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targets/TARGET_STM/TARGET_STM32L4/serial_device.c@167:e84263d55307, 2017-06-21 (annotated)

Committer:
AnnaBridge
Date:
Wed Jun 21 17:46:44 2017 +0100
Revision:
167:e84263d55307
Child:
169:e3b6fe271b81
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) 2015, 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 (6)
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
AnnaBridge 167:e84263d55307 78 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 79 if (obj_s->uart == UART_3) {
AnnaBridge 167:e84263d55307 80 __HAL_RCC_USART3_FORCE_RESET();
AnnaBridge 167:e84263d55307 81 __HAL_RCC_USART3_RELEASE_RESET();
AnnaBridge 167:e84263d55307 82 __HAL_RCC_USART3_CLK_ENABLE();
AnnaBridge 167:e84263d55307 83 obj_s->index = 2;
AnnaBridge 167:e84263d55307 84 }
AnnaBridge 167:e84263d55307 85 #endif
AnnaBridge 167:e84263d55307 86
AnnaBridge 167:e84263d55307 87 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 88 if (obj_s->uart == UART_4) {
AnnaBridge 167:e84263d55307 89 __HAL_RCC_UART4_FORCE_RESET();
AnnaBridge 167:e84263d55307 90 __HAL_RCC_UART4_RELEASE_RESET();
AnnaBridge 167:e84263d55307 91 __HAL_RCC_UART4_CLK_ENABLE();
AnnaBridge 167:e84263d55307 92 obj_s->index = 3;
AnnaBridge 167:e84263d55307 93 }
AnnaBridge 167:e84263d55307 94 #endif
AnnaBridge 167:e84263d55307 95
AnnaBridge 167:e84263d55307 96 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 97 if (obj_s->uart == UART_5) {
AnnaBridge 167:e84263d55307 98 __HAL_RCC_UART5_FORCE_RESET();
AnnaBridge 167:e84263d55307 99 __HAL_RCC_UART5_RELEASE_RESET();
AnnaBridge 167:e84263d55307 100 __HAL_RCC_UART5_CLK_ENABLE();
AnnaBridge 167:e84263d55307 101 obj_s->index = 4;
AnnaBridge 167:e84263d55307 102 }
AnnaBridge 167:e84263d55307 103 #endif
AnnaBridge 167:e84263d55307 104
AnnaBridge 167:e84263d55307 105 #if defined(LPUART1_BASE)
AnnaBridge 167:e84263d55307 106 if (obj_s->uart == LPUART_1) {
AnnaBridge 167:e84263d55307 107 __HAL_RCC_LPUART1_FORCE_RESET();
AnnaBridge 167:e84263d55307 108 __HAL_RCC_LPUART1_RELEASE_RESET();
AnnaBridge 167:e84263d55307 109 __HAL_RCC_LPUART1_CLK_ENABLE();
AnnaBridge 167:e84263d55307 110 obj_s->index = 5;
AnnaBridge 167:e84263d55307 111 }
AnnaBridge 167:e84263d55307 112 #endif
AnnaBridge 167:e84263d55307 113
AnnaBridge 167:e84263d55307 114 // Configure UART pins
AnnaBridge 167:e84263d55307 115 pinmap_pinout(tx, PinMap_UART_TX);
AnnaBridge 167:e84263d55307 116 pinmap_pinout(rx, PinMap_UART_RX);
AnnaBridge 167:e84263d55307 117
AnnaBridge 167:e84263d55307 118 if (tx != NC) {
AnnaBridge 167:e84263d55307 119 pin_mode(tx, PullUp);
AnnaBridge 167:e84263d55307 120 }
AnnaBridge 167:e84263d55307 121 if (rx != NC) {
AnnaBridge 167:e84263d55307 122 pin_mode(rx, PullUp);
AnnaBridge 167:e84263d55307 123 }
AnnaBridge 167:e84263d55307 124
AnnaBridge 167:e84263d55307 125 // Configure UART
AnnaBridge 167:e84263d55307 126 obj_s->baudrate = 9600;
AnnaBridge 167:e84263d55307 127 obj_s->databits = UART_WORDLENGTH_8B;
AnnaBridge 167:e84263d55307 128 obj_s->stopbits = UART_STOPBITS_1;
AnnaBridge 167:e84263d55307 129 obj_s->parity = UART_PARITY_NONE;
AnnaBridge 167:e84263d55307 130
AnnaBridge 167:e84263d55307 131 #if DEVICE_SERIAL_FC
AnnaBridge 167:e84263d55307 132 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
AnnaBridge 167:e84263d55307 133 #endif
AnnaBridge 167:e84263d55307 134
AnnaBridge 167:e84263d55307 135 obj_s->pin_tx = tx;
AnnaBridge 167:e84263d55307 136 obj_s->pin_rx = rx;
AnnaBridge 167:e84263d55307 137
AnnaBridge 167:e84263d55307 138 init_uart(obj);
AnnaBridge 167:e84263d55307 139
AnnaBridge 167:e84263d55307 140 // For stdio management
AnnaBridge 167:e84263d55307 141 if (obj_s->uart == STDIO_UART) {
AnnaBridge 167:e84263d55307 142 stdio_uart_inited = 1;
AnnaBridge 167:e84263d55307 143 memcpy(&stdio_uart, obj, sizeof(serial_t));
AnnaBridge 167:e84263d55307 144 }
AnnaBridge 167:e84263d55307 145 }
AnnaBridge 167:e84263d55307 146
AnnaBridge 167:e84263d55307 147 void serial_free(serial_t *obj)
AnnaBridge 167:e84263d55307 148 {
AnnaBridge 167:e84263d55307 149 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 150
AnnaBridge 167:e84263d55307 151 // Reset UART and disable clock
AnnaBridge 167:e84263d55307 152 if (obj_s->uart == UART_1) {
AnnaBridge 167:e84263d55307 153 __HAL_RCC_USART1_FORCE_RESET();
AnnaBridge 167:e84263d55307 154 __HAL_RCC_USART1_RELEASE_RESET();
AnnaBridge 167:e84263d55307 155 __HAL_RCC_USART1_CLK_DISABLE();
AnnaBridge 167:e84263d55307 156 }
AnnaBridge 167:e84263d55307 157
AnnaBridge 167:e84263d55307 158 if (obj_s->uart == UART_2) {
AnnaBridge 167:e84263d55307 159 __HAL_RCC_USART2_FORCE_RESET();
AnnaBridge 167:e84263d55307 160 __HAL_RCC_USART2_RELEASE_RESET();
AnnaBridge 167:e84263d55307 161 __HAL_RCC_USART2_CLK_DISABLE();
AnnaBridge 167:e84263d55307 162 }
AnnaBridge 167:e84263d55307 163
AnnaBridge 167:e84263d55307 164 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 165 if (obj_s->uart == UART_3) {
AnnaBridge 167:e84263d55307 166 __HAL_RCC_USART3_FORCE_RESET();
AnnaBridge 167:e84263d55307 167 __HAL_RCC_USART3_RELEASE_RESET();
AnnaBridge 167:e84263d55307 168 __HAL_RCC_USART3_CLK_DISABLE();
AnnaBridge 167:e84263d55307 169 }
AnnaBridge 167:e84263d55307 170 #endif
AnnaBridge 167:e84263d55307 171
AnnaBridge 167:e84263d55307 172 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 173 if (obj_s->uart == UART_4) {
AnnaBridge 167:e84263d55307 174 __HAL_RCC_UART4_FORCE_RESET();
AnnaBridge 167:e84263d55307 175 __HAL_RCC_UART4_RELEASE_RESET();
AnnaBridge 167:e84263d55307 176 __HAL_RCC_UART4_CLK_DISABLE();
AnnaBridge 167:e84263d55307 177 }
AnnaBridge 167:e84263d55307 178 #endif
AnnaBridge 167:e84263d55307 179
AnnaBridge 167:e84263d55307 180 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 181 if (obj_s->uart == UART_5) {
AnnaBridge 167:e84263d55307 182 __HAL_RCC_UART5_FORCE_RESET();
AnnaBridge 167:e84263d55307 183 __HAL_RCC_UART5_RELEASE_RESET();
AnnaBridge 167:e84263d55307 184 __HAL_RCC_UART5_CLK_DISABLE();
AnnaBridge 167:e84263d55307 185 }
AnnaBridge 167:e84263d55307 186 #endif
AnnaBridge 167:e84263d55307 187
AnnaBridge 167:e84263d55307 188 #if defined(LPUART1_BASE)
AnnaBridge 167:e84263d55307 189 if (obj_s->uart == LPUART_1) {
AnnaBridge 167:e84263d55307 190 __HAL_RCC_LPUART1_FORCE_RESET();
AnnaBridge 167:e84263d55307 191 __HAL_RCC_LPUART1_RELEASE_RESET();
AnnaBridge 167:e84263d55307 192 __HAL_RCC_LPUART1_CLK_DISABLE();
AnnaBridge 167:e84263d55307 193 }
AnnaBridge 167:e84263d55307 194 #endif
AnnaBridge 167:e84263d55307 195
AnnaBridge 167:e84263d55307 196 // Configure GPIOs
AnnaBridge 167:e84263d55307 197 pin_function(obj_s->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
AnnaBridge 167:e84263d55307 198 pin_function(obj_s->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
AnnaBridge 167:e84263d55307 199
AnnaBridge 167:e84263d55307 200 serial_irq_ids[obj_s->index] = 0;
AnnaBridge 167:e84263d55307 201 }
AnnaBridge 167:e84263d55307 202
AnnaBridge 167:e84263d55307 203 void serial_baud(serial_t *obj, int baudrate)
AnnaBridge 167:e84263d55307 204 {
AnnaBridge 167:e84263d55307 205 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 206
AnnaBridge 167:e84263d55307 207 obj_s->baudrate = baudrate;
AnnaBridge 167:e84263d55307 208 init_uart(obj);
AnnaBridge 167:e84263d55307 209 }
AnnaBridge 167:e84263d55307 210
AnnaBridge 167:e84263d55307 211 /******************************************************************************
AnnaBridge 167:e84263d55307 212 * INTERRUPTS HANDLING
AnnaBridge 167:e84263d55307 213 ******************************************************************************/
AnnaBridge 167:e84263d55307 214
AnnaBridge 167:e84263d55307 215 static void uart_irq(int id)
AnnaBridge 167:e84263d55307 216 {
AnnaBridge 167:e84263d55307 217 UART_HandleTypeDef * huart = &uart_handlers[id];
AnnaBridge 167:e84263d55307 218
AnnaBridge 167:e84263d55307 219 if (serial_irq_ids[id] != 0) {
AnnaBridge 167:e84263d55307 220 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 221 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
AnnaBridge 167:e84263d55307 222 irq_handler(serial_irq_ids[id], TxIrq);
AnnaBridge 167:e84263d55307 223 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 224 }
AnnaBridge 167:e84263d55307 225 }
AnnaBridge 167:e84263d55307 226 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) {
AnnaBridge 167:e84263d55307 227 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_RXNE) != RESET) {
AnnaBridge 167:e84263d55307 228 irq_handler(serial_irq_ids[id], RxIrq);
AnnaBridge 167:e84263d55307 229 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_RXNE);
AnnaBridge 167:e84263d55307 230 }
AnnaBridge 167:e84263d55307 231 }
AnnaBridge 167:e84263d55307 232 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 167:e84263d55307 233 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 234 volatile uint32_t tmpval = huart->Instance->RDR; // Clear ORE flag
AnnaBridge 167:e84263d55307 235 }
AnnaBridge 167:e84263d55307 236 }
AnnaBridge 167:e84263d55307 237 }
AnnaBridge 167:e84263d55307 238 }
AnnaBridge 167:e84263d55307 239
AnnaBridge 167:e84263d55307 240 static void uart1_irq(void)
AnnaBridge 167:e84263d55307 241 {
AnnaBridge 167:e84263d55307 242 uart_irq(0);
AnnaBridge 167:e84263d55307 243 }
AnnaBridge 167:e84263d55307 244
AnnaBridge 167:e84263d55307 245 static void uart2_irq(void)
AnnaBridge 167:e84263d55307 246 {
AnnaBridge 167:e84263d55307 247 uart_irq(1);
AnnaBridge 167:e84263d55307 248 }
AnnaBridge 167:e84263d55307 249
AnnaBridge 167:e84263d55307 250 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 251 static void uart3_irq(void)
AnnaBridge 167:e84263d55307 252 {
AnnaBridge 167:e84263d55307 253 uart_irq(2);
AnnaBridge 167:e84263d55307 254 }
AnnaBridge 167:e84263d55307 255 #endif
AnnaBridge 167:e84263d55307 256
AnnaBridge 167:e84263d55307 257 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 258 static void uart4_irq(void)
AnnaBridge 167:e84263d55307 259 {
AnnaBridge 167:e84263d55307 260 uart_irq(3);
AnnaBridge 167:e84263d55307 261 }
AnnaBridge 167:e84263d55307 262 #endif
AnnaBridge 167:e84263d55307 263
AnnaBridge 167:e84263d55307 264 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 265 static void uart5_irq(void)
AnnaBridge 167:e84263d55307 266 {
AnnaBridge 167:e84263d55307 267 uart_irq(4);
AnnaBridge 167:e84263d55307 268 }
AnnaBridge 167:e84263d55307 269 #endif
AnnaBridge 167:e84263d55307 270
AnnaBridge 167:e84263d55307 271 #if defined(LPUART1_BASE)
AnnaBridge 167:e84263d55307 272 static void lpuart1_irq(void)
AnnaBridge 167:e84263d55307 273 {
AnnaBridge 167:e84263d55307 274 uart_irq(5);
AnnaBridge 167:e84263d55307 275 }
AnnaBridge 167:e84263d55307 276 #endif
AnnaBridge 167:e84263d55307 277
AnnaBridge 167:e84263d55307 278 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
AnnaBridge 167:e84263d55307 279 {
AnnaBridge 167:e84263d55307 280 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 281
AnnaBridge 167:e84263d55307 282 irq_handler = handler;
AnnaBridge 167:e84263d55307 283 serial_irq_ids[obj_s->index] = id;
AnnaBridge 167:e84263d55307 284 }
AnnaBridge 167:e84263d55307 285
AnnaBridge 167:e84263d55307 286 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
AnnaBridge 167:e84263d55307 287 {
AnnaBridge 167:e84263d55307 288 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 289 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 290 IRQn_Type irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 291 uint32_t vector = 0;
AnnaBridge 167:e84263d55307 292
AnnaBridge 167:e84263d55307 293 if (obj_s->uart == UART_1) {
AnnaBridge 167:e84263d55307 294 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 295 vector = (uint32_t)&uart1_irq;
AnnaBridge 167:e84263d55307 296 }
AnnaBridge 167:e84263d55307 297
AnnaBridge 167:e84263d55307 298 if (obj_s->uart == UART_2) {
AnnaBridge 167:e84263d55307 299 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 300 vector = (uint32_t)&uart2_irq;
AnnaBridge 167:e84263d55307 301 }
AnnaBridge 167:e84263d55307 302 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 303 if (obj_s->uart == UART_3) {
AnnaBridge 167:e84263d55307 304 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 305 vector = (uint32_t)&uart3_irq;
AnnaBridge 167:e84263d55307 306 }
AnnaBridge 167:e84263d55307 307 #endif
AnnaBridge 167:e84263d55307 308 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 309 if (obj_s->uart == UART_4) {
AnnaBridge 167:e84263d55307 310 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 311 vector = (uint32_t)&uart4_irq;
AnnaBridge 167:e84263d55307 312 }
AnnaBridge 167:e84263d55307 313 #endif
AnnaBridge 167:e84263d55307 314
AnnaBridge 167:e84263d55307 315 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 316 if (obj_s->uart == UART_5) {
AnnaBridge 167:e84263d55307 317 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 318 vector = (uint32_t)&uart5_irq;
AnnaBridge 167:e84263d55307 319 }
AnnaBridge 167:e84263d55307 320 #endif
AnnaBridge 167:e84263d55307 321
AnnaBridge 167:e84263d55307 322 #if defined(LPUART1_BASE)
AnnaBridge 167:e84263d55307 323 if (obj_s->uart == LPUART_1) {
AnnaBridge 167:e84263d55307 324 irq_n = LPUART1_IRQn;
AnnaBridge 167:e84263d55307 325 vector = (uint32_t)&lpuart1_irq;
AnnaBridge 167:e84263d55307 326 }
AnnaBridge 167:e84263d55307 327 #endif
AnnaBridge 167:e84263d55307 328
AnnaBridge 167:e84263d55307 329 if (enable) {
AnnaBridge 167:e84263d55307 330 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 331 __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 332 } else { // TxIrq
AnnaBridge 167:e84263d55307 333 __HAL_UART_ENABLE_IT(huart, UART_IT_TC);
AnnaBridge 167:e84263d55307 334 }
AnnaBridge 167:e84263d55307 335 NVIC_SetVector(irq_n, vector);
AnnaBridge 167:e84263d55307 336 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 337
AnnaBridge 167:e84263d55307 338 } else { // disable
AnnaBridge 167:e84263d55307 339 int all_disabled = 0;
AnnaBridge 167:e84263d55307 340 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 341 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 342 // Check if TxIrq is disabled too
AnnaBridge 167:e84263d55307 343 if ((huart->Instance->CR1 & USART_CR1_TXEIE) == 0) {
AnnaBridge 167:e84263d55307 344 all_disabled = 1;
AnnaBridge 167:e84263d55307 345 }
AnnaBridge 167:e84263d55307 346 } else { // TxIrq
AnnaBridge 167:e84263d55307 347 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
AnnaBridge 167:e84263d55307 348 // Check if RxIrq is disabled too
AnnaBridge 167:e84263d55307 349 if ((huart->Instance->CR1 & USART_CR1_RXNEIE) == 0) {
AnnaBridge 167:e84263d55307 350 all_disabled = 1;
AnnaBridge 167:e84263d55307 351 }
AnnaBridge 167:e84263d55307 352 }
AnnaBridge 167:e84263d55307 353
AnnaBridge 167:e84263d55307 354 if (all_disabled) {
AnnaBridge 167:e84263d55307 355 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 356 }
AnnaBridge 167:e84263d55307 357 }
AnnaBridge 167:e84263d55307 358 }
AnnaBridge 167:e84263d55307 359
AnnaBridge 167:e84263d55307 360 /******************************************************************************
AnnaBridge 167:e84263d55307 361 * READ/WRITE
AnnaBridge 167:e84263d55307 362 ******************************************************************************/
AnnaBridge 167:e84263d55307 363
AnnaBridge 167:e84263d55307 364 int serial_getc(serial_t *obj)
AnnaBridge 167:e84263d55307 365 {
AnnaBridge 167:e84263d55307 366 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 367 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 368
AnnaBridge 167:e84263d55307 369 while (!serial_readable(obj));
AnnaBridge 167:e84263d55307 370 if (obj_s->databits == UART_WORDLENGTH_8B) {
AnnaBridge 167:e84263d55307 371 return (int)(huart->Instance->RDR & (uint8_t)0xFF);
AnnaBridge 167:e84263d55307 372 } else {
AnnaBridge 167:e84263d55307 373 return (int)(huart->Instance->RDR & (uint16_t)0x1FF);
AnnaBridge 167:e84263d55307 374 }
AnnaBridge 167:e84263d55307 375 }
AnnaBridge 167:e84263d55307 376
AnnaBridge 167:e84263d55307 377 void serial_putc(serial_t *obj, int c)
AnnaBridge 167:e84263d55307 378 {
AnnaBridge 167:e84263d55307 379 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 380 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 381
AnnaBridge 167:e84263d55307 382 while (!serial_writable(obj));
AnnaBridge 167:e84263d55307 383 if (obj_s->databits == UART_WORDLENGTH_8B) {
AnnaBridge 167:e84263d55307 384 huart->Instance->TDR = (uint8_t)(c & (uint8_t)0xFF);
AnnaBridge 167:e84263d55307 385 } else {
AnnaBridge 167:e84263d55307 386 huart->Instance->TDR = (uint16_t)(c & (uint16_t)0x1FF);
AnnaBridge 167:e84263d55307 387 }
AnnaBridge 167:e84263d55307 388 }
AnnaBridge 167:e84263d55307 389
AnnaBridge 167:e84263d55307 390 void serial_clear(serial_t *obj)
AnnaBridge 167:e84263d55307 391 {
AnnaBridge 167:e84263d55307 392 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 393 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 394
AnnaBridge 167:e84263d55307 395 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 396 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 397 }
AnnaBridge 167:e84263d55307 398
AnnaBridge 167:e84263d55307 399 void serial_break_set(serial_t *obj)
AnnaBridge 167:e84263d55307 400 {
AnnaBridge 167:e84263d55307 401 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 402 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 403
AnnaBridge 167:e84263d55307 404 HAL_LIN_SendBreak(huart);
AnnaBridge 167:e84263d55307 405 }
AnnaBridge 167:e84263d55307 406
AnnaBridge 167:e84263d55307 407 #if DEVICE_SERIAL_ASYNCH
AnnaBridge 167:e84263d55307 408
AnnaBridge 167:e84263d55307 409 /******************************************************************************
AnnaBridge 167:e84263d55307 410 * LOCAL HELPER FUNCTIONS
AnnaBridge 167:e84263d55307 411 ******************************************************************************/
AnnaBridge 167:e84263d55307 412
AnnaBridge 167:e84263d55307 413 /**
AnnaBridge 167:e84263d55307 414 * Configure the TX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 415 *
AnnaBridge 167:e84263d55307 416 * @param obj The serial object.
AnnaBridge 167:e84263d55307 417 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 418 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 419 */
AnnaBridge 167:e84263d55307 420 static void serial_tx_buffer_set(serial_t *obj, void *tx, int tx_length, uint8_t width)
AnnaBridge 167:e84263d55307 421 {
AnnaBridge 167:e84263d55307 422 (void)width;
AnnaBridge 167:e84263d55307 423
AnnaBridge 167:e84263d55307 424 // Exit if a transmit is already on-going
AnnaBridge 167:e84263d55307 425 if (serial_tx_active(obj)) {
AnnaBridge 167:e84263d55307 426 return;
AnnaBridge 167:e84263d55307 427 }
AnnaBridge 167:e84263d55307 428
AnnaBridge 167:e84263d55307 429 obj->tx_buff.buffer = tx;
AnnaBridge 167:e84263d55307 430 obj->tx_buff.length = tx_length;
AnnaBridge 167:e84263d55307 431 obj->tx_buff.pos = 0;
AnnaBridge 167:e84263d55307 432 }
AnnaBridge 167:e84263d55307 433
AnnaBridge 167:e84263d55307 434 /**
AnnaBridge 167:e84263d55307 435 * Configure the RX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 436 *
AnnaBridge 167:e84263d55307 437 * @param obj The serial object.
AnnaBridge 167:e84263d55307 438 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 439 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 440 */
AnnaBridge 167:e84263d55307 441 static void serial_rx_buffer_set(serial_t *obj, void *rx, int rx_length, uint8_t width)
AnnaBridge 167:e84263d55307 442 {
AnnaBridge 167:e84263d55307 443 (void)width;
AnnaBridge 167:e84263d55307 444
AnnaBridge 167:e84263d55307 445 // Exit if a reception is already on-going
AnnaBridge 167:e84263d55307 446 if (serial_rx_active(obj)) {
AnnaBridge 167:e84263d55307 447 return;
AnnaBridge 167:e84263d55307 448 }
AnnaBridge 167:e84263d55307 449
AnnaBridge 167:e84263d55307 450 obj->rx_buff.buffer = rx;
AnnaBridge 167:e84263d55307 451 obj->rx_buff.length = rx_length;
AnnaBridge 167:e84263d55307 452 obj->rx_buff.pos = 0;
AnnaBridge 167:e84263d55307 453 }
AnnaBridge 167:e84263d55307 454
AnnaBridge 167:e84263d55307 455 /**
AnnaBridge 167:e84263d55307 456 * Configure events
AnnaBridge 167:e84263d55307 457 *
AnnaBridge 167:e84263d55307 458 * @param obj The serial object
AnnaBridge 167:e84263d55307 459 * @param event The logical OR of the events to configure
AnnaBridge 167:e84263d55307 460 * @param enable Set to non-zero to enable events, or zero to disable them
AnnaBridge 167:e84263d55307 461 */
AnnaBridge 167:e84263d55307 462 static void serial_enable_event(serial_t *obj, int event, uint8_t enable)
AnnaBridge 167:e84263d55307 463 {
AnnaBridge 167:e84263d55307 464 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 465
AnnaBridge 167:e84263d55307 466 // Shouldn't have to enable interrupt here, just need to keep track of the requested events.
AnnaBridge 167:e84263d55307 467 if (enable) {
AnnaBridge 167:e84263d55307 468 obj_s->events |= event;
AnnaBridge 167:e84263d55307 469 } else {
AnnaBridge 167:e84263d55307 470 obj_s->events &= ~event;
AnnaBridge 167:e84263d55307 471 }
AnnaBridge 167:e84263d55307 472 }
AnnaBridge 167:e84263d55307 473
AnnaBridge 167:e84263d55307 474
AnnaBridge 167:e84263d55307 475 /**
AnnaBridge 167:e84263d55307 476 * Get index of serial object TX IRQ, relating it to the physical peripheral.
AnnaBridge 167:e84263d55307 477 *
AnnaBridge 167:e84263d55307 478 * @param obj pointer to serial object
AnnaBridge 167:e84263d55307 479 * @return internal NVIC TX IRQ index of U(S)ART peripheral
AnnaBridge 167:e84263d55307 480 */
AnnaBridge 167:e84263d55307 481 static IRQn_Type serial_get_irq_n(serial_t *obj)
AnnaBridge 167:e84263d55307 482 {
AnnaBridge 167:e84263d55307 483 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 484 IRQn_Type irq_n;
AnnaBridge 167:e84263d55307 485
AnnaBridge 167:e84263d55307 486 switch (obj_s->index) {
AnnaBridge 167:e84263d55307 487 case 0:
AnnaBridge 167:e84263d55307 488 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 489 break;
AnnaBridge 167:e84263d55307 490
AnnaBridge 167:e84263d55307 491 case 1:
AnnaBridge 167:e84263d55307 492 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 493 break;
AnnaBridge 167:e84263d55307 494
AnnaBridge 167:e84263d55307 495 case 2:
AnnaBridge 167:e84263d55307 496 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 497 break;
AnnaBridge 167:e84263d55307 498 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 499 case 3:
AnnaBridge 167:e84263d55307 500 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 501 break;
AnnaBridge 167:e84263d55307 502 #endif
AnnaBridge 167:e84263d55307 503 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 504 case 4:
AnnaBridge 167:e84263d55307 505 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 506 break;
AnnaBridge 167:e84263d55307 507 #endif
AnnaBridge 167:e84263d55307 508 #if defined(LPUART1_BASE)
AnnaBridge 167:e84263d55307 509 case 5:
AnnaBridge 167:e84263d55307 510 irq_n = LPUART1_IRQn;
AnnaBridge 167:e84263d55307 511 break;
AnnaBridge 167:e84263d55307 512 #endif
AnnaBridge 167:e84263d55307 513
AnnaBridge 167:e84263d55307 514 default:
AnnaBridge 167:e84263d55307 515 irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 516 }
AnnaBridge 167:e84263d55307 517
AnnaBridge 167:e84263d55307 518 return irq_n;
AnnaBridge 167:e84263d55307 519 }
AnnaBridge 167:e84263d55307 520
AnnaBridge 167:e84263d55307 521 /******************************************************************************
AnnaBridge 167:e84263d55307 522 * MBED API FUNCTIONS
AnnaBridge 167:e84263d55307 523 ******************************************************************************/
AnnaBridge 167:e84263d55307 524
AnnaBridge 167:e84263d55307 525 /**
AnnaBridge 167:e84263d55307 526 * Begin asynchronous TX transfer. The used buffer is specified in the serial
AnnaBridge 167:e84263d55307 527 * object, tx_buff
AnnaBridge 167:e84263d55307 528 *
AnnaBridge 167:e84263d55307 529 * @param obj The serial object
AnnaBridge 167:e84263d55307 530 * @param tx The buffer for sending
AnnaBridge 167:e84263d55307 531 * @param tx_length The number of words to transmit
AnnaBridge 167:e84263d55307 532 * @param tx_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 hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 536 * @return Returns number of data transfered, or 0 otherwise
AnnaBridge 167:e84263d55307 537 */
AnnaBridge 167:e84263d55307 538 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 539 {
AnnaBridge 167:e84263d55307 540 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 541 (void) hint;
AnnaBridge 167:e84263d55307 542
AnnaBridge 167:e84263d55307 543 // Check buffer is ok
AnnaBridge 167:e84263d55307 544 MBED_ASSERT(tx != (void*)0);
AnnaBridge 167:e84263d55307 545 MBED_ASSERT(tx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 546
AnnaBridge 167:e84263d55307 547 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 548 UART_HandleTypeDef * huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 549
AnnaBridge 167:e84263d55307 550 if (tx_length == 0) {
AnnaBridge 167:e84263d55307 551 return 0;
AnnaBridge 167:e84263d55307 552 }
AnnaBridge 167:e84263d55307 553
AnnaBridge 167:e84263d55307 554 // Set up buffer
AnnaBridge 167:e84263d55307 555 serial_tx_buffer_set(obj, (void *)tx, tx_length, tx_width);
AnnaBridge 167:e84263d55307 556
AnnaBridge 167:e84263d55307 557 // Set up events
AnnaBridge 167:e84263d55307 558 serial_enable_event(obj, SERIAL_EVENT_TX_ALL, 0); // Clear all events
AnnaBridge 167:e84263d55307 559 serial_enable_event(obj, event, 1); // Set only the wanted events
AnnaBridge 167:e84263d55307 560
AnnaBridge 167:e84263d55307 561 // Enable interrupt
AnnaBridge 167:e84263d55307 562 IRQn_Type irq_n = serial_get_irq_n(obj);
AnnaBridge 167:e84263d55307 563 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 564 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 565 NVIC_SetPriority(irq_n, 1);
AnnaBridge 167:e84263d55307 566 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 567 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 568
AnnaBridge 167:e84263d55307 569 // the following function will enable UART_IT_TXE and error interrupts
AnnaBridge 167:e84263d55307 570 if (HAL_UART_Transmit_IT(huart, (uint8_t*)tx, tx_length) != HAL_OK) {
AnnaBridge 167:e84263d55307 571 return 0;
AnnaBridge 167:e84263d55307 572 }
AnnaBridge 167:e84263d55307 573
AnnaBridge 167:e84263d55307 574 return tx_length;
AnnaBridge 167:e84263d55307 575 }
AnnaBridge 167:e84263d55307 576
AnnaBridge 167:e84263d55307 577 /**
AnnaBridge 167:e84263d55307 578 * Begin asynchronous RX transfer (enable interrupt for data collecting)
AnnaBridge 167:e84263d55307 579 * The used buffer is specified in the serial object, rx_buff
AnnaBridge 167:e84263d55307 580 *
AnnaBridge 167:e84263d55307 581 * @param obj The serial object
AnnaBridge 167:e84263d55307 582 * @param rx The buffer for sending
AnnaBridge 167:e84263d55307 583 * @param rx_length The number of words to transmit
AnnaBridge 167:e84263d55307 584 * @param rx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 585 * @param handler The serial handler
AnnaBridge 167:e84263d55307 586 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 587 * @param handler The serial handler
AnnaBridge 167:e84263d55307 588 * @param char_match A character in range 0-254 to be matched
AnnaBridge 167:e84263d55307 589 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 590 */
AnnaBridge 167:e84263d55307 591 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 592 {
AnnaBridge 167:e84263d55307 593 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 594 (void) hint;
AnnaBridge 167:e84263d55307 595
AnnaBridge 167:e84263d55307 596 /* Sanity check arguments */
AnnaBridge 167:e84263d55307 597 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 598 MBED_ASSERT(rx != (void*)0);
AnnaBridge 167:e84263d55307 599 MBED_ASSERT(rx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 600
AnnaBridge 167:e84263d55307 601 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 602 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 603
AnnaBridge 167:e84263d55307 604 serial_enable_event(obj, SERIAL_EVENT_RX_ALL, 0);
AnnaBridge 167:e84263d55307 605 serial_enable_event(obj, event, 1);
AnnaBridge 167:e84263d55307 606
AnnaBridge 167:e84263d55307 607 // set CharMatch
AnnaBridge 167:e84263d55307 608 obj->char_match = char_match;
AnnaBridge 167:e84263d55307 609
AnnaBridge 167:e84263d55307 610 serial_rx_buffer_set(obj, rx, rx_length, rx_width);
AnnaBridge 167:e84263d55307 611
AnnaBridge 167:e84263d55307 612 IRQn_Type irq_n = serial_get_irq_n(obj);
AnnaBridge 167:e84263d55307 613 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 614 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 615 NVIC_SetPriority(irq_n, 0);
AnnaBridge 167:e84263d55307 616 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 617 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 618
AnnaBridge 167:e84263d55307 619 // following HAL function will enable the RXNE interrupt + error interrupts
AnnaBridge 167:e84263d55307 620 HAL_UART_Receive_IT(huart, (uint8_t*)rx, rx_length);
AnnaBridge 167:e84263d55307 621 }
AnnaBridge 167:e84263d55307 622
AnnaBridge 167:e84263d55307 623 /**
AnnaBridge 167:e84263d55307 624 * Attempts to determine if the serial peripheral is already in use for TX
AnnaBridge 167:e84263d55307 625 *
AnnaBridge 167:e84263d55307 626 * @param obj The serial object
AnnaBridge 167:e84263d55307 627 * @return Non-zero if the TX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 628 */
AnnaBridge 167:e84263d55307 629 uint8_t serial_tx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 630 {
AnnaBridge 167:e84263d55307 631 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 632
AnnaBridge 167:e84263d55307 633 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 634 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 635
AnnaBridge 167:e84263d55307 636 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_TX) ? 1 : 0);
AnnaBridge 167:e84263d55307 637 }
AnnaBridge 167:e84263d55307 638
AnnaBridge 167:e84263d55307 639 /**
AnnaBridge 167:e84263d55307 640 * Attempts to determine if the serial peripheral is already in use for RX
AnnaBridge 167:e84263d55307 641 *
AnnaBridge 167:e84263d55307 642 * @param obj The serial object
AnnaBridge 167:e84263d55307 643 * @return Non-zero if the RX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 644 */
AnnaBridge 167:e84263d55307 645 uint8_t serial_rx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 646 {
AnnaBridge 167:e84263d55307 647 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 648
AnnaBridge 167:e84263d55307 649 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 650 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 651
AnnaBridge 167:e84263d55307 652 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_RX) ? 1 : 0);
AnnaBridge 167:e84263d55307 653 }
AnnaBridge 167:e84263d55307 654
AnnaBridge 167:e84263d55307 655 void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 656 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 657 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 658 }
AnnaBridge 167:e84263d55307 659 }
AnnaBridge 167:e84263d55307 660
AnnaBridge 167:e84263d55307 661 void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 662 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 167:e84263d55307 663 volatile uint32_t tmpval = huart->Instance->RDR; // Clear PE flag
AnnaBridge 167:e84263d55307 664 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
AnnaBridge 167:e84263d55307 665 volatile uint32_t tmpval = huart->Instance->RDR; // Clear FE flag
AnnaBridge 167:e84263d55307 666 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) {
AnnaBridge 167:e84263d55307 667 volatile uint32_t tmpval = huart->Instance->RDR; // Clear NE flag
AnnaBridge 167:e84263d55307 668 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 167:e84263d55307 669 volatile uint32_t tmpval = huart->Instance->RDR; // Clear ORE flag
AnnaBridge 167:e84263d55307 670 }
AnnaBridge 167:e84263d55307 671 }
AnnaBridge 167:e84263d55307 672
AnnaBridge 167:e84263d55307 673 /**
AnnaBridge 167:e84263d55307 674 * The asynchronous TX and RX handler.
AnnaBridge 167:e84263d55307 675 *
AnnaBridge 167:e84263d55307 676 * @param obj The serial object
AnnaBridge 167:e84263d55307 677 * @return Returns event flags if a TX/RX transfer termination condition was met or 0 otherwise
AnnaBridge 167:e84263d55307 678 */
AnnaBridge 167:e84263d55307 679 int serial_irq_handler_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 680 {
AnnaBridge 167:e84263d55307 681 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 682 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 683
AnnaBridge 167:e84263d55307 684 volatile int return_event = 0;
AnnaBridge 167:e84263d55307 685 uint8_t *buf = (uint8_t*)(obj->rx_buff.buffer);
AnnaBridge 167:e84263d55307 686 uint8_t i = 0;
AnnaBridge 167:e84263d55307 687
AnnaBridge 167:e84263d55307 688 // TX PART:
AnnaBridge 167:e84263d55307 689 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 690 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
AnnaBridge 167:e84263d55307 691 // Return event SERIAL_EVENT_TX_COMPLETE if requested
AnnaBridge 167:e84263d55307 692 if ((obj_s->events & SERIAL_EVENT_TX_COMPLETE ) != 0) {
AnnaBridge 167:e84263d55307 693 return_event |= (SERIAL_EVENT_TX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 694 }
AnnaBridge 167:e84263d55307 695 }
AnnaBridge 167:e84263d55307 696 }
AnnaBridge 167:e84263d55307 697
AnnaBridge 167:e84263d55307 698 // Handle error events
AnnaBridge 167:e84263d55307 699 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 167:e84263d55307 700 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 701 return_event |= (SERIAL_EVENT_RX_PARITY_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 702 }
AnnaBridge 167:e84263d55307 703 }
AnnaBridge 167:e84263d55307 704
AnnaBridge 167:e84263d55307 705 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
AnnaBridge 167:e84263d55307 706 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 707 return_event |= (SERIAL_EVENT_RX_FRAMING_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 708 }
AnnaBridge 167:e84263d55307 709 }
AnnaBridge 167:e84263d55307 710
AnnaBridge 167:e84263d55307 711 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 167:e84263d55307 712 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 713 return_event |= (SERIAL_EVENT_RX_OVERRUN_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 714 }
AnnaBridge 167:e84263d55307 715 }
AnnaBridge 167:e84263d55307 716
AnnaBridge 167:e84263d55307 717 HAL_UART_IRQHandler(huart);
AnnaBridge 167:e84263d55307 718
AnnaBridge 167:e84263d55307 719 // Abort if an error occurs
AnnaBridge 167:e84263d55307 720 if (return_event & SERIAL_EVENT_RX_PARITY_ERROR ||
AnnaBridge 167:e84263d55307 721 return_event & SERIAL_EVENT_RX_FRAMING_ERROR ||
AnnaBridge 167:e84263d55307 722 return_event & SERIAL_EVENT_RX_OVERRUN_ERROR) {
AnnaBridge 167:e84263d55307 723 return return_event;
AnnaBridge 167:e84263d55307 724 }
AnnaBridge 167:e84263d55307 725
AnnaBridge 167:e84263d55307 726 //RX PART
AnnaBridge 167:e84263d55307 727 if (huart->RxXferSize != 0) {
AnnaBridge 167:e84263d55307 728 obj->rx_buff.pos = huart->RxXferSize - huart->RxXferCount;
AnnaBridge 167:e84263d55307 729 }
AnnaBridge 167:e84263d55307 730 if ((huart->RxXferCount == 0) && (obj->rx_buff.pos >= (obj->rx_buff.length - 1))) {
AnnaBridge 167:e84263d55307 731 return_event |= (SERIAL_EVENT_RX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 732 }
AnnaBridge 167:e84263d55307 733
AnnaBridge 167:e84263d55307 734 // Check if char_match is present
AnnaBridge 167:e84263d55307 735 if (obj_s->events & SERIAL_EVENT_RX_CHARACTER_MATCH) {
AnnaBridge 167:e84263d55307 736 if (buf != NULL) {
AnnaBridge 167:e84263d55307 737 for (i = 0; i < obj->rx_buff.pos; i++) {
AnnaBridge 167:e84263d55307 738 if (buf[i] == obj->char_match) {
AnnaBridge 167:e84263d55307 739 obj->rx_buff.pos = i;
AnnaBridge 167:e84263d55307 740 return_event |= (SERIAL_EVENT_RX_CHARACTER_MATCH & obj_s->events);
AnnaBridge 167:e84263d55307 741 serial_rx_abort_asynch(obj);
AnnaBridge 167:e84263d55307 742 break;
AnnaBridge 167:e84263d55307 743 }
AnnaBridge 167:e84263d55307 744 }
AnnaBridge 167:e84263d55307 745 }
AnnaBridge 167:e84263d55307 746 }
AnnaBridge 167:e84263d55307 747
AnnaBridge 167:e84263d55307 748 return return_event;
AnnaBridge 167:e84263d55307 749 }
AnnaBridge 167:e84263d55307 750
AnnaBridge 167:e84263d55307 751 /**
AnnaBridge 167:e84263d55307 752 * Abort the ongoing TX transaction. It disables the enabled interupt for TX and
AnnaBridge 167:e84263d55307 753 * flush TX hardware buffer if TX FIFO is used
AnnaBridge 167:e84263d55307 754 *
AnnaBridge 167:e84263d55307 755 * @param obj The serial object
AnnaBridge 167:e84263d55307 756 */
AnnaBridge 167:e84263d55307 757 void serial_tx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 758 {
AnnaBridge 167:e84263d55307 759 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 760 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 761
AnnaBridge 167:e84263d55307 762 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
AnnaBridge 167:e84263d55307 763 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 764
AnnaBridge 167:e84263d55307 765 // clear flags
AnnaBridge 167:e84263d55307 766 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 767
AnnaBridge 167:e84263d55307 768 // reset states
AnnaBridge 167:e84263d55307 769 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 770 // update handle state
AnnaBridge 167:e84263d55307 771 if(huart->gState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 772 huart->gState = HAL_UART_STATE_BUSY_RX;
AnnaBridge 167:e84263d55307 773 } else {
AnnaBridge 167:e84263d55307 774 huart->gState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 775 }
AnnaBridge 167:e84263d55307 776 }
AnnaBridge 167:e84263d55307 777
AnnaBridge 167:e84263d55307 778 /**
AnnaBridge 167:e84263d55307 779 * Abort the ongoing RX transaction It disables the enabled interrupt for RX and
AnnaBridge 167:e84263d55307 780 * flush RX hardware buffer if RX FIFO is used
AnnaBridge 167:e84263d55307 781 *
AnnaBridge 167:e84263d55307 782 * @param obj The serial object
AnnaBridge 167:e84263d55307 783 */
AnnaBridge 167:e84263d55307 784 void serial_rx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 785 {
AnnaBridge 167:e84263d55307 786 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 787 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 788
AnnaBridge 167:e84263d55307 789 // disable interrupts
AnnaBridge 167:e84263d55307 790 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 791 __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
AnnaBridge 167:e84263d55307 792 __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
AnnaBridge 167:e84263d55307 793
AnnaBridge 167:e84263d55307 794 // clear flags
AnnaBridge 167:e84263d55307 795 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_RXNE);
AnnaBridge 167:e84263d55307 796 volatile uint32_t tmpval = huart->Instance->RDR; // Clear errors flag
AnnaBridge 167:e84263d55307 797
AnnaBridge 167:e84263d55307 798 // reset states
AnnaBridge 167:e84263d55307 799 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 800 // update handle state
AnnaBridge 167:e84263d55307 801 if(huart->RxState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 802 huart->RxState = HAL_UART_STATE_BUSY_TX;
AnnaBridge 167:e84263d55307 803 } else {
AnnaBridge 167:e84263d55307 804 huart->RxState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 805 }
AnnaBridge 167:e84263d55307 806 }
AnnaBridge 167:e84263d55307 807
AnnaBridge 167:e84263d55307 808 #endif
AnnaBridge 167:e84263d55307 809
AnnaBridge 167:e84263d55307 810 #if DEVICE_SERIAL_FC
AnnaBridge 167:e84263d55307 811
AnnaBridge 167:e84263d55307 812 /**
AnnaBridge 167:e84263d55307 813 * Set HW Control Flow
AnnaBridge 167:e84263d55307 814 * @param obj The serial object
AnnaBridge 167:e84263d55307 815 * @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS)
AnnaBridge 167:e84263d55307 816 * @param rxflow Pin for the rxflow
AnnaBridge 167:e84263d55307 817 * @param txflow Pin for the txflow
AnnaBridge 167:e84263d55307 818 */
AnnaBridge 167:e84263d55307 819 void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow)
AnnaBridge 167:e84263d55307 820 {
AnnaBridge 167:e84263d55307 821 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 822
AnnaBridge 167:e84263d55307 823 // Determine the UART to use (UART_1, UART_2, ...)
AnnaBridge 167:e84263d55307 824 UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 825 UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 826
AnnaBridge 167:e84263d55307 827 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
AnnaBridge 167:e84263d55307 828 obj_s->uart = (UARTName)pinmap_merge(uart_cts, uart_rts);
AnnaBridge 167:e84263d55307 829 MBED_ASSERT(obj_s->uart != (UARTName)NC);
AnnaBridge 167:e84263d55307 830
AnnaBridge 167:e84263d55307 831 if(type == FlowControlNone) {
AnnaBridge 167:e84263d55307 832 // Disable hardware flow control
AnnaBridge 167:e84263d55307 833 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
AnnaBridge 167:e84263d55307 834 }
AnnaBridge 167:e84263d55307 835 if (type == FlowControlRTS) {
AnnaBridge 167:e84263d55307 836 // Enable RTS
AnnaBridge 167:e84263d55307 837 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 838 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS;
AnnaBridge 167:e84263d55307 839 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 840 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 841 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 842 }
AnnaBridge 167:e84263d55307 843 if (type == FlowControlCTS) {
AnnaBridge 167:e84263d55307 844 // Enable CTS
AnnaBridge 167:e84263d55307 845 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 846 obj_s->hw_flow_ctl = UART_HWCONTROL_CTS;
AnnaBridge 167:e84263d55307 847 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 848 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 849 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 850 }
AnnaBridge 167:e84263d55307 851 if (type == FlowControlRTSCTS) {
AnnaBridge 167:e84263d55307 852 // Enable CTS & RTS
AnnaBridge 167:e84263d55307 853 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 854 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 855 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS_CTS;
AnnaBridge 167:e84263d55307 856 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 857 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 858 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 859 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 860 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 861 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 862 }
AnnaBridge 167:e84263d55307 863
AnnaBridge 167:e84263d55307 864 init_uart(obj);
AnnaBridge 167:e84263d55307 865 }
AnnaBridge 167:e84263d55307 866
AnnaBridge 167:e84263d55307 867 #endif
AnnaBridge 167:e84263d55307 868
AnnaBridge 167:e84263d55307 869 #endif