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targets/TARGET_STM/TARGET_STM32F2/serial_device.c@167:e84263d55307, 2017-06-21 (annotated)

Committer:
AnnaBridge
Date:
Wed Jun 21 17:46:44 2017 +0100
Revision:
167:e84263d55307
Child:
171:19eb464bc2be
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) 2016, 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 <string.h>
AnnaBridge 167:e84263d55307 39 #include "PeripheralPins.h"
AnnaBridge 167:e84263d55307 40 #include "mbed_error.h"
AnnaBridge 167:e84263d55307 41
AnnaBridge 167:e84263d55307 42 #define UART_NUM (8)
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 switch (obj_s->uart) {
AnnaBridge 167:e84263d55307 66 case UART_1:
AnnaBridge 167:e84263d55307 67 __HAL_RCC_USART1_FORCE_RESET();
AnnaBridge 167:e84263d55307 68 __HAL_RCC_USART1_RELEASE_RESET();
AnnaBridge 167:e84263d55307 69 __HAL_RCC_USART1_CLK_ENABLE();
AnnaBridge 167:e84263d55307 70 obj_s->index = 0;
AnnaBridge 167:e84263d55307 71 break;
AnnaBridge 167:e84263d55307 72
AnnaBridge 167:e84263d55307 73 case UART_2:
AnnaBridge 167:e84263d55307 74 __HAL_RCC_USART2_FORCE_RESET();
AnnaBridge 167:e84263d55307 75 __HAL_RCC_USART2_RELEASE_RESET();
AnnaBridge 167:e84263d55307 76 __HAL_RCC_USART2_CLK_ENABLE();
AnnaBridge 167:e84263d55307 77 obj_s->index = 1;
AnnaBridge 167:e84263d55307 78 break;
AnnaBridge 167:e84263d55307 79
AnnaBridge 167:e84263d55307 80 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 81 case UART_3:
AnnaBridge 167:e84263d55307 82 __HAL_RCC_USART3_FORCE_RESET();
AnnaBridge 167:e84263d55307 83 __HAL_RCC_USART3_RELEASE_RESET();
AnnaBridge 167:e84263d55307 84 __HAL_RCC_USART3_CLK_ENABLE();
AnnaBridge 167:e84263d55307 85 obj_s->index = 2;
AnnaBridge 167:e84263d55307 86 break;
AnnaBridge 167:e84263d55307 87 #endif
AnnaBridge 167:e84263d55307 88 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 89 case UART_4:
AnnaBridge 167:e84263d55307 90 __HAL_RCC_UART4_FORCE_RESET();
AnnaBridge 167:e84263d55307 91 __HAL_RCC_UART4_RELEASE_RESET();
AnnaBridge 167:e84263d55307 92 __HAL_RCC_UART4_CLK_ENABLE();
AnnaBridge 167:e84263d55307 93 obj_s->index = 3;
AnnaBridge 167:e84263d55307 94 break;
AnnaBridge 167:e84263d55307 95 #endif
AnnaBridge 167:e84263d55307 96 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 97 case 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 break;
AnnaBridge 167:e84263d55307 103 #endif
AnnaBridge 167:e84263d55307 104 #if defined(USART6_BASE)
AnnaBridge 167:e84263d55307 105 case UART_6:
AnnaBridge 167:e84263d55307 106 __HAL_RCC_USART6_FORCE_RESET();
AnnaBridge 167:e84263d55307 107 __HAL_RCC_USART6_RELEASE_RESET();
AnnaBridge 167:e84263d55307 108 __HAL_RCC_USART6_CLK_ENABLE();
AnnaBridge 167:e84263d55307 109 obj_s->index = 5;
AnnaBridge 167:e84263d55307 110 break;
AnnaBridge 167:e84263d55307 111 #endif
AnnaBridge 167:e84263d55307 112 #if defined(UART7_BASE)
AnnaBridge 167:e84263d55307 113 case UART_7:
AnnaBridge 167:e84263d55307 114 __HAL_RCC_UART7_FORCE_RESET();
AnnaBridge 167:e84263d55307 115 __HAL_RCC_UART7_RELEASE_RESET();
AnnaBridge 167:e84263d55307 116 __HAL_RCC_UART7_CLK_ENABLE();
AnnaBridge 167:e84263d55307 117 obj_s->index = 6;
AnnaBridge 167:e84263d55307 118 break;
AnnaBridge 167:e84263d55307 119 #endif
AnnaBridge 167:e84263d55307 120 #if defined(UART8_BASE)
AnnaBridge 167:e84263d55307 121 case UART_8:
AnnaBridge 167:e84263d55307 122 __HAL_RCC_UART8_FORCE_RESET();
AnnaBridge 167:e84263d55307 123 __HAL_RCC_UART8_RELEASE_RESET();
AnnaBridge 167:e84263d55307 124 __HAL_RCC_UART8_CLK_ENABLE();
AnnaBridge 167:e84263d55307 125 obj_s->index = 7;
AnnaBridge 167:e84263d55307 126 break;
AnnaBridge 167:e84263d55307 127 #endif
AnnaBridge 167:e84263d55307 128 }
AnnaBridge 167:e84263d55307 129
AnnaBridge 167:e84263d55307 130 // Configure the UART pins
AnnaBridge 167:e84263d55307 131 pinmap_pinout(tx, PinMap_UART_TX);
AnnaBridge 167:e84263d55307 132 pinmap_pinout(rx, PinMap_UART_RX);
AnnaBridge 167:e84263d55307 133
AnnaBridge 167:e84263d55307 134 if (tx != NC) {
AnnaBridge 167:e84263d55307 135 pin_mode(tx, PullUp);
AnnaBridge 167:e84263d55307 136 }
AnnaBridge 167:e84263d55307 137 if (rx != NC) {
AnnaBridge 167:e84263d55307 138 pin_mode(rx, PullUp);
AnnaBridge 167:e84263d55307 139 }
AnnaBridge 167:e84263d55307 140
AnnaBridge 167:e84263d55307 141 // Configure UART
AnnaBridge 167:e84263d55307 142 obj_s->baudrate = 9600;
AnnaBridge 167:e84263d55307 143 obj_s->databits = UART_WORDLENGTH_8B;
AnnaBridge 167:e84263d55307 144 obj_s->stopbits = UART_STOPBITS_1;
AnnaBridge 167:e84263d55307 145 obj_s->parity = UART_PARITY_NONE;
AnnaBridge 167:e84263d55307 146
AnnaBridge 167:e84263d55307 147 #if DEVICE_SERIAL_FC
AnnaBridge 167:e84263d55307 148 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
AnnaBridge 167:e84263d55307 149 #endif
AnnaBridge 167:e84263d55307 150
AnnaBridge 167:e84263d55307 151 obj_s->pin_tx = tx;
AnnaBridge 167:e84263d55307 152 obj_s->pin_rx = rx;
AnnaBridge 167:e84263d55307 153
AnnaBridge 167:e84263d55307 154 init_uart(obj);
AnnaBridge 167:e84263d55307 155
AnnaBridge 167:e84263d55307 156 // For stdio management
AnnaBridge 167:e84263d55307 157 if (obj_s->uart == STDIO_UART) {
AnnaBridge 167:e84263d55307 158 stdio_uart_inited = 1;
AnnaBridge 167:e84263d55307 159 memcpy(&stdio_uart, obj, sizeof(serial_t));
AnnaBridge 167:e84263d55307 160 }
AnnaBridge 167:e84263d55307 161 }
AnnaBridge 167:e84263d55307 162
AnnaBridge 167:e84263d55307 163 void serial_free(serial_t *obj)
AnnaBridge 167:e84263d55307 164 {
AnnaBridge 167:e84263d55307 165 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 166
AnnaBridge 167:e84263d55307 167 // Reset UART and disable clock
AnnaBridge 167:e84263d55307 168 switch (obj_s->index) {
AnnaBridge 167:e84263d55307 169 case 0:
AnnaBridge 167:e84263d55307 170 __USART1_FORCE_RESET();
AnnaBridge 167:e84263d55307 171 __USART1_RELEASE_RESET();
AnnaBridge 167:e84263d55307 172 __USART1_CLK_DISABLE();
AnnaBridge 167:e84263d55307 173 break;
AnnaBridge 167:e84263d55307 174
AnnaBridge 167:e84263d55307 175 case 1:
AnnaBridge 167:e84263d55307 176 __USART2_FORCE_RESET();
AnnaBridge 167:e84263d55307 177 __USART2_RELEASE_RESET();
AnnaBridge 167:e84263d55307 178 __USART2_CLK_DISABLE();
AnnaBridge 167:e84263d55307 179 break;
AnnaBridge 167:e84263d55307 180
AnnaBridge 167:e84263d55307 181 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 182 case 2:
AnnaBridge 167:e84263d55307 183 __USART3_FORCE_RESET();
AnnaBridge 167:e84263d55307 184 __USART3_RELEASE_RESET();
AnnaBridge 167:e84263d55307 185 __USART3_CLK_DISABLE();
AnnaBridge 167:e84263d55307 186 break;
AnnaBridge 167:e84263d55307 187 #endif
AnnaBridge 167:e84263d55307 188 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 189 case 3:
AnnaBridge 167:e84263d55307 190 __UART4_FORCE_RESET();
AnnaBridge 167:e84263d55307 191 __UART4_RELEASE_RESET();
AnnaBridge 167:e84263d55307 192 __UART4_CLK_DISABLE();
AnnaBridge 167:e84263d55307 193 break;
AnnaBridge 167:e84263d55307 194 #endif
AnnaBridge 167:e84263d55307 195 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 196 case 4:
AnnaBridge 167:e84263d55307 197 __UART5_FORCE_RESET();
AnnaBridge 167:e84263d55307 198 __UART5_RELEASE_RESET();
AnnaBridge 167:e84263d55307 199 __UART5_CLK_DISABLE();
AnnaBridge 167:e84263d55307 200 break;
AnnaBridge 167:e84263d55307 201 #endif
AnnaBridge 167:e84263d55307 202 #if defined(USART6_BASE)
AnnaBridge 167:e84263d55307 203 case 5:
AnnaBridge 167:e84263d55307 204 __USART6_FORCE_RESET();
AnnaBridge 167:e84263d55307 205 __USART6_RELEASE_RESET();
AnnaBridge 167:e84263d55307 206 __USART6_CLK_DISABLE();
AnnaBridge 167:e84263d55307 207 break;
AnnaBridge 167:e84263d55307 208 #endif
AnnaBridge 167:e84263d55307 209 #if defined(UART7_BASE)
AnnaBridge 167:e84263d55307 210 case 6:
AnnaBridge 167:e84263d55307 211 __UART7_FORCE_RESET();
AnnaBridge 167:e84263d55307 212 __UART7_RELEASE_RESET();
AnnaBridge 167:e84263d55307 213 __UART7_CLK_DISABLE();
AnnaBridge 167:e84263d55307 214 break;
AnnaBridge 167:e84263d55307 215 #endif
AnnaBridge 167:e84263d55307 216 #if defined(UART8_BASE)
AnnaBridge 167:e84263d55307 217 case 7:
AnnaBridge 167:e84263d55307 218 __UART8_FORCE_RESET();
AnnaBridge 167:e84263d55307 219 __UART8_RELEASE_RESET();
AnnaBridge 167:e84263d55307 220 __UART8_CLK_DISABLE();
AnnaBridge 167:e84263d55307 221 break;
AnnaBridge 167:e84263d55307 222 #endif
AnnaBridge 167:e84263d55307 223 }
AnnaBridge 167:e84263d55307 224
AnnaBridge 167:e84263d55307 225 // Configure GPIOs
AnnaBridge 167:e84263d55307 226 pin_function(obj_s->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
AnnaBridge 167:e84263d55307 227 pin_function(obj_s->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
AnnaBridge 167:e84263d55307 228
AnnaBridge 167:e84263d55307 229 serial_irq_ids[obj_s->index] = 0;
AnnaBridge 167:e84263d55307 230 }
AnnaBridge 167:e84263d55307 231
AnnaBridge 167:e84263d55307 232 void serial_baud(serial_t *obj, int baudrate)
AnnaBridge 167:e84263d55307 233 {
AnnaBridge 167:e84263d55307 234 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 235
AnnaBridge 167:e84263d55307 236 obj_s->baudrate = baudrate;
AnnaBridge 167:e84263d55307 237 init_uart(obj);
AnnaBridge 167:e84263d55307 238 }
AnnaBridge 167:e84263d55307 239
AnnaBridge 167:e84263d55307 240 /******************************************************************************
AnnaBridge 167:e84263d55307 241 * INTERRUPTS HANDLING
AnnaBridge 167:e84263d55307 242 ******************************************************************************/
AnnaBridge 167:e84263d55307 243
AnnaBridge 167:e84263d55307 244 static void uart_irq(int id)
AnnaBridge 167:e84263d55307 245 {
AnnaBridge 167:e84263d55307 246 UART_HandleTypeDef * huart = &uart_handlers[id];
AnnaBridge 167:e84263d55307 247
AnnaBridge 167:e84263d55307 248 if (serial_irq_ids[id] != 0) {
AnnaBridge 167:e84263d55307 249 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 250 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
AnnaBridge 167:e84263d55307 251 irq_handler(serial_irq_ids[id], TxIrq);
AnnaBridge 167:e84263d55307 252 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 253 }
AnnaBridge 167:e84263d55307 254 }
AnnaBridge 167:e84263d55307 255 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) {
AnnaBridge 167:e84263d55307 256 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_RXNE) != RESET) {
AnnaBridge 167:e84263d55307 257 irq_handler(serial_irq_ids[id], RxIrq);
AnnaBridge 167:e84263d55307 258 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_RXNE);
AnnaBridge 167:e84263d55307 259 }
AnnaBridge 167:e84263d55307 260 }
AnnaBridge 167:e84263d55307 261 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 167:e84263d55307 262 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 263 volatile uint32_t tmpval = huart->Instance->DR; // Clear ORE flag
AnnaBridge 167:e84263d55307 264 }
AnnaBridge 167:e84263d55307 265 }
AnnaBridge 167:e84263d55307 266 }
AnnaBridge 167:e84263d55307 267 }
AnnaBridge 167:e84263d55307 268
AnnaBridge 167:e84263d55307 269 static void uart1_irq(void)
AnnaBridge 167:e84263d55307 270 {
AnnaBridge 167:e84263d55307 271 uart_irq(0);
AnnaBridge 167:e84263d55307 272 }
AnnaBridge 167:e84263d55307 273
AnnaBridge 167:e84263d55307 274 static void uart2_irq(void)
AnnaBridge 167:e84263d55307 275 {
AnnaBridge 167:e84263d55307 276 uart_irq(1);
AnnaBridge 167:e84263d55307 277 }
AnnaBridge 167:e84263d55307 278
AnnaBridge 167:e84263d55307 279 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 280 static void uart3_irq(void)
AnnaBridge 167:e84263d55307 281 {
AnnaBridge 167:e84263d55307 282 uart_irq(2);
AnnaBridge 167:e84263d55307 283 }
AnnaBridge 167:e84263d55307 284 #endif
AnnaBridge 167:e84263d55307 285
AnnaBridge 167:e84263d55307 286 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 287 static void uart4_irq(void)
AnnaBridge 167:e84263d55307 288 {
AnnaBridge 167:e84263d55307 289 uart_irq(3);
AnnaBridge 167:e84263d55307 290 }
AnnaBridge 167:e84263d55307 291 #endif
AnnaBridge 167:e84263d55307 292
AnnaBridge 167:e84263d55307 293 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 294 static void uart5_irq(void)
AnnaBridge 167:e84263d55307 295 {
AnnaBridge 167:e84263d55307 296 uart_irq(4);
AnnaBridge 167:e84263d55307 297 }
AnnaBridge 167:e84263d55307 298 #endif
AnnaBridge 167:e84263d55307 299
AnnaBridge 167:e84263d55307 300 #if defined(USART6_BASE)
AnnaBridge 167:e84263d55307 301 static void uart6_irq(void)
AnnaBridge 167:e84263d55307 302 {
AnnaBridge 167:e84263d55307 303 uart_irq(5);
AnnaBridge 167:e84263d55307 304 }
AnnaBridge 167:e84263d55307 305 #endif
AnnaBridge 167:e84263d55307 306
AnnaBridge 167:e84263d55307 307 #if defined(UART7_BASE)
AnnaBridge 167:e84263d55307 308 static void uart7_irq(void)
AnnaBridge 167:e84263d55307 309 {
AnnaBridge 167:e84263d55307 310 uart_irq(6);
AnnaBridge 167:e84263d55307 311 }
AnnaBridge 167:e84263d55307 312 #endif
AnnaBridge 167:e84263d55307 313
AnnaBridge 167:e84263d55307 314 #if defined(UART8_BASE)
AnnaBridge 167:e84263d55307 315 static void uart8_irq(void)
AnnaBridge 167:e84263d55307 316 {
AnnaBridge 167:e84263d55307 317 uart_irq(7);
AnnaBridge 167:e84263d55307 318 }
AnnaBridge 167:e84263d55307 319 #endif
AnnaBridge 167:e84263d55307 320
AnnaBridge 167:e84263d55307 321 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
AnnaBridge 167:e84263d55307 322 {
AnnaBridge 167:e84263d55307 323 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 324
AnnaBridge 167:e84263d55307 325 irq_handler = handler;
AnnaBridge 167:e84263d55307 326 serial_irq_ids[obj_s->index] = id;
AnnaBridge 167:e84263d55307 327 }
AnnaBridge 167:e84263d55307 328
AnnaBridge 167:e84263d55307 329 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
AnnaBridge 167:e84263d55307 330 {
AnnaBridge 167:e84263d55307 331 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 332 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 333 IRQn_Type irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 334 uint32_t vector = 0;
AnnaBridge 167:e84263d55307 335
AnnaBridge 167:e84263d55307 336 switch (obj_s->index) {
AnnaBridge 167:e84263d55307 337 case 0:
AnnaBridge 167:e84263d55307 338 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 339 vector = (uint32_t)&uart1_irq;
AnnaBridge 167:e84263d55307 340 break;
AnnaBridge 167:e84263d55307 341
AnnaBridge 167:e84263d55307 342 case 1:
AnnaBridge 167:e84263d55307 343 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 344 vector = (uint32_t)&uart2_irq;
AnnaBridge 167:e84263d55307 345 break;
AnnaBridge 167:e84263d55307 346 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 347 case 2:
AnnaBridge 167:e84263d55307 348 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 349 vector = (uint32_t)&uart3_irq;
AnnaBridge 167:e84263d55307 350 break;
AnnaBridge 167:e84263d55307 351 #endif
AnnaBridge 167:e84263d55307 352 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 353 case 3:
AnnaBridge 167:e84263d55307 354 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 355 vector = (uint32_t)&uart4_irq;
AnnaBridge 167:e84263d55307 356 break;
AnnaBridge 167:e84263d55307 357 #endif
AnnaBridge 167:e84263d55307 358 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 359 case 4:
AnnaBridge 167:e84263d55307 360 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 361 vector = (uint32_t)&uart5_irq;
AnnaBridge 167:e84263d55307 362 break;
AnnaBridge 167:e84263d55307 363 #endif
AnnaBridge 167:e84263d55307 364 #if defined(USART6_BASE)
AnnaBridge 167:e84263d55307 365 case 5:
AnnaBridge 167:e84263d55307 366 irq_n = USART6_IRQn;
AnnaBridge 167:e84263d55307 367 vector = (uint32_t)&uart6_irq;
AnnaBridge 167:e84263d55307 368 break;
AnnaBridge 167:e84263d55307 369 #endif
AnnaBridge 167:e84263d55307 370 #if defined(UART7_BASE)
AnnaBridge 167:e84263d55307 371 case 6:
AnnaBridge 167:e84263d55307 372 irq_n = UART7_IRQn;
AnnaBridge 167:e84263d55307 373 vector = (uint32_t)&uart7_irq;
AnnaBridge 167:e84263d55307 374 break;
AnnaBridge 167:e84263d55307 375 #endif
AnnaBridge 167:e84263d55307 376 #if defined(UART8_BASE)
AnnaBridge 167:e84263d55307 377 case 7:
AnnaBridge 167:e84263d55307 378 irq_n = UART8_IRQn;
AnnaBridge 167:e84263d55307 379 vector = (uint32_t)&uart8_irq;
AnnaBridge 167:e84263d55307 380 break;
AnnaBridge 167:e84263d55307 381 #endif
AnnaBridge 167:e84263d55307 382 }
AnnaBridge 167:e84263d55307 383
AnnaBridge 167:e84263d55307 384 if (enable) {
AnnaBridge 167:e84263d55307 385 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 386 __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 387 } else { // TxIrq
AnnaBridge 167:e84263d55307 388 __HAL_UART_ENABLE_IT(huart, UART_IT_TC);
AnnaBridge 167:e84263d55307 389 }
AnnaBridge 167:e84263d55307 390 NVIC_SetVector(irq_n, vector);
AnnaBridge 167:e84263d55307 391 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 392
AnnaBridge 167:e84263d55307 393 } else { // disable
AnnaBridge 167:e84263d55307 394 int all_disabled = 0;
AnnaBridge 167:e84263d55307 395 if (irq == RxIrq) {
AnnaBridge 167:e84263d55307 396 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 397 // Check if TxIrq is disabled too
AnnaBridge 167:e84263d55307 398 if ((huart->Instance->CR1 & USART_CR1_TXEIE) == 0) {
AnnaBridge 167:e84263d55307 399 all_disabled = 1;
AnnaBridge 167:e84263d55307 400 }
AnnaBridge 167:e84263d55307 401 } else { // TxIrq
AnnaBridge 167:e84263d55307 402 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
AnnaBridge 167:e84263d55307 403 // Check if RxIrq is disabled too
AnnaBridge 167:e84263d55307 404 if ((huart->Instance->CR1 & USART_CR1_RXNEIE) == 0) {
AnnaBridge 167:e84263d55307 405 all_disabled = 1;
AnnaBridge 167:e84263d55307 406 }
AnnaBridge 167:e84263d55307 407 }
AnnaBridge 167:e84263d55307 408
AnnaBridge 167:e84263d55307 409 if (all_disabled) {
AnnaBridge 167:e84263d55307 410 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 411 }
AnnaBridge 167:e84263d55307 412 }
AnnaBridge 167:e84263d55307 413 }
AnnaBridge 167:e84263d55307 414
AnnaBridge 167:e84263d55307 415 /******************************************************************************
AnnaBridge 167:e84263d55307 416 * READ/WRITE
AnnaBridge 167:e84263d55307 417 ******************************************************************************/
AnnaBridge 167:e84263d55307 418
AnnaBridge 167:e84263d55307 419 int serial_getc(serial_t *obj)
AnnaBridge 167:e84263d55307 420 {
AnnaBridge 167:e84263d55307 421 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 422 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 423
AnnaBridge 167:e84263d55307 424 while (!serial_readable(obj));
AnnaBridge 167:e84263d55307 425 return (int)(huart->Instance->DR & (uint16_t)0x1FF);
AnnaBridge 167:e84263d55307 426 }
AnnaBridge 167:e84263d55307 427
AnnaBridge 167:e84263d55307 428 void serial_putc(serial_t *obj, int c)
AnnaBridge 167:e84263d55307 429 {
AnnaBridge 167:e84263d55307 430 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 431 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 432
AnnaBridge 167:e84263d55307 433 while (!serial_writable(obj));
AnnaBridge 167:e84263d55307 434 huart->Instance->DR = (uint32_t)(c & (uint16_t)0x1FF);
AnnaBridge 167:e84263d55307 435 }
AnnaBridge 167:e84263d55307 436
AnnaBridge 167:e84263d55307 437 void serial_clear(serial_t *obj)
AnnaBridge 167:e84263d55307 438 {
AnnaBridge 167:e84263d55307 439 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 440 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 441
AnnaBridge 167:e84263d55307 442 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 443 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 444 }
AnnaBridge 167:e84263d55307 445
AnnaBridge 167:e84263d55307 446 void serial_break_set(serial_t *obj)
AnnaBridge 167:e84263d55307 447 {
AnnaBridge 167:e84263d55307 448 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 449 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 450
AnnaBridge 167:e84263d55307 451 HAL_LIN_SendBreak(huart);
AnnaBridge 167:e84263d55307 452 }
AnnaBridge 167:e84263d55307 453
AnnaBridge 167:e84263d55307 454 #if DEVICE_SERIAL_ASYNCH
AnnaBridge 167:e84263d55307 455
AnnaBridge 167:e84263d55307 456 /******************************************************************************
AnnaBridge 167:e84263d55307 457 * LOCAL HELPER FUNCTIONS
AnnaBridge 167:e84263d55307 458 ******************************************************************************/
AnnaBridge 167:e84263d55307 459
AnnaBridge 167:e84263d55307 460 /**
AnnaBridge 167:e84263d55307 461 * Configure the TX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 462 *
AnnaBridge 167:e84263d55307 463 * @param obj The serial object.
AnnaBridge 167:e84263d55307 464 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 465 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 466 */
AnnaBridge 167:e84263d55307 467 static void serial_tx_buffer_set(serial_t *obj, void *tx, int tx_length, uint8_t width)
AnnaBridge 167:e84263d55307 468 {
AnnaBridge 167:e84263d55307 469 (void)width;
AnnaBridge 167:e84263d55307 470
AnnaBridge 167:e84263d55307 471 // Exit if a transmit is already on-going
AnnaBridge 167:e84263d55307 472 if (serial_tx_active(obj)) {
AnnaBridge 167:e84263d55307 473 return;
AnnaBridge 167:e84263d55307 474 }
AnnaBridge 167:e84263d55307 475
AnnaBridge 167:e84263d55307 476 obj->tx_buff.buffer = tx;
AnnaBridge 167:e84263d55307 477 obj->tx_buff.length = tx_length;
AnnaBridge 167:e84263d55307 478 obj->tx_buff.pos = 0;
AnnaBridge 167:e84263d55307 479 }
AnnaBridge 167:e84263d55307 480
AnnaBridge 167:e84263d55307 481 /**
AnnaBridge 167:e84263d55307 482 * Configure the RX buffer for an asynchronous write serial transaction
AnnaBridge 167:e84263d55307 483 *
AnnaBridge 167:e84263d55307 484 * @param obj The serial object.
AnnaBridge 167:e84263d55307 485 * @param tx The buffer for sending.
AnnaBridge 167:e84263d55307 486 * @param tx_length The number of words to transmit.
AnnaBridge 167:e84263d55307 487 */
AnnaBridge 167:e84263d55307 488 static void serial_rx_buffer_set(serial_t *obj, void *rx, int rx_length, uint8_t width)
AnnaBridge 167:e84263d55307 489 {
AnnaBridge 167:e84263d55307 490 (void)width;
AnnaBridge 167:e84263d55307 491
AnnaBridge 167:e84263d55307 492 // Exit if a reception is already on-going
AnnaBridge 167:e84263d55307 493 if (serial_rx_active(obj)) {
AnnaBridge 167:e84263d55307 494 return;
AnnaBridge 167:e84263d55307 495 }
AnnaBridge 167:e84263d55307 496
AnnaBridge 167:e84263d55307 497 obj->rx_buff.buffer = rx;
AnnaBridge 167:e84263d55307 498 obj->rx_buff.length = rx_length;
AnnaBridge 167:e84263d55307 499 obj->rx_buff.pos = 0;
AnnaBridge 167:e84263d55307 500 }
AnnaBridge 167:e84263d55307 501
AnnaBridge 167:e84263d55307 502 /**
AnnaBridge 167:e84263d55307 503 * Configure events
AnnaBridge 167:e84263d55307 504 *
AnnaBridge 167:e84263d55307 505 * @param obj The serial object
AnnaBridge 167:e84263d55307 506 * @param event The logical OR of the events to configure
AnnaBridge 167:e84263d55307 507 * @param enable Set to non-zero to enable events, or zero to disable them
AnnaBridge 167:e84263d55307 508 */
AnnaBridge 167:e84263d55307 509 static void serial_enable_event(serial_t *obj, int event, uint8_t enable)
AnnaBridge 167:e84263d55307 510 {
AnnaBridge 167:e84263d55307 511 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 512
AnnaBridge 167:e84263d55307 513 // Shouldn't have to enable interrupt here, just need to keep track of the requested events.
AnnaBridge 167:e84263d55307 514 if (enable) {
AnnaBridge 167:e84263d55307 515 obj_s->events |= event;
AnnaBridge 167:e84263d55307 516 } else {
AnnaBridge 167:e84263d55307 517 obj_s->events &= ~event;
AnnaBridge 167:e84263d55307 518 }
AnnaBridge 167:e84263d55307 519 }
AnnaBridge 167:e84263d55307 520
AnnaBridge 167:e84263d55307 521
AnnaBridge 167:e84263d55307 522 /**
AnnaBridge 167:e84263d55307 523 * Get index of serial object TX IRQ, relating it to the physical peripheral.
AnnaBridge 167:e84263d55307 524 *
AnnaBridge 167:e84263d55307 525 * @param obj pointer to serial object
AnnaBridge 167:e84263d55307 526 * @return internal NVIC TX IRQ index of U(S)ART peripheral
AnnaBridge 167:e84263d55307 527 */
AnnaBridge 167:e84263d55307 528 static IRQn_Type serial_get_irq_n(serial_t *obj)
AnnaBridge 167:e84263d55307 529 {
AnnaBridge 167:e84263d55307 530 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 531 IRQn_Type irq_n;
AnnaBridge 167:e84263d55307 532
AnnaBridge 167:e84263d55307 533 switch (obj_s->index) {
AnnaBridge 167:e84263d55307 534 #if defined(USART1_BASE)
AnnaBridge 167:e84263d55307 535 case 0:
AnnaBridge 167:e84263d55307 536 irq_n = USART1_IRQn;
AnnaBridge 167:e84263d55307 537 break;
AnnaBridge 167:e84263d55307 538 #endif
AnnaBridge 167:e84263d55307 539 #if defined(USART2_BASE)
AnnaBridge 167:e84263d55307 540 case 1:
AnnaBridge 167:e84263d55307 541 irq_n = USART2_IRQn;
AnnaBridge 167:e84263d55307 542 break;
AnnaBridge 167:e84263d55307 543 #endif
AnnaBridge 167:e84263d55307 544 #if defined(USART3_BASE)
AnnaBridge 167:e84263d55307 545 case 2:
AnnaBridge 167:e84263d55307 546 irq_n = USART3_IRQn;
AnnaBridge 167:e84263d55307 547 break;
AnnaBridge 167:e84263d55307 548 #endif
AnnaBridge 167:e84263d55307 549 #if defined(UART4_BASE)
AnnaBridge 167:e84263d55307 550 case 3:
AnnaBridge 167:e84263d55307 551 irq_n = UART4_IRQn;
AnnaBridge 167:e84263d55307 552 break;
AnnaBridge 167:e84263d55307 553 #endif
AnnaBridge 167:e84263d55307 554 #if defined(UART5_BASE)
AnnaBridge 167:e84263d55307 555 case 4:
AnnaBridge 167:e84263d55307 556 irq_n = UART5_IRQn;
AnnaBridge 167:e84263d55307 557 break;
AnnaBridge 167:e84263d55307 558 #endif
AnnaBridge 167:e84263d55307 559 #if defined(USART6_BASE)
AnnaBridge 167:e84263d55307 560 case 5:
AnnaBridge 167:e84263d55307 561 irq_n = USART6_IRQn;
AnnaBridge 167:e84263d55307 562 break;
AnnaBridge 167:e84263d55307 563 #endif
AnnaBridge 167:e84263d55307 564 #if defined(UART7_BASE)
AnnaBridge 167:e84263d55307 565 case 6:
AnnaBridge 167:e84263d55307 566 irq_n = UART7_IRQn;
AnnaBridge 167:e84263d55307 567 break;
AnnaBridge 167:e84263d55307 568 #endif
AnnaBridge 167:e84263d55307 569 #if defined(UART8_BASE)
AnnaBridge 167:e84263d55307 570 case 7:
AnnaBridge 167:e84263d55307 571 irq_n = UART8_IRQn;
AnnaBridge 167:e84263d55307 572 break;
AnnaBridge 167:e84263d55307 573 #endif
AnnaBridge 167:e84263d55307 574 default:
AnnaBridge 167:e84263d55307 575 irq_n = (IRQn_Type)0;
AnnaBridge 167:e84263d55307 576 }
AnnaBridge 167:e84263d55307 577
AnnaBridge 167:e84263d55307 578 return irq_n;
AnnaBridge 167:e84263d55307 579 }
AnnaBridge 167:e84263d55307 580
AnnaBridge 167:e84263d55307 581
AnnaBridge 167:e84263d55307 582 /******************************************************************************
AnnaBridge 167:e84263d55307 583 * MBED API FUNCTIONS
AnnaBridge 167:e84263d55307 584 ******************************************************************************/
AnnaBridge 167:e84263d55307 585
AnnaBridge 167:e84263d55307 586 /**
AnnaBridge 167:e84263d55307 587 * Begin asynchronous TX transfer. The used buffer is specified in the serial
AnnaBridge 167:e84263d55307 588 * object, tx_buff
AnnaBridge 167:e84263d55307 589 *
AnnaBridge 167:e84263d55307 590 * @param obj The serial object
AnnaBridge 167:e84263d55307 591 * @param tx The buffer for sending
AnnaBridge 167:e84263d55307 592 * @param tx_length The number of words to transmit
AnnaBridge 167:e84263d55307 593 * @param tx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 594 * @param handler The serial handler
AnnaBridge 167:e84263d55307 595 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 596 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 597 * @return Returns number of data transfered, or 0 otherwise
AnnaBridge 167:e84263d55307 598 */
AnnaBridge 167:e84263d55307 599 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 600 {
AnnaBridge 167:e84263d55307 601 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 602 (void) hint;
AnnaBridge 167:e84263d55307 603
AnnaBridge 167:e84263d55307 604 // Check buffer is ok
AnnaBridge 167:e84263d55307 605 MBED_ASSERT(tx != (void*)0);
AnnaBridge 167:e84263d55307 606 MBED_ASSERT(tx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 607
AnnaBridge 167:e84263d55307 608 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 609 UART_HandleTypeDef * huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 610
AnnaBridge 167:e84263d55307 611 if (tx_length == 0) {
AnnaBridge 167:e84263d55307 612 return 0;
AnnaBridge 167:e84263d55307 613 }
AnnaBridge 167:e84263d55307 614
AnnaBridge 167:e84263d55307 615 // Set up buffer
AnnaBridge 167:e84263d55307 616 serial_tx_buffer_set(obj, (void *)tx, tx_length, tx_width);
AnnaBridge 167:e84263d55307 617
AnnaBridge 167:e84263d55307 618 // Set up events
AnnaBridge 167:e84263d55307 619 serial_enable_event(obj, SERIAL_EVENT_TX_ALL, 0); // Clear all events
AnnaBridge 167:e84263d55307 620 serial_enable_event(obj, event, 1); // Set only the wanted events
AnnaBridge 167:e84263d55307 621
AnnaBridge 167:e84263d55307 622 // Enable interrupt
AnnaBridge 167:e84263d55307 623 IRQn_Type irq_n = serial_get_irq_n(obj);
AnnaBridge 167:e84263d55307 624 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 625 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 626 NVIC_SetPriority(irq_n, 1);
AnnaBridge 167:e84263d55307 627 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 628 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 629
AnnaBridge 167:e84263d55307 630 // the following function will enable UART_IT_TXE and error interrupts
AnnaBridge 167:e84263d55307 631 if (HAL_UART_Transmit_IT(huart, (uint8_t*)tx, tx_length) != HAL_OK) {
AnnaBridge 167:e84263d55307 632 return 0;
AnnaBridge 167:e84263d55307 633 }
AnnaBridge 167:e84263d55307 634
AnnaBridge 167:e84263d55307 635 return tx_length;
AnnaBridge 167:e84263d55307 636 }
AnnaBridge 167:e84263d55307 637
AnnaBridge 167:e84263d55307 638 /**
AnnaBridge 167:e84263d55307 639 * Begin asynchronous RX transfer (enable interrupt for data collecting)
AnnaBridge 167:e84263d55307 640 * The used buffer is specified in the serial object, rx_buff
AnnaBridge 167:e84263d55307 641 *
AnnaBridge 167:e84263d55307 642 * @param obj The serial object
AnnaBridge 167:e84263d55307 643 * @param rx The buffer for sending
AnnaBridge 167:e84263d55307 644 * @param rx_length The number of words to transmit
AnnaBridge 167:e84263d55307 645 * @param rx_width The bit width of buffer word
AnnaBridge 167:e84263d55307 646 * @param handler The serial handler
AnnaBridge 167:e84263d55307 647 * @param event The logical OR of events to be registered
AnnaBridge 167:e84263d55307 648 * @param handler The serial handler
AnnaBridge 167:e84263d55307 649 * @param char_match A character in range 0-254 to be matched
AnnaBridge 167:e84263d55307 650 * @param hint A suggestion for how to use DMA with this transfer
AnnaBridge 167:e84263d55307 651 */
AnnaBridge 167:e84263d55307 652 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 653 {
AnnaBridge 167:e84263d55307 654 // TODO: DMA usage is currently ignored
AnnaBridge 167:e84263d55307 655 (void) hint;
AnnaBridge 167:e84263d55307 656
AnnaBridge 167:e84263d55307 657 /* Sanity check arguments */
AnnaBridge 167:e84263d55307 658 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 659 MBED_ASSERT(rx != (void*)0);
AnnaBridge 167:e84263d55307 660 MBED_ASSERT(rx_width == 8); // support only 8b width
AnnaBridge 167:e84263d55307 661
AnnaBridge 167:e84263d55307 662 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 663 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 664
AnnaBridge 167:e84263d55307 665 serial_enable_event(obj, SERIAL_EVENT_RX_ALL, 0);
AnnaBridge 167:e84263d55307 666 serial_enable_event(obj, event, 1);
AnnaBridge 167:e84263d55307 667
AnnaBridge 167:e84263d55307 668 // set CharMatch
AnnaBridge 167:e84263d55307 669 obj->char_match = char_match;
AnnaBridge 167:e84263d55307 670
AnnaBridge 167:e84263d55307 671 serial_rx_buffer_set(obj, rx, rx_length, rx_width);
AnnaBridge 167:e84263d55307 672
AnnaBridge 167:e84263d55307 673 IRQn_Type irq_n = serial_get_irq_n(obj);
AnnaBridge 167:e84263d55307 674 NVIC_ClearPendingIRQ(irq_n);
AnnaBridge 167:e84263d55307 675 NVIC_DisableIRQ(irq_n);
AnnaBridge 167:e84263d55307 676 NVIC_SetPriority(irq_n, 0);
AnnaBridge 167:e84263d55307 677 NVIC_SetVector(irq_n, (uint32_t)handler);
AnnaBridge 167:e84263d55307 678 NVIC_EnableIRQ(irq_n);
AnnaBridge 167:e84263d55307 679
AnnaBridge 167:e84263d55307 680 // following HAL function will enable the RXNE interrupt + error interrupts
AnnaBridge 167:e84263d55307 681 HAL_UART_Receive_IT(huart, (uint8_t*)rx, rx_length);
AnnaBridge 167:e84263d55307 682 }
AnnaBridge 167:e84263d55307 683
AnnaBridge 167:e84263d55307 684 /**
AnnaBridge 167:e84263d55307 685 * Attempts to determine if the serial peripheral is already in use for TX
AnnaBridge 167:e84263d55307 686 *
AnnaBridge 167:e84263d55307 687 * @param obj The serial object
AnnaBridge 167:e84263d55307 688 * @return Non-zero if the TX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 689 */
AnnaBridge 167:e84263d55307 690 uint8_t serial_tx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 691 {
AnnaBridge 167:e84263d55307 692 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 693
AnnaBridge 167:e84263d55307 694 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 695 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 696
AnnaBridge 167:e84263d55307 697 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_TX) ? 1 : 0);
AnnaBridge 167:e84263d55307 698 }
AnnaBridge 167:e84263d55307 699
AnnaBridge 167:e84263d55307 700 /**
AnnaBridge 167:e84263d55307 701 * Attempts to determine if the serial peripheral is already in use for RX
AnnaBridge 167:e84263d55307 702 *
AnnaBridge 167:e84263d55307 703 * @param obj The serial object
AnnaBridge 167:e84263d55307 704 * @return Non-zero if the RX transaction is ongoing, 0 otherwise
AnnaBridge 167:e84263d55307 705 */
AnnaBridge 167:e84263d55307 706 uint8_t serial_rx_active(serial_t *obj)
AnnaBridge 167:e84263d55307 707 {
AnnaBridge 167:e84263d55307 708 MBED_ASSERT(obj);
AnnaBridge 167:e84263d55307 709
AnnaBridge 167:e84263d55307 710 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 711 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 712
AnnaBridge 167:e84263d55307 713 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_RX) ? 1 : 0);
AnnaBridge 167:e84263d55307 714 }
AnnaBridge 167:e84263d55307 715
AnnaBridge 167:e84263d55307 716 void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 717 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 718 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 719 }
AnnaBridge 167:e84263d55307 720 }
AnnaBridge 167:e84263d55307 721
AnnaBridge 167:e84263d55307 722 void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart) {
AnnaBridge 167:e84263d55307 723 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 167:e84263d55307 724 volatile uint32_t tmpval = huart->Instance->DR; // Clear PE flag
AnnaBridge 167:e84263d55307 725 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
AnnaBridge 167:e84263d55307 726 volatile uint32_t tmpval = huart->Instance->DR; // Clear FE flag
AnnaBridge 167:e84263d55307 727 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) {
AnnaBridge 167:e84263d55307 728 volatile uint32_t tmpval = huart->Instance->DR; // Clear NE flag
AnnaBridge 167:e84263d55307 729 } else if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 167:e84263d55307 730 volatile uint32_t tmpval = huart->Instance->DR; // Clear ORE flag
AnnaBridge 167:e84263d55307 731 }
AnnaBridge 167:e84263d55307 732 }
AnnaBridge 167:e84263d55307 733
AnnaBridge 167:e84263d55307 734 /**
AnnaBridge 167:e84263d55307 735 * The asynchronous TX and RX handler.
AnnaBridge 167:e84263d55307 736 *
AnnaBridge 167:e84263d55307 737 * @param obj The serial object
AnnaBridge 167:e84263d55307 738 * @return Returns event flags if a TX/RX transfer termination condition was met or 0 otherwise
AnnaBridge 167:e84263d55307 739 */
AnnaBridge 167:e84263d55307 740 int serial_irq_handler_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 741 {
AnnaBridge 167:e84263d55307 742 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 743 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 744
AnnaBridge 167:e84263d55307 745 volatile int return_event = 0;
AnnaBridge 167:e84263d55307 746 uint8_t *buf = (uint8_t*)(obj->rx_buff.buffer);
AnnaBridge 167:e84263d55307 747 uint8_t i = 0;
AnnaBridge 167:e84263d55307 748
AnnaBridge 167:e84263d55307 749 // TX PART:
AnnaBridge 167:e84263d55307 750 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
AnnaBridge 167:e84263d55307 751 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
AnnaBridge 167:e84263d55307 752 // Return event SERIAL_EVENT_TX_COMPLETE if requested
AnnaBridge 167:e84263d55307 753 if ((obj_s->events & SERIAL_EVENT_TX_COMPLETE ) != 0) {
AnnaBridge 167:e84263d55307 754 return_event |= (SERIAL_EVENT_TX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 755 }
AnnaBridge 167:e84263d55307 756 }
AnnaBridge 167:e84263d55307 757 }
AnnaBridge 167:e84263d55307 758
AnnaBridge 167:e84263d55307 759 // Handle error events
AnnaBridge 167:e84263d55307 760 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
AnnaBridge 167:e84263d55307 761 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 762 return_event |= (SERIAL_EVENT_RX_PARITY_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 763 }
AnnaBridge 167:e84263d55307 764 }
AnnaBridge 167:e84263d55307 765
AnnaBridge 167:e84263d55307 766 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
AnnaBridge 167:e84263d55307 767 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 768 return_event |= (SERIAL_EVENT_RX_FRAMING_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 769 }
AnnaBridge 167:e84263d55307 770 }
AnnaBridge 167:e84263d55307 771
AnnaBridge 167:e84263d55307 772 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
AnnaBridge 167:e84263d55307 773 if (__HAL_UART_GET_IT_SOURCE(huart, USART_IT_ERR) != RESET) {
AnnaBridge 167:e84263d55307 774 return_event |= (SERIAL_EVENT_RX_OVERRUN_ERROR & obj_s->events);
AnnaBridge 167:e84263d55307 775 }
AnnaBridge 167:e84263d55307 776 }
AnnaBridge 167:e84263d55307 777
AnnaBridge 167:e84263d55307 778 HAL_UART_IRQHandler(huart);
AnnaBridge 167:e84263d55307 779
AnnaBridge 167:e84263d55307 780 // Abort if an error occurs
AnnaBridge 167:e84263d55307 781 if (return_event & SERIAL_EVENT_RX_PARITY_ERROR ||
AnnaBridge 167:e84263d55307 782 return_event & SERIAL_EVENT_RX_FRAMING_ERROR ||
AnnaBridge 167:e84263d55307 783 return_event & SERIAL_EVENT_RX_OVERRUN_ERROR) {
AnnaBridge 167:e84263d55307 784 return return_event;
AnnaBridge 167:e84263d55307 785 }
AnnaBridge 167:e84263d55307 786
AnnaBridge 167:e84263d55307 787 //RX PART
AnnaBridge 167:e84263d55307 788 if (huart->RxXferSize != 0) {
AnnaBridge 167:e84263d55307 789 obj->rx_buff.pos = huart->RxXferSize - huart->RxXferCount;
AnnaBridge 167:e84263d55307 790 }
AnnaBridge 167:e84263d55307 791 if ((huart->RxXferCount == 0) && (obj->rx_buff.pos >= (obj->rx_buff.length - 1))) {
AnnaBridge 167:e84263d55307 792 return_event |= (SERIAL_EVENT_RX_COMPLETE & obj_s->events);
AnnaBridge 167:e84263d55307 793 }
AnnaBridge 167:e84263d55307 794
AnnaBridge 167:e84263d55307 795 // Check if char_match is present
AnnaBridge 167:e84263d55307 796 if (obj_s->events & SERIAL_EVENT_RX_CHARACTER_MATCH) {
AnnaBridge 167:e84263d55307 797 if (buf != NULL) {
AnnaBridge 167:e84263d55307 798 for (i = 0; i < obj->rx_buff.pos; i++) {
AnnaBridge 167:e84263d55307 799 if (buf[i] == obj->char_match) {
AnnaBridge 167:e84263d55307 800 obj->rx_buff.pos = i;
AnnaBridge 167:e84263d55307 801 return_event |= (SERIAL_EVENT_RX_CHARACTER_MATCH & obj_s->events);
AnnaBridge 167:e84263d55307 802 serial_rx_abort_asynch(obj);
AnnaBridge 167:e84263d55307 803 break;
AnnaBridge 167:e84263d55307 804 }
AnnaBridge 167:e84263d55307 805 }
AnnaBridge 167:e84263d55307 806 }
AnnaBridge 167:e84263d55307 807 }
AnnaBridge 167:e84263d55307 808
AnnaBridge 167:e84263d55307 809 return return_event;
AnnaBridge 167:e84263d55307 810 }
AnnaBridge 167:e84263d55307 811
AnnaBridge 167:e84263d55307 812 /**
AnnaBridge 167:e84263d55307 813 * Abort the ongoing TX transaction. It disables the enabled interupt for TX and
AnnaBridge 167:e84263d55307 814 * flush TX hardware buffer if TX FIFO is used
AnnaBridge 167:e84263d55307 815 *
AnnaBridge 167:e84263d55307 816 * @param obj The serial object
AnnaBridge 167:e84263d55307 817 */
AnnaBridge 167:e84263d55307 818 void serial_tx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 819 {
AnnaBridge 167:e84263d55307 820 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 821 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 822
AnnaBridge 167:e84263d55307 823 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
AnnaBridge 167:e84263d55307 824 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
AnnaBridge 167:e84263d55307 825
AnnaBridge 167:e84263d55307 826 // clear flags
AnnaBridge 167:e84263d55307 827 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
AnnaBridge 167:e84263d55307 828
AnnaBridge 167:e84263d55307 829 // reset states
AnnaBridge 167:e84263d55307 830 huart->TxXferCount = 0;
AnnaBridge 167:e84263d55307 831 // update handle state
AnnaBridge 167:e84263d55307 832 if(huart->gState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 833 huart->gState = HAL_UART_STATE_BUSY_RX;
AnnaBridge 167:e84263d55307 834 } else {
AnnaBridge 167:e84263d55307 835 huart->gState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 836 }
AnnaBridge 167:e84263d55307 837 }
AnnaBridge 167:e84263d55307 838
AnnaBridge 167:e84263d55307 839 /**
AnnaBridge 167:e84263d55307 840 * Abort the ongoing RX transaction It disables the enabled interrupt for RX and
AnnaBridge 167:e84263d55307 841 * flush RX hardware buffer if RX FIFO is used
AnnaBridge 167:e84263d55307 842 *
AnnaBridge 167:e84263d55307 843 * @param obj The serial object
AnnaBridge 167:e84263d55307 844 */
AnnaBridge 167:e84263d55307 845 void serial_rx_abort_asynch(serial_t *obj)
AnnaBridge 167:e84263d55307 846 {
AnnaBridge 167:e84263d55307 847 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 848 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
AnnaBridge 167:e84263d55307 849
AnnaBridge 167:e84263d55307 850 // disable interrupts
AnnaBridge 167:e84263d55307 851 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
AnnaBridge 167:e84263d55307 852 __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
AnnaBridge 167:e84263d55307 853 __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
AnnaBridge 167:e84263d55307 854
AnnaBridge 167:e84263d55307 855 // clear flags
AnnaBridge 167:e84263d55307 856 __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_RXNE);
AnnaBridge 167:e84263d55307 857 volatile uint32_t tmpval = huart->Instance->DR; // Clear error flags
AnnaBridge 167:e84263d55307 858
AnnaBridge 167:e84263d55307 859 // reset states
AnnaBridge 167:e84263d55307 860 huart->RxXferCount = 0;
AnnaBridge 167:e84263d55307 861 // update handle state
AnnaBridge 167:e84263d55307 862 if(huart->RxState == HAL_UART_STATE_BUSY_TX_RX) {
AnnaBridge 167:e84263d55307 863 huart->RxState = HAL_UART_STATE_BUSY_TX;
AnnaBridge 167:e84263d55307 864 } else {
AnnaBridge 167:e84263d55307 865 huart->RxState = HAL_UART_STATE_READY;
AnnaBridge 167:e84263d55307 866 }
AnnaBridge 167:e84263d55307 867 }
AnnaBridge 167:e84263d55307 868
AnnaBridge 167:e84263d55307 869 #endif
AnnaBridge 167:e84263d55307 870
AnnaBridge 167:e84263d55307 871 #if DEVICE_SERIAL_FC
AnnaBridge 167:e84263d55307 872
AnnaBridge 167:e84263d55307 873 /**
AnnaBridge 167:e84263d55307 874 * Set HW Control Flow
AnnaBridge 167:e84263d55307 875 * @param obj The serial object
AnnaBridge 167:e84263d55307 876 * @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS)
AnnaBridge 167:e84263d55307 877 * @param rxflow Pin for the rxflow
AnnaBridge 167:e84263d55307 878 * @param txflow Pin for the txflow
AnnaBridge 167:e84263d55307 879 */
AnnaBridge 167:e84263d55307 880 void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow)
AnnaBridge 167:e84263d55307 881 {
AnnaBridge 167:e84263d55307 882 struct serial_s *obj_s = SERIAL_S(obj);
AnnaBridge 167:e84263d55307 883
AnnaBridge 167:e84263d55307 884 // Determine the UART to use (UART_1, UART_2, ...)
AnnaBridge 167:e84263d55307 885 UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 886 UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 887
AnnaBridge 167:e84263d55307 888 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
AnnaBridge 167:e84263d55307 889 obj_s->uart = (UARTName)pinmap_merge(uart_cts, uart_rts);
AnnaBridge 167:e84263d55307 890 MBED_ASSERT(obj_s->uart != (UARTName)NC);
AnnaBridge 167:e84263d55307 891
AnnaBridge 167:e84263d55307 892 if(type == FlowControlNone) {
AnnaBridge 167:e84263d55307 893 // Disable hardware flow control
AnnaBridge 167:e84263d55307 894 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
AnnaBridge 167:e84263d55307 895 }
AnnaBridge 167:e84263d55307 896 if (type == FlowControlRTS) {
AnnaBridge 167:e84263d55307 897 // Enable RTS
AnnaBridge 167:e84263d55307 898 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 899 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS;
AnnaBridge 167:e84263d55307 900 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 901 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 902 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 903 }
AnnaBridge 167:e84263d55307 904 if (type == FlowControlCTS) {
AnnaBridge 167:e84263d55307 905 // Enable CTS
AnnaBridge 167:e84263d55307 906 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 907 obj_s->hw_flow_ctl = UART_HWCONTROL_CTS;
AnnaBridge 167:e84263d55307 908 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 909 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 910 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 911 }
AnnaBridge 167:e84263d55307 912 if (type == FlowControlRTSCTS) {
AnnaBridge 167:e84263d55307 913 // Enable CTS & RTS
AnnaBridge 167:e84263d55307 914 MBED_ASSERT(uart_rts != (UARTName)NC);
AnnaBridge 167:e84263d55307 915 MBED_ASSERT(uart_cts != (UARTName)NC);
AnnaBridge 167:e84263d55307 916 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS_CTS;
AnnaBridge 167:e84263d55307 917 obj_s->pin_rts = rxflow;
AnnaBridge 167:e84263d55307 918 obj_s->pin_cts = txflow;
AnnaBridge 167:e84263d55307 919 // Enable the pin for CTS function
AnnaBridge 167:e84263d55307 920 pinmap_pinout(txflow, PinMap_UART_CTS);
AnnaBridge 167:e84263d55307 921 // Enable the pin for RTS function
AnnaBridge 167:e84263d55307 922 pinmap_pinout(rxflow, PinMap_UART_RTS);
AnnaBridge 167:e84263d55307 923 }
AnnaBridge 167:e84263d55307 924
AnnaBridge 167:e84263d55307 925 init_uart(obj);
AnnaBridge 167:e84263d55307 926 }
AnnaBridge 167:e84263d55307 927
AnnaBridge 167:e84263d55307 928 #endif
AnnaBridge 167:e84263d55307 929
AnnaBridge 167:e84263d55307 930 #endif