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targets/TARGET_STM/TARGET_STM32F4/serial_device.c@182:57724642e740, 2018-02-16 (annotated)

Committer:
AnnaBridge
Date:
Fri Feb 16 16:09:33 2018 +0000
Revision:
182:57724642e740
Parent:
181:96ed750bd169 
mbed-dev library. Release version 159.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 167:e84263d55307 1 /* mbed Microcontroller Library
AnnaBridge 167:e84263d55307 2 *******************************************************************************
Anna Bridge 181:96ed750bd169 3 * Copyright (c) 2017, STMicroelectronics
AnnaBridge 167:e84263d55307 4 * All rights reserved.
AnnaBridge 167:e84263d55307 5 *
AnnaBridge 167:e84263d55307 6 * Redistribution and use in source and binary forms, with or without
AnnaBridge 167:e84263d55307 7 * modification, are permitted provided that the following conditions are met:
AnnaBridge 167:e84263d55307 8 *
AnnaBridge 167:e84263d55307 9 * 1. Redistributions of source code must retain the above copyright notice,
AnnaBridge 167:e84263d55307 10 * this list of conditions and the following disclaimer.
AnnaBridge 167:e84263d55307 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
AnnaBridge 167:e84263d55307 12 * this list of conditions and the following disclaimer in the documentation
AnnaBridge 167:e84263d55307 13 * and/or other materials provided with the distribution.
AnnaBridge 167:e84263d55307 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
AnnaBridge 167:e84263d55307 15 * may be used to endorse or promote products derived from this software
AnnaBridge 167:e84263d55307 16 * without specific prior written permission.
AnnaBridge 167:e84263d55307 17 *
AnnaBridge 167:e84263d55307 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AnnaBridge 167:e84263d55307 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
AnnaBridge 167:e84263d55307 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
AnnaBridge 167:e84263d55307 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
AnnaBridge 167:e84263d55307 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
AnnaBridge 167:e84263d55307 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
AnnaBridge 167:e84263d55307 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
AnnaBridge 167:e84263d55307 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
AnnaBridge 167:e84263d55307 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
AnnaBridge 167:e84263d55307 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AnnaBridge 167:e84263d55307 28 *******************************************************************************
AnnaBridge 167:e84263d55307 29 */
AnnaBridge 167:e84263d55307 30
AnnaBridge 167:e84263d55307 31 #if DEVICE_SERIAL
AnnaBridge 167:e84263d55307 32
Anna Bridge 181:96ed750bd169 33 #include "serial_api_hal.h"
AnnaBridge 167:e84263d55307 34
Anna Bridge 181:96ed750bd169 35 #if defined (TARGET_STM32F401xC) || defined (TARGET_STM32F401xE) || defined (TARGET_STM32F410xB) || defined (TARGET_STM32F411xE)
Anna Bridge 181:96ed750bd169 36 #define UART_NUM (3)
Anna Bridge 181:96ed750bd169 37 #elif defined (TARGET_STM32F412xG)
Anna Bridge 181:96ed750bd169 38 #define UART_NUM (4)
Anna Bridge 181:96ed750bd169 39 #elif defined (TARGET_STM32F407xG) || defined (TARGET_STM32F446xE)
Anna Bridge 181:96ed750bd169 40 #define UART_NUM (6)
Anna Bridge 181:96ed750bd169 41 #elif defined (TARGET_STM32F429xI) || defined (TARGET_STM32F439xI) || defined (TARGET_STM32F437xG) || defined (TARGET_STM32F469xI)
Anna Bridge 181:96ed750bd169 42 #define UART_NUM (8)
Anna Bridge 181:96ed750bd169 43 #else
Anna Bridge 181:96ed750bd169 44 #define UART_NUM (10) // max value // TARGET_STM32F413xH
Anna Bridge 181:96ed750bd169 45 #endif
Anna Bridge 181:96ed750bd169 46
Anna Bridge 181:96ed750bd169 47 uint32_t serial_irq_ids[UART_NUM] = {0};
AnnaBridge 167:e84263d55307 48 UART_HandleTypeDef uart_handlers[UART_NUM];
AnnaBridge 167:e84263d55307 49
AnnaBridge 167:e84263d55307 50 static uart_irq_handler irq_handler;
AnnaBridge 167:e84263d55307 51
AnnaBridge 182:57724642e740 52 // Defined in serial_api.c
AnnaBridge 182:57724642e740 53 inline int8_t get_uart_index(UARTName uart_name);
AnnaBridge 182:57724642e740 54
AnnaBridge 167:e84263d55307 55 /******************************************************************************
AnnaBridge 167:e84263d55307 56 * INTERRUPTS HANDLING
AnnaBridge 167:e84263d55307 57 ******************************************************************************/
AnnaBridge 167:e84263d55307 58
AnnaBridge 182:57724642e740 59 static void uart_irq(UARTName uart_name)
AnnaBridge 167:e84263d55307 60 {
AnnaBridge 182:57724642e740 61 int8_t id = get_uart_index(uart_name);
AnnaBridge 182:57724642e740 62
AnnaBridge 182:57724642e740 63 if (id >= 0) {
AnnaBridge 182:57724642e740 64 UART_HandleTypeDef * huart = &uart_handlers[id];
AnnaBridge 182:57724642e740 65 if (serial_irq_ids[id] != 0) {
AnnaBridge 182:57724642e740 66 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TXE) != RESET) {
AnnaBridge 182:57724642e740 67 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TXE) != RESET) {
AnnaBridge 182:57724642e740 68 irq_handler(serial_irq_ids[id], TxIrq);
AnnaBridge 182:57724642e740 69 }
AnnaBridge 167:e84263d55307 70 }
AnnaBridge 182:57724642e740 71 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) {
AnnaBridge 182:57724642e740 72 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_RXNE) != RESET) {
AnnaBridge 182:57724642e740 73 irq_handler(serial_irq_ids[id], RxIrq);
AnnaBridge 182:57724642e740 74 /* Flag has been cleared when reading the content */
AnnaBridge 182:57724642e740 75 }
AnnaBridge 167:e84263d55307 76 }
AnnaBridge 182:57724642e740 77 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 182:57724642e740 78 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 182:57724642e740 79 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear ORE flag
AnnaBridge 182:57724642e740 80 }
AnnaBridge 167:e84263d55307 81 }
AnnaBridge 167:e84263d55307 82 }
AnnaBridge 167:e84263d55307 83 }
AnnaBridge 167:e84263d55307 84 }
AnnaBridge 167:e84263d55307 85
AnnaBridge 182:57724642e740 86 #if defined(USART1_BASE)
AnnaBridge 167:e84263d55307 87 static void uart1_irq(void)
AnnaBridge 167:e84263d55307 88 {
AnnaBridge 182:57724642e740 89 uart_irq(UART_1);
AnnaBridge 167:e84263d55307 90 }
AnnaBridge 182:57724642e740 91 #endif
AnnaBridge 167:e84263d55307 92
AnnaBridge 182:57724642e740 93 #if defined(USART2_BASE)
AnnaBridge 167:e84263d55307 94 static void uart2_irq(void)
AnnaBridge 167:e84263d55307 95 {
AnnaBridge 182:57724642e740 96 uart_irq(UART_2);
AnnaBridge 167:e84263d55307 97 }
AnnaBridge 182:57724642e740 98 #endif
AnnaBridge 167:e84263d55307 99
AnnaBridge 167:e84263d55307 100 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 101 static void uart3_irq(void)
AnnaBridge 167:e84263d55307 102 {
AnnaBridge 182:57724642e740 103 uart_irq(UART_3);
AnnaBridge 167:e84263d55307 104 }
AnnaBridge 167:e84263d55307 105 #endif
AnnaBridge 167:e84263d55307 106
AnnaBridge 167:e84263d55307 107 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 108 static void uart4_irq(void)
AnnaBridge 167:e84263d55307 109 {
AnnaBridge 182:57724642e740 110 uart_irq(UART_4);
AnnaBridge 167:e84263d55307 111 }
AnnaBridge 167:e84263d55307 112 #endif
AnnaBridge 167:e84263d55307 113
AnnaBridge 167:e84263d55307 114 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 115 static void uart5_irq(void)
AnnaBridge 167:e84263d55307 116 {
AnnaBridge 182:57724642e740 117 uart_irq(UART_5);
AnnaBridge 167:e84263d55307 118 }
AnnaBridge 167:e84263d55307 119 #endif
AnnaBridge 167:e84263d55307 120
AnnaBridge 167:e84263d55307 121 #if defined(USART6_BASE)
AnnaBridge 167:e84263d55307 122 static void uart6_irq(void)
AnnaBridge 167:e84263d55307 123 {
AnnaBridge 182:57724642e740 124 uart_irq(UART_6);
AnnaBridge 167:e84263d55307 125 }
AnnaBridge 167:e84263d55307 126 #endif
AnnaBridge 167:e84263d55307 127
AnnaBridge 167:e84263d55307 128 #if defined(UART7_BASE)
AnnaBridge 167:e84263d55307 129 static void uart7_irq(void)
AnnaBridge 167:e84263d55307 130 {
AnnaBridge 182:57724642e740 131 uart_irq(UART_7);
AnnaBridge 167:e84263d55307 132 }
AnnaBridge 167:e84263d55307 133 #endif
AnnaBridge 167:e84263d55307 134
AnnaBridge 167:e84263d55307 135 #if defined(UART8_BASE)
AnnaBridge 167:e84263d55307 136 static void uart8_irq(void)
AnnaBridge 167:e84263d55307 137 {
AnnaBridge 182:57724642e740 138 uart_irq(UART_8);
AnnaBridge 167:e84263d55307 139 }
AnnaBridge 167:e84263d55307 140 #endif
AnnaBridge 167:e84263d55307 141
AnnaBridge 168:9672193075cf 142 #if defined(UART9_BASE)
AnnaBridge 168:9672193075cf 143 static void uart9_irq(void)
AnnaBridge 168:9672193075cf 144 {
AnnaBridge 182:57724642e740 145 uart_irq(UART_9);
AnnaBridge 168:9672193075cf 146 }
AnnaBridge 168:9672193075cf 147 #endif
AnnaBridge 168:9672193075cf 148
AnnaBridge 168:9672193075cf 149 #if defined(UART10_BASE)
AnnaBridge 168:9672193075cf 150 static void uart10_irq(void)
AnnaBridge 168:9672193075cf 151 {
AnnaBridge 182:57724642e740 152 uart_irq(UART_10);
AnnaBridge 168:9672193075cf 153 }
AnnaBridge 168:9672193075cf 154 #endif
AnnaBridge 168:9672193075cf 155
AnnaBridge 167:e84263d55307 156 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
AnnaBridge 167:e84263d55307 157 {
AnnaBridge 167:e84263d55307 158 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 159
AnnaBridge 167:e84263d55307 160 irq_handler = handler;
AnnaBridge 167:e84263d55307 161 serial_irq_ids[obj_s->index] = id;
AnnaBridge 167:e84263d55307 162 }
AnnaBridge 167:e84263d55307 163
AnnaBridge 167:e84263d55307 164 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
AnnaBridge 167:e84263d55307 165 {
AnnaBridge 167:e84263d55307 166 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 167 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 168 IRQn_Type irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 169 uint32_t vector = 0;
AnnaBridge 167:e84263d55307 170
AnnaBridge 182:57724642e740 171 switch (obj_s->uart) {
AnnaBridge 182:57724642e740 172 #if defined(USART1_BASE)
AnnaBridge 182:57724642e740 173 case UART_1:
AnnaBridge 167:e84263d55307 174 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 175 vector = (uint32_t)&uart1_irq;
AnnaBridge 167:e84263d55307 176 break;
AnnaBridge 182:57724642e740 177 #endif
AnnaBridge 182:57724642e740 178 #if defined(USART2_BASE)
AnnaBridge 182:57724642e740 179 case UART_2:
AnnaBridge 167:e84263d55307 180 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 181 vector = (uint32_t)&uart2_irq;
AnnaBridge 167:e84263d55307 182 break;
AnnaBridge 182:57724642e740 183 #endif
AnnaBridge 167:e84263d55307 184 #if defined(USART3_BASE)
AnnaBridge 182:57724642e740 185 case UART_3:
AnnaBridge 167:e84263d55307 186 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 187 vector = (uint32_t)&uart3_irq;
AnnaBridge 167:e84263d55307 188 break;
AnnaBridge 167:e84263d55307 189 #endif
AnnaBridge 167:e84263d55307 190 #if defined(UART4_BASE)
AnnaBridge 182:57724642e740 191 case UART_4:
AnnaBridge 167:e84263d55307 192 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 193 vector = (uint32_t)&uart4_irq;
AnnaBridge 167:e84263d55307 194 break;
AnnaBridge 167:e84263d55307 195 #endif
AnnaBridge 167:e84263d55307 196 #if defined(UART5_BASE)
AnnaBridge 182:57724642e740 197 case UART_5:
AnnaBridge 167:e84263d55307 198 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 199 vector = (uint32_t)&uart5_irq;
AnnaBridge 167:e84263d55307 200 break;
AnnaBridge 167:e84263d55307 201 #endif
AnnaBridge 167:e84263d55307 202 #if defined(USART6_BASE)
AnnaBridge 182:57724642e740 203 case UART_6:
AnnaBridge 167:e84263d55307 204 irq_n = USART6_IRQn;
AnnaBridge 167:e84263d55307 205 vector = (uint32_t)&uart6_irq;
AnnaBridge 167:e84263d55307 206 break;
AnnaBridge 167:e84263d55307 207 #endif
AnnaBridge 167:e84263d55307 208 #if defined(UART7_BASE)
AnnaBridge 182:57724642e740 209 case UART_7:
AnnaBridge 167:e84263d55307 210 irq_n = UART7_IRQn;
AnnaBridge 167:e84263d55307 211 vector = (uint32_t)&uart7_irq;
AnnaBridge 167:e84263d55307 212 break;
AnnaBridge 167:e84263d55307 213 #endif
AnnaBridge 167:e84263d55307 214 #if defined(UART8_BASE)
AnnaBridge 182:57724642e740 215 case UART_8:
AnnaBridge 167:e84263d55307 216 irq_n = UART8_IRQn;
AnnaBridge 167:e84263d55307 217 vector = (uint32_t)&uart8_irq;
AnnaBridge 167:e84263d55307 218 break;
AnnaBridge 167:e84263d55307 219 #endif
AnnaBridge 168:9672193075cf 220 #if defined(UART9_BASE)
AnnaBridge 182:57724642e740 221 case UART_9:
AnnaBridge 168:9672193075cf 222 irq_n = UART9_IRQn;
AnnaBridge 168:9672193075cf 223 vector = (uint32_t)&uart9_irq;
AnnaBridge 168:9672193075cf 224 break;
AnnaBridge 168:9672193075cf 225 #endif
AnnaBridge 168:9672193075cf 226 #if defined(UART10_BASE)
AnnaBridge 182:57724642e740 227 case UART_10:
AnnaBridge 168:9672193075cf 228 irq_n = UART10_IRQn;
AnnaBridge 168:9672193075cf 229 vector = (uint32_t)&uart10_irq;
AnnaBridge 168:9672193075cf 230 break;
AnnaBridge 168:9672193075cf 231 #endif
AnnaBridge 167:e84263d55307 232 }
AnnaBridge 167:e84263d55307 233
AnnaBridge 167:e84263d55307 234 if (enable) {
AnnaBridge 167:e84263d55307 235 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 236 __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 237 } else { // TxIrq
Kojto 171:19eb464bc2be 238 __HAL_UART_ENABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 239 }
AnnaBridge 182:57724642e740 240 NVIC_SetVector(irq_n, vector);
AnnaBridge 182:57724642e740 241 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 242
AnnaBridge 167:e84263d55307 243 } else { // disable
AnnaBridge 167:e84263d55307 244 int all_disabled = 0;
AnnaBridge 167:e84263d55307 245 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 246 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 247 // Check if TxIrq is disabled too
AnnaBridge 167:e84263d55307 248 if ((huart->Instance->CR1 & USART_CR1_TXEIE) == 0) {
AnnaBridge 167:e84263d55307 249 all_disabled = 1;
AnnaBridge 167:e84263d55307 250 }
AnnaBridge 167:e84263d55307 251 } else { // TxIrq
Kojto 171:19eb464bc2be 252 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 253 // Check if RxIrq is disabled too
AnnaBridge 167:e84263d55307 254 if ((huart->Instance->CR1 & USART_CR1_RXNEIE) == 0) {
AnnaBridge 167:e84263d55307 255 all_disabled = 1;
AnnaBridge 167:e84263d55307 256 }
AnnaBridge 167:e84263d55307 257 }
AnnaBridge 167:e84263d55307 258
AnnaBridge 167:e84263d55307 259 if (all_disabled) {
AnnaBridge 182:57724642e740 260 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 261 }
AnnaBridge 167:e84263d55307 262 }
AnnaBridge 167:e84263d55307 263 }
AnnaBridge 167:e84263d55307 264
AnnaBridge 167:e84263d55307 265 /******************************************************************************
AnnaBridge 167:e84263d55307 266 * READ/WRITE
AnnaBridge 167:e84263d55307 267 ******************************************************************************/
AnnaBridge 167:e84263d55307 268
AnnaBridge 167:e84263d55307 269 int serial_getc(serial_t *obj)
AnnaBridge 167:e84263d55307 270 {
AnnaBridge 167:e84263d55307 271 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 272 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 273
AnnaBridge 167:e84263d55307 274 while (!serial_readable(obj));
AnnaBridge 167:e84263d55307 275 return (int)(huart->Instance->DR & 0x1FF);
AnnaBridge 167:e84263d55307 276 }
AnnaBridge 167:e84263d55307 277
AnnaBridge 167:e84263d55307 278 void serial_putc(serial_t *obj, int c)
AnnaBridge 167:e84263d55307 279 {
AnnaBridge 167:e84263d55307 280 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 281 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 282
AnnaBridge 167:e84263d55307 283 while (!serial_writable(obj));
AnnaBridge 167:e84263d55307 284 huart->Instance->DR = (uint32_t)(c & 0x1FF);
AnnaBridge 167:e84263d55307 285 }
AnnaBridge 167:e84263d55307 286
AnnaBridge 167:e84263d55307 287 void serial_clear(serial_t *obj)
AnnaBridge 167:e84263d55307 288 {
AnnaBridge 167:e84263d55307 289 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 290 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 182:57724642e740 291
AnnaBridge 167:e84263d55307 292 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 293 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 294 }
AnnaBridge 167:e84263d55307 295
AnnaBridge 167:e84263d55307 296 void serial_break_set(serial_t *obj)
AnnaBridge 167:e84263d55307 297 {
AnnaBridge 167:e84263d55307 298 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 299 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 182:57724642e740 300
AnnaBridge 167:e84263d55307 301 HAL_LIN_SendBreak(huart);
AnnaBridge 167:e84263d55307 302 }
AnnaBridge 167:e84263d55307 303
AnnaBridge 167:e84263d55307 304 #if DEVICE_SERIAL_ASYNCH
AnnaBridge 167:e84263d55307 305
AnnaBridge 167:e84263d55307 306 /******************************************************************************
AnnaBridge 167:e84263d55307 307 * LOCAL HELPER FUNCTIONS
AnnaBridge 167:e84263d55307 308 ******************************************************************************/
AnnaBridge 167:e84263d55307 309
AnnaBridge 167:e84263d55307 310 /**
AnnaBridge 167:e84263d55307 311 * Configure the TX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 312 *
AnnaBridge 167:e84263d55307 313 * @param obj The serial object.
AnnaBridge 167:e84263d55307 314 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 315 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 316 */
AnnaBridge 167:e84263d55307 317 static void serial_tx_buffer_set(serial_t *obj, void *tx, int tx_length, uint8_t width)
AnnaBridge 167:e84263d55307 318 {
AnnaBridge 167:e84263d55307 319 (void)width;
AnnaBridge 167:e84263d55307 320
AnnaBridge 167:e84263d55307 321 // Exit if a transmit is already on-going
AnnaBridge 167:e84263d55307 322 if (serial_tx_active(obj)) {
AnnaBridge 167:e84263d55307 323 return;
AnnaBridge 167:e84263d55307 324 }
AnnaBridge 167:e84263d55307 325
AnnaBridge 167:e84263d55307 326 obj->tx_buff.buffer = tx;
AnnaBridge 167:e84263d55307 327 obj->tx_buff.length = tx_length;
AnnaBridge 167:e84263d55307 328 obj->tx_buff.pos = 0;
AnnaBridge 167:e84263d55307 329 }
AnnaBridge 167:e84263d55307 330
AnnaBridge 167:e84263d55307 331 /**
AnnaBridge 167:e84263d55307 332 * Configure the RX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 333 *
AnnaBridge 167:e84263d55307 334 * @param obj The serial object.
AnnaBridge 167:e84263d55307 335 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 336 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 337 */
AnnaBridge 167:e84263d55307 338 static void serial_rx_buffer_set(serial_t *obj, void *rx, int rx_length, uint8_t width)
AnnaBridge 167:e84263d55307 339 {
AnnaBridge 167:e84263d55307 340 (void)width;
AnnaBridge 167:e84263d55307 341
AnnaBridge 167:e84263d55307 342 // Exit if a reception is already on-going
AnnaBridge 167:e84263d55307 343 if (serial_rx_active(obj)) {
AnnaBridge 167:e84263d55307 344 return;
AnnaBridge 167:e84263d55307 345 }
AnnaBridge 167:e84263d55307 346
AnnaBridge 167:e84263d55307 347 obj->rx_buff.buffer = rx;
AnnaBridge 167:e84263d55307 348 obj->rx_buff.length = rx_length;
AnnaBridge 167:e84263d55307 349 obj->rx_buff.pos = 0;
AnnaBridge 167:e84263d55307 350 }
AnnaBridge 167:e84263d55307 351
AnnaBridge 167:e84263d55307 352 /**
AnnaBridge 167:e84263d55307 353 * Configure events
AnnaBridge 167:e84263d55307 354 *
AnnaBridge 167:e84263d55307 355 * @param obj The serial object
AnnaBridge 167:e84263d55307 356 * @param event The logical OR of the events to configure
AnnaBridge 167:e84263d55307 357 * @param enable Set to non-zero to enable events, or zero to disable them
AnnaBridge 167:e84263d55307 358 */
AnnaBridge 167:e84263d55307 359 static void serial_enable_event(serial_t *obj, int event, uint8_t enable)
AnnaBridge 167:e84263d55307 360 {
AnnaBridge 167:e84263d55307 361 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 362
AnnaBridge 167:e84263d55307 363 // Shouldn't have to enable interrupt here, just need to keep track of the requested events.
AnnaBridge 167:e84263d55307 364 if (enable) {
AnnaBridge 167:e84263d55307 365 obj_s->events |= event;
AnnaBridge 167:e84263d55307 366 } else {
AnnaBridge 167:e84263d55307 367 obj_s->events &= ~event;
AnnaBridge 167:e84263d55307 368 }
AnnaBridge 167:e84263d55307 369 }
AnnaBridge 167:e84263d55307 370
AnnaBridge 167:e84263d55307 371
AnnaBridge 167:e84263d55307 372 /**
AnnaBridge 167:e84263d55307 373 * Get index of serial object TX IRQ, relating it to the physical peripheral.
AnnaBridge 167:e84263d55307 374 *
AnnaBridge 182:57724642e740 375 * @param uart_name i.e. UART_1, UART_2, ...
AnnaBridge 167:e84263d55307 376 * @return internal NVIC TX IRQ index of U(S)ART peripheral
AnnaBridge 167:e84263d55307 377 */
AnnaBridge 182:57724642e740 378 static IRQn_Type serial_get_irq_n(UARTName uart_name)
AnnaBridge 167:e84263d55307 379 {
AnnaBridge 167:e84263d55307 380 IRQn_Type irq_n;
AnnaBridge 167:e84263d55307 381
AnnaBridge 182:57724642e740 382 switch (uart_name) {
AnnaBridge 167:e84263d55307 383 #if defined(USART1_BASE)
AnnaBridge 182:57724642e740 384 case UART_1:
AnnaBridge 167:e84263d55307 385 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 386 break;
AnnaBridge 167:e84263d55307 387 #endif
AnnaBridge 167:e84263d55307 388 #if defined(USART2_BASE)
AnnaBridge 182:57724642e740 389 case UART_2:
AnnaBridge 167:e84263d55307 390 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 391 break;
AnnaBridge 167:e84263d55307 392 #endif
AnnaBridge 167:e84263d55307 393 #if defined(USART3_BASE)
AnnaBridge 182:57724642e740 394 case UART_3:
AnnaBridge 167:e84263d55307 395 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 396 break;
AnnaBridge 167:e84263d55307 397 #endif
AnnaBridge 167:e84263d55307 398 #if defined(UART4_BASE)
AnnaBridge 182:57724642e740 399 case UART_4:
AnnaBridge 167:e84263d55307 400 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 401 break;
AnnaBridge 167:e84263d55307 402 #endif
AnnaBridge 182:57724642e740 403 #if defined(UART5_BASE)
AnnaBridge 182:57724642e740 404 case UART_5:
AnnaBridge 167:e84263d55307 405 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 406 break;
AnnaBridge 167:e84263d55307 407 #endif
AnnaBridge 167:e84263d55307 408 #if defined(USART6_BASE)
AnnaBridge 182:57724642e740 409 case UART_6:
AnnaBridge 167:e84263d55307 410 irq_n = USART6_IRQn;
AnnaBridge 167:e84263d55307 411 break;
AnnaBridge 167:e84263d55307 412 #endif
AnnaBridge 167:e84263d55307 413 #if defined(UART7_BASE)
AnnaBridge 182:57724642e740 414 case UART_7:
AnnaBridge 167:e84263d55307 415 irq_n = UART7_IRQn;
AnnaBridge 167:e84263d55307 416 break;
AnnaBridge 167:e84263d55307 417 #endif
AnnaBridge 167:e84263d55307 418 #if defined(UART8_BASE)
AnnaBridge 182:57724642e740 419 case UART_8:
AnnaBridge 167:e84263d55307 420 irq_n = UART8_IRQn;
AnnaBridge 167:e84263d55307 421 break;
AnnaBridge 167:e84263d55307 422 #endif
AnnaBridge 168:9672193075cf 423 #if defined(UART9_BASE)
AnnaBridge 182:57724642e740 424 case UART_9:
AnnaBridge 168:9672193075cf 425 irq_n = UART9_IRQn;
AnnaBridge 168:9672193075cf 426 break;
AnnaBridge 168:9672193075cf 427 #endif
AnnaBridge 168:9672193075cf 428 #if defined(UART10_BASE)
AnnaBridge 182:57724642e740 429 case UART_10:
AnnaBridge 168:9672193075cf 430 irq_n = UART10_IRQn;
AnnaBridge 168:9672193075cf 431 break;
AnnaBridge 168:9672193075cf 432 #endif
AnnaBridge 167:e84263d55307 433 default:
AnnaBridge 167:e84263d55307 434 irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 435 }
AnnaBridge 182:57724642e740 436
AnnaBridge 167:e84263d55307 437 return irq_n;
AnnaBridge 167:e84263d55307 438 }
AnnaBridge 167:e84263d55307 439
AnnaBridge 167:e84263d55307 440 /******************************************************************************
AnnaBridge 167:e84263d55307 441 * MBED API FUNCTIONS
AnnaBridge 167:e84263d55307 442 ******************************************************************************/
AnnaBridge 167:e84263d55307 443
AnnaBridge 167:e84263d55307 444 /**
AnnaBridge 167:e84263d55307 445 * Begin asynchronous TX transfer. The used buffer is specified in the serial
AnnaBridge 167:e84263d55307 446 * object, tx_buff
AnnaBridge 167:e84263d55307 447 *
AnnaBridge 167:e84263d55307 448 * @param obj The serial object
AnnaBridge 167:e84263d55307 449 * @param tx The buffer for sending
AnnaBridge 167:e84263d55307 450 * @param tx_length The number of words to transmit
AnnaBridge 167:e84263d55307 451 * @param tx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 452 * @param handler The serial handler
AnnaBridge 167:e84263d55307 453 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 454 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 455 * @return Returns number of data transfered, or 0 otherwise
AnnaBridge 167:e84263d55307 456 */
AnnaBridge 167:e84263d55307 457 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 458 {
AnnaBridge 167:e84263d55307 459 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 460 (void) hint;
AnnaBridge 167:e84263d55307 461
AnnaBridge 167:e84263d55307 462 // Check buffer is ok
AnnaBridge 167:e84263d55307 463 MBED_ASSERT(tx != (void*)0);
AnnaBridge 167:e84263d55307 464 MBED_ASSERT(tx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 465
AnnaBridge 167:e84263d55307 466 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 467 UART_HandleTypeDef * huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 468
AnnaBridge 167:e84263d55307 469 if (tx_length == 0) {
AnnaBridge 167:e84263d55307 470 return 0;
AnnaBridge 167:e84263d55307 471 }
AnnaBridge 167:e84263d55307 472
AnnaBridge 167:e84263d55307 473 // Set up buffer
AnnaBridge 167:e84263d55307 474 serial_tx_buffer_set(obj, (void *)tx, tx_length, tx_width);
AnnaBridge 167:e84263d55307 475
AnnaBridge 167:e84263d55307 476 // Set up events
AnnaBridge 167:e84263d55307 477 serial_enable_event(obj, SERIAL_EVENT_TX_ALL, 0); // Clear all events
AnnaBridge 167:e84263d55307 478 serial_enable_event(obj, event, 1); // Set only the wanted events
AnnaBridge 167:e84263d55307 479
AnnaBridge 167:e84263d55307 480 // Enable interrupt
AnnaBridge 182:57724642e740 481 IRQn_Type irq_n = serial_get_irq_n(obj_s->uart);
AnnaBridge 167:e84263d55307 482 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 483 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 484 NVIC_SetPriority(irq_n, 1);
AnnaBridge 167:e84263d55307 485 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 486 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 487
AnnaBridge 167:e84263d55307 488 // the following function will enable UART_IT_TXE and error interrupts
AnnaBridge 167:e84263d55307 489 if (HAL_UART_Transmit_IT(huart, (uint8_t*)tx, tx_length) != HAL_OK) {
AnnaBridge 167:e84263d55307 490 return 0;
AnnaBridge 167:e84263d55307 491 }
AnnaBridge 167:e84263d55307 492
AnnaBridge 167:e84263d55307 493 return tx_length;
AnnaBridge 167:e84263d55307 494 }
AnnaBridge 167:e84263d55307 495
AnnaBridge 167:e84263d55307 496 /**
AnnaBridge 167:e84263d55307 497 * Begin asynchronous RX transfer (enable interrupt for data collecting)
AnnaBridge 167:e84263d55307 498 * The used buffer is specified in the serial object, rx_buff
AnnaBridge 167:e84263d55307 499 *
AnnaBridge 167:e84263d55307 500 * @param obj The serial object
AnnaBridge 167:e84263d55307 501 * @param rx The buffer for sending
AnnaBridge 167:e84263d55307 502 * @param rx_length The number of words to transmit
AnnaBridge 167:e84263d55307 503 * @param rx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 504 * @param handler The serial handler
AnnaBridge 167:e84263d55307 505 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 506 * @param handler The serial handler
AnnaBridge 167:e84263d55307 507 * @param char_match A character in range 0-254 to be matched
AnnaBridge 167:e84263d55307 508 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 509 */
AnnaBridge 167:e84263d55307 510 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 511 {
AnnaBridge 167:e84263d55307 512 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 513 (void) hint;
AnnaBridge 167:e84263d55307 514
AnnaBridge 167:e84263d55307 515 /* Sanity check arguments */
AnnaBridge 167:e84263d55307 516 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 517 MBED_ASSERT(rx != (void*)0);
AnnaBridge 167:e84263d55307 518 MBED_ASSERT(rx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 519
AnnaBridge 167:e84263d55307 520 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 521 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 522
AnnaBridge 167:e84263d55307 523 serial_enable_event(obj, SERIAL_EVENT_RX_ALL, 0);
AnnaBridge 167:e84263d55307 524 serial_enable_event(obj, event, 1);
AnnaBridge 167:e84263d55307 525
AnnaBridge 167:e84263d55307 526 // set CharMatch
AnnaBridge 167:e84263d55307 527 obj->char_match = char_match;
AnnaBridge 167:e84263d55307 528
AnnaBridge 167:e84263d55307 529 serial_rx_buffer_set(obj, rx, rx_length, rx_width);
AnnaBridge 167:e84263d55307 530
AnnaBridge 182:57724642e740 531 IRQn_Type irq_n = serial_get_irq_n(obj_s->uart);
AnnaBridge 167:e84263d55307 532 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 533 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 534 NVIC_SetPriority(irq_n, 0);
AnnaBridge 167:e84263d55307 535 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 536 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 537
AnnaBridge 167:e84263d55307 538 // following HAL function will enable the RXNE interrupt + error interrupts
AnnaBridge 167:e84263d55307 539 HAL_UART_Receive_IT(huart, (uint8_t*)rx, rx_length);
AnnaBridge 167:e84263d55307 540 }
AnnaBridge 167:e84263d55307 541
AnnaBridge 167:e84263d55307 542 /**
AnnaBridge 167:e84263d55307 543 * Attempts to determine if the serial peripheral is already in use for TX
AnnaBridge 167:e84263d55307 544 *
AnnaBridge 167:e84263d55307 545 * @param obj The serial object
AnnaBridge 167:e84263d55307 546 * @return Non-zero if the TX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 547 */
AnnaBridge 167:e84263d55307 548 uint8_t serial_tx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 549 {
AnnaBridge 167:e84263d55307 550 MBED_ASSERT(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 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_TX) ? 1 : 0);
AnnaBridge 167:e84263d55307 556 }
AnnaBridge 167:e84263d55307 557
AnnaBridge 167:e84263d55307 558 /**
AnnaBridge 167:e84263d55307 559 * Attempts to determine if the serial peripheral is already in use for RX
AnnaBridge 167:e84263d55307 560 *
AnnaBridge 167:e84263d55307 561 * @param obj The serial object
AnnaBridge 167:e84263d55307 562 * @return Non-zero if the RX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 563 */
AnnaBridge 167:e84263d55307 564 uint8_t serial_rx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 565 {
AnnaBridge 167:e84263d55307 566 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 567
AnnaBridge 167:e84263d55307 568 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 569 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 570
AnnaBridge 167:e84263d55307 571 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_RX) ? 1 : 0);
AnnaBridge 167:e84263d55307 572 }
AnnaBridge 167:e84263d55307 573
AnnaBridge 167:e84263d55307 574 void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 575 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 576 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 577 }
AnnaBridge 167:e84263d55307 578 }
AnnaBridge 167:e84263d55307 579
AnnaBridge 167:e84263d55307 580 void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 581 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 178:d650f5d4c87a 582 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear PE flag
AnnaBridge 167:e84263d55307 583 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
AnnaBridge 178:d650f5d4c87a 584 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear FE flag
AnnaBridge 167:e84263d55307 585 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) {
AnnaBridge 178:d650f5d4c87a 586 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear NE flag
AnnaBridge 167:e84263d55307 587 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 178:d650f5d4c87a 588 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear ORE flag
AnnaBridge 167:e84263d55307 589 }
AnnaBridge 167:e84263d55307 590 }
AnnaBridge 167:e84263d55307 591
AnnaBridge 167:e84263d55307 592 /**
AnnaBridge 167:e84263d55307 593 * The asynchronous TX and RX handler.
AnnaBridge 167:e84263d55307 594 *
AnnaBridge 167:e84263d55307 595 * @param obj The serial object
AnnaBridge 167:e84263d55307 596 * @return Returns event flags if a TX/RX transfer termination condition was met or 0 otherwise
AnnaBridge 167:e84263d55307 597 */
AnnaBridge 167:e84263d55307 598 int serial_irq_handler_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 599 {
AnnaBridge 167:e84263d55307 600 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 601 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 602
AnnaBridge 167:e84263d55307 603 volatile int return_event = 0;
AnnaBridge 167:e84263d55307 604 uint8_t *buf = (uint8_t*)(obj->rx_buff.buffer);
AnnaBridge 167:e84263d55307 605 uint8_t i = 0;
AnnaBridge 167:e84263d55307 606
AnnaBridge 167:e84263d55307 607 // TX PART:
AnnaBridge 167:e84263d55307 608 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 609 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
AnnaBridge 167:e84263d55307 610 // Return event SERIAL_EVENT_TX_COMPLETE if requested
AnnaBridge 167:e84263d55307 611 if ((obj_s->events & SERIAL_EVENT_TX_COMPLETE ) != 0) {
AnnaBridge 167:e84263d55307 612 return_event |= (SERIAL_EVENT_TX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 613 }
AnnaBridge 167:e84263d55307 614 }
AnnaBridge 167:e84263d55307 615 }
AnnaBridge 167:e84263d55307 616
AnnaBridge 167:e84263d55307 617 // Handle error events
AnnaBridge 167:e84263d55307 618 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 167:e84263d55307 619 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 620 return_event |= (SERIAL_EVENT_RX_PARITY_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 621 }
AnnaBridge 167:e84263d55307 622 }
AnnaBridge 167:e84263d55307 623
AnnaBridge 167:e84263d55307 624 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
AnnaBridge 167:e84263d55307 625 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 626 return_event |= (SERIAL_EVENT_RX_FRAMING_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 627 }
AnnaBridge 167:e84263d55307 628 }
AnnaBridge 167:e84263d55307 629
AnnaBridge 167:e84263d55307 630 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 167:e84263d55307 631 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 632 return_event |= (SERIAL_EVENT_RX_OVERRUN_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 633 }
AnnaBridge 167:e84263d55307 634 }
AnnaBridge 167:e84263d55307 635
AnnaBridge 167:e84263d55307 636 HAL_UART_IRQHandler(huart);
AnnaBridge 167:e84263d55307 637
AnnaBridge 167:e84263d55307 638 // Abort if an error occurs
AnnaBridge 178:d650f5d4c87a 639 if ((return_event & SERIAL_EVENT_RX_PARITY_ERROR) ||
AnnaBridge 178:d650f5d4c87a 640 (return_event & SERIAL_EVENT_RX_FRAMING_ERROR) ||
AnnaBridge 178:d650f5d4c87a 641 (return_event & SERIAL_EVENT_RX_OVERRUN_ERROR)) {
AnnaBridge 167:e84263d55307 642 return return_event;
AnnaBridge 167:e84263d55307 643 }
AnnaBridge 167:e84263d55307 644
AnnaBridge 167:e84263d55307 645 //RX PART
AnnaBridge 167:e84263d55307 646 if (huart->RxXferSize != 0) {
AnnaBridge 167:e84263d55307 647 obj->rx_buff.pos = huart->RxXferSize - huart->RxXferCount;
AnnaBridge 167:e84263d55307 648 }
AnnaBridge 167:e84263d55307 649 if ((huart->RxXferCount == 0) && (obj->rx_buff.pos >= (obj->rx_buff.length - 1))) {
AnnaBridge 167:e84263d55307 650 return_event |= (SERIAL_EVENT_RX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 651 }
AnnaBridge 167:e84263d55307 652
AnnaBridge 167:e84263d55307 653 // Check if char_match is present
AnnaBridge 167:e84263d55307 654 if (obj_s->events & SERIAL_EVENT_RX_CHARACTER_MATCH) {
AnnaBridge 167:e84263d55307 655 if (buf != NULL) {
AnnaBridge 167:e84263d55307 656 for (i = 0; i < obj->rx_buff.pos; i++) {
AnnaBridge 167:e84263d55307 657 if (buf[i] == obj->char_match) {
AnnaBridge 167:e84263d55307 658 obj->rx_buff.pos = i;
AnnaBridge 167:e84263d55307 659 return_event |= (SERIAL_EVENT_RX_CHARACTER_MATCH & obj_s->events);
AnnaBridge 167:e84263d55307 660 serial_rx_abort_asynch(obj);
AnnaBridge 167:e84263d55307 661 break;
AnnaBridge 167:e84263d55307 662 }
AnnaBridge 167:e84263d55307 663 }
AnnaBridge 167:e84263d55307 664 }
AnnaBridge 167:e84263d55307 665 }
AnnaBridge 167:e84263d55307 666
AnnaBridge 167:e84263d55307 667 return return_event;
AnnaBridge 167:e84263d55307 668 }
AnnaBridge 167:e84263d55307 669
AnnaBridge 167:e84263d55307 670 /**
AnnaBridge 167:e84263d55307 671 * Abort the ongoing TX transaction. It disables the enabled interupt for TX and
AnnaBridge 167:e84263d55307 672 * flush TX hardware buffer if TX FIFO is used
AnnaBridge 167:e84263d55307 673 *
AnnaBridge 167:e84263d55307 674 * @param obj The serial object
AnnaBridge 167:e84263d55307 675 */
AnnaBridge 167:e84263d55307 676 void serial_tx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 677 {
AnnaBridge 167:e84263d55307 678 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 679 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 680
AnnaBridge 167:e84263d55307 681 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
AnnaBridge 167:e84263d55307 682 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 683
AnnaBridge 167:e84263d55307 684 // clear flags
AnnaBridge 167:e84263d55307 685 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 686
AnnaBridge 167:e84263d55307 687 // reset states
AnnaBridge 167:e84263d55307 688 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 689 // update handle state
AnnaBridge 167:e84263d55307 690 if(huart->gState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 691 huart->gState = HAL_UART_STATE_BUSY_RX;
AnnaBridge 167:e84263d55307 692 } else {
AnnaBridge 167:e84263d55307 693 huart->gState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 694 }
AnnaBridge 167:e84263d55307 695 }
AnnaBridge 167:e84263d55307 696
AnnaBridge 167:e84263d55307 697 /**
AnnaBridge 167:e84263d55307 698 * Abort the ongoing RX transaction It disables the enabled interrupt for RX and
AnnaBridge 167:e84263d55307 699 * flush RX hardware buffer if RX FIFO is used
AnnaBridge 167:e84263d55307 700 *
AnnaBridge 167:e84263d55307 701 * @param obj The serial object
AnnaBridge 167:e84263d55307 702 */
AnnaBridge 167:e84263d55307 703 void serial_rx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 704 {
AnnaBridge 167:e84263d55307 705 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 706 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 707
AnnaBridge 167:e84263d55307 708 // disable interrupts
AnnaBridge 167:e84263d55307 709 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 710 __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
AnnaBridge 167:e84263d55307 711 __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
AnnaBridge 167:e84263d55307 712
AnnaBridge 167:e84263d55307 713 // clear flags
AnnaBridge 167:e84263d55307 714 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_RXNE);
AnnaBridge 178:d650f5d4c87a 715 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->DR; // Clear errors flag
AnnaBridge 167:e84263d55307 716
AnnaBridge 167:e84263d55307 717 // reset states
AnnaBridge 167:e84263d55307 718 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 719 // update handle state
AnnaBridge 167:e84263d55307 720 if(huart->RxState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 721 huart->RxState = HAL_UART_STATE_BUSY_TX;
AnnaBridge 167:e84263d55307 722 } else {
AnnaBridge 167:e84263d55307 723 huart->RxState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 724 }
AnnaBridge 167:e84263d55307 725 }
AnnaBridge 167:e84263d55307 726
Anna Bridge 181:96ed750bd169 727 #endif /* DEVICE_SERIAL_ASYNCH */
AnnaBridge 167:e84263d55307 728
AnnaBridge 167:e84263d55307 729 #if DEVICE_SERIAL_FC
AnnaBridge 167:e84263d55307 730
AnnaBridge 167:e84263d55307 731 /**
AnnaBridge 167:e84263d55307 732 * Set HW Control Flow
AnnaBridge 167:e84263d55307 733 * @param obj The serial object
AnnaBridge 167:e84263d55307 734 * @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS)
AnnaBridge 167:e84263d55307 735 * @param rxflow Pin for the rxflow
AnnaBridge 167:e84263d55307 736 * @param txflow Pin for the txflow
AnnaBridge 167:e84263d55307 737 */
AnnaBridge 167:e84263d55307 738 void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow)
AnnaBridge 167:e84263d55307 739 {
AnnaBridge 167:e84263d55307 740 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 741
AnnaBridge 167:e84263d55307 742 // Determine the UART to use (UART_1, UART_2, ...)
AnnaBridge 167:e84263d55307 743 UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 744 UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 745
AnnaBridge 167:e84263d55307 746 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
AnnaBridge 167:e84263d55307 747 obj_s->uart = (UARTName)pinmap_merge(uart_cts, uart_rts);
AnnaBridge 167:e84263d55307 748 MBED_ASSERT(obj_s->uart != (UARTName)NC);
AnnaBridge 167:e84263d55307 749
AnnaBridge 167:e84263d55307 750 if(type == FlowControlNone) {
AnnaBridge 167:e84263d55307 751 // Disable hardware flow control
AnnaBridge 167:e84263d55307 752 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
AnnaBridge 167:e84263d55307 753 }
AnnaBridge 167:e84263d55307 754 if (type == FlowControlRTS) {
AnnaBridge 167:e84263d55307 755 // Enable RTS
AnnaBridge 167:e84263d55307 756 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 757 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS;
AnnaBridge 167:e84263d55307 758 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 759 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 760 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 761 }
AnnaBridge 167:e84263d55307 762 if (type == FlowControlCTS) {
AnnaBridge 167:e84263d55307 763 // Enable CTS
AnnaBridge 167:e84263d55307 764 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 765 obj_s->hw_flow_ctl = UART_HWCONTROL_CTS;
AnnaBridge 167:e84263d55307 766 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 767 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 768 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 769 }
AnnaBridge 167:e84263d55307 770 if (type == FlowControlRTSCTS) {
AnnaBridge 167:e84263d55307 771 // Enable CTS & RTS
AnnaBridge 167:e84263d55307 772 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 773 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 774 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS_CTS;
AnnaBridge 167:e84263d55307 775 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 776 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 777 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 778 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 779 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 780 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 781 }
AnnaBridge 167:e84263d55307 782
AnnaBridge 167:e84263d55307 783 init_uart(obj);
AnnaBridge 167:e84263d55307 784 }
AnnaBridge 167:e84263d55307 785
Anna Bridge 181:96ed750bd169 786 #endif /* DEVICE_SERIAL_FC */
AnnaBridge 167:e84263d55307 787
Anna Bridge 181:96ed750bd169 788 #endif /* DEVICE_SERIAL */