Iftikhar Aziz / mbed-dev

4545

Dependents:   LSS_Rev_1

Fork of mbed-dev by Umar Naeem

targets/TARGET_STM/TARGET_STM32F3/serial_api.c@149:156823d33999, 2016-10-28 (annotated)

Committer:
<>
Date:
Fri Oct 28 11:17:30 2016 +0100
Revision:
149:156823d33999
Child:
150:02e0a0aed4ec
This updates the lib to the mbed lib v128



NOTE: This release includes a restructuring of the file and directory locations and thus some

include paths in your code may need updating accordingly.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 149:156823d33999 1 /* mbed Microcontroller Library
<> 149:156823d33999 2 *******************************************************************************
<> 149:156823d33999 3 * Copyright (c) 2014, STMicroelectronics
<> 149:156823d33999 4 * All rights reserved.
<> 149:156823d33999 5 *
<> 149:156823d33999 6 * Redistribution and use in source and binary forms, with or without
<> 149:156823d33999 7 * modification, are permitted provided that the following conditions are met:
<> 149:156823d33999 8 *
<> 149:156823d33999 9 * 1. Redistributions of source code must retain the above copyright notice,
<> 149:156823d33999 10 * this list of conditions and the following disclaimer.
<> 149:156823d33999 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 149:156823d33999 12 * this list of conditions and the following disclaimer in the documentation
<> 149:156823d33999 13 * and/or other materials provided with the distribution.
<> 149:156823d33999 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 149:156823d33999 15 * may be used to endorse or promote products derived from this software
<> 149:156823d33999 16 * without specific prior written permission.
<> 149:156823d33999 17 *
<> 149:156823d33999 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 149:156823d33999 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 149:156823d33999 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 149:156823d33999 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 149:156823d33999 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 149:156823d33999 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 149:156823d33999 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 149:156823d33999 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 149:156823d33999 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 149:156823d33999 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 149:156823d33999 28 *******************************************************************************
<> 149:156823d33999 29 */
<> 149:156823d33999 30 #include "mbed_assert.h"
<> 149:156823d33999 31 #include "serial_api.h"
<> 149:156823d33999 32
<> 149:156823d33999 33 #if DEVICE_SERIAL
<> 149:156823d33999 34
<> 149:156823d33999 35 #include "cmsis.h"
<> 149:156823d33999 36 #include "pinmap.h"
<> 149:156823d33999 37 #include <string.h>
<> 149:156823d33999 38 #include "PeripheralPins.h"
<> 149:156823d33999 39 #include "mbed_error.h"
<> 149:156823d33999 40
<> 149:156823d33999 41 #define UART_NUM (5)
<> 149:156823d33999 42
<> 149:156823d33999 43 static uint32_t serial_irq_ids[UART_NUM] = {0};
<> 149:156823d33999 44 static UART_HandleTypeDef uart_handlers[UART_NUM];
<> 149:156823d33999 45
<> 149:156823d33999 46 static uart_irq_handler irq_handler;
<> 149:156823d33999 47
<> 149:156823d33999 48 int stdio_uart_inited = 0;
<> 149:156823d33999 49 serial_t stdio_uart;
<> 149:156823d33999 50
<> 149:156823d33999 51 #if DEVICE_SERIAL_ASYNCH
<> 149:156823d33999 52 #define SERIAL_S(obj) (&((obj)->serial))
<> 149:156823d33999 53 #else
<> 149:156823d33999 54 #define SERIAL_S(obj) (obj)
<> 149:156823d33999 55 #endif
<> 149:156823d33999 56
<> 149:156823d33999 57 static void init_uart(serial_t *obj)
<> 149:156823d33999 58 {
<> 149:156823d33999 59 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 60 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 61 huart->Instance = (USART_TypeDef *)(obj_s->uart);
<> 149:156823d33999 62
<> 149:156823d33999 63 huart->Init.BaudRate = obj_s->baudrate;
<> 149:156823d33999 64 huart->Init.WordLength = obj_s->databits;
<> 149:156823d33999 65 huart->Init.StopBits = obj_s->stopbits;
<> 149:156823d33999 66 huart->Init.Parity = obj_s->parity;
<> 149:156823d33999 67 #if DEVICE_SERIAL_FC
<> 149:156823d33999 68 huart->Init.HwFlowCtl = obj_s->hw_flow_ctl;
<> 149:156823d33999 69 #else
<> 149:156823d33999 70 huart->Init.HwFlowCtl = UART_HWCONTROL_NONE;
<> 149:156823d33999 71 #endif
<> 149:156823d33999 72 huart->TxXferCount = 0;
<> 149:156823d33999 73 huart->TxXferSize = 0;
<> 149:156823d33999 74 huart->RxXferCount = 0;
<> 149:156823d33999 75 huart->RxXferSize = 0;
<> 149:156823d33999 76
<> 149:156823d33999 77 if (obj_s->pin_rx == NC) {
<> 149:156823d33999 78 huart->Init.Mode = UART_MODE_TX;
<> 149:156823d33999 79 } else if (obj_s->pin_tx == NC) {
<> 149:156823d33999 80 huart->Init.Mode = UART_MODE_RX;
<> 149:156823d33999 81 } else {
<> 149:156823d33999 82 huart->Init.Mode = UART_MODE_TX_RX;
<> 149:156823d33999 83 }
<> 149:156823d33999 84
<> 149:156823d33999 85
<> 149:156823d33999 86 if (HAL_UART_Init(huart) != HAL_OK) {
<> 149:156823d33999 87 error("Cannot initialize UART\n");
<> 149:156823d33999 88 }
<> 149:156823d33999 89 }
<> 149:156823d33999 90
<> 149:156823d33999 91 void serial_init(serial_t *obj, PinName tx, PinName rx)
<> 149:156823d33999 92 {
<> 149:156823d33999 93 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 94
<> 149:156823d33999 95 // Determine the UART to use (UART_1, UART_2, ...)
<> 149:156823d33999 96 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
<> 149:156823d33999 97 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
<> 149:156823d33999 98
<> 149:156823d33999 99 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
<> 149:156823d33999 100 obj_s->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
<> 149:156823d33999 101 MBED_ASSERT(obj_s->uart != (UARTName)NC);
<> 149:156823d33999 102
<> 149:156823d33999 103 // Enable USART clock + switch to SystemClock
<> 149:156823d33999 104 if (obj_s->uart == UART_1) {
<> 149:156823d33999 105 __USART1_FORCE_RESET();
<> 149:156823d33999 106 __USART1_RELEASE_RESET();
<> 149:156823d33999 107 __USART1_CLK_ENABLE();
<> 149:156823d33999 108 #if defined(RCC_USART1CLKSOURCE_SYSCLK)
<> 149:156823d33999 109 __HAL_RCC_USART1_CONFIG(RCC_USART1CLKSOURCE_SYSCLK);
<> 149:156823d33999 110 #endif
<> 149:156823d33999 111 obj_s->index = 0;
<> 149:156823d33999 112 }
<> 149:156823d33999 113 #if defined(USART2_BASE)
<> 149:156823d33999 114 if (obj_s->uart == UART_2) {
<> 149:156823d33999 115 __USART2_FORCE_RESET();
<> 149:156823d33999 116 __USART2_RELEASE_RESET();
<> 149:156823d33999 117 __USART2_CLK_ENABLE();
<> 149:156823d33999 118 #if defined(RCC_USART2CLKSOURCE_SYSCLK)
<> 149:156823d33999 119 __HAL_RCC_USART2_CONFIG(RCC_USART2CLKSOURCE_SYSCLK);
<> 149:156823d33999 120 #endif
<> 149:156823d33999 121 obj_s->index = 1;
<> 149:156823d33999 122 }
<> 149:156823d33999 123 #endif
<> 149:156823d33999 124 #if defined(USART3_BASE)
<> 149:156823d33999 125 if (obj_s->uart == UART_3) {
<> 149:156823d33999 126 __USART3_FORCE_RESET();
<> 149:156823d33999 127 __USART3_RELEASE_RESET();
<> 149:156823d33999 128 __USART3_CLK_ENABLE();
<> 149:156823d33999 129 #if defined(RCC_USART3CLKSOURCE_SYSCLK)
<> 149:156823d33999 130 __HAL_RCC_USART3_CONFIG(RCC_USART3CLKSOURCE_SYSCLK);
<> 149:156823d33999 131 #endif
<> 149:156823d33999 132 obj_s->index = 2;
<> 149:156823d33999 133 }
<> 149:156823d33999 134 #endif
<> 149:156823d33999 135 #if defined(UART4_BASE)
<> 149:156823d33999 136 if (obj_s->uart == UART_4) {
<> 149:156823d33999 137 __UART4_FORCE_RESET();
<> 149:156823d33999 138 __UART4_RELEASE_RESET();
<> 149:156823d33999 139 __UART4_CLK_ENABLE();
<> 149:156823d33999 140 #if defined(RCC_UART4CLKSOURCE_SYSCLK)
<> 149:156823d33999 141 __HAL_RCC_UART4_CONFIG(RCC_UART4CLKSOURCE_SYSCLK);
<> 149:156823d33999 142 #endif
<> 149:156823d33999 143 obj_s->index = 3;
<> 149:156823d33999 144 }
<> 149:156823d33999 145 #endif
<> 149:156823d33999 146 #if defined(UART5_BASE)
<> 149:156823d33999 147 if (obj_s->uart == UART_5) {
<> 149:156823d33999 148 __HAL_RCC_UART5_FORCE_RESET();
<> 149:156823d33999 149 __HAL_RCC_UART5_RELEASE_RESET();
<> 149:156823d33999 150 __UART5_CLK_ENABLE();
<> 149:156823d33999 151 #if defined(RCC_UART5CLKSOURCE_SYSCLK)
<> 149:156823d33999 152 __HAL_RCC_UART5_CONFIG(RCC_UART5CLKSOURCE_SYSCLK);
<> 149:156823d33999 153 #endif
<> 149:156823d33999 154 obj_s->index = 4;
<> 149:156823d33999 155 }
<> 149:156823d33999 156 #endif
<> 149:156823d33999 157
<> 149:156823d33999 158 // Configure the UART pins
<> 149:156823d33999 159 pinmap_pinout(tx, PinMap_UART_TX);
<> 149:156823d33999 160 pinmap_pinout(rx, PinMap_UART_RX);
<> 149:156823d33999 161
<> 149:156823d33999 162 if (tx != NC) {
<> 149:156823d33999 163 pin_mode(tx, PullUp);
<> 149:156823d33999 164 }
<> 149:156823d33999 165 if (rx != NC) {
<> 149:156823d33999 166 pin_mode(rx, PullUp);
<> 149:156823d33999 167 }
<> 149:156823d33999 168
<> 149:156823d33999 169 // Configure UART
<> 149:156823d33999 170 obj_s->baudrate = 9600;
<> 149:156823d33999 171 obj_s->databits = UART_WORDLENGTH_8B;
<> 149:156823d33999 172 obj_s->stopbits = UART_STOPBITS_1;
<> 149:156823d33999 173 obj_s->parity = UART_PARITY_NONE;
<> 149:156823d33999 174
<> 149:156823d33999 175 #if DEVICE_SERIAL_FC
<> 149:156823d33999 176 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
<> 149:156823d33999 177 #endif
<> 149:156823d33999 178
<> 149:156823d33999 179 obj_s->pin_tx = tx;
<> 149:156823d33999 180 obj_s->pin_rx = rx;
<> 149:156823d33999 181
<> 149:156823d33999 182 init_uart(obj);
<> 149:156823d33999 183
<> 149:156823d33999 184 // For stdio management
<> 149:156823d33999 185 if (obj_s->uart == STDIO_UART) {
<> 149:156823d33999 186 stdio_uart_inited = 1;
<> 149:156823d33999 187 memcpy(&stdio_uart, obj, sizeof(serial_t));
<> 149:156823d33999 188 }
<> 149:156823d33999 189 }
<> 149:156823d33999 190
<> 149:156823d33999 191 void serial_free(serial_t *obj)
<> 149:156823d33999 192 {
<> 149:156823d33999 193 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 194
<> 149:156823d33999 195 // Reset UART and disable clock
<> 149:156823d33999 196 if (obj_s->uart == UART_1) {
<> 149:156823d33999 197 __USART1_FORCE_RESET();
<> 149:156823d33999 198 __USART1_RELEASE_RESET();
<> 149:156823d33999 199 __USART1_CLK_DISABLE();
<> 149:156823d33999 200 }
<> 149:156823d33999 201 if (obj_s->uart == UART_2) {
<> 149:156823d33999 202 __USART2_FORCE_RESET();
<> 149:156823d33999 203 __USART2_RELEASE_RESET();
<> 149:156823d33999 204 __USART2_CLK_DISABLE();
<> 149:156823d33999 205 }
<> 149:156823d33999 206 #if defined(USART3_BASE)
<> 149:156823d33999 207 if (obj_s->uart == UART_3) {
<> 149:156823d33999 208 __USART3_FORCE_RESET();
<> 149:156823d33999 209 __USART3_RELEASE_RESET();
<> 149:156823d33999 210 __USART3_CLK_DISABLE();
<> 149:156823d33999 211 }
<> 149:156823d33999 212 #endif
<> 149:156823d33999 213 #if defined(UART4_BASE)
<> 149:156823d33999 214 if (obj_s->uart == UART_4) {
<> 149:156823d33999 215 __UART4_FORCE_RESET();
<> 149:156823d33999 216 __UART4_RELEASE_RESET();
<> 149:156823d33999 217 __UART4_CLK_DISABLE();
<> 149:156823d33999 218 }
<> 149:156823d33999 219 #endif
<> 149:156823d33999 220 #if defined(UART5_BASE)
<> 149:156823d33999 221 if (obj_s->uart == UART_5) {
<> 149:156823d33999 222 __UART5_FORCE_RESET();
<> 149:156823d33999 223 __UART5_RELEASE_RESET();
<> 149:156823d33999 224 __UART5_CLK_DISABLE();
<> 149:156823d33999 225 }
<> 149:156823d33999 226 #endif
<> 149:156823d33999 227
<> 149:156823d33999 228 // Configure GPIOs
<> 149:156823d33999 229 pin_function(obj_s->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
<> 149:156823d33999 230 pin_function(obj_s->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
<> 149:156823d33999 231
<> 149:156823d33999 232 serial_irq_ids[obj_s->index] = 0;
<> 149:156823d33999 233 }
<> 149:156823d33999 234
<> 149:156823d33999 235 void serial_baud(serial_t *obj, int baudrate)
<> 149:156823d33999 236 {
<> 149:156823d33999 237 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 238
<> 149:156823d33999 239 obj_s->baudrate = baudrate;
<> 149:156823d33999 240 init_uart(obj);
<> 149:156823d33999 241 }
<> 149:156823d33999 242
<> 149:156823d33999 243 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
<> 149:156823d33999 244 {
<> 149:156823d33999 245 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 246
<> 149:156823d33999 247 if (data_bits == 9) {
<> 149:156823d33999 248 obj_s->databits = UART_WORDLENGTH_9B;
<> 149:156823d33999 249 } else {
<> 149:156823d33999 250 obj_s->databits = UART_WORDLENGTH_8B;
<> 149:156823d33999 251 }
<> 149:156823d33999 252
<> 149:156823d33999 253 switch (parity) {
<> 149:156823d33999 254 case ParityOdd:
<> 149:156823d33999 255 obj_s->parity = UART_PARITY_ODD;
<> 149:156823d33999 256 break;
<> 149:156823d33999 257 case ParityEven:
<> 149:156823d33999 258 obj_s->parity = UART_PARITY_EVEN;
<> 149:156823d33999 259 break;
<> 149:156823d33999 260 default: // ParityNone
<> 149:156823d33999 261 case ParityForced0: // unsupported!
<> 149:156823d33999 262 case ParityForced1: // unsupported!
<> 149:156823d33999 263 obj_s->parity = UART_PARITY_NONE;
<> 149:156823d33999 264 break;
<> 149:156823d33999 265 }
<> 149:156823d33999 266
<> 149:156823d33999 267 if (stop_bits == 2) {
<> 149:156823d33999 268 obj_s->stopbits = UART_STOPBITS_2;
<> 149:156823d33999 269 } else {
<> 149:156823d33999 270 obj_s->stopbits = UART_STOPBITS_1;
<> 149:156823d33999 271 }
<> 149:156823d33999 272
<> 149:156823d33999 273 init_uart(obj);
<> 149:156823d33999 274 }
<> 149:156823d33999 275
<> 149:156823d33999 276 /******************************************************************************
<> 149:156823d33999 277 * INTERRUPTS HANDLING
<> 149:156823d33999 278 ******************************************************************************/
<> 149:156823d33999 279
<> 149:156823d33999 280 static void uart_irq(int id)
<> 149:156823d33999 281 {
<> 149:156823d33999 282 UART_HandleTypeDef * huart = &uart_handlers[id];
<> 149:156823d33999 283
<> 149:156823d33999 284 if (serial_irq_ids[id] != 0) {
<> 149:156823d33999 285 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
<> 149:156823d33999 286 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
<> 149:156823d33999 287 irq_handler(serial_irq_ids[id], TxIrq);
<> 149:156823d33999 288 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
<> 149:156823d33999 289 }
<> 149:156823d33999 290 }
<> 149:156823d33999 291 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) {
<> 149:156823d33999 292 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_RXNE) != RESET) {
<> 149:156823d33999 293 irq_handler(serial_irq_ids[id], RxIrq);
<> 149:156823d33999 294 volatile uint32_t tmpval = huart->Instance->RDR; // Clear RXNE flag
<> 149:156823d33999 295 }
<> 149:156823d33999 296 }
<> 149:156823d33999 297 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
<> 149:156823d33999 298 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_ORE) != RESET) {
<> 149:156823d33999 299 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
<> 149:156823d33999 300 }
<> 149:156823d33999 301 }
<> 149:156823d33999 302 }
<> 149:156823d33999 303 }
<> 149:156823d33999 304
<> 149:156823d33999 305 static void uart1_irq(void)
<> 149:156823d33999 306 {
<> 149:156823d33999 307 uart_irq(0);
<> 149:156823d33999 308 }
<> 149:156823d33999 309
<> 149:156823d33999 310 static void uart2_irq(void)
<> 149:156823d33999 311 {
<> 149:156823d33999 312 uart_irq(1);
<> 149:156823d33999 313 }
<> 149:156823d33999 314
<> 149:156823d33999 315 #if defined(USART3_BASE)
<> 149:156823d33999 316 static void uart3_irq(void)
<> 149:156823d33999 317 {
<> 149:156823d33999 318 uart_irq(2);
<> 149:156823d33999 319 }
<> 149:156823d33999 320 #endif
<> 149:156823d33999 321
<> 149:156823d33999 322 #if defined(UART4_BASE)
<> 149:156823d33999 323 static void uart4_irq(void)
<> 149:156823d33999 324 {
<> 149:156823d33999 325 uart_irq(3);
<> 149:156823d33999 326 }
<> 149:156823d33999 327 #endif
<> 149:156823d33999 328
<> 149:156823d33999 329 #if defined(UART5_BASE)
<> 149:156823d33999 330 static void uart5_irq(void)
<> 149:156823d33999 331 {
<> 149:156823d33999 332 uart_irq(4);
<> 149:156823d33999 333 }
<> 149:156823d33999 334 #endif
<> 149:156823d33999 335
<> 149:156823d33999 336 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
<> 149:156823d33999 337 {
<> 149:156823d33999 338 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 339
<> 149:156823d33999 340 irq_handler = handler;
<> 149:156823d33999 341 serial_irq_ids[obj_s->index] = id;
<> 149:156823d33999 342 }
<> 149:156823d33999 343
<> 149:156823d33999 344 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
<> 149:156823d33999 345 {
<> 149:156823d33999 346 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 347 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 348 IRQn_Type irq_n = (IRQn_Type)0;
<> 149:156823d33999 349 uint32_t vector = 0;
<> 149:156823d33999 350
<> 149:156823d33999 351 if (obj_s->uart == UART_1) {
<> 149:156823d33999 352 irq_n = USART1_IRQn;
<> 149:156823d33999 353 vector = (uint32_t)&uart1_irq;
<> 149:156823d33999 354 }
<> 149:156823d33999 355
<> 149:156823d33999 356 if (obj_s->uart == UART_2) {
<> 149:156823d33999 357 irq_n = USART2_IRQn;
<> 149:156823d33999 358 vector = (uint32_t)&uart2_irq;
<> 149:156823d33999 359 }
<> 149:156823d33999 360
<> 149:156823d33999 361 #if defined(USART3_BASE)
<> 149:156823d33999 362 if (obj_s->uart == UART_3) {
<> 149:156823d33999 363 irq_n = USART3_IRQn;
<> 149:156823d33999 364 vector = (uint32_t)&uart3_irq;
<> 149:156823d33999 365 }
<> 149:156823d33999 366 #endif
<> 149:156823d33999 367
<> 149:156823d33999 368 #if defined(UART4_BASE)
<> 149:156823d33999 369 if (obj_s->uart == UART_4) {
<> 149:156823d33999 370 irq_n = UART4_IRQn;
<> 149:156823d33999 371 vector = (uint32_t)&uart4_irq;
<> 149:156823d33999 372 }
<> 149:156823d33999 373 #endif
<> 149:156823d33999 374
<> 149:156823d33999 375 #if defined(UART5_BASE)
<> 149:156823d33999 376 if (obj_s->uart == UART_5) {
<> 149:156823d33999 377 irq_n = UART5_IRQn;
<> 149:156823d33999 378 vector = (uint32_t)&uart5_irq;
<> 149:156823d33999 379 }
<> 149:156823d33999 380 #endif
<> 149:156823d33999 381
<> 149:156823d33999 382 if (enable) {
<> 149:156823d33999 383 if (irq == RxIrq) {
<> 149:156823d33999 384 __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
<> 149:156823d33999 385 } else { // TxIrq
<> 149:156823d33999 386 __HAL_UART_ENABLE_IT(huart, UART_IT_TC);
<> 149:156823d33999 387 }
<> 149:156823d33999 388 NVIC_SetVector(irq_n, vector);
<> 149:156823d33999 389 NVIC_EnableIRQ(irq_n);
<> 149:156823d33999 390
<> 149:156823d33999 391 } else { // disable
<> 149:156823d33999 392 int all_disabled = 0;
<> 149:156823d33999 393 if (irq == RxIrq) {
<> 149:156823d33999 394 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
<> 149:156823d33999 395 // Check if TxIrq is disabled too
<> 149:156823d33999 396 if ((huart->Instance->CR1 & USART_CR1_TXEIE) == 0) {
<> 149:156823d33999 397 all_disabled = 1;
<> 149:156823d33999 398 }
<> 149:156823d33999 399 } else { // TxIrq
<> 149:156823d33999 400 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
<> 149:156823d33999 401 // Check if RxIrq is disabled too
<> 149:156823d33999 402 if ((huart->Instance->CR1 & USART_CR1_RXNEIE) == 0) {
<> 149:156823d33999 403 all_disabled = 1;
<> 149:156823d33999 404 }
<> 149:156823d33999 405 }
<> 149:156823d33999 406
<> 149:156823d33999 407 if (all_disabled) {
<> 149:156823d33999 408 NVIC_DisableIRQ(irq_n);
<> 149:156823d33999 409 }
<> 149:156823d33999 410 }
<> 149:156823d33999 411 }
<> 149:156823d33999 412
<> 149:156823d33999 413 /******************************************************************************
<> 149:156823d33999 414 * READ/WRITE
<> 149:156823d33999 415 ******************************************************************************/
<> 149:156823d33999 416
<> 149:156823d33999 417 int serial_getc(serial_t *obj)
<> 149:156823d33999 418 {
<> 149:156823d33999 419 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 420 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 421
<> 149:156823d33999 422 while (!serial_readable(obj));
<> 149:156823d33999 423 if (obj_s->databits == UART_WORDLENGTH_8B) {
<> 149:156823d33999 424 return (int)(huart->Instance->RDR & (uint8_t)0xFF);
<> 149:156823d33999 425 } else {
<> 149:156823d33999 426 return (int)(huart->Instance->RDR & (uint16_t)0x1FF);
<> 149:156823d33999 427 }
<> 149:156823d33999 428 }
<> 149:156823d33999 429
<> 149:156823d33999 430 void serial_putc(serial_t *obj, int c)
<> 149:156823d33999 431 {
<> 149:156823d33999 432 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 433 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 434
<> 149:156823d33999 435 while (!serial_writable(obj));
<> 149:156823d33999 436 if (obj_s->databits == UART_WORDLENGTH_8B) {
<> 149:156823d33999 437 huart->Instance->TDR = (uint8_t)(c & (uint8_t)0xFF);
<> 149:156823d33999 438 } else {
<> 149:156823d33999 439 huart->Instance->TDR = (uint16_t)(c & (uint16_t)0x1FF);
<> 149:156823d33999 440 }
<> 149:156823d33999 441 }
<> 149:156823d33999 442
<> 149:156823d33999 443 int serial_readable(serial_t *obj)
<> 149:156823d33999 444 {
<> 149:156823d33999 445 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 446 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 447
<> 149:156823d33999 448 // Check if data is received
<> 149:156823d33999 449 return (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) ? 1 : 0;
<> 149:156823d33999 450 }
<> 149:156823d33999 451
<> 149:156823d33999 452 int serial_writable(serial_t *obj)
<> 149:156823d33999 453 {
<> 149:156823d33999 454 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 455 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 456
<> 149:156823d33999 457 // Check if data is transmitted
<> 149:156823d33999 458 return (__HAL_UART_GET_FLAG(huart, UART_FLAG_TXE) != RESET) ? 1 : 0;
<> 149:156823d33999 459 }
<> 149:156823d33999 460
<> 149:156823d33999 461 void serial_clear(serial_t *obj)
<> 149:156823d33999 462 {
<> 149:156823d33999 463 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 464 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 465
<> 149:156823d33999 466 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
<> 149:156823d33999 467 __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
<> 149:156823d33999 468 }
<> 149:156823d33999 469
<> 149:156823d33999 470 void serial_pinout_tx(PinName tx)
<> 149:156823d33999 471 {
<> 149:156823d33999 472 pinmap_pinout(tx, PinMap_UART_TX);
<> 149:156823d33999 473 }
<> 149:156823d33999 474
<> 149:156823d33999 475 void serial_break_set(serial_t *obj)
<> 149:156823d33999 476 {
<> 149:156823d33999 477 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 478 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 479
<> 149:156823d33999 480 HAL_LIN_SendBreak(huart);
<> 149:156823d33999 481 }
<> 149:156823d33999 482
<> 149:156823d33999 483 void serial_break_clear(serial_t *obj)
<> 149:156823d33999 484 {
<> 149:156823d33999 485 (void)obj;
<> 149:156823d33999 486 }
<> 149:156823d33999 487
<> 149:156823d33999 488 #if DEVICE_SERIAL_ASYNCH
<> 149:156823d33999 489
<> 149:156823d33999 490 /******************************************************************************
<> 149:156823d33999 491 * LOCAL HELPER FUNCTIONS
<> 149:156823d33999 492 ******************************************************************************/
<> 149:156823d33999 493
<> 149:156823d33999 494 /**
<> 149:156823d33999 495 * Configure the TX buffer for an asynchronous write serial transaction
<> 149:156823d33999 496 *
<> 149:156823d33999 497 * @param obj The serial object.
<> 149:156823d33999 498 * @param tx The buffer for sending.
<> 149:156823d33999 499 * @param tx_length The number of words to transmit.
<> 149:156823d33999 500 */
<> 149:156823d33999 501 static void serial_tx_buffer_set(serial_t *obj, void *tx, int tx_length, uint8_t width)
<> 149:156823d33999 502 {
<> 149:156823d33999 503 (void)width;
<> 149:156823d33999 504
<> 149:156823d33999 505 // Exit if a transmit is already on-going
<> 149:156823d33999 506 if (serial_tx_active(obj)) {
<> 149:156823d33999 507 return;
<> 149:156823d33999 508 }
<> 149:156823d33999 509
<> 149:156823d33999 510 obj->tx_buff.buffer = tx;
<> 149:156823d33999 511 obj->tx_buff.length = tx_length;
<> 149:156823d33999 512 obj->tx_buff.pos = 0;
<> 149:156823d33999 513 }
<> 149:156823d33999 514
<> 149:156823d33999 515 /**
<> 149:156823d33999 516 * Configure the RX buffer for an asynchronous write serial transaction
<> 149:156823d33999 517 *
<> 149:156823d33999 518 * @param obj The serial object.
<> 149:156823d33999 519 * @param tx The buffer for sending.
<> 149:156823d33999 520 * @param tx_length The number of words to transmit.
<> 149:156823d33999 521 */
<> 149:156823d33999 522 static void serial_rx_buffer_set(serial_t *obj, void *rx, int rx_length, uint8_t width)
<> 149:156823d33999 523 {
<> 149:156823d33999 524 (void)width;
<> 149:156823d33999 525
<> 149:156823d33999 526 // Exit if a reception is already on-going
<> 149:156823d33999 527 if (serial_rx_active(obj)) {
<> 149:156823d33999 528 return;
<> 149:156823d33999 529 }
<> 149:156823d33999 530
<> 149:156823d33999 531 obj->rx_buff.buffer = rx;
<> 149:156823d33999 532 obj->rx_buff.length = rx_length;
<> 149:156823d33999 533 obj->rx_buff.pos = 0;
<> 149:156823d33999 534 }
<> 149:156823d33999 535
<> 149:156823d33999 536 /**
<> 149:156823d33999 537 * Configure events
<> 149:156823d33999 538 *
<> 149:156823d33999 539 * @param obj The serial object
<> 149:156823d33999 540 * @param event The logical OR of the events to configure
<> 149:156823d33999 541 * @param enable Set to non-zero to enable events, or zero to disable them
<> 149:156823d33999 542 */
<> 149:156823d33999 543 static void serial_enable_event(serial_t *obj, int event, uint8_t enable)
<> 149:156823d33999 544 {
<> 149:156823d33999 545 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 546
<> 149:156823d33999 547 // Shouldn't have to enable interrupt here, just need to keep track of the requested events.
<> 149:156823d33999 548 if (enable) {
<> 149:156823d33999 549 obj_s->events |= event;
<> 149:156823d33999 550 } else {
<> 149:156823d33999 551 obj_s->events &= ~event;
<> 149:156823d33999 552 }
<> 149:156823d33999 553 }
<> 149:156823d33999 554
<> 149:156823d33999 555
<> 149:156823d33999 556 /**
<> 149:156823d33999 557 * Get index of serial object TX IRQ, relating it to the physical peripheral.
<> 149:156823d33999 558 *
<> 149:156823d33999 559 * @param obj pointer to serial object
<> 149:156823d33999 560 * @return internal NVIC TX IRQ index of U(S)ART peripheral
<> 149:156823d33999 561 */
<> 149:156823d33999 562 static IRQn_Type serial_get_irq_n(serial_t *obj)
<> 149:156823d33999 563 {
<> 149:156823d33999 564 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 565 IRQn_Type irq_n;
<> 149:156823d33999 566
<> 149:156823d33999 567 switch (obj_s->index) {
<> 149:156823d33999 568 case 0:
<> 149:156823d33999 569 irq_n = USART1_IRQn;
<> 149:156823d33999 570 break;
<> 149:156823d33999 571
<> 149:156823d33999 572 case 1:
<> 149:156823d33999 573 irq_n = USART2_IRQn;
<> 149:156823d33999 574 break;
<> 149:156823d33999 575
<> 149:156823d33999 576 #if defined(USART3_BASE)
<> 149:156823d33999 577 case 2:
<> 149:156823d33999 578 irq_n = USART3_IRQn;
<> 149:156823d33999 579 break;
<> 149:156823d33999 580 #endif
<> 149:156823d33999 581 #if defined(USART4_BASE)
<> 149:156823d33999 582 case 3:
<> 149:156823d33999 583 irq_n = USART4_IRQn;
<> 149:156823d33999 584 break;
<> 149:156823d33999 585 #endif
<> 149:156823d33999 586 #if defined(USART5_BASE)
<> 149:156823d33999 587 case 4:
<> 149:156823d33999 588 irq_n = USART5_IRQn;
<> 149:156823d33999 589 break;
<> 149:156823d33999 590 #endif
<> 149:156823d33999 591 default:
<> 149:156823d33999 592 irq_n = (IRQn_Type)0;
<> 149:156823d33999 593 }
<> 149:156823d33999 594
<> 149:156823d33999 595 return irq_n;
<> 149:156823d33999 596 }
<> 149:156823d33999 597
<> 149:156823d33999 598
<> 149:156823d33999 599 /******************************************************************************
<> 149:156823d33999 600 * MBED API FUNCTIONS
<> 149:156823d33999 601 ******************************************************************************/
<> 149:156823d33999 602
<> 149:156823d33999 603 /**
<> 149:156823d33999 604 * Begin asynchronous TX transfer. The used buffer is specified in the serial
<> 149:156823d33999 605 * object, tx_buff
<> 149:156823d33999 606 *
<> 149:156823d33999 607 * @param obj The serial object
<> 149:156823d33999 608 * @param tx The buffer for sending
<> 149:156823d33999 609 * @param tx_length The number of words to transmit
<> 149:156823d33999 610 * @param tx_width The bit width of buffer word
<> 149:156823d33999 611 * @param handler The serial handler
<> 149:156823d33999 612 * @param event The logical OR of events to be registered
<> 149:156823d33999 613 * @param hint A suggestion for how to use DMA with this transfer
<> 149:156823d33999 614 * @return Returns number of data transfered, or 0 otherwise
<> 149:156823d33999 615 */
<> 149:156823d33999 616 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)
<> 149:156823d33999 617 {
<> 149:156823d33999 618 // TODO: DMA usage is currently ignored
<> 149:156823d33999 619 (void) hint;
<> 149:156823d33999 620
<> 149:156823d33999 621 // Check buffer is ok
<> 149:156823d33999 622 MBED_ASSERT(tx != (void*)0);
<> 149:156823d33999 623 MBED_ASSERT(tx_width == 8); // support only 8b width
<> 149:156823d33999 624
<> 149:156823d33999 625 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 626 UART_HandleTypeDef * huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 627
<> 149:156823d33999 628 if (tx_length == 0) {
<> 149:156823d33999 629 return 0;
<> 149:156823d33999 630 }
<> 149:156823d33999 631
<> 149:156823d33999 632 // Set up buffer
<> 149:156823d33999 633 serial_tx_buffer_set(obj, (void *)tx, tx_length, tx_width);
<> 149:156823d33999 634
<> 149:156823d33999 635 // Set up events
<> 149:156823d33999 636 serial_enable_event(obj, SERIAL_EVENT_TX_ALL, 0); // Clear all events
<> 149:156823d33999 637 serial_enable_event(obj, event, 1); // Set only the wanted events
<> 149:156823d33999 638
<> 149:156823d33999 639 // Enable interrupt
<> 149:156823d33999 640 IRQn_Type irq_n = serial_get_irq_n(obj);
<> 149:156823d33999 641 NVIC_ClearPendingIRQ(irq_n);
<> 149:156823d33999 642 NVIC_DisableIRQ(irq_n);
<> 149:156823d33999 643 NVIC_SetPriority(irq_n, 1);
<> 149:156823d33999 644 NVIC_SetVector(irq_n, (uint32_t)handler);
<> 149:156823d33999 645 NVIC_EnableIRQ(irq_n);
<> 149:156823d33999 646
<> 149:156823d33999 647 // the following function will enable UART_IT_TXE and error interrupts
<> 149:156823d33999 648 if (HAL_UART_Transmit_IT(huart, (uint8_t*)tx, tx_length) != HAL_OK) {
<> 149:156823d33999 649 return 0;
<> 149:156823d33999 650 }
<> 149:156823d33999 651
<> 149:156823d33999 652 return tx_length;
<> 149:156823d33999 653 }
<> 149:156823d33999 654
<> 149:156823d33999 655 /**
<> 149:156823d33999 656 * Begin asynchronous RX transfer (enable interrupt for data collecting)
<> 149:156823d33999 657 * The used buffer is specified in the serial object, rx_buff
<> 149:156823d33999 658 *
<> 149:156823d33999 659 * @param obj The serial object
<> 149:156823d33999 660 * @param rx The buffer for sending
<> 149:156823d33999 661 * @param rx_length The number of words to transmit
<> 149:156823d33999 662 * @param rx_width The bit width of buffer word
<> 149:156823d33999 663 * @param handler The serial handler
<> 149:156823d33999 664 * @param event The logical OR of events to be registered
<> 149:156823d33999 665 * @param handler The serial handler
<> 149:156823d33999 666 * @param char_match A character in range 0-254 to be matched
<> 149:156823d33999 667 * @param hint A suggestion for how to use DMA with this transfer
<> 149:156823d33999 668 */
<> 149:156823d33999 669 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)
<> 149:156823d33999 670 {
<> 149:156823d33999 671 // TODO: DMA usage is currently ignored
<> 149:156823d33999 672 (void) hint;
<> 149:156823d33999 673
<> 149:156823d33999 674 /* Sanity check arguments */
<> 149:156823d33999 675 MBED_ASSERT(obj);
<> 149:156823d33999 676 MBED_ASSERT(rx != (void*)0);
<> 149:156823d33999 677 MBED_ASSERT(rx_width == 8); // support only 8b width
<> 149:156823d33999 678
<> 149:156823d33999 679 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 680 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 681
<> 149:156823d33999 682 serial_enable_event(obj, SERIAL_EVENT_RX_ALL, 0);
<> 149:156823d33999 683 serial_enable_event(obj, event, 1);
<> 149:156823d33999 684
<> 149:156823d33999 685 // set CharMatch
<> 149:156823d33999 686 obj->char_match = char_match;
<> 149:156823d33999 687
<> 149:156823d33999 688 serial_rx_buffer_set(obj, rx, rx_length, rx_width);
<> 149:156823d33999 689
<> 149:156823d33999 690 IRQn_Type irq_n = serial_get_irq_n(obj);
<> 149:156823d33999 691 NVIC_ClearPendingIRQ(irq_n);
<> 149:156823d33999 692 NVIC_DisableIRQ(irq_n);
<> 149:156823d33999 693 NVIC_SetPriority(irq_n, 0);
<> 149:156823d33999 694 NVIC_SetVector(irq_n, (uint32_t)handler);
<> 149:156823d33999 695 NVIC_EnableIRQ(irq_n);
<> 149:156823d33999 696
<> 149:156823d33999 697 // following HAL function will enable the RXNE interrupt + error interrupts
<> 149:156823d33999 698 HAL_UART_Receive_IT(huart, (uint8_t*)rx, rx_length);
<> 149:156823d33999 699 }
<> 149:156823d33999 700
<> 149:156823d33999 701 /**
<> 149:156823d33999 702 * Attempts to determine if the serial peripheral is already in use for TX
<> 149:156823d33999 703 *
<> 149:156823d33999 704 * @param obj The serial object
<> 149:156823d33999 705 * @return Non-zero if the TX transaction is ongoing, 0 otherwise
<> 149:156823d33999 706 */
<> 149:156823d33999 707 uint8_t serial_tx_active(serial_t *obj)
<> 149:156823d33999 708 {
<> 149:156823d33999 709 MBED_ASSERT(obj);
<> 149:156823d33999 710
<> 149:156823d33999 711 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 712 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 713
<> 149:156823d33999 714 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_TX) ? 1 : 0);
<> 149:156823d33999 715 }
<> 149:156823d33999 716
<> 149:156823d33999 717 /**
<> 149:156823d33999 718 * Attempts to determine if the serial peripheral is already in use for RX
<> 149:156823d33999 719 *
<> 149:156823d33999 720 * @param obj The serial object
<> 149:156823d33999 721 * @return Non-zero if the RX transaction is ongoing, 0 otherwise
<> 149:156823d33999 722 */
<> 149:156823d33999 723 uint8_t serial_rx_active(serial_t *obj)
<> 149:156823d33999 724 {
<> 149:156823d33999 725 MBED_ASSERT(obj);
<> 149:156823d33999 726
<> 149:156823d33999 727 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 728 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 729
<> 149:156823d33999 730 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_RX) ? 1 : 0);
<> 149:156823d33999 731 }
<> 149:156823d33999 732
<> 149:156823d33999 733 void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) {
<> 149:156823d33999 734 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
<> 149:156823d33999 735 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
<> 149:156823d33999 736 }
<> 149:156823d33999 737 }
<> 149:156823d33999 738
<> 149:156823d33999 739 void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart) {
<> 149:156823d33999 740 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
<> 149:156823d33999 741 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_PEF);
<> 149:156823d33999 742 }
<> 149:156823d33999 743 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
<> 149:156823d33999 744 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_FEF);
<> 149:156823d33999 745 }
<> 149:156823d33999 746 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) {
<> 149:156823d33999 747 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_NEF);
<> 149:156823d33999 748 }
<> 149:156823d33999 749 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
<> 149:156823d33999 750 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
<> 149:156823d33999 751 }
<> 149:156823d33999 752 }
<> 149:156823d33999 753
<> 149:156823d33999 754 /**
<> 149:156823d33999 755 * The asynchronous TX and RX handler.
<> 149:156823d33999 756 *
<> 149:156823d33999 757 * @param obj The serial object
<> 149:156823d33999 758 * @return Returns event flags if a TX/RX transfer termination condition was met or 0 otherwise
<> 149:156823d33999 759 */
<> 149:156823d33999 760 int serial_irq_handler_asynch(serial_t *obj)
<> 149:156823d33999 761 {
<> 149:156823d33999 762 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 763 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 764
<> 149:156823d33999 765 volatile int return_event = 0;
<> 149:156823d33999 766 uint8_t *buf = (uint8_t*)(obj->rx_buff.buffer);
<> 149:156823d33999 767 uint8_t i = 0;
<> 149:156823d33999 768
<> 149:156823d33999 769 // TX PART:
<> 149:156823d33999 770 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
<> 149:156823d33999 771 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
<> 149:156823d33999 772 // Return event SERIAL_EVENT_TX_COMPLETE if requested
<> 149:156823d33999 773 if ((obj_s->events & SERIAL_EVENT_TX_COMPLETE ) != 0) {
<> 149:156823d33999 774 return_event |= (SERIAL_EVENT_TX_COMPLETE & obj_s->events);
<> 149:156823d33999 775 }
<> 149:156823d33999 776 }
<> 149:156823d33999 777 }
<> 149:156823d33999 778
<> 149:156823d33999 779 // Handle error events
<> 149:156823d33999 780 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
<> 149:156823d33999 781 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
<> 149:156823d33999 782 return_event |= (SERIAL_EVENT_RX_PARITY_ERROR & obj_s->events);
<> 149:156823d33999 783 }
<> 149:156823d33999 784 }
<> 149:156823d33999 785
<> 149:156823d33999 786 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
<> 149:156823d33999 787 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
<> 149:156823d33999 788 return_event |= (SERIAL_EVENT_RX_FRAMING_ERROR & obj_s->events);
<> 149:156823d33999 789 }
<> 149:156823d33999 790 }
<> 149:156823d33999 791
<> 149:156823d33999 792 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
<> 149:156823d33999 793 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
<> 149:156823d33999 794 return_event |= (SERIAL_EVENT_RX_OVERRUN_ERROR & obj_s->events);
<> 149:156823d33999 795 }
<> 149:156823d33999 796 }
<> 149:156823d33999 797
<> 149:156823d33999 798 HAL_UART_IRQHandler(huart);
<> 149:156823d33999 799
<> 149:156823d33999 800 // Abort if an error occurs
<> 149:156823d33999 801 if (return_event & SERIAL_EVENT_RX_PARITY_ERROR ||
<> 149:156823d33999 802 return_event & SERIAL_EVENT_RX_FRAMING_ERROR ||
<> 149:156823d33999 803 return_event & SERIAL_EVENT_RX_OVERRUN_ERROR) {
<> 149:156823d33999 804 return return_event;
<> 149:156823d33999 805 }
<> 149:156823d33999 806
<> 149:156823d33999 807 //RX PART
<> 149:156823d33999 808 if (huart->RxXferSize != 0) {
<> 149:156823d33999 809 obj->rx_buff.pos = huart->RxXferSize - huart->RxXferCount;
<> 149:156823d33999 810 }
<> 149:156823d33999 811 if ((huart->RxXferCount == 0) && (obj->rx_buff.pos >= (obj->rx_buff.length - 1))) {
<> 149:156823d33999 812 return_event |= (SERIAL_EVENT_RX_COMPLETE & obj_s->events);
<> 149:156823d33999 813 }
<> 149:156823d33999 814
<> 149:156823d33999 815 // Check if char_match is present
<> 149:156823d33999 816 if (obj_s->events & SERIAL_EVENT_RX_CHARACTER_MATCH) {
<> 149:156823d33999 817 if (buf != NULL) {
<> 149:156823d33999 818 for (i = 0; i < obj->rx_buff.pos; i++) {
<> 149:156823d33999 819 if (buf[i] == obj->char_match) {
<> 149:156823d33999 820 obj->rx_buff.pos = i;
<> 149:156823d33999 821 return_event |= (SERIAL_EVENT_RX_CHARACTER_MATCH & obj_s->events);
<> 149:156823d33999 822 serial_rx_abort_asynch(obj);
<> 149:156823d33999 823 break;
<> 149:156823d33999 824 }
<> 149:156823d33999 825 }
<> 149:156823d33999 826 }
<> 149:156823d33999 827 }
<> 149:156823d33999 828
<> 149:156823d33999 829 return return_event;
<> 149:156823d33999 830 }
<> 149:156823d33999 831
<> 149:156823d33999 832 /**
<> 149:156823d33999 833 * Abort the ongoing TX transaction. It disables the enabled interupt for TX and
<> 149:156823d33999 834 * flush TX hardware buffer if TX FIFO is used
<> 149:156823d33999 835 *
<> 149:156823d33999 836 * @param obj The serial object
<> 149:156823d33999 837 */
<> 149:156823d33999 838 void serial_tx_abort_asynch(serial_t *obj)
<> 149:156823d33999 839 {
<> 149:156823d33999 840 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 841 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 842
<> 149:156823d33999 843 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
<> 149:156823d33999 844 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
<> 149:156823d33999 845
<> 149:156823d33999 846 // clear flags
<> 149:156823d33999 847 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
<> 149:156823d33999 848
<> 149:156823d33999 849 // reset states
<> 149:156823d33999 850 huart->TxXferCount = 0;
<> 149:156823d33999 851 // update handle state
<> 149:156823d33999 852 if(huart->gState == HAL_UART_STATE_BUSY_TX_RX) {
<> 149:156823d33999 853 huart->gState = HAL_UART_STATE_BUSY_RX;
<> 149:156823d33999 854 } else {
<> 149:156823d33999 855 huart->gState = HAL_UART_STATE_READY;
<> 149:156823d33999 856 }
<> 149:156823d33999 857 }
<> 149:156823d33999 858
<> 149:156823d33999 859 /**
<> 149:156823d33999 860 * Abort the ongoing RX transaction It disables the enabled interrupt for RX and
<> 149:156823d33999 861 * flush RX hardware buffer if RX FIFO is used
<> 149:156823d33999 862 *
<> 149:156823d33999 863 * @param obj The serial object
<> 149:156823d33999 864 */
<> 149:156823d33999 865 void serial_rx_abort_asynch(serial_t *obj)
<> 149:156823d33999 866 {
<> 149:156823d33999 867 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 868 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
<> 149:156823d33999 869
<> 149:156823d33999 870 // disable interrupts
<> 149:156823d33999 871 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
<> 149:156823d33999 872 __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
<> 149:156823d33999 873 __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
<> 149:156823d33999 874
<> 149:156823d33999 875 // clear flags
<> 149:156823d33999 876 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_PEF | UART_CLEAR_FEF | UART_CLEAR_OREF);
<> 149:156823d33999 877 volatile uint32_t tmpval = huart->Instance->RDR; // Clear RXNE flag
<> 149:156823d33999 878
<> 149:156823d33999 879 // reset states
<> 149:156823d33999 880 huart->RxXferCount = 0;
<> 149:156823d33999 881 // update handle state
<> 149:156823d33999 882 if(huart->RxState == HAL_UART_STATE_BUSY_TX_RX) {
<> 149:156823d33999 883 huart->RxState = HAL_UART_STATE_BUSY_TX;
<> 149:156823d33999 884 } else {
<> 149:156823d33999 885 huart->RxState = HAL_UART_STATE_READY;
<> 149:156823d33999 886 }
<> 149:156823d33999 887 }
<> 149:156823d33999 888
<> 149:156823d33999 889 #endif
<> 149:156823d33999 890
<> 149:156823d33999 891 #if DEVICE_SERIAL_FC
<> 149:156823d33999 892
<> 149:156823d33999 893 /**
<> 149:156823d33999 894 * Set HW Control Flow
<> 149:156823d33999 895 * @param obj The serial object
<> 149:156823d33999 896 * @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS)
<> 149:156823d33999 897 * @param rxflow Pin for the rxflow
<> 149:156823d33999 898 * @param txflow Pin for the txflow
<> 149:156823d33999 899 */
<> 149:156823d33999 900 void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow)
<> 149:156823d33999 901 {
<> 149:156823d33999 902 struct serial_s *obj_s = SERIAL_S(obj);
<> 149:156823d33999 903
<> 149:156823d33999 904 // Determine the UART to use (UART_1, UART_2, ...)
<> 149:156823d33999 905 UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS);
<> 149:156823d33999 906 UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS);
<> 149:156823d33999 907
<> 149:156823d33999 908 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
<> 149:156823d33999 909 obj_s->uart = (UARTName)pinmap_merge(uart_cts, uart_rts);
<> 149:156823d33999 910 MBED_ASSERT(obj_s->uart != (UARTName)NC);
<> 149:156823d33999 911
<> 149:156823d33999 912 if(type == FlowControlNone) {
<> 149:156823d33999 913 // Disable hardware flow control
<> 149:156823d33999 914 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
<> 149:156823d33999 915 }
<> 149:156823d33999 916 if (type == FlowControlRTS) {
<> 149:156823d33999 917 // Enable RTS
<> 149:156823d33999 918 MBED_ASSERT(uart_rts != (UARTName)NC);
<> 149:156823d33999 919 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS;
<> 149:156823d33999 920 obj_s->pin_rts = rxflow;
<> 149:156823d33999 921 // Enable the pin for RTS function
<> 149:156823d33999 922 pinmap_pinout(rxflow, PinMap_UART_RTS);
<> 149:156823d33999 923 }
<> 149:156823d33999 924 if (type == FlowControlCTS) {
<> 149:156823d33999 925 // Enable CTS
<> 149:156823d33999 926 MBED_ASSERT(uart_cts != (UARTName)NC);
<> 149:156823d33999 927 obj_s->hw_flow_ctl = UART_HWCONTROL_CTS;
<> 149:156823d33999 928 obj_s->pin_cts = txflow;
<> 149:156823d33999 929 // Enable the pin for CTS function
<> 149:156823d33999 930 pinmap_pinout(txflow, PinMap_UART_CTS);
<> 149:156823d33999 931 }
<> 149:156823d33999 932 if (type == FlowControlRTSCTS) {
<> 149:156823d33999 933 // Enable CTS & RTS
<> 149:156823d33999 934 MBED_ASSERT(uart_rts != (UARTName)NC);
<> 149:156823d33999 935 MBED_ASSERT(uart_cts != (UARTName)NC);
<> 149:156823d33999 936 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS_CTS;
<> 149:156823d33999 937 obj_s->pin_rts = rxflow;
<> 149:156823d33999 938 obj_s->pin_cts = txflow;
<> 149:156823d33999 939 // Enable the pin for CTS function
<> 149:156823d33999 940 pinmap_pinout(txflow, PinMap_UART_CTS);
<> 149:156823d33999 941 // Enable the pin for RTS function
<> 149:156823d33999 942 pinmap_pinout(rxflow, PinMap_UART_RTS);
<> 149:156823d33999 943 }
<> 149:156823d33999 944
<> 149:156823d33999 945 init_uart(obj);
<> 149:156823d33999 946 }
<> 149:156823d33999 947
<> 149:156823d33999 948 #endif
<> 149:156823d33999 949
<> 149:156823d33999 950 #endif