 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 647
AnnaBridge 167:e84263d55307 648 // Determine the UART to use (UART_1, UART_2, ...)
AnnaBridge 167:e84263d55307 649 UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 650 UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 651
AnnaBridge 167:e84263d55307 652 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
AnnaBridge 167:e84263d55307 653 obj_s->uart = (UARTName)pinmap_merge(uart_cts, uart_rts);
AnnaBridge 167:e84263d55307 654 MBED_ASSERT(obj_s->uart != (UARTName)NC);
AnnaBridge 167:e84263d55307 655
AnnaBridge 167:e84263d55307 656 if(type == FlowControlNone) {
AnnaBridge 167:e84263d55307 657 // Disable hardware flow control
AnnaBridge 167:e84263d55307 658 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
AnnaBridge 167:e84263d55307 659 }
AnnaBridge 167:e84263d55307 660 if (type == FlowControlRTS) {
AnnaBridge 167:e84263d55307 661 // Enable RTS
AnnaBridge 167:e84263d55307 662 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 663 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS;
AnnaBridge 167:e84263d55307 664 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 665 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 666 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 667 }
AnnaBridge 167:e84263d55307 668 if (type == FlowControlCTS) {
AnnaBridge 167:e84263d55307 669 // Enable CTS
AnnaBridge 167:e84263d55307 670 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 671 obj_s->hw_flow_ctl = UART_HWCONTROL_CTS;
AnnaBridge 167:e84263d55307 672 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 673 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 674 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 675 }
AnnaBridge 167:e84263d55307 676 if (type == FlowControlRTSCTS) {
AnnaBridge 167:e84263d55307 677 // Enable CTS & RTS
AnnaBridge 167:e84263d55307 678 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 679 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 680 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS_CTS;
AnnaBridge 167:e84263d55307 681 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 682 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 683 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 684 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 685 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 686 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 687 }
AnnaBridge 167:e84263d55307 688
AnnaBridge 167:e84263d55307 689 init_uart(obj);
AnnaBridge 167:e84263d55307 690 }
AnnaBridge 167:e84263d55307 691
Anna Bridge 180:96ed750bd169 692 #endif /* DEVICE_SERIAL_FC */
AnnaBridge 167:e84263d55307 693
Anna Bridge 180:96ed750bd169 694 #endif /* DEVICE_SERIAL */