EL4121 Embedded System / mbed-os

mbed-os

Dependents:   cobaLCDJoyMotor_Thread odometry_omni_3roda_v3 odometry_omni_3roda_v1 odometry_omni_3roda_v2 ... more

targets/TARGET_STM/TARGET_STM32F3/serial_device.c@0:b74591d5ab33, 2017-12-11 (annotated)

Committer:
be_bryan
Date:
Mon Dec 11 17:54:04 2017 +0000
Revision:
0:b74591d5ab33
motor ++

Who changed what in which revision?

UserRevisionLine numberNew contents of line
be_bryan 0:b74591d5ab33 1 /* mbed Microcontroller Library
be_bryan 0:b74591d5ab33 2 *******************************************************************************
be_bryan 0:b74591d5ab33 3 * Copyright (c) 2014, STMicroelectronics
be_bryan 0:b74591d5ab33 4 * All rights reserved.
be_bryan 0:b74591d5ab33 5 *
be_bryan 0:b74591d5ab33 6 * Redistribution and use in source and binary forms, with or without
be_bryan 0:b74591d5ab33 7 * modification, are permitted provided that the following conditions are met:
be_bryan 0:b74591d5ab33 8 *
be_bryan 0:b74591d5ab33 9 * 1. Redistributions of source code must retain the above copyright notice,
be_bryan 0:b74591d5ab33 10 * this list of conditions and the following disclaimer.
be_bryan 0:b74591d5ab33 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
be_bryan 0:b74591d5ab33 12 * this list of conditions and the following disclaimer in the documentation
be_bryan 0:b74591d5ab33 13 * and/or other materials provided with the distribution.
be_bryan 0:b74591d5ab33 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
be_bryan 0:b74591d5ab33 15 * may be used to endorse or promote products derived from this software
be_bryan 0:b74591d5ab33 16 * without specific prior written permission.
be_bryan 0:b74591d5ab33 17 *
be_bryan 0:b74591d5ab33 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
be_bryan 0:b74591d5ab33 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
be_bryan 0:b74591d5ab33 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
be_bryan 0:b74591d5ab33 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
be_bryan 0:b74591d5ab33 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
be_bryan 0:b74591d5ab33 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
be_bryan 0:b74591d5ab33 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
be_bryan 0:b74591d5ab33 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
be_bryan 0:b74591d5ab33 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
be_bryan 0:b74591d5ab33 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
be_bryan 0:b74591d5ab33 28 *******************************************************************************
be_bryan 0:b74591d5ab33 29 */
be_bryan 0:b74591d5ab33 30 #include "mbed_assert.h"
be_bryan 0:b74591d5ab33 31 #include "serial_api.h"
be_bryan 0:b74591d5ab33 32 #include "serial_api_hal.h"
be_bryan 0:b74591d5ab33 33
be_bryan 0:b74591d5ab33 34 #if DEVICE_SERIAL
be_bryan 0:b74591d5ab33 35
be_bryan 0:b74591d5ab33 36 #include "cmsis.h"
be_bryan 0:b74591d5ab33 37 #include "pinmap.h"
be_bryan 0:b74591d5ab33 38 #include <string.h>
be_bryan 0:b74591d5ab33 39 #include "PeripheralPins.h"
be_bryan 0:b74591d5ab33 40 #include "mbed_error.h"
be_bryan 0:b74591d5ab33 41
be_bryan 0:b74591d5ab33 42 #define UART_NUM (5)
be_bryan 0:b74591d5ab33 43
be_bryan 0:b74591d5ab33 44 static uint32_t serial_irq_ids[UART_NUM] = {0};
be_bryan 0:b74591d5ab33 45 UART_HandleTypeDef uart_handlers[UART_NUM];
be_bryan 0:b74591d5ab33 46
be_bryan 0:b74591d5ab33 47 uart_irq_handler irq_handler;
be_bryan 0:b74591d5ab33 48
be_bryan 0:b74591d5ab33 49 int stdio_uart_inited = 0;
be_bryan 0:b74591d5ab33 50 serial_t stdio_uart;
be_bryan 0:b74591d5ab33 51
be_bryan 0:b74591d5ab33 52 void serial_init(serial_t *obj, PinName tx, PinName rx)
be_bryan 0:b74591d5ab33 53 {
be_bryan 0:b74591d5ab33 54 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 55
be_bryan 0:b74591d5ab33 56 // Determine the UART to use (UART_1, UART_2, ...)
be_bryan 0:b74591d5ab33 57 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
be_bryan 0:b74591d5ab33 58 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
be_bryan 0:b74591d5ab33 59
be_bryan 0:b74591d5ab33 60 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
be_bryan 0:b74591d5ab33 61 obj_s->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
be_bryan 0:b74591d5ab33 62 MBED_ASSERT(obj_s->uart != (UARTName)NC);
be_bryan 0:b74591d5ab33 63
be_bryan 0:b74591d5ab33 64 // Enable USART clock + switch to SystemClock
be_bryan 0:b74591d5ab33 65 if (obj_s->uart == UART_1) {
be_bryan 0:b74591d5ab33 66 __USART1_FORCE_RESET();
be_bryan 0:b74591d5ab33 67 __USART1_RELEASE_RESET();
be_bryan 0:b74591d5ab33 68 __USART1_CLK_ENABLE();
be_bryan 0:b74591d5ab33 69 #if defined(RCC_USART1CLKSOURCE_SYSCLK)
be_bryan 0:b74591d5ab33 70 __HAL_RCC_USART1_CONFIG(RCC_USART1CLKSOURCE_SYSCLK);
be_bryan 0:b74591d5ab33 71 #endif
be_bryan 0:b74591d5ab33 72 obj_s->index = 0;
be_bryan 0:b74591d5ab33 73 }
be_bryan 0:b74591d5ab33 74 #if defined(USART2_BASE)
be_bryan 0:b74591d5ab33 75 if (obj_s->uart == UART_2) {
be_bryan 0:b74591d5ab33 76 __USART2_FORCE_RESET();
be_bryan 0:b74591d5ab33 77 __USART2_RELEASE_RESET();
be_bryan 0:b74591d5ab33 78 __USART2_CLK_ENABLE();
be_bryan 0:b74591d5ab33 79 #if defined(RCC_USART2CLKSOURCE_SYSCLK)
be_bryan 0:b74591d5ab33 80 __HAL_RCC_USART2_CONFIG(RCC_USART2CLKSOURCE_SYSCLK);
be_bryan 0:b74591d5ab33 81 #endif
be_bryan 0:b74591d5ab33 82 obj_s->index = 1;
be_bryan 0:b74591d5ab33 83 }
be_bryan 0:b74591d5ab33 84 #endif
be_bryan 0:b74591d5ab33 85 #if defined(USART3_BASE)
be_bryan 0:b74591d5ab33 86 if (obj_s->uart == UART_3) {
be_bryan 0:b74591d5ab33 87 __USART3_FORCE_RESET();
be_bryan 0:b74591d5ab33 88 __USART3_RELEASE_RESET();
be_bryan 0:b74591d5ab33 89 __USART3_CLK_ENABLE();
be_bryan 0:b74591d5ab33 90 #if defined(RCC_USART3CLKSOURCE_SYSCLK)
be_bryan 0:b74591d5ab33 91 __HAL_RCC_USART3_CONFIG(RCC_USART3CLKSOURCE_SYSCLK);
be_bryan 0:b74591d5ab33 92 #endif
be_bryan 0:b74591d5ab33 93 obj_s->index = 2;
be_bryan 0:b74591d5ab33 94 }
be_bryan 0:b74591d5ab33 95 #endif
be_bryan 0:b74591d5ab33 96 #if defined(UART4_BASE)
be_bryan 0:b74591d5ab33 97 if (obj_s->uart == UART_4) {
be_bryan 0:b74591d5ab33 98 __UART4_FORCE_RESET();
be_bryan 0:b74591d5ab33 99 __UART4_RELEASE_RESET();
be_bryan 0:b74591d5ab33 100 __UART4_CLK_ENABLE();
be_bryan 0:b74591d5ab33 101 #if defined(RCC_UART4CLKSOURCE_SYSCLK)
be_bryan 0:b74591d5ab33 102 __HAL_RCC_UART4_CONFIG(RCC_UART4CLKSOURCE_SYSCLK);
be_bryan 0:b74591d5ab33 103 #endif
be_bryan 0:b74591d5ab33 104 obj_s->index = 3;
be_bryan 0:b74591d5ab33 105 }
be_bryan 0:b74591d5ab33 106 #endif
be_bryan 0:b74591d5ab33 107 #if defined(UART5_BASE)
be_bryan 0:b74591d5ab33 108 if (obj_s->uart == UART_5) {
be_bryan 0:b74591d5ab33 109 __HAL_RCC_UART5_FORCE_RESET();
be_bryan 0:b74591d5ab33 110 __HAL_RCC_UART5_RELEASE_RESET();
be_bryan 0:b74591d5ab33 111 __UART5_CLK_ENABLE();
be_bryan 0:b74591d5ab33 112 #if defined(RCC_UART5CLKSOURCE_SYSCLK)
be_bryan 0:b74591d5ab33 113 __HAL_RCC_UART5_CONFIG(RCC_UART5CLKSOURCE_SYSCLK);
be_bryan 0:b74591d5ab33 114 #endif
be_bryan 0:b74591d5ab33 115 obj_s->index = 4;
be_bryan 0:b74591d5ab33 116 }
be_bryan 0:b74591d5ab33 117 #endif
be_bryan 0:b74591d5ab33 118
be_bryan 0:b74591d5ab33 119 // Configure the UART pins
be_bryan 0:b74591d5ab33 120 pinmap_pinout(tx, PinMap_UART_TX);
be_bryan 0:b74591d5ab33 121 pinmap_pinout(rx, PinMap_UART_RX);
be_bryan 0:b74591d5ab33 122
be_bryan 0:b74591d5ab33 123 if (tx != NC) {
be_bryan 0:b74591d5ab33 124 pin_mode(tx, PullUp);
be_bryan 0:b74591d5ab33 125 }
be_bryan 0:b74591d5ab33 126 if (rx != NC) {
be_bryan 0:b74591d5ab33 127 pin_mode(rx, PullUp);
be_bryan 0:b74591d5ab33 128 }
be_bryan 0:b74591d5ab33 129
be_bryan 0:b74591d5ab33 130 // Configure UART
be_bryan 0:b74591d5ab33 131 obj_s->baudrate = 9600;
be_bryan 0:b74591d5ab33 132 obj_s->databits = UART_WORDLENGTH_8B;
be_bryan 0:b74591d5ab33 133 obj_s->stopbits = UART_STOPBITS_1;
be_bryan 0:b74591d5ab33 134 obj_s->parity = UART_PARITY_NONE;
be_bryan 0:b74591d5ab33 135
be_bryan 0:b74591d5ab33 136 #if DEVICE_SERIAL_FC
be_bryan 0:b74591d5ab33 137 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
be_bryan 0:b74591d5ab33 138 #endif
be_bryan 0:b74591d5ab33 139
be_bryan 0:b74591d5ab33 140 obj_s->pin_tx = tx;
be_bryan 0:b74591d5ab33 141 obj_s->pin_rx = rx;
be_bryan 0:b74591d5ab33 142
be_bryan 0:b74591d5ab33 143 init_uart(obj);
be_bryan 0:b74591d5ab33 144
be_bryan 0:b74591d5ab33 145 // For stdio management
be_bryan 0:b74591d5ab33 146 if (obj_s->uart == STDIO_UART) {
be_bryan 0:b74591d5ab33 147 stdio_uart_inited = 1;
be_bryan 0:b74591d5ab33 148 memcpy(&stdio_uart, obj, sizeof(serial_t));
be_bryan 0:b74591d5ab33 149 }
be_bryan 0:b74591d5ab33 150 }
be_bryan 0:b74591d5ab33 151
be_bryan 0:b74591d5ab33 152 void serial_free(serial_t *obj)
be_bryan 0:b74591d5ab33 153 {
be_bryan 0:b74591d5ab33 154 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 155
be_bryan 0:b74591d5ab33 156 // Reset UART and disable clock
be_bryan 0:b74591d5ab33 157 if (obj_s->uart == UART_1) {
be_bryan 0:b74591d5ab33 158 __USART1_FORCE_RESET();
be_bryan 0:b74591d5ab33 159 __USART1_RELEASE_RESET();
be_bryan 0:b74591d5ab33 160 __USART1_CLK_DISABLE();
be_bryan 0:b74591d5ab33 161 }
be_bryan 0:b74591d5ab33 162 if (obj_s->uart == UART_2) {
be_bryan 0:b74591d5ab33 163 __USART2_FORCE_RESET();
be_bryan 0:b74591d5ab33 164 __USART2_RELEASE_RESET();
be_bryan 0:b74591d5ab33 165 __USART2_CLK_DISABLE();
be_bryan 0:b74591d5ab33 166 }
be_bryan 0:b74591d5ab33 167 #if defined(USART3_BASE)
be_bryan 0:b74591d5ab33 168 if (obj_s->uart == UART_3) {
be_bryan 0:b74591d5ab33 169 __USART3_FORCE_RESET();
be_bryan 0:b74591d5ab33 170 __USART3_RELEASE_RESET();
be_bryan 0:b74591d5ab33 171 __USART3_CLK_DISABLE();
be_bryan 0:b74591d5ab33 172 }
be_bryan 0:b74591d5ab33 173 #endif
be_bryan 0:b74591d5ab33 174 #if defined(UART4_BASE)
be_bryan 0:b74591d5ab33 175 if (obj_s->uart == UART_4) {
be_bryan 0:b74591d5ab33 176 __UART4_FORCE_RESET();
be_bryan 0:b74591d5ab33 177 __UART4_RELEASE_RESET();
be_bryan 0:b74591d5ab33 178 __UART4_CLK_DISABLE();
be_bryan 0:b74591d5ab33 179 }
be_bryan 0:b74591d5ab33 180 #endif
be_bryan 0:b74591d5ab33 181 #if defined(UART5_BASE)
be_bryan 0:b74591d5ab33 182 if (obj_s->uart == UART_5) {
be_bryan 0:b74591d5ab33 183 __UART5_FORCE_RESET();
be_bryan 0:b74591d5ab33 184 __UART5_RELEASE_RESET();
be_bryan 0:b74591d5ab33 185 __UART5_CLK_DISABLE();
be_bryan 0:b74591d5ab33 186 }
be_bryan 0:b74591d5ab33 187 #endif
be_bryan 0:b74591d5ab33 188
be_bryan 0:b74591d5ab33 189 // Configure GPIOs
be_bryan 0:b74591d5ab33 190 pin_function(obj_s->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
be_bryan 0:b74591d5ab33 191 pin_function(obj_s->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
be_bryan 0:b74591d5ab33 192
be_bryan 0:b74591d5ab33 193 serial_irq_ids[obj_s->index] = 0;
be_bryan 0:b74591d5ab33 194 }
be_bryan 0:b74591d5ab33 195
be_bryan 0:b74591d5ab33 196 void serial_baud(serial_t *obj, int baudrate)
be_bryan 0:b74591d5ab33 197 {
be_bryan 0:b74591d5ab33 198 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 199
be_bryan 0:b74591d5ab33 200 obj_s->baudrate = baudrate;
be_bryan 0:b74591d5ab33 201 init_uart(obj);
be_bryan 0:b74591d5ab33 202 }
be_bryan 0:b74591d5ab33 203
be_bryan 0:b74591d5ab33 204 /******************************************************************************
be_bryan 0:b74591d5ab33 205 * INTERRUPTS HANDLING
be_bryan 0:b74591d5ab33 206 ******************************************************************************/
be_bryan 0:b74591d5ab33 207
be_bryan 0:b74591d5ab33 208 static void uart_irq(int id)
be_bryan 0:b74591d5ab33 209 {
be_bryan 0:b74591d5ab33 210 UART_HandleTypeDef * huart = &uart_handlers[id];
be_bryan 0:b74591d5ab33 211
be_bryan 0:b74591d5ab33 212 if (serial_irq_ids[id] != 0) {
be_bryan 0:b74591d5ab33 213 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TXE) != RESET) {
be_bryan 0:b74591d5ab33 214 if (__HAL_UART_GET_IT(huart, UART_IT_TXE) != RESET) {
be_bryan 0:b74591d5ab33 215 irq_handler(serial_irq_ids[id], TxIrq);
be_bryan 0:b74591d5ab33 216 }
be_bryan 0:b74591d5ab33 217 }
be_bryan 0:b74591d5ab33 218 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE) != RESET) {
be_bryan 0:b74591d5ab33 219 if (__HAL_UART_GET_IT(huart, UART_IT_RXNE) != RESET) {
be_bryan 0:b74591d5ab33 220 irq_handler(serial_irq_ids[id], RxIrq);
be_bryan 0:b74591d5ab33 221 /* Flag has been cleared when reading the content */
be_bryan 0:b74591d5ab33 222 }
be_bryan 0:b74591d5ab33 223 }
be_bryan 0:b74591d5ab33 224 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
be_bryan 0:b74591d5ab33 225 if (__HAL_UART_GET_IT(huart, UART_IT_ORE) != RESET) {
be_bryan 0:b74591d5ab33 226 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
be_bryan 0:b74591d5ab33 227 }
be_bryan 0:b74591d5ab33 228 }
be_bryan 0:b74591d5ab33 229 }
be_bryan 0:b74591d5ab33 230 }
be_bryan 0:b74591d5ab33 231
be_bryan 0:b74591d5ab33 232 static void uart1_irq(void)
be_bryan 0:b74591d5ab33 233 {
be_bryan 0:b74591d5ab33 234 uart_irq(0);
be_bryan 0:b74591d5ab33 235 }
be_bryan 0:b74591d5ab33 236
be_bryan 0:b74591d5ab33 237 static void uart2_irq(void)
be_bryan 0:b74591d5ab33 238 {
be_bryan 0:b74591d5ab33 239 uart_irq(1);
be_bryan 0:b74591d5ab33 240 }
be_bryan 0:b74591d5ab33 241
be_bryan 0:b74591d5ab33 242 #if defined(USART3_BASE)
be_bryan 0:b74591d5ab33 243 static void uart3_irq(void)
be_bryan 0:b74591d5ab33 244 {
be_bryan 0:b74591d5ab33 245 uart_irq(2);
be_bryan 0:b74591d5ab33 246 }
be_bryan 0:b74591d5ab33 247 #endif
be_bryan 0:b74591d5ab33 248
be_bryan 0:b74591d5ab33 249 #if defined(UART4_BASE)
be_bryan 0:b74591d5ab33 250 static void uart4_irq(void)
be_bryan 0:b74591d5ab33 251 {
be_bryan 0:b74591d5ab33 252 uart_irq(3);
be_bryan 0:b74591d5ab33 253 }
be_bryan 0:b74591d5ab33 254 #endif
be_bryan 0:b74591d5ab33 255
be_bryan 0:b74591d5ab33 256 #if defined(UART5_BASE)
be_bryan 0:b74591d5ab33 257 static void uart5_irq(void)
be_bryan 0:b74591d5ab33 258 {
be_bryan 0:b74591d5ab33 259 uart_irq(4);
be_bryan 0:b74591d5ab33 260 }
be_bryan 0:b74591d5ab33 261 #endif
be_bryan 0:b74591d5ab33 262
be_bryan 0:b74591d5ab33 263 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
be_bryan 0:b74591d5ab33 264 {
be_bryan 0:b74591d5ab33 265 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 266
be_bryan 0:b74591d5ab33 267 irq_handler = handler;
be_bryan 0:b74591d5ab33 268 serial_irq_ids[obj_s->index] = id;
be_bryan 0:b74591d5ab33 269 }
be_bryan 0:b74591d5ab33 270
be_bryan 0:b74591d5ab33 271 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
be_bryan 0:b74591d5ab33 272 {
be_bryan 0:b74591d5ab33 273 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 274 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
be_bryan 0:b74591d5ab33 275 IRQn_Type irq_n = (IRQn_Type)0;
be_bryan 0:b74591d5ab33 276 uint32_t vector = 0;
be_bryan 0:b74591d5ab33 277
be_bryan 0:b74591d5ab33 278 if (obj_s->uart == UART_1) {
be_bryan 0:b74591d5ab33 279 irq_n = USART1_IRQn;
be_bryan 0:b74591d5ab33 280 vector = (uint32_t)&uart1_irq;
be_bryan 0:b74591d5ab33 281 }
be_bryan 0:b74591d5ab33 282
be_bryan 0:b74591d5ab33 283 if (obj_s->uart == UART_2) {
be_bryan 0:b74591d5ab33 284 irq_n = USART2_IRQn;
be_bryan 0:b74591d5ab33 285 vector = (uint32_t)&uart2_irq;
be_bryan 0:b74591d5ab33 286 }
be_bryan 0:b74591d5ab33 287
be_bryan 0:b74591d5ab33 288 #if defined(USART3_BASE)
be_bryan 0:b74591d5ab33 289 if (obj_s->uart == UART_3) {
be_bryan 0:b74591d5ab33 290 irq_n = USART3_IRQn;
be_bryan 0:b74591d5ab33 291 vector = (uint32_t)&uart3_irq;
be_bryan 0:b74591d5ab33 292 }
be_bryan 0:b74591d5ab33 293 #endif
be_bryan 0:b74591d5ab33 294
be_bryan 0:b74591d5ab33 295 #if defined(UART4_BASE)
be_bryan 0:b74591d5ab33 296 if (obj_s->uart == UART_4) {
be_bryan 0:b74591d5ab33 297 irq_n = UART4_IRQn;
be_bryan 0:b74591d5ab33 298 vector = (uint32_t)&uart4_irq;
be_bryan 0:b74591d5ab33 299 }
be_bryan 0:b74591d5ab33 300 #endif
be_bryan 0:b74591d5ab33 301
be_bryan 0:b74591d5ab33 302 #if defined(UART5_BASE)
be_bryan 0:b74591d5ab33 303 if (obj_s->uart == UART_5) {
be_bryan 0:b74591d5ab33 304 irq_n = UART5_IRQn;
be_bryan 0:b74591d5ab33 305 vector = (uint32_t)&uart5_irq;
be_bryan 0:b74591d5ab33 306 }
be_bryan 0:b74591d5ab33 307 #endif
be_bryan 0:b74591d5ab33 308
be_bryan 0:b74591d5ab33 309 if (enable) {
be_bryan 0:b74591d5ab33 310 if (irq == RxIrq) {
be_bryan 0:b74591d5ab33 311 __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
be_bryan 0:b74591d5ab33 312 } else { // TxIrq
be_bryan 0:b74591d5ab33 313 __HAL_UART_ENABLE_IT(huart, UART_IT_TXE);
be_bryan 0:b74591d5ab33 314 }
be_bryan 0:b74591d5ab33 315 NVIC_SetVector(irq_n, vector);
be_bryan 0:b74591d5ab33 316 NVIC_EnableIRQ(irq_n);
be_bryan 0:b74591d5ab33 317
be_bryan 0:b74591d5ab33 318 } else { // disable
be_bryan 0:b74591d5ab33 319 int all_disabled = 0;
be_bryan 0:b74591d5ab33 320 if (irq == RxIrq) {
be_bryan 0:b74591d5ab33 321 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
be_bryan 0:b74591d5ab33 322 // Check if TxIrq is disabled too
be_bryan 0:b74591d5ab33 323 if ((huart->Instance->CR1 & USART_CR1_TXEIE) == 0) {
be_bryan 0:b74591d5ab33 324 all_disabled = 1;
be_bryan 0:b74591d5ab33 325 }
be_bryan 0:b74591d5ab33 326 } else { // TxIrq
be_bryan 0:b74591d5ab33 327 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
be_bryan 0:b74591d5ab33 328 // Check if RxIrq is disabled too
be_bryan 0:b74591d5ab33 329 if ((huart->Instance->CR1 & USART_CR1_RXNEIE) == 0) {
be_bryan 0:b74591d5ab33 330 all_disabled = 1;
be_bryan 0:b74591d5ab33 331 }
be_bryan 0:b74591d5ab33 332 }
be_bryan 0:b74591d5ab33 333
be_bryan 0:b74591d5ab33 334 if (all_disabled) {
be_bryan 0:b74591d5ab33 335 NVIC_DisableIRQ(irq_n);
be_bryan 0:b74591d5ab33 336 }
be_bryan 0:b74591d5ab33 337 }
be_bryan 0:b74591d5ab33 338 }
be_bryan 0:b74591d5ab33 339
be_bryan 0:b74591d5ab33 340 /******************************************************************************
be_bryan 0:b74591d5ab33 341 * READ/WRITE
be_bryan 0:b74591d5ab33 342 ******************************************************************************/
be_bryan 0:b74591d5ab33 343
be_bryan 0:b74591d5ab33 344 int serial_getc(serial_t *obj)
be_bryan 0:b74591d5ab33 345 {
be_bryan 0:b74591d5ab33 346 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 347 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
be_bryan 0:b74591d5ab33 348
be_bryan 0:b74591d5ab33 349 while (!serial_readable(obj));
be_bryan 0:b74591d5ab33 350 if (obj_s->databits == UART_WORDLENGTH_8B) {
be_bryan 0:b74591d5ab33 351 return (int)(huart->Instance->RDR & (uint8_t)0xFF);
be_bryan 0:b74591d5ab33 352 } else {
be_bryan 0:b74591d5ab33 353 return (int)(huart->Instance->RDR & (uint16_t)0x1FF);
be_bryan 0:b74591d5ab33 354 }
be_bryan 0:b74591d5ab33 355 }
be_bryan 0:b74591d5ab33 356
be_bryan 0:b74591d5ab33 357 void serial_putc(serial_t *obj, int c)
be_bryan 0:b74591d5ab33 358 {
be_bryan 0:b74591d5ab33 359 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 360 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
be_bryan 0:b74591d5ab33 361
be_bryan 0:b74591d5ab33 362 while (!serial_writable(obj));
be_bryan 0:b74591d5ab33 363 if (obj_s->databits == UART_WORDLENGTH_8B) {
be_bryan 0:b74591d5ab33 364 huart->Instance->TDR = (uint8_t)(c & (uint8_t)0xFF);
be_bryan 0:b74591d5ab33 365 } else {
be_bryan 0:b74591d5ab33 366 huart->Instance->TDR = (uint16_t)(c & (uint16_t)0x1FF);
be_bryan 0:b74591d5ab33 367 }
be_bryan 0:b74591d5ab33 368 }
be_bryan 0:b74591d5ab33 369
be_bryan 0:b74591d5ab33 370 void serial_clear(serial_t *obj)
be_bryan 0:b74591d5ab33 371 {
be_bryan 0:b74591d5ab33 372 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 373 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
be_bryan 0:b74591d5ab33 374
be_bryan 0:b74591d5ab33 375 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
be_bryan 0:b74591d5ab33 376 __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
be_bryan 0:b74591d5ab33 377 }
be_bryan 0:b74591d5ab33 378
be_bryan 0:b74591d5ab33 379 void serial_break_set(serial_t *obj)
be_bryan 0:b74591d5ab33 380 {
be_bryan 0:b74591d5ab33 381 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 382 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
be_bryan 0:b74591d5ab33 383
be_bryan 0:b74591d5ab33 384 HAL_LIN_SendBreak(huart);
be_bryan 0:b74591d5ab33 385 }
be_bryan 0:b74591d5ab33 386
be_bryan 0:b74591d5ab33 387 #if DEVICE_SERIAL_ASYNCH
be_bryan 0:b74591d5ab33 388
be_bryan 0:b74591d5ab33 389 /******************************************************************************
be_bryan 0:b74591d5ab33 390 * LOCAL HELPER FUNCTIONS
be_bryan 0:b74591d5ab33 391 ******************************************************************************/
be_bryan 0:b74591d5ab33 392
be_bryan 0:b74591d5ab33 393 /**
be_bryan 0:b74591d5ab33 394 * Configure the TX buffer for an asynchronous write serial transaction
be_bryan 0:b74591d5ab33 395 *
be_bryan 0:b74591d5ab33 396 * @param obj The serial object.
be_bryan 0:b74591d5ab33 397 * @param tx The buffer for sending.
be_bryan 0:b74591d5ab33 398 * @param tx_length The number of words to transmit.
be_bryan 0:b74591d5ab33 399 */
be_bryan 0:b74591d5ab33 400 static void serial_tx_buffer_set(serial_t *obj, void *tx, int tx_length, uint8_t width)
be_bryan 0:b74591d5ab33 401 {
be_bryan 0:b74591d5ab33 402 (void)width;
be_bryan 0:b74591d5ab33 403
be_bryan 0:b74591d5ab33 404 // Exit if a transmit is already on-going
be_bryan 0:b74591d5ab33 405 if (serial_tx_active(obj)) {
be_bryan 0:b74591d5ab33 406 return;
be_bryan 0:b74591d5ab33 407 }
be_bryan 0:b74591d5ab33 408
be_bryan 0:b74591d5ab33 409 obj->tx_buff.buffer = tx;
be_bryan 0:b74591d5ab33 410 obj->tx_buff.length = tx_length;
be_bryan 0:b74591d5ab33 411 obj->tx_buff.pos = 0;
be_bryan 0:b74591d5ab33 412 }
be_bryan 0:b74591d5ab33 413
be_bryan 0:b74591d5ab33 414 /**
be_bryan 0:b74591d5ab33 415 * Configure the RX buffer for an asynchronous write serial transaction
be_bryan 0:b74591d5ab33 416 *
be_bryan 0:b74591d5ab33 417 * @param obj The serial object.
be_bryan 0:b74591d5ab33 418 * @param tx The buffer for sending.
be_bryan 0:b74591d5ab33 419 * @param tx_length The number of words to transmit.
be_bryan 0:b74591d5ab33 420 */
be_bryan 0:b74591d5ab33 421 static void serial_rx_buffer_set(serial_t *obj, void *rx, int rx_length, uint8_t width)
be_bryan 0:b74591d5ab33 422 {
be_bryan 0:b74591d5ab33 423 (void)width;
be_bryan 0:b74591d5ab33 424
be_bryan 0:b74591d5ab33 425 // Exit if a reception is already on-going
be_bryan 0:b74591d5ab33 426 if (serial_rx_active(obj)) {
be_bryan 0:b74591d5ab33 427 return;
be_bryan 0:b74591d5ab33 428 }
be_bryan 0:b74591d5ab33 429
be_bryan 0:b74591d5ab33 430 obj->rx_buff.buffer = rx;
be_bryan 0:b74591d5ab33 431 obj->rx_buff.length = rx_length;
be_bryan 0:b74591d5ab33 432 obj->rx_buff.pos = 0;
be_bryan 0:b74591d5ab33 433 }
be_bryan 0:b74591d5ab33 434
be_bryan 0:b74591d5ab33 435 /**
be_bryan 0:b74591d5ab33 436 * Configure events
be_bryan 0:b74591d5ab33 437 *
be_bryan 0:b74591d5ab33 438 * @param obj The serial object
be_bryan 0:b74591d5ab33 439 * @param event The logical OR of the events to configure
be_bryan 0:b74591d5ab33 440 * @param enable Set to non-zero to enable events, or zero to disable them
be_bryan 0:b74591d5ab33 441 */
be_bryan 0:b74591d5ab33 442 static void serial_enable_event(serial_t *obj, int event, uint8_t enable)
be_bryan 0:b74591d5ab33 443 {
be_bryan 0:b74591d5ab33 444 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 445
be_bryan 0:b74591d5ab33 446 // Shouldn't have to enable interrupt here, just need to keep track of the requested events.
be_bryan 0:b74591d5ab33 447 if (enable) {
be_bryan 0:b74591d5ab33 448 obj_s->events |= event;
be_bryan 0:b74591d5ab33 449 } else {
be_bryan 0:b74591d5ab33 450 obj_s->events &= ~event;
be_bryan 0:b74591d5ab33 451 }
be_bryan 0:b74591d5ab33 452 }
be_bryan 0:b74591d5ab33 453
be_bryan 0:b74591d5ab33 454
be_bryan 0:b74591d5ab33 455 /**
be_bryan 0:b74591d5ab33 456 * Get index of serial object TX IRQ, relating it to the physical peripheral.
be_bryan 0:b74591d5ab33 457 *
be_bryan 0:b74591d5ab33 458 * @param obj pointer to serial object
be_bryan 0:b74591d5ab33 459 * @return internal NVIC TX IRQ index of U(S)ART peripheral
be_bryan 0:b74591d5ab33 460 */
be_bryan 0:b74591d5ab33 461 static IRQn_Type serial_get_irq_n(serial_t *obj)
be_bryan 0:b74591d5ab33 462 {
be_bryan 0:b74591d5ab33 463 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 464 IRQn_Type irq_n;
be_bryan 0:b74591d5ab33 465
be_bryan 0:b74591d5ab33 466 switch (obj_s->index) {
be_bryan 0:b74591d5ab33 467 case 0:
be_bryan 0:b74591d5ab33 468 irq_n = USART1_IRQn;
be_bryan 0:b74591d5ab33 469 break;
be_bryan 0:b74591d5ab33 470
be_bryan 0:b74591d5ab33 471 case 1:
be_bryan 0:b74591d5ab33 472 irq_n = USART2_IRQn;
be_bryan 0:b74591d5ab33 473 break;
be_bryan 0:b74591d5ab33 474
be_bryan 0:b74591d5ab33 475 #if defined(USART3_BASE)
be_bryan 0:b74591d5ab33 476 case 2:
be_bryan 0:b74591d5ab33 477 irq_n = USART3_IRQn;
be_bryan 0:b74591d5ab33 478 break;
be_bryan 0:b74591d5ab33 479 #endif
be_bryan 0:b74591d5ab33 480 #if defined(UART4_BASE)
be_bryan 0:b74591d5ab33 481 case 3:
be_bryan 0:b74591d5ab33 482 irq_n = UART4_IRQn;
be_bryan 0:b74591d5ab33 483 break;
be_bryan 0:b74591d5ab33 484 #endif
be_bryan 0:b74591d5ab33 485 #if defined(UART5_BASE)
be_bryan 0:b74591d5ab33 486 case 4:
be_bryan 0:b74591d5ab33 487 irq_n = UART5_IRQn;
be_bryan 0:b74591d5ab33 488 break;
be_bryan 0:b74591d5ab33 489 #endif
be_bryan 0:b74591d5ab33 490 default:
be_bryan 0:b74591d5ab33 491 irq_n = (IRQn_Type)0;
be_bryan 0:b74591d5ab33 492 }
be_bryan 0:b74591d5ab33 493
be_bryan 0:b74591d5ab33 494 return irq_n;
be_bryan 0:b74591d5ab33 495 }
be_bryan 0:b74591d5ab33 496
be_bryan 0:b74591d5ab33 497
be_bryan 0:b74591d5ab33 498 /******************************************************************************
be_bryan 0:b74591d5ab33 499 * MBED API FUNCTIONS
be_bryan 0:b74591d5ab33 500 ******************************************************************************/
be_bryan 0:b74591d5ab33 501
be_bryan 0:b74591d5ab33 502 /**
be_bryan 0:b74591d5ab33 503 * Begin asynchronous TX transfer. The used buffer is specified in the serial
be_bryan 0:b74591d5ab33 504 * object, tx_buff
be_bryan 0:b74591d5ab33 505 *
be_bryan 0:b74591d5ab33 506 * @param obj The serial object
be_bryan 0:b74591d5ab33 507 * @param tx The buffer for sending
be_bryan 0:b74591d5ab33 508 * @param tx_length The number of words to transmit
be_bryan 0:b74591d5ab33 509 * @param tx_width The bit width of buffer word
be_bryan 0:b74591d5ab33 510 * @param handler The serial handler
be_bryan 0:b74591d5ab33 511 * @param event The logical OR of events to be registered
be_bryan 0:b74591d5ab33 512 * @param hint A suggestion for how to use DMA with this transfer
be_bryan 0:b74591d5ab33 513 * @return Returns number of data transfered, or 0 otherwise
be_bryan 0:b74591d5ab33 514 */
be_bryan 0:b74591d5ab33 515 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)
be_bryan 0:b74591d5ab33 516 {
be_bryan 0:b74591d5ab33 517 // TODO: DMA usage is currently ignored
be_bryan 0:b74591d5ab33 518 (void) hint;
be_bryan 0:b74591d5ab33 519
be_bryan 0:b74591d5ab33 520 // Check buffer is ok
be_bryan 0:b74591d5ab33 521 MBED_ASSERT(tx != (void*)0);
be_bryan 0:b74591d5ab33 522 MBED_ASSERT(tx_width == 8); // support only 8b width
be_bryan 0:b74591d5ab33 523
be_bryan 0:b74591d5ab33 524 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 525 UART_HandleTypeDef * huart = &uart_handlers[obj_s->index];
be_bryan 0:b74591d5ab33 526
be_bryan 0:b74591d5ab33 527 if (tx_length == 0) {
be_bryan 0:b74591d5ab33 528 return 0;
be_bryan 0:b74591d5ab33 529 }
be_bryan 0:b74591d5ab33 530
be_bryan 0:b74591d5ab33 531 // Set up buffer
be_bryan 0:b74591d5ab33 532 serial_tx_buffer_set(obj, (void *)tx, tx_length, tx_width);
be_bryan 0:b74591d5ab33 533
be_bryan 0:b74591d5ab33 534 // Set up events
be_bryan 0:b74591d5ab33 535 serial_enable_event(obj, SERIAL_EVENT_TX_ALL, 0); // Clear all events
be_bryan 0:b74591d5ab33 536 serial_enable_event(obj, event, 1); // Set only the wanted events
be_bryan 0:b74591d5ab33 537
be_bryan 0:b74591d5ab33 538 // Enable interrupt
be_bryan 0:b74591d5ab33 539 IRQn_Type irq_n = serial_get_irq_n(obj);
be_bryan 0:b74591d5ab33 540 NVIC_ClearPendingIRQ(irq_n);
be_bryan 0:b74591d5ab33 541 NVIC_DisableIRQ(irq_n);
be_bryan 0:b74591d5ab33 542 NVIC_SetPriority(irq_n, 1);
be_bryan 0:b74591d5ab33 543 NVIC_SetVector(irq_n, (uint32_t)handler);
be_bryan 0:b74591d5ab33 544 NVIC_EnableIRQ(irq_n);
be_bryan 0:b74591d5ab33 545
be_bryan 0:b74591d5ab33 546 // the following function will enable UART_IT_TXE and error interrupts
be_bryan 0:b74591d5ab33 547 if (HAL_UART_Transmit_IT(huart, (uint8_t*)tx, tx_length) != HAL_OK) {
be_bryan 0:b74591d5ab33 548 return 0;
be_bryan 0:b74591d5ab33 549 }
be_bryan 0:b74591d5ab33 550
be_bryan 0:b74591d5ab33 551 return tx_length;
be_bryan 0:b74591d5ab33 552 }
be_bryan 0:b74591d5ab33 553
be_bryan 0:b74591d5ab33 554 /**
be_bryan 0:b74591d5ab33 555 * Begin asynchronous RX transfer (enable interrupt for data collecting)
be_bryan 0:b74591d5ab33 556 * The used buffer is specified in the serial object, rx_buff
be_bryan 0:b74591d5ab33 557 *
be_bryan 0:b74591d5ab33 558 * @param obj The serial object
be_bryan 0:b74591d5ab33 559 * @param rx The buffer for sending
be_bryan 0:b74591d5ab33 560 * @param rx_length The number of words to transmit
be_bryan 0:b74591d5ab33 561 * @param rx_width The bit width of buffer word
be_bryan 0:b74591d5ab33 562 * @param handler The serial handler
be_bryan 0:b74591d5ab33 563 * @param event The logical OR of events to be registered
be_bryan 0:b74591d5ab33 564 * @param handler The serial handler
be_bryan 0:b74591d5ab33 565 * @param char_match A character in range 0-254 to be matched
be_bryan 0:b74591d5ab33 566 * @param hint A suggestion for how to use DMA with this transfer
be_bryan 0:b74591d5ab33 567 */
be_bryan 0:b74591d5ab33 568 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)
be_bryan 0:b74591d5ab33 569 {
be_bryan 0:b74591d5ab33 570 // TODO: DMA usage is currently ignored
be_bryan 0:b74591d5ab33 571 (void) hint;
be_bryan 0:b74591d5ab33 572
be_bryan 0:b74591d5ab33 573 /* Sanity check arguments */
be_bryan 0:b74591d5ab33 574 MBED_ASSERT(obj);
be_bryan 0:b74591d5ab33 575 MBED_ASSERT(rx != (void*)0);
be_bryan 0:b74591d5ab33 576 MBED_ASSERT(rx_width == 8); // support only 8b width
be_bryan 0:b74591d5ab33 577
be_bryan 0:b74591d5ab33 578 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 579 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
be_bryan 0:b74591d5ab33 580
be_bryan 0:b74591d5ab33 581 serial_enable_event(obj, SERIAL_EVENT_RX_ALL, 0);
be_bryan 0:b74591d5ab33 582 serial_enable_event(obj, event, 1);
be_bryan 0:b74591d5ab33 583
be_bryan 0:b74591d5ab33 584 // set CharMatch
be_bryan 0:b74591d5ab33 585 obj->char_match = char_match;
be_bryan 0:b74591d5ab33 586
be_bryan 0:b74591d5ab33 587 serial_rx_buffer_set(obj, rx, rx_length, rx_width);
be_bryan 0:b74591d5ab33 588
be_bryan 0:b74591d5ab33 589 IRQn_Type irq_n = serial_get_irq_n(obj);
be_bryan 0:b74591d5ab33 590 NVIC_ClearPendingIRQ(irq_n);
be_bryan 0:b74591d5ab33 591 NVIC_DisableIRQ(irq_n);
be_bryan 0:b74591d5ab33 592 NVIC_SetPriority(irq_n, 0);
be_bryan 0:b74591d5ab33 593 NVIC_SetVector(irq_n, (uint32_t)handler);
be_bryan 0:b74591d5ab33 594 NVIC_EnableIRQ(irq_n);
be_bryan 0:b74591d5ab33 595
be_bryan 0:b74591d5ab33 596 // following HAL function will enable the RXNE interrupt + error interrupts
be_bryan 0:b74591d5ab33 597 HAL_UART_Receive_IT(huart, (uint8_t*)rx, rx_length);
be_bryan 0:b74591d5ab33 598 }
be_bryan 0:b74591d5ab33 599
be_bryan 0:b74591d5ab33 600 /**
be_bryan 0:b74591d5ab33 601 * Attempts to determine if the serial peripheral is already in use for TX
be_bryan 0:b74591d5ab33 602 *
be_bryan 0:b74591d5ab33 603 * @param obj The serial object
be_bryan 0:b74591d5ab33 604 * @return Non-zero if the TX transaction is ongoing, 0 otherwise
be_bryan 0:b74591d5ab33 605 */
be_bryan 0:b74591d5ab33 606 uint8_t serial_tx_active(serial_t *obj)
be_bryan 0:b74591d5ab33 607 {
be_bryan 0:b74591d5ab33 608 MBED_ASSERT(obj);
be_bryan 0:b74591d5ab33 609
be_bryan 0:b74591d5ab33 610 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 611 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
be_bryan 0:b74591d5ab33 612
be_bryan 0:b74591d5ab33 613 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_TX) ? 1 : 0);
be_bryan 0:b74591d5ab33 614 }
be_bryan 0:b74591d5ab33 615
be_bryan 0:b74591d5ab33 616 /**
be_bryan 0:b74591d5ab33 617 * Attempts to determine if the serial peripheral is already in use for RX
be_bryan 0:b74591d5ab33 618 *
be_bryan 0:b74591d5ab33 619 * @param obj The serial object
be_bryan 0:b74591d5ab33 620 * @return Non-zero if the RX transaction is ongoing, 0 otherwise
be_bryan 0:b74591d5ab33 621 */
be_bryan 0:b74591d5ab33 622 uint8_t serial_rx_active(serial_t *obj)
be_bryan 0:b74591d5ab33 623 {
be_bryan 0:b74591d5ab33 624 MBED_ASSERT(obj);
be_bryan 0:b74591d5ab33 625
be_bryan 0:b74591d5ab33 626 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 627 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
be_bryan 0:b74591d5ab33 628
be_bryan 0:b74591d5ab33 629 return ((HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_RX) ? 1 : 0);
be_bryan 0:b74591d5ab33 630 }
be_bryan 0:b74591d5ab33 631
be_bryan 0:b74591d5ab33 632 void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) {
be_bryan 0:b74591d5ab33 633 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
be_bryan 0:b74591d5ab33 634 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
be_bryan 0:b74591d5ab33 635 }
be_bryan 0:b74591d5ab33 636 }
be_bryan 0:b74591d5ab33 637
be_bryan 0:b74591d5ab33 638 void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart) {
be_bryan 0:b74591d5ab33 639 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
be_bryan 0:b74591d5ab33 640 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_PEF);
be_bryan 0:b74591d5ab33 641 }
be_bryan 0:b74591d5ab33 642 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
be_bryan 0:b74591d5ab33 643 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_FEF);
be_bryan 0:b74591d5ab33 644 }
be_bryan 0:b74591d5ab33 645 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_NE) != RESET) {
be_bryan 0:b74591d5ab33 646 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_NEF);
be_bryan 0:b74591d5ab33 647 }
be_bryan 0:b74591d5ab33 648 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
be_bryan 0:b74591d5ab33 649 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
be_bryan 0:b74591d5ab33 650 }
be_bryan 0:b74591d5ab33 651 }
be_bryan 0:b74591d5ab33 652
be_bryan 0:b74591d5ab33 653 /**
be_bryan 0:b74591d5ab33 654 * The asynchronous TX and RX handler.
be_bryan 0:b74591d5ab33 655 *
be_bryan 0:b74591d5ab33 656 * @param obj The serial object
be_bryan 0:b74591d5ab33 657 * @return Returns event flags if a TX/RX transfer termination condition was met or 0 otherwise
be_bryan 0:b74591d5ab33 658 */
be_bryan 0:b74591d5ab33 659 int serial_irq_handler_asynch(serial_t *obj)
be_bryan 0:b74591d5ab33 660 {
be_bryan 0:b74591d5ab33 661 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 662 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
be_bryan 0:b74591d5ab33 663
be_bryan 0:b74591d5ab33 664 volatile int return_event = 0;
be_bryan 0:b74591d5ab33 665 uint8_t *buf = (uint8_t*)(obj->rx_buff.buffer);
be_bryan 0:b74591d5ab33 666 uint8_t i = 0;
be_bryan 0:b74591d5ab33 667
be_bryan 0:b74591d5ab33 668 // TX PART:
be_bryan 0:b74591d5ab33 669 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_TC) != RESET) {
be_bryan 0:b74591d5ab33 670 if (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET) {
be_bryan 0:b74591d5ab33 671 // Return event SERIAL_EVENT_TX_COMPLETE if requested
be_bryan 0:b74591d5ab33 672 if ((obj_s->events & SERIAL_EVENT_TX_COMPLETE ) != 0) {
be_bryan 0:b74591d5ab33 673 return_event |= (SERIAL_EVENT_TX_COMPLETE & obj_s->events);
be_bryan 0:b74591d5ab33 674 }
be_bryan 0:b74591d5ab33 675 }
be_bryan 0:b74591d5ab33 676 }
be_bryan 0:b74591d5ab33 677
be_bryan 0:b74591d5ab33 678 // Handle error events
be_bryan 0:b74591d5ab33 679 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_PE) != RESET) {
be_bryan 0:b74591d5ab33 680 if (__HAL_UART_GET_IT(huart, UART_IT_PE) != RESET) {
be_bryan 0:b74591d5ab33 681 return_event |= (SERIAL_EVENT_RX_PARITY_ERROR & obj_s->events);
be_bryan 0:b74591d5ab33 682 }
be_bryan 0:b74591d5ab33 683 }
be_bryan 0:b74591d5ab33 684
be_bryan 0:b74591d5ab33 685 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_FE) != RESET) {
be_bryan 0:b74591d5ab33 686 if (__HAL_UART_GET_IT(huart, UART_IT_FE) != RESET) {
be_bryan 0:b74591d5ab33 687 return_event |= (SERIAL_EVENT_RX_FRAMING_ERROR & obj_s->events);
be_bryan 0:b74591d5ab33 688 }
be_bryan 0:b74591d5ab33 689 }
be_bryan 0:b74591d5ab33 690
be_bryan 0:b74591d5ab33 691 if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) != RESET) {
be_bryan 0:b74591d5ab33 692 if (__HAL_UART_GET_IT(huart, UART_IT_ORE) != RESET) {
be_bryan 0:b74591d5ab33 693 return_event |= (SERIAL_EVENT_RX_OVERRUN_ERROR & obj_s->events);
be_bryan 0:b74591d5ab33 694 }
be_bryan 0:b74591d5ab33 695 }
be_bryan 0:b74591d5ab33 696
be_bryan 0:b74591d5ab33 697 HAL_UART_IRQHandler(huart);
be_bryan 0:b74591d5ab33 698
be_bryan 0:b74591d5ab33 699 // Abort if an error occurs
be_bryan 0:b74591d5ab33 700 if ((return_event & SERIAL_EVENT_RX_PARITY_ERROR) ||
be_bryan 0:b74591d5ab33 701 (return_event & SERIAL_EVENT_RX_FRAMING_ERROR) ||
be_bryan 0:b74591d5ab33 702 (return_event & SERIAL_EVENT_RX_OVERRUN_ERROR)) {
be_bryan 0:b74591d5ab33 703 return return_event;
be_bryan 0:b74591d5ab33 704 }
be_bryan 0:b74591d5ab33 705
be_bryan 0:b74591d5ab33 706 //RX PART
be_bryan 0:b74591d5ab33 707 if (huart->RxXferSize != 0) {
be_bryan 0:b74591d5ab33 708 obj->rx_buff.pos = huart->RxXferSize - huart->RxXferCount;
be_bryan 0:b74591d5ab33 709 }
be_bryan 0:b74591d5ab33 710 if ((huart->RxXferCount == 0) && (obj->rx_buff.pos >= (obj->rx_buff.length - 1))) {
be_bryan 0:b74591d5ab33 711 return_event |= (SERIAL_EVENT_RX_COMPLETE & obj_s->events);
be_bryan 0:b74591d5ab33 712 }
be_bryan 0:b74591d5ab33 713
be_bryan 0:b74591d5ab33 714 // Check if char_match is present
be_bryan 0:b74591d5ab33 715 if (obj_s->events & SERIAL_EVENT_RX_CHARACTER_MATCH) {
be_bryan 0:b74591d5ab33 716 if (buf != NULL) {
be_bryan 0:b74591d5ab33 717 for (i = 0; i < obj->rx_buff.pos; i++) {
be_bryan 0:b74591d5ab33 718 if (buf[i] == obj->char_match) {
be_bryan 0:b74591d5ab33 719 obj->rx_buff.pos = i;
be_bryan 0:b74591d5ab33 720 return_event |= (SERIAL_EVENT_RX_CHARACTER_MATCH & obj_s->events);
be_bryan 0:b74591d5ab33 721 serial_rx_abort_asynch(obj);
be_bryan 0:b74591d5ab33 722 break;
be_bryan 0:b74591d5ab33 723 }
be_bryan 0:b74591d5ab33 724 }
be_bryan 0:b74591d5ab33 725 }
be_bryan 0:b74591d5ab33 726 }
be_bryan 0:b74591d5ab33 727
be_bryan 0:b74591d5ab33 728 return return_event;
be_bryan 0:b74591d5ab33 729 }
be_bryan 0:b74591d5ab33 730
be_bryan 0:b74591d5ab33 731 /**
be_bryan 0:b74591d5ab33 732 * Abort the ongoing TX transaction. It disables the enabled interupt for TX and
be_bryan 0:b74591d5ab33 733 * flush TX hardware buffer if TX FIFO is used
be_bryan 0:b74591d5ab33 734 *
be_bryan 0:b74591d5ab33 735 * @param obj The serial object
be_bryan 0:b74591d5ab33 736 */
be_bryan 0:b74591d5ab33 737 void serial_tx_abort_asynch(serial_t *obj)
be_bryan 0:b74591d5ab33 738 {
be_bryan 0:b74591d5ab33 739 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 740 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
be_bryan 0:b74591d5ab33 741
be_bryan 0:b74591d5ab33 742 __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
be_bryan 0:b74591d5ab33 743 __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
be_bryan 0:b74591d5ab33 744
be_bryan 0:b74591d5ab33 745 // clear flags
be_bryan 0:b74591d5ab33 746 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
be_bryan 0:b74591d5ab33 747
be_bryan 0:b74591d5ab33 748 // reset states
be_bryan 0:b74591d5ab33 749 huart->TxXferCount = 0;
be_bryan 0:b74591d5ab33 750 // update handle state
be_bryan 0:b74591d5ab33 751 if(huart->gState == HAL_UART_STATE_BUSY_TX_RX) {
be_bryan 0:b74591d5ab33 752 huart->gState = HAL_UART_STATE_BUSY_RX;
be_bryan 0:b74591d5ab33 753 } else {
be_bryan 0:b74591d5ab33 754 huart->gState = HAL_UART_STATE_READY;
be_bryan 0:b74591d5ab33 755 }
be_bryan 0:b74591d5ab33 756 }
be_bryan 0:b74591d5ab33 757
be_bryan 0:b74591d5ab33 758 /**
be_bryan 0:b74591d5ab33 759 * Abort the ongoing RX transaction It disables the enabled interrupt for RX and
be_bryan 0:b74591d5ab33 760 * flush RX hardware buffer if RX FIFO is used
be_bryan 0:b74591d5ab33 761 *
be_bryan 0:b74591d5ab33 762 * @param obj The serial object
be_bryan 0:b74591d5ab33 763 */
be_bryan 0:b74591d5ab33 764 void serial_rx_abort_asynch(serial_t *obj)
be_bryan 0:b74591d5ab33 765 {
be_bryan 0:b74591d5ab33 766 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 767 UART_HandleTypeDef *huart = &uart_handlers[obj_s->index];
be_bryan 0:b74591d5ab33 768
be_bryan 0:b74591d5ab33 769 // disable interrupts
be_bryan 0:b74591d5ab33 770 __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
be_bryan 0:b74591d5ab33 771 __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
be_bryan 0:b74591d5ab33 772 __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
be_bryan 0:b74591d5ab33 773
be_bryan 0:b74591d5ab33 774 // clear flags
be_bryan 0:b74591d5ab33 775 __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_PEF | UART_CLEAR_FEF | UART_CLEAR_OREF);
be_bryan 0:b74591d5ab33 776 volatile uint32_t tmpval __attribute__((unused)) = huart->Instance->RDR; // Clear RXNE flag
be_bryan 0:b74591d5ab33 777
be_bryan 0:b74591d5ab33 778 // reset states
be_bryan 0:b74591d5ab33 779 huart->RxXferCount = 0;
be_bryan 0:b74591d5ab33 780 // update handle state
be_bryan 0:b74591d5ab33 781 if(huart->RxState == HAL_UART_STATE_BUSY_TX_RX) {
be_bryan 0:b74591d5ab33 782 huart->RxState = HAL_UART_STATE_BUSY_TX;
be_bryan 0:b74591d5ab33 783 } else {
be_bryan 0:b74591d5ab33 784 huart->RxState = HAL_UART_STATE_READY;
be_bryan 0:b74591d5ab33 785 }
be_bryan 0:b74591d5ab33 786 }
be_bryan 0:b74591d5ab33 787
be_bryan 0:b74591d5ab33 788 #endif
be_bryan 0:b74591d5ab33 789
be_bryan 0:b74591d5ab33 790 #if DEVICE_SERIAL_FC
be_bryan 0:b74591d5ab33 791
be_bryan 0:b74591d5ab33 792 /**
be_bryan 0:b74591d5ab33 793 * Set HW Control Flow
be_bryan 0:b74591d5ab33 794 * @param obj The serial object
be_bryan 0:b74591d5ab33 795 * @param type The Control Flow type (FlowControlNone, FlowControlRTS, FlowControlCTS, FlowControlRTSCTS)
be_bryan 0:b74591d5ab33 796 * @param rxflow Pin for the rxflow
be_bryan 0:b74591d5ab33 797 * @param txflow Pin for the txflow
be_bryan 0:b74591d5ab33 798 */
be_bryan 0:b74591d5ab33 799 void serial_set_flow_control(serial_t *obj, FlowControl type, PinName rxflow, PinName txflow)
be_bryan 0:b74591d5ab33 800 {
be_bryan 0:b74591d5ab33 801 struct serial_s *obj_s = SERIAL_S(obj);
be_bryan 0:b74591d5ab33 802
be_bryan 0:b74591d5ab33 803 // Determine the UART to use (UART_1, UART_2, ...)
be_bryan 0:b74591d5ab33 804 UARTName uart_rts = (UARTName)pinmap_peripheral(rxflow, PinMap_UART_RTS);
be_bryan 0:b74591d5ab33 805 UARTName uart_cts = (UARTName)pinmap_peripheral(txflow, PinMap_UART_CTS);
be_bryan 0:b74591d5ab33 806
be_bryan 0:b74591d5ab33 807 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
be_bryan 0:b74591d5ab33 808 obj_s->uart = (UARTName)pinmap_merge(uart_cts, uart_rts);
be_bryan 0:b74591d5ab33 809 MBED_ASSERT(obj_s->uart != (UARTName)NC);
be_bryan 0:b74591d5ab33 810
be_bryan 0:b74591d5ab33 811 if(type == FlowControlNone) {
be_bryan 0:b74591d5ab33 812 // Disable hardware flow control
be_bryan 0:b74591d5ab33 813 obj_s->hw_flow_ctl = UART_HWCONTROL_NONE;
be_bryan 0:b74591d5ab33 814 }
be_bryan 0:b74591d5ab33 815 if (type == FlowControlRTS) {
be_bryan 0:b74591d5ab33 816 // Enable RTS
be_bryan 0:b74591d5ab33 817 MBED_ASSERT(uart_rts != (UARTName)NC);
be_bryan 0:b74591d5ab33 818 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS;
be_bryan 0:b74591d5ab33 819 obj_s->pin_rts = rxflow;
be_bryan 0:b74591d5ab33 820 // Enable the pin for RTS function
be_bryan 0:b74591d5ab33 821 pinmap_pinout(rxflow, PinMap_UART_RTS);
be_bryan 0:b74591d5ab33 822 }
be_bryan 0:b74591d5ab33 823 if (type == FlowControlCTS) {
be_bryan 0:b74591d5ab33 824 // Enable CTS
be_bryan 0:b74591d5ab33 825 MBED_ASSERT(uart_cts != (UARTName)NC);
be_bryan 0:b74591d5ab33 826 obj_s->hw_flow_ctl = UART_HWCONTROL_CTS;
be_bryan 0:b74591d5ab33 827 obj_s->pin_cts = txflow;
be_bryan 0:b74591d5ab33 828 // Enable the pin for CTS function
be_bryan 0:b74591d5ab33 829 pinmap_pinout(txflow, PinMap_UART_CTS);
be_bryan 0:b74591d5ab33 830 }
be_bryan 0:b74591d5ab33 831 if (type == FlowControlRTSCTS) {
be_bryan 0:b74591d5ab33 832 // Enable CTS & RTS
be_bryan 0:b74591d5ab33 833 MBED_ASSERT(uart_rts != (UARTName)NC);
be_bryan 0:b74591d5ab33 834 MBED_ASSERT(uart_cts != (UARTName)NC);
be_bryan 0:b74591d5ab33 835 obj_s->hw_flow_ctl = UART_HWCONTROL_RTS_CTS;
be_bryan 0:b74591d5ab33 836 obj_s->pin_rts = rxflow;
be_bryan 0:b74591d5ab33 837 obj_s->pin_cts = txflow;
be_bryan 0:b74591d5ab33 838 // Enable the pin for CTS function
be_bryan 0:b74591d5ab33 839 pinmap_pinout(txflow, PinMap_UART_CTS);
be_bryan 0:b74591d5ab33 840 // Enable the pin for RTS function
be_bryan 0:b74591d5ab33 841 pinmap_pinout(rxflow, PinMap_UART_RTS);
be_bryan 0:b74591d5ab33 842 }
be_bryan 0:b74591d5ab33 843
be_bryan 0:b74591d5ab33 844 init_uart(obj);
be_bryan 0:b74591d5ab33 845 }
be_bryan 0:b74591d5ab33 846
be_bryan 0:b74591d5ab33 847 #endif
be_bryan 0:b74591d5ab33 848
be_bryan 0:b74591d5ab33 849 #endif