Martin Kojtal / mbed-dev

forked

targets/TARGET_STM/TARGET_STM32L1/serial_device.c@167:e84263d55307, 2017-06-21 (annotated)

Committer:
AnnaBridge
Date:
Wed Jun 21 17:46:44 2017 +0100
Revision:
167:e84263d55307
Child:
170:19eb464bc2be
This updates the lib to the mbed lib v 145

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 167:e84263d55307 1 /* mbed Microcontroller Library
AnnaBridge 167:e84263d55307 2 *******************************************************************************
AnnaBridge 167:e84263d55307 3 * Copyright (c) 2014, 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 #include "mbed_assert.h"
AnnaBridge 167:e84263d55307 31 #include "serial_api.h"
AnnaBridge 167:e84263d55307 32 #include "serial_api_hal.h"
AnnaBridge 167:e84263d55307 33
AnnaBridge 167:e84263d55307 34 #if DEVICE_SERIAL
AnnaBridge 167:e84263d55307 35
AnnaBridge 167:e84263d55307 36 #include "cmsis.h"
AnnaBridge 167:e84263d55307 37 #include "pinmap.h"
AnnaBridge 167:e84263d55307 38 #include "mbed_error.h"
AnnaBridge 167:e84263d55307 39 #include <string.h>
AnnaBridge 167:e84263d55307 40 #include "PeripheralPins.h"
AnnaBridge 167:e84263d55307 41
AnnaBridge 167:e84263d55307 42 #define UART_NUM (5)
AnnaBridge 167:e84263d55307 43
AnnaBridge 167:e84263d55307 44 static uint32_t serial_irq_ids[UART_NUM] = {0};
AnnaBridge 167:e84263d55307 45 UART_HandleTypeDef uart_handlers[UART_NUM];
AnnaBridge 167:e84263d55307 46
AnnaBridge 167:e84263d55307 47 static uart_irq_handler irq_handler;
AnnaBridge 167:e84263d55307 48
AnnaBridge 167:e84263d55307 49 int stdio_uart_inited = 0;
AnnaBridge 167:e84263d55307 50 serial_t stdio_uart;
AnnaBridge 167:e84263d55307 51
AnnaBridge 167:e84263d55307 52 void serial_init(serial_t *obj, PinName tx, PinName rx)
AnnaBridge 167:e84263d55307 53 {
AnnaBridge 167:e84263d55307 54 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 55
AnnaBridge 167:e84263d55307 56 // Determine the UART to use (UART_1, UART_2, ...)
AnnaBridge 167:e84263d55307 57 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
AnnaBridge 167:e84263d55307 58 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
AnnaBridge 167:e84263d55307 59
AnnaBridge 167:e84263d55307 60 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
AnnaBridge 167:e84263d55307 61 obj_s->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
AnnaBridge 167:e84263d55307 62 MBED_ASSERT(obj_s->uart != (UARTName)NC);
AnnaBridge 167:e84263d55307 63
AnnaBridge 167:e84263d55307 64 // Enable USART clock
AnnaBridge 167:e84263d55307 65 if (obj_s->uart == UART_1) {
AnnaBridge 167:e84263d55307 66 __HAL_RCC_USART1_FORCE_RESET();
AnnaBridge 167:e84263d55307 67 __HAL_RCC_USART1_RELEASE_RESET();
AnnaBridge 167:e84263d55307 68 __HAL_RCC_USART1_CLK_ENABLE();
AnnaBridge 167:e84263d55307 69 obj_s->index = 0;
AnnaBridge 167:e84263d55307 70 }
AnnaBridge 167:e84263d55307 71 if (obj_s->uart == UART_2) {
AnnaBridge 167:e84263d55307 72 __HAL_RCC_USART2_FORCE_RESET();
AnnaBridge 167:e84263d55307 73 __HAL_RCC_USART2_RELEASE_RESET();
AnnaBridge 167:e84263d55307 74 __HAL_RCC_USART2_CLK_ENABLE();
AnnaBridge 167:e84263d55307 75 obj_s->index = 1;
AnnaBridge 167:e84263d55307 76 }
AnnaBridge 167:e84263d55307 77 if (obj_s->uart == UART_3) {
AnnaBridge 167:e84263d55307 78 __HAL_RCC_USART3_FORCE_RESET();
AnnaBridge 167:e84263d55307 79 __HAL_RCC_USART3_RELEASE_RESET();
AnnaBridge 167:e84263d55307 80 __HAL_RCC_USART3_CLK_ENABLE();
AnnaBridge 167:e84263d55307 81 obj_s->index = 2;
AnnaBridge 167:e84263d55307 82 }
AnnaBridge 167:e84263d55307 83 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 84 if (obj_s->uart == UART_4) {
AnnaBridge 167:e84263d55307 85 __HAL_RCC_UART4_FORCE_RESET();
AnnaBridge 167:e84263d55307 86 __HAL_RCC_UART4_RELEASE_RESET();
AnnaBridge 167:e84263d55307 87 __HAL_RCC_UART4_CLK_ENABLE();
AnnaBridge 167:e84263d55307 88 obj_s->index = 3;
AnnaBridge 167:e84263d55307 89 }
AnnaBridge 167:e84263d55307 90 #endif
AnnaBridge 167:e84263d55307 91 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 92 if (obj_s->uart == UART_5) {
AnnaBridge 167:e84263d55307 93 __HAL_RCC_UART5_FORCE_RESET();
AnnaBridge 167:e84263d55307 94 __HAL_RCC_UART5_RELEASE_RESET();
AnnaBridge 167:e84263d55307 95 __HAL_RCC_UART5_CLK_ENABLE();
AnnaBridge 167:e84263d55307 96 obj_s->index = 4;
AnnaBridge 167:e84263d55307 97 }
AnnaBridge 167:e84263d55307 98 #endif
AnnaBridge 167:e84263d55307 99
AnnaBridge 167:e84263d55307 100 // Configure UART pins
AnnaBridge 167:e84263d55307 101 pinmap_pinout(tx, PinMap_UART_TX);
AnnaBridge 167:e84263d55307 102 pinmap_pinout(rx, PinMap_UART_RX);
AnnaBridge 167:e84263d55307 103
AnnaBridge 167:e84263d55307 104 if (tx != NC) {
AnnaBridge 167:e84263d55307 105 pin_mode(tx, PullUp);
AnnaBridge 167:e84263d55307 106 }
AnnaBridge 167:e84263d55307 107 if (rx != NC) {
AnnaBridge 167:e84263d55307 108 pin_mode(rx, PullUp);
AnnaBridge 167:e84263d55307 109 }
AnnaBridge 167:e84263d55307 110
AnnaBridge 167:e84263d55307 111 // Configure UART
AnnaBridge 167:e84263d55307 112 obj_s->baudrate = 9600;
AnnaBridge 167:e84263d55307 113 obj_s->databits = UART_WORDLENGTH_8B;
AnnaBridge 167:e84263d55307 114 obj_s->stopbits = UART_STOPBITS_1;
AnnaBridge 167:e84263d55307 115 obj_s->parity = UART_PARITY_NONE;
AnnaBridge 167:e84263d55307 116
AnnaBridge 167:e84263d55307 117 #if DEVICE_SERIAL_FC
AnnaBridge 167:e84263d55307 118 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
AnnaBridge 167:e84263d55307 119 #endif
AnnaBridge 167:e84263d55307 120
AnnaBridge 167:e84263d55307 121 obj_s->pin_tx = tx;
AnnaBridge 167:e84263d55307 122 obj_s->pin_rx = rx;
AnnaBridge 167:e84263d55307 123
AnnaBridge 167:e84263d55307 124 init_uart(obj);
AnnaBridge 167:e84263d55307 125
AnnaBridge 167:e84263d55307 126 // For stdio management
AnnaBridge 167:e84263d55307 127 if (obj_s->uart == STDIO_UART) {
AnnaBridge 167:e84263d55307 128 stdio_uart_inited = 1;
AnnaBridge 167:e84263d55307 129 memcpy(&stdio_uart, obj, sizeof(serial_t));
AnnaBridge 167:e84263d55307 130 }
AnnaBridge 167:e84263d55307 131 }
AnnaBridge 167:e84263d55307 132
AnnaBridge 167:e84263d55307 133 void serial_free(serial_t *obj)
AnnaBridge 167:e84263d55307 134 {
AnnaBridge 167:e84263d55307 135 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 136
AnnaBridge 167:e84263d55307 137 // Reset UART and disable clock
AnnaBridge 167:e84263d55307 138 if (obj_s->uart == UART_1) {
AnnaBridge 167:e84263d55307 139 __USART1_FORCE_RESET();
AnnaBridge 167:e84263d55307 140 __USART1_RELEASE_RESET();
AnnaBridge 167:e84263d55307 141 __USART1_CLK_DISABLE();
AnnaBridge 167:e84263d55307 142 }
AnnaBridge 167:e84263d55307 143 if (obj_s->uart == UART_2) {
AnnaBridge 167:e84263d55307 144 __USART2_FORCE_RESET();
AnnaBridge 167:e84263d55307 145 __USART2_RELEASE_RESET();
AnnaBridge 167:e84263d55307 146 __USART2_CLK_DISABLE();
AnnaBridge 167:e84263d55307 147 }
AnnaBridge 167:e84263d55307 148 if (obj_s->uart == UART_3) {
AnnaBridge 167:e84263d55307 149 __USART3_FORCE_RESET();
AnnaBridge 167:e84263d55307 150 __USART3_RELEASE_RESET();
AnnaBridge 167:e84263d55307 151 __USART3_CLK_DISABLE();
AnnaBridge 167:e84263d55307 152 }
AnnaBridge 167:e84263d55307 153
AnnaBridge 167:e84263d55307 154 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 155 if (obj_s->uart == UART_4) {
AnnaBridge 167:e84263d55307 156 __UART4_FORCE_RESET();
AnnaBridge 167:e84263d55307 157 __UART4_RELEASE_RESET();
AnnaBridge 167:e84263d55307 158 __UART4_CLK_DISABLE();
AnnaBridge 167:e84263d55307 159 }
AnnaBridge 167:e84263d55307 160 #endif
AnnaBridge 167:e84263d55307 161 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 162 if (obj_s->uart == UART_5) {
AnnaBridge 167:e84263d55307 163 __UART5_FORCE_RESET();
AnnaBridge 167:e84263d55307 164 __UART5_RELEASE_RESET();
AnnaBridge 167:e84263d55307 165 __UART5_CLK_DISABLE();
AnnaBridge 167:e84263d55307 166 }
AnnaBridge 167:e84263d55307 167 #endif
AnnaBridge 167:e84263d55307 168
AnnaBridge 167:e84263d55307 169 // Configure GPIOs
AnnaBridge 167:e84263d55307 170 pin_function(obj_s->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
AnnaBridge 167:e84263d55307 171 pin_function(obj_s->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
AnnaBridge 167:e84263d55307 172
AnnaBridge 167:e84263d55307 173 serial_irq_ids[obj_s->index] = 0;
AnnaBridge 167:e84263d55307 174 }
AnnaBridge 167:e84263d55307 175
AnnaBridge 167:e84263d55307 176 void serial_baud(serial_t *obj, int baudrate)
AnnaBridge 167:e84263d55307 177 {
AnnaBridge 167:e84263d55307 178 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 179
AnnaBridge 167:e84263d55307 180 obj_s->baudrate = baudrate;
AnnaBridge 167:e84263d55307 181 init_uart(obj);
AnnaBridge 167:e84263d55307 182 }
AnnaBridge 167:e84263d55307 183
AnnaBridge 167:e84263d55307 184 /******************************************************************************
AnnaBridge 167:e84263d55307 185 * INTERRUPTS HANDLING
AnnaBridge 167:e84263d55307 186 ******************************************************************************/
AnnaBridge 167:e84263d55307 187
AnnaBridge 167:e84263d55307 188 static void uart_irq(int id)
AnnaBridge 167:e84263d55307 189 {
AnnaBridge 167:e84263d55307 190 UART_HandleTypeDef * huart = &uart_handlers[id];
AnnaBridge 167:e84263d55307 191
AnnaBridge 167:e84263d55307 192 if (serial_irq_ids[id] != 0) {
AnnaBridge 167:e84263d55307 193 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 194 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
AnnaBridge 167:e84263d55307 195 irq_handler(serial_irq_ids[id], TxIrq);
AnnaBridge 167:e84263d55307 196 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 197 }
AnnaBridge 167:e84263d55307 198 }
AnnaBridge 167:e84263d55307 199 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) {
AnnaBridge 167:e84263d55307 200 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_RXNE) != RESET) {
AnnaBridge 167:e84263d55307 201 irq_handler(serial_irq_ids[id], RxIrq);
AnnaBridge 167:e84263d55307 202 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_RXNE);
AnnaBridge 167:e84263d55307 203 }
AnnaBridge 167:e84263d55307 204 }
AnnaBridge 167:e84263d55307 205 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 167:e84263d55307 206 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 207 volatile uint32_t tmpval = huart->Instance->DR; // Clear ORE flag
AnnaBridge 167:e84263d55307 208 }
AnnaBridge 167:e84263d55307 209 }
AnnaBridge 167:e84263d55307 210 }
AnnaBridge 167:e84263d55307 211 }
AnnaBridge 167:e84263d55307 212
AnnaBridge 167:e84263d55307 213 static void uart1_irq(void)
AnnaBridge 167:e84263d55307 214 {
AnnaBridge 167:e84263d55307 215 uart_irq(0);
AnnaBridge 167:e84263d55307 216 }
AnnaBridge 167:e84263d55307 217
AnnaBridge 167:e84263d55307 218 static void uart2_irq(void)
AnnaBridge 167:e84263d55307 219 {
AnnaBridge 167:e84263d55307 220 uart_irq(1);
AnnaBridge 167:e84263d55307 221 }
AnnaBridge 167:e84263d55307 222
AnnaBridge 167:e84263d55307 223 static void uart3_irq(void)
AnnaBridge 167:e84263d55307 224 {
AnnaBridge 167:e84263d55307 225 uart_irq(2);
AnnaBridge 167:e84263d55307 226 }
AnnaBridge 167:e84263d55307 227
AnnaBridge 167:e84263d55307 228 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 229 static void uart4_irq(void)
AnnaBridge 167:e84263d55307 230 {
AnnaBridge 167:e84263d55307 231 uart_irq(3);
AnnaBridge 167:e84263d55307 232 }
AnnaBridge 167:e84263d55307 233 #endif
AnnaBridge 167:e84263d55307 234 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 235 static void uart5_irq(void)
AnnaBridge 167:e84263d55307 236 {
AnnaBridge 167:e84263d55307 237 uart_irq(4);
AnnaBridge 167:e84263d55307 238 }
AnnaBridge 167:e84263d55307 239 #endif
AnnaBridge 167:e84263d55307 240
AnnaBridge 167:e84263d55307 241 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
AnnaBridge 167:e84263d55307 242 {
AnnaBridge 167:e84263d55307 243 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 244
AnnaBridge 167:e84263d55307 245 irq_handler = handler;
AnnaBridge 167:e84263d55307 246 serial_irq_ids[obj_s->index] = id;
AnnaBridge 167:e84263d55307 247 }
AnnaBridge 167:e84263d55307 248
AnnaBridge 167:e84263d55307 249 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
AnnaBridge 167:e84263d55307 250 {
AnnaBridge 167:e84263d55307 251 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 252 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 253 IRQn_Type irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 254 uint32_t vector = 0;
AnnaBridge 167:e84263d55307 255
AnnaBridge 167:e84263d55307 256 if (obj_s->uart == UART_1) {
AnnaBridge 167:e84263d55307 257 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 258 vector = (uint32_t)&uart1_irq;
AnnaBridge 167:e84263d55307 259 }
AnnaBridge 167:e84263d55307 260
AnnaBridge 167:e84263d55307 261 if (obj_s->uart == UART_2) {
AnnaBridge 167:e84263d55307 262 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 263 vector = (uint32_t)&uart2_irq;
AnnaBridge 167:e84263d55307 264 }
AnnaBridge 167:e84263d55307 265
AnnaBridge 167:e84263d55307 266 if (obj_s->uart == UART_3) {
AnnaBridge 167:e84263d55307 267 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 268 vector = (uint32_t)&uart3_irq;
AnnaBridge 167:e84263d55307 269 }
AnnaBridge 167:e84263d55307 270 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 271 if (obj_s->uart == UART_4) {
AnnaBridge 167:e84263d55307 272 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 273 vector = (uint32_t)&uart4_irq;
AnnaBridge 167:e84263d55307 274 }
AnnaBridge 167:e84263d55307 275 #endif
AnnaBridge 167:e84263d55307 276 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 277 if (obj_s->uart == UART_5) {
AnnaBridge 167:e84263d55307 278 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 279 vector = (uint32_t)&uart5_irq;
AnnaBridge 167:e84263d55307 280 }
AnnaBridge 167:e84263d55307 281 #endif
AnnaBridge 167:e84263d55307 282
AnnaBridge 167:e84263d55307 283 if (enable) {
AnnaBridge 167:e84263d55307 284 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 285 __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 286 } else { // TxIrq
AnnaBridge 167:e84263d55307 287 __HAL_UART_ENABLE_IT(huart, UART_IT_TC);
AnnaBridge 167:e84263d55307 288 }
AnnaBridge 167:e84263d55307 289 NVIC_SetVector(irq_n, vector);
AnnaBridge 167:e84263d55307 290 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 291
AnnaBridge 167:e84263d55307 292 } else { // disable
AnnaBridge 167:e84263d55307 293 int all_disabled = 0;
AnnaBridge 167:e84263d55307 294 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 295 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 296 // Check if TxIrq is disabled too
AnnaBridge 167:e84263d55307 297 if ((huart->Instance->CR1 & USART_CR1_TXEIE) == 0) {
AnnaBridge 167:e84263d55307 298 all_disabled = 1;
AnnaBridge 167:e84263d55307 299 }
AnnaBridge 167:e84263d55307 300 } else { // TxIrq
AnnaBridge 167:e84263d55307 301 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
AnnaBridge 167:e84263d55307 302 // Check if RxIrq is disabled too
AnnaBridge 167:e84263d55307 303 if ((huart->Instance->CR1 & USART_CR1_RXNEIE) == 0) {
AnnaBridge 167:e84263d55307 304 all_disabled = 1;
AnnaBridge 167:e84263d55307 305 }
AnnaBridge 167:e84263d55307 306 }
AnnaBridge 167:e84263d55307 307
AnnaBridge 167:e84263d55307 308 if (all_disabled) {
AnnaBridge 167:e84263d55307 309 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 310 }
AnnaBridge 167:e84263d55307 311 }
AnnaBridge 167:e84263d55307 312 }
AnnaBridge 167:e84263d55307 313
AnnaBridge 167:e84263d55307 314 /******************************************************************************
AnnaBridge 167:e84263d55307 315 * READ/WRITE
AnnaBridge 167:e84263d55307 316 ******************************************************************************/
AnnaBridge 167:e84263d55307 317
AnnaBridge 167:e84263d55307 318 int serial_getc(serial_t *obj)
AnnaBridge 167:e84263d55307 319 {
AnnaBridge 167:e84263d55307 320 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 321 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 322
AnnaBridge 167:e84263d55307 323 while (!serial_readable(obj));
AnnaBridge 167:e84263d55307 324 if (obj_s->databits == UART_WORDLENGTH_8B) {
AnnaBridge 167:e84263d55307 325 return (int)(huart->Instance->DR & (uint8_t)0xFF);
AnnaBridge 167:e84263d55307 326 } else {
AnnaBridge 167:e84263d55307 327 return (int)(huart->Instance->DR & (uint16_t)0x1FF);
AnnaBridge 167:e84263d55307 328 }
AnnaBridge 167:e84263d55307 329 }
AnnaBridge 167:e84263d55307 330
AnnaBridge 167:e84263d55307 331 void serial_putc(serial_t *obj, int c)
AnnaBridge 167:e84263d55307 332 {
AnnaBridge 167:e84263d55307 333 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 334 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 335
AnnaBridge 167:e84263d55307 336 while (!serial_writable(obj));
AnnaBridge 167:e84263d55307 337 if (obj_s->databits == UART_WORDLENGTH_8B) {
AnnaBridge 167:e84263d55307 338 huart->Instance->DR = (uint8_t)(c & (uint8_t)0xFF);
AnnaBridge 167:e84263d55307 339 } else {
AnnaBridge 167:e84263d55307 340 huart->Instance->DR = (uint16_t)(c & (uint16_t)0x1FF);
AnnaBridge 167:e84263d55307 341 }
AnnaBridge 167:e84263d55307 342 }
AnnaBridge 167:e84263d55307 343
AnnaBridge 167:e84263d55307 344 void serial_clear(serial_t *obj)
AnnaBridge 167:e84263d55307 345 {
AnnaBridge 167:e84263d55307 346 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 347 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 348
AnnaBridge 167:e84263d55307 349 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 350 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 351 }
AnnaBridge 167:e84263d55307 352
AnnaBridge 167:e84263d55307 353 void serial_break_set(serial_t *obj)
AnnaBridge 167:e84263d55307 354 {
AnnaBridge 167:e84263d55307 355 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 356 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 357
AnnaBridge 167:e84263d55307 358 HAL_LIN_SendBreak(huart);
AnnaBridge 167:e84263d55307 359 }
AnnaBridge 167:e84263d55307 360
AnnaBridge 167:e84263d55307 361 #if DEVICE_SERIAL_ASYNCH
AnnaBridge 167:e84263d55307 362
AnnaBridge 167:e84263d55307 363 /******************************************************************************
AnnaBridge 167:e84263d55307 364 * LOCAL HELPER FUNCTIONS
AnnaBridge 167:e84263d55307 365 ******************************************************************************/
AnnaBridge 167:e84263d55307 366
AnnaBridge 167:e84263d55307 367 /**
AnnaBridge 167:e84263d55307 368 * Configure the TX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 369 *
AnnaBridge 167:e84263d55307 370 * @param obj The serial object.
AnnaBridge 167:e84263d55307 371 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 372 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 373 */
AnnaBridge 167:e84263d55307 374 static void serial_tx_buffer_set(serial_t *obj, void *tx, int tx_length, uint8_t width)
AnnaBridge 167:e84263d55307 375 {
AnnaBridge 167:e84263d55307 376 (void)width;
AnnaBridge 167:e84263d55307 377
AnnaBridge 167:e84263d55307 378 // Exit if a transmit is already on-going
AnnaBridge 167:e84263d55307 379 if (serial_tx_active(obj)) {
AnnaBridge 167:e84263d55307 380 return;
AnnaBridge 167:e84263d55307 381 }
AnnaBridge 167:e84263d55307 382
AnnaBridge 167:e84263d55307 383 obj->tx_buff.buffer = tx;
AnnaBridge 167:e84263d55307 384 obj->tx_buff.length = tx_length;
AnnaBridge 167:e84263d55307 385 obj->tx_buff.pos = 0;
AnnaBridge 167:e84263d55307 386 }
AnnaBridge 167:e84263d55307 387
AnnaBridge 167:e84263d55307 388 /**
AnnaBridge 167:e84263d55307 389 * Configure the RX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 390 *
AnnaBridge 167:e84263d55307 391 * @param obj The serial object.
AnnaBridge 167:e84263d55307 392 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 393 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 394 */
AnnaBridge 167:e84263d55307 395 static void serial_rx_buffer_set(serial_t *obj, void *rx, int rx_length, uint8_t width)
AnnaBridge 167:e84263d55307 396 {
AnnaBridge 167:e84263d55307 397 (void)width;
AnnaBridge 167:e84263d55307 398
AnnaBridge 167:e84263d55307 399 // Exit if a reception is already on-going
AnnaBridge 167:e84263d55307 400 if (serial_rx_active(obj)) {
AnnaBridge 167:e84263d55307 401 return;
AnnaBridge 167:e84263d55307 402 }
AnnaBridge 167:e84263d55307 403
AnnaBridge 167:e84263d55307 404 obj->rx_buff.buffer = rx;
AnnaBridge 167:e84263d55307 405 obj->rx_buff.length = rx_length;
AnnaBridge 167:e84263d55307 406 obj->rx_buff.pos = 0;
AnnaBridge 167:e84263d55307 407 }
AnnaBridge 167:e84263d55307 408
AnnaBridge 167:e84263d55307 409 /**
AnnaBridge 167:e84263d55307 410 * Configure events
AnnaBridge 167:e84263d55307 411 *
AnnaBridge 167:e84263d55307 412 * @param obj The serial object
AnnaBridge 167:e84263d55307 413 * @param event The logical OR of the events to configure
AnnaBridge 167:e84263d55307 414 * @param enable Set to non-zero to enable events, or zero to disable them
AnnaBridge 167:e84263d55307 415 */
AnnaBridge 167:e84263d55307 416 static void serial_enable_event(serial_t *obj, int event, uint8_t enable)
AnnaBridge 167:e84263d55307 417 {
AnnaBridge 167:e84263d55307 418 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 419
AnnaBridge 167:e84263d55307 420 // Shouldn't have to enable interrupt here, just need to keep track of the requested events.
AnnaBridge 167:e84263d55307 421 if (enable) {
AnnaBridge 167:e84263d55307 422 obj_s->events |= event;
AnnaBridge 167:e84263d55307 423 } else {
AnnaBridge 167:e84263d55307 424 obj_s->events &= ~event;
AnnaBridge 167:e84263d55307 425 }
AnnaBridge 167:e84263d55307 426 }
AnnaBridge 167:e84263d55307 427
AnnaBridge 167:e84263d55307 428
AnnaBridge 167:e84263d55307 429 /**
AnnaBridge 167:e84263d55307 430 * Get index of serial object TX IRQ, relating it to the physical peripheral.
AnnaBridge 167:e84263d55307 431 *
AnnaBridge 167:e84263d55307 432 * @param obj pointer to serial object
AnnaBridge 167:e84263d55307 433 * @return internal NVIC TX IRQ index of U(S)ART peripheral
AnnaBridge 167:e84263d55307 434 */
AnnaBridge 167:e84263d55307 435 static IRQn_Type serial_get_irq_n(serial_t *obj)
AnnaBridge 167:e84263d55307 436 {
AnnaBridge 167:e84263d55307 437 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 438 IRQn_Type irq_n;
AnnaBridge 167:e84263d55307 439
AnnaBridge 167:e84263d55307 440 switch (obj_s->index) {
AnnaBridge 167:e84263d55307 441 case 0:
AnnaBridge 167:e84263d55307 442 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 443 break;
AnnaBridge 167:e84263d55307 444
AnnaBridge 167:e84263d55307 445 case 1:
AnnaBridge 167:e84263d55307 446 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 447 break;
AnnaBridge 167:e84263d55307 448
AnnaBridge 167:e84263d55307 449 case 2:
AnnaBridge 167:e84263d55307 450 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 451 break;
AnnaBridge 167:e84263d55307 452 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 453 case 3:
AnnaBridge 167:e84263d55307 454 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 455 break;
AnnaBridge 167:e84263d55307 456 #endif
AnnaBridge 167:e84263d55307 457 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 458 case 4:
AnnaBridge 167:e84263d55307 459 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 460 break;
AnnaBridge 167:e84263d55307 461 #endif
AnnaBridge 167:e84263d55307 462 default:
AnnaBridge 167:e84263d55307 463 irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 464 }
AnnaBridge 167:e84263d55307 465
AnnaBridge 167:e84263d55307 466 return irq_n;
AnnaBridge 167:e84263d55307 467 }
AnnaBridge 167:e84263d55307 468
AnnaBridge 167:e84263d55307 469 /******************************************************************************
AnnaBridge 167:e84263d55307 470 * MBED API FUNCTIONS
AnnaBridge 167:e84263d55307 471 ******************************************************************************/
AnnaBridge 167:e84263d55307 472
AnnaBridge 167:e84263d55307 473 /**
AnnaBridge 167:e84263d55307 474 * Begin asynchronous TX transfer. The used buffer is specified in the serial
AnnaBridge 167:e84263d55307 475 * object, tx_buff
AnnaBridge 167:e84263d55307 476 *
AnnaBridge 167:e84263d55307 477 * @param obj The serial object
AnnaBridge 167:e84263d55307 478 * @param tx The buffer for sending
AnnaBridge 167:e84263d55307 479 * @param tx_length The number of words to transmit
AnnaBridge 167:e84263d55307 480 * @param tx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 481 * @param handler The serial handler
AnnaBridge 167:e84263d55307 482 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 483 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 484 * @return Returns number of data transfered, or 0 otherwise
AnnaBridge 167:e84263d55307 485 */
AnnaBridge 167:e84263d55307 486 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 487 {
AnnaBridge 167:e84263d55307 488 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 489 (void) hint;
AnnaBridge 167:e84263d55307 490
AnnaBridge 167:e84263d55307 491 // Check buffer is ok
AnnaBridge 167:e84263d55307 492 MBED_ASSERT(tx != (void*)0);
AnnaBridge 167:e84263d55307 493 MBED_ASSERT(tx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 494
AnnaBridge 167:e84263d55307 495 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 496 UART_HandleTypeDef * huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 497
AnnaBridge 167:e84263d55307 498 if (tx_length == 0) {
AnnaBridge 167:e84263d55307 499 return 0;
AnnaBridge 167:e84263d55307 500 }
AnnaBridge 167:e84263d55307 501
AnnaBridge 167:e84263d55307 502 // Set up buffer
AnnaBridge 167:e84263d55307 503 serial_tx_buffer_set(obj, (void *)tx, tx_length, tx_width);
AnnaBridge 167:e84263d55307 504
AnnaBridge 167:e84263d55307 505 // Set up events
AnnaBridge 167:e84263d55307 506 serial_enable_event(obj, SERIAL_EVENT_TX_ALL, 0); // Clear all events
AnnaBridge 167:e84263d55307 507 serial_enable_event(obj, event, 1); // Set only the wanted events
AnnaBridge 167:e84263d55307 508
AnnaBridge 167:e84263d55307 509 // Enable interrupt
AnnaBridge 167:e84263d55307 510 IRQn_Type irq_n = serial_get_irq_n(obj);
AnnaBridge 167:e84263d55307 511 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 512 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 513 NVIC_SetPriority(irq_n, 1);
AnnaBridge 167:e84263d55307 514 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 515 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 516
AnnaBridge 167:e84263d55307 517 // the following function will enable UART_IT_TXE and error interrupts
AnnaBridge 167:e84263d55307 518 if (HAL_UART_Transmit_IT(huart, (uint8_t*)tx, tx_length) != HAL_OK) {
AnnaBridge 167:e84263d55307 519 return 0;
AnnaBridge 167:e84263d55307 520 }
AnnaBridge 167:e84263d55307 521
AnnaBridge 167:e84263d55307 522 return tx_length;
AnnaBridge 167:e84263d55307 523 }
AnnaBridge 167:e84263d55307 524
AnnaBridge 167:e84263d55307 525 /**
AnnaBridge 167:e84263d55307 526 * Begin asynchronous RX transfer (enable interrupt for data collecting)
AnnaBridge 167:e84263d55307 527 * The used buffer is specified in the serial object, rx_buff
AnnaBridge 167:e84263d55307 528 *
AnnaBridge 167:e84263d55307 529 * @param obj The serial object
AnnaBridge 167:e84263d55307 530 * @param rx The buffer for sending
AnnaBridge 167:e84263d55307 531 * @param rx_length The number of words to transmit
AnnaBridge 167:e84263d55307 532 * @param rx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 533 * @param handler The serial handler
AnnaBridge 167:e84263d55307 534 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 535 * @param handler The serial handler
AnnaBridge 167:e84263d55307 536 * @param char_match A character in range 0-254 to be matched
AnnaBridge 167:e84263d55307 537 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 538 */
AnnaBridge 167:e84263d55307 539 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 540 {
AnnaBridge 167:e84263d55307 541 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 542 (void) hint;
AnnaBridge 167:e84263d55307 543
AnnaBridge 167:e84263d55307 544 /* Sanity check arguments */
AnnaBridge 167:e84263d55307 545 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 546 MBED_ASSERT(rx != (void*)0);
AnnaBridge 167:e84263d55307 547 MBED_ASSERT(rx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 548
AnnaBridge 167:e84263d55307 549 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 550 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 551
AnnaBridge 167:e84263d55307 552 serial_enable_event(obj, SERIAL_EVENT_RX_ALL, 0);
AnnaBridge 167:e84263d55307 553 serial_enable_event(obj, event, 1);
AnnaBridge 167:e84263d55307 554
AnnaBridge 167:e84263d55307 555 // set CharMatch
AnnaBridge 167:e84263d55307 556 obj->char_match = char_match;
AnnaBridge 167:e84263d55307 557
AnnaBridge 167:e84263d55307 558 serial_rx_buffer_set(obj, rx, rx_length, rx_width);
AnnaBridge 167:e84263d55307 559
AnnaBridge 167:e84263d55307 560 IRQn_Type irq_n = serial_get_irq_n(obj);
AnnaBridge 167:e84263d55307 561 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 562 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 563 NVIC_SetPriority(irq_n, 0);
AnnaBridge 167:e84263d55307 564 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 565 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 566
AnnaBridge 167:e84263d55307 567 // following HAL function will enable the RXNE interrupt + error interrupts
AnnaBridge 167:e84263d55307 568 HAL_UART_Receive_IT(huart, (uint8_t*)rx, rx_length);
AnnaBridge 167:e84263d55307 569 }
AnnaBridge 167:e84263d55307 570
AnnaBridge 167:e84263d55307 571 /**
AnnaBridge 167:e84263d55307 572 * Attempts to determine if the serial peripheral is already in use for TX
AnnaBridge 167:e84263d55307 573 *
AnnaBridge 167:e84263d55307 574 * @param obj The serial object
AnnaBridge 167:e84263d55307 575 * @return Non-zero if the TX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 576 */
AnnaBridge 167:e84263d55307 577 uint8_t serial_tx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 578 {
AnnaBridge 167:e84263d55307 579 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 580
AnnaBridge 167:e84263d55307 581 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 582 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 583
AnnaBridge 167:e84263d55307 584 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_TX) ? 1 : 0);
AnnaBridge 167:e84263d55307 585 }
AnnaBridge 167:e84263d55307 586
AnnaBridge 167:e84263d55307 587 /**
AnnaBridge 167:e84263d55307 588 * Attempts to determine if the serial peripheral is already in use for RX
AnnaBridge 167:e84263d55307 589 *
AnnaBridge 167:e84263d55307 590 * @param obj The serial object
AnnaBridge 167:e84263d55307 591 * @return Non-zero if the RX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 592 */
AnnaBridge 167:e84263d55307 593 uint8_t serial_rx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 594 {
AnnaBridge 167:e84263d55307 595 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 596
AnnaBridge 167:e84263d55307 597 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 598 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 599
AnnaBridge 167:e84263d55307 600 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_RX) ? 1 : 0);
AnnaBridge 167:e84263d55307 601 }
AnnaBridge 167:e84263d55307 602
AnnaBridge 167:e84263d55307 603 void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 604 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 605 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 606 }
AnnaBridge 167:e84263d55307 607 }
AnnaBridge 167:e84263d55307 608
AnnaBridge 167:e84263d55307 609 void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 610 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 167:e84263d55307 611 volatile uint32_t tmpval = huart->Instance->DR; // Clear PE flag
AnnaBridge 167:e84263d55307 612 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
AnnaBridge 167:e84263d55307 613 volatile uint32_t tmpval = huart->Instance->DR; // Clear FE flag
AnnaBridge 167:e84263d55307 614 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) {
AnnaBridge 167:e84263d55307 615 volatile uint32_t tmpval = huart->Instance->DR; // Clear NE flag
AnnaBridge 167:e84263d55307 616 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 167:e84263d55307 617 volatile uint32_t tmpval = huart->Instance->DR; // Clear ORE flag
AnnaBridge 167:e84263d55307 618 }
AnnaBridge 167:e84263d55307 619 }
AnnaBridge 167:e84263d55307 620
AnnaBridge 167:e84263d55307 621 /**
AnnaBridge 167:e84263d55307 622 * The asynchronous TX and RX handler.
AnnaBridge 167:e84263d55307 623 *
AnnaBridge 167:e84263d55307 624 * @param obj The serial object
AnnaBridge 167:e84263d55307 625 * @return Returns event flags if a TX/RX transfer termination condition was met or 0 otherwise
AnnaBridge 167:e84263d55307 626 */
AnnaBridge 167:e84263d55307 627 int serial_irq_handler_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 628 {
AnnaBridge 167:e84263d55307 629 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 630 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 631
AnnaBridge 167:e84263d55307 632 volatile int return_event = 0;
AnnaBridge 167:e84263d55307 633 uint8_t *buf = (uint8_t*)(obj->rx_buff.buffer);
AnnaBridge 167:e84263d55307 634 uint8_t i = 0;
AnnaBridge 167:e84263d55307 635
AnnaBridge 167:e84263d55307 636 // TX PART:
AnnaBridge 167:e84263d55307 637 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 638 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
AnnaBridge 167:e84263d55307 639 // Return event SERIAL_EVENT_TX_COMPLETE if requested
AnnaBridge 167:e84263d55307 640 if ((obj_s->events & SERIAL_EVENT_TX_COMPLETE ) != 0) {
AnnaBridge 167:e84263d55307 641 return_event |= (SERIAL_EVENT_TX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 642 }
AnnaBridge 167:e84263d55307 643 }
AnnaBridge 167:e84263d55307 644 }
AnnaBridge 167:e84263d55307 645
AnnaBridge 167:e84263d55307 646 // Handle error events
AnnaBridge 167:e84263d55307 647 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 167:e84263d55307 648 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 649 return_event |= (SERIAL_EVENT_RX_PARITY_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 650 }
AnnaBridge 167:e84263d55307 651 }
AnnaBridge 167:e84263d55307 652
AnnaBridge 167:e84263d55307 653 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
AnnaBridge 167:e84263d55307 654 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 655 return_event |= (SERIAL_EVENT_RX_FRAMING_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 656 }
AnnaBridge 167:e84263d55307 657 }
AnnaBridge 167:e84263d55307 658
AnnaBridge 167:e84263d55307 659 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 167:e84263d55307 660 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 661 return_event |= (SERIAL_EVENT_RX_OVERRUN_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 662 }
AnnaBridge 167:e84263d55307 663 }
AnnaBridge 167:e84263d55307 664
AnnaBridge 167:e84263d55307 665 HAL_UART_IRQHandler(huart);
AnnaBridge 167:e84263d55307 666
AnnaBridge 167:e84263d55307 667 // Abort if an error occurs
AnnaBridge 167:e84263d55307 668 if (return_event & SERIAL_EVENT_RX_PARITY_ERROR ||
AnnaBridge 167:e84263d55307 669 return_event & SERIAL_EVENT_RX_FRAMING_ERROR ||
AnnaBridge 167:e84263d55307 670 return_event & SERIAL_EVENT_RX_OVERRUN_ERROR) {
AnnaBridge 167:e84263d55307 671 return return_event;
AnnaBridge 167:e84263d55307 672 }
AnnaBridge 167:e84263d55307 673
AnnaBridge 167:e84263d55307 674 //RX PART
AnnaBridge 167:e84263d55307 675 if (huart->RxXferSize != 0) {
AnnaBridge 167:e84263d55307 676 obj->rx_buff.pos = huart->RxXferSize - huart->RxXferCount;
AnnaBridge 167:e84263d55307 677 }
AnnaBridge 167:e84263d55307 678 if ((huart->RxXferCount == 0) && (obj->rx_buff.pos >= (obj->rx_buff.length - 1))) {
AnnaBridge 167:e84263d55307 679 return_event |= (SERIAL_EVENT_RX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 680 }
AnnaBridge 167:e84263d55307 681
AnnaBridge 167:e84263d55307 682 // Check if char_match is present
AnnaBridge 167:e84263d55307 683 if (obj_s->events & SERIAL_EVENT_RX_CHARACTER_MATCH) {
AnnaBridge 167:e84263d55307 684 if (buf != NULL) {
AnnaBridge 167:e84263d55307 685 for (i = 0; i < obj->rx_buff.pos; i++) {
AnnaBridge 167:e84263d55307 686 if (buf[i] == obj->char_match) {
AnnaBridge 167:e84263d55307 687 obj->rx_buff.pos = i;
AnnaBridge 167:e84263d55307 688 return_event |= (SERIAL_EVENT_RX_CHARACTER_MATCH & obj_s->events);
AnnaBridge 167:e84263d55307 689 serial_rx_abort_asynch(obj);
AnnaBridge 167:e84263d55307 690 break;
AnnaBridge 167:e84263d55307 691 }
AnnaBridge 167:e84263d55307 692 }
AnnaBridge 167:e84263d55307 693 }
AnnaBridge 167:e84263d55307 694 }
AnnaBridge 167:e84263d55307 695
AnnaBridge 167:e84263d55307 696 return return_event;
AnnaBridge 167:e84263d55307 697 }
AnnaBridge 167:e84263d55307 698
AnnaBridge 167:e84263d55307 699 /**
AnnaBridge 167:e84263d55307 700 * Abort the ongoing TX transaction. It disables the enabled interupt for TX and
AnnaBridge 167:e84263d55307 701 * flush TX hardware buffer if TX FIFO is used
AnnaBridge 167:e84263d55307 702 *
AnnaBridge 167:e84263d55307 703 * @param obj The serial object
AnnaBridge 167:e84263d55307 704 */
AnnaBridge 167:e84263d55307 705 void serial_tx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 706 {
AnnaBridge 167:e84263d55307 707 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 708 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 709
AnnaBridge 167:e84263d55307 710 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
AnnaBridge 167:e84263d55307 711 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 712
AnnaBridge 167:e84263d55307 713 // clear flags
AnnaBridge 167:e84263d55307 714 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 715
AnnaBridge 167:e84263d55307 716 // reset states
AnnaBridge 167:e84263d55307 717 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 718 // update handle state
AnnaBridge 167:e84263d55307 719 if(huart->State == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 720 huart->State = HAL_UART_STATE_BUSY_RX;
AnnaBridge 167:e84263d55307 721 } else {
AnnaBridge 167:e84263d55307 722 huart->State = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 723 }
AnnaBridge 167:e84263d55307 724 }
AnnaBridge 167:e84263d55307 725
AnnaBridge 167:e84263d55307 726 /**
AnnaBridge 167:e84263d55307 727 * Abort the ongoing RX transaction It disables the enabled interrupt for RX and
AnnaBridge 167:e84263d55307 728 * flush RX hardware buffer if RX FIFO is used
AnnaBridge 167:e84263d55307 729 *
AnnaBridge 167:e84263d55307 730 * @param obj The serial object
AnnaBridge 167:e84263d55307 731 */
AnnaBridge 167:e84263d55307 732 void serial_rx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 733 {
AnnaBridge 167:e84263d55307 734 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 735 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 736
AnnaBridge 167:e84263d55307 737 // disable interrupts
AnnaBridge 167:e84263d55307 738 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 739 __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
AnnaBridge 167:e84263d55307 740 __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
AnnaBridge 167:e84263d55307 741
AnnaBridge 167:e84263d55307 742 // clear flags
AnnaBridge 167:e84263d55307 743 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_RXNE);
AnnaBridge 167:e84263d55307 744 volatile uint32_t tmpval = huart->Instance->DR; // Clear errors flag
AnnaBridge 167:e84263d55307 745
AnnaBridge 167:e84263d55307 746 // reset states
AnnaBridge 167:e84263d55307 747 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 748 // update handle state
AnnaBridge 167:e84263d55307 749 if(huart->State == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 750 huart->State = HAL_UART_STATE_BUSY_TX;
AnnaBridge 167:e84263d55307 751 } else {
AnnaBridge 167:e84263d55307 752 huart->State = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 753 }
AnnaBridge 167:e84263d55307 754 }
AnnaBridge 167:e84263d55307 755
AnnaBridge 167:e84263d55307 756 #endif
AnnaBridge 167:e84263d55307 757
AnnaBridge 167:e84263d55307 758 #if DEVICE_SERIAL_FC
AnnaBridge 167:e84263d55307 759
AnnaBridge 167:e84263d55307 760 /**
AnnaBridge 167:e84263d55307 761 * Set HW Control Flow
AnnaBridge 167:e84263d55307 762 * @param obj The serial object
AnnaBridge 167:e84263d55307 763 * @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS)
AnnaBridge 167:e84263d55307 764 * @param rxflow Pin for the rxflow
AnnaBridge 167:e84263d55307 765 * @param txflow Pin for the txflow
AnnaBridge 167:e84263d55307 766 */
AnnaBridge 167:e84263d55307 767 void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow)
AnnaBridge 167:e84263d55307 768 {
AnnaBridge 167:e84263d55307 769 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 770
AnnaBridge 167:e84263d55307 771 // Determine the UART to use (UART_1, UART_2, ...)
AnnaBridge 167:e84263d55307 772 UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 773 UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 774
AnnaBridge 167:e84263d55307 775 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
AnnaBridge 167:e84263d55307 776 obj_s->uart = (UARTName)pinmap_merge(uart_cts, uart_rts);
AnnaBridge 167:e84263d55307 777 MBED_ASSERT(obj_s->uart != (UARTName)NC);
AnnaBridge 167:e84263d55307 778
AnnaBridge 167:e84263d55307 779 if(type == FlowControlNone) {
AnnaBridge 167:e84263d55307 780 // Disable hardware flow control
AnnaBridge 167:e84263d55307 781 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
AnnaBridge 167:e84263d55307 782 }
AnnaBridge 167:e84263d55307 783 if (type == FlowControlRTS) {
AnnaBridge 167:e84263d55307 784 // Enable RTS
AnnaBridge 167:e84263d55307 785 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 786 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS;
AnnaBridge 167:e84263d55307 787 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 788 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 789 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 790 }
AnnaBridge 167:e84263d55307 791 if (type == FlowControlCTS) {
AnnaBridge 167:e84263d55307 792 // Enable CTS
AnnaBridge 167:e84263d55307 793 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 794 obj_s->hw_flow_ctl = UART_HWCONTROL_CTS;
AnnaBridge 167:e84263d55307 795 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 796 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 797 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 798 }
AnnaBridge 167:e84263d55307 799 if (type == FlowControlRTSCTS) {
AnnaBridge 167:e84263d55307 800 // Enable CTS & RTS
AnnaBridge 167:e84263d55307 801 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 802 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 803 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS_CTS;
AnnaBridge 167:e84263d55307 804 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 805 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 806 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 807 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 808 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 809 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 810 }
AnnaBridge 167:e84263d55307 811
AnnaBridge 167:e84263d55307 812 init_uart(obj);
AnnaBridge 167:e84263d55307 813 }
AnnaBridge 167:e84263d55307 814
AnnaBridge 167:e84263d55307 815 #endif
AnnaBridge 167:e84263d55307 816
AnnaBridge 167:e84263d55307 817 #endif