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targets/hal/TARGET_STM/TARGET_STM32L4/serial_api.c@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:
bogdanm
Date:
Thu Oct 01 15:25:22 2015 +0300
Revision:
0:9b334a45a8ff
Child:
112:df58eca2f41d
Initial commit on mbed-dev



Replaces mbed-src (now inactive)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 *******************************************************************************
bogdanm 0:9b334a45a8ff 3 * Copyright (c) 2015, STMicroelectronics
bogdanm 0:9b334a45a8ff 4 * All rights reserved.
bogdanm 0:9b334a45a8ff 5 *
bogdanm 0:9b334a45a8ff 6 * Redistribution and use in source and binary forms, with or without
bogdanm 0:9b334a45a8ff 7 * modification, are permitted provided that the following conditions are met:
bogdanm 0:9b334a45a8ff 8 *
bogdanm 0:9b334a45a8ff 9 * 1. Redistributions of source code must retain the above copyright notice,
bogdanm 0:9b334a45a8ff 10 * this list of conditions and the following disclaimer.
bogdanm 0:9b334a45a8ff 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
bogdanm 0:9b334a45a8ff 12 * this list of conditions and the following disclaimer in the documentation
bogdanm 0:9b334a45a8ff 13 * and/or other materials provided with the distribution.
bogdanm 0:9b334a45a8ff 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
bogdanm 0:9b334a45a8ff 15 * may be used to endorse or promote products derived from this software
bogdanm 0:9b334a45a8ff 16 * without specific prior written permission.
bogdanm 0:9b334a45a8ff 17 *
bogdanm 0:9b334a45a8ff 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
bogdanm 0:9b334a45a8ff 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
bogdanm 0:9b334a45a8ff 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
bogdanm 0:9b334a45a8ff 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
bogdanm 0:9b334a45a8ff 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
bogdanm 0:9b334a45a8ff 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
bogdanm 0:9b334a45a8ff 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
bogdanm 0:9b334a45a8ff 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
bogdanm 0:9b334a45a8ff 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
bogdanm 0:9b334a45a8ff 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
bogdanm 0:9b334a45a8ff 28 *******************************************************************************
bogdanm 0:9b334a45a8ff 29 */
bogdanm 0:9b334a45a8ff 30 #include "mbed_assert.h"
bogdanm 0:9b334a45a8ff 31 #include "serial_api.h"
bogdanm 0:9b334a45a8ff 32
bogdanm 0:9b334a45a8ff 33 #if DEVICE_SERIAL
bogdanm 0:9b334a45a8ff 34
bogdanm 0:9b334a45a8ff 35 #include "cmsis.h"
bogdanm 0:9b334a45a8ff 36 #include "pinmap.h"
bogdanm 0:9b334a45a8ff 37 #include "mbed_error.h"
bogdanm 0:9b334a45a8ff 38 #include <string.h>
bogdanm 0:9b334a45a8ff 39 #include "PeripheralPins.h"
bogdanm 0:9b334a45a8ff 40
bogdanm 0:9b334a45a8ff 41 #define UART_NUM (6)
bogdanm 0:9b334a45a8ff 42
bogdanm 0:9b334a45a8ff 43 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0, 0, 0, 0};
bogdanm 0:9b334a45a8ff 44
bogdanm 0:9b334a45a8ff 45 static uart_irq_handler irq_handler;
bogdanm 0:9b334a45a8ff 46
bogdanm 0:9b334a45a8ff 47 UART_HandleTypeDef UartHandle;
bogdanm 0:9b334a45a8ff 48
bogdanm 0:9b334a45a8ff 49 int stdio_uart_inited = 0;
bogdanm 0:9b334a45a8ff 50 serial_t stdio_uart;
bogdanm 0:9b334a45a8ff 51
bogdanm 0:9b334a45a8ff 52 static void init_uart(serial_t *obj)
bogdanm 0:9b334a45a8ff 53 {
bogdanm 0:9b334a45a8ff 54 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 55
bogdanm 0:9b334a45a8ff 56 UartHandle.Init.BaudRate = obj->baudrate;
bogdanm 0:9b334a45a8ff 57 UartHandle.Init.WordLength = obj->databits;
bogdanm 0:9b334a45a8ff 58 UartHandle.Init.StopBits = obj->stopbits;
bogdanm 0:9b334a45a8ff 59 UartHandle.Init.Parity = obj->parity;
bogdanm 0:9b334a45a8ff 60 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
bogdanm 0:9b334a45a8ff 61 UartHandle.Init.OverSampling = UART_OVERSAMPLING_16;
bogdanm 0:9b334a45a8ff 62 UartHandle.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_ENABLE;
bogdanm 0:9b334a45a8ff 63
bogdanm 0:9b334a45a8ff 64 if (obj->pin_rx == NC) {
bogdanm 0:9b334a45a8ff 65 UartHandle.Init.Mode = UART_MODE_TX;
bogdanm 0:9b334a45a8ff 66 } else if (obj->pin_tx == NC) {
bogdanm 0:9b334a45a8ff 67 UartHandle.Init.Mode = UART_MODE_RX;
bogdanm 0:9b334a45a8ff 68 } else {
bogdanm 0:9b334a45a8ff 69 UartHandle.Init.Mode = UART_MODE_TX_RX;
bogdanm 0:9b334a45a8ff 70 }
bogdanm 0:9b334a45a8ff 71
bogdanm 0:9b334a45a8ff 72 if (HAL_UART_Init(&UartHandle) != HAL_OK) {
bogdanm 0:9b334a45a8ff 73 error("Cannot initialize UART\n");
bogdanm 0:9b334a45a8ff 74 }
bogdanm 0:9b334a45a8ff 75 }
bogdanm 0:9b334a45a8ff 76
bogdanm 0:9b334a45a8ff 77 void serial_init(serial_t *obj, PinName tx, PinName rx)
bogdanm 0:9b334a45a8ff 78 {
bogdanm 0:9b334a45a8ff 79 // Determine the UART to use (UART_1, UART_2, ...)
bogdanm 0:9b334a45a8ff 80 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
bogdanm 0:9b334a45a8ff 81 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
bogdanm 0:9b334a45a8ff 82
bogdanm 0:9b334a45a8ff 83 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
bogdanm 0:9b334a45a8ff 84 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
bogdanm 0:9b334a45a8ff 85 MBED_ASSERT(obj->uart != (UARTName)NC);
bogdanm 0:9b334a45a8ff 86
bogdanm 0:9b334a45a8ff 87 obj->baudrate = 9600; // Default excepted for LPUART_1 (see below)
bogdanm 0:9b334a45a8ff 88
bogdanm 0:9b334a45a8ff 89 // Enable UART clock
bogdanm 0:9b334a45a8ff 90 if (obj->uart == UART_1) {
bogdanm 0:9b334a45a8ff 91 __HAL_RCC_USART1_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 92 obj->index = 0;
bogdanm 0:9b334a45a8ff 93 }
bogdanm 0:9b334a45a8ff 94
bogdanm 0:9b334a45a8ff 95 if (obj->uart == UART_2) {
bogdanm 0:9b334a45a8ff 96 __HAL_RCC_USART2_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 97 obj->index = 1;
bogdanm 0:9b334a45a8ff 98 }
bogdanm 0:9b334a45a8ff 99
bogdanm 0:9b334a45a8ff 100 if (obj->uart == UART_3) {
bogdanm 0:9b334a45a8ff 101 __HAL_RCC_USART3_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 102 obj->index = 2;
bogdanm 0:9b334a45a8ff 103 }
bogdanm 0:9b334a45a8ff 104
bogdanm 0:9b334a45a8ff 105 if (obj->uart == UART_4) {
bogdanm 0:9b334a45a8ff 106 __HAL_RCC_UART4_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 107 obj->index = 3;
bogdanm 0:9b334a45a8ff 108 }
bogdanm 0:9b334a45a8ff 109
bogdanm 0:9b334a45a8ff 110 if (obj->uart == UART_5) {
bogdanm 0:9b334a45a8ff 111 __HAL_RCC_UART5_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 112 obj->index = 4;
bogdanm 0:9b334a45a8ff 113 }
bogdanm 0:9b334a45a8ff 114
bogdanm 0:9b334a45a8ff 115 if (obj->uart == LPUART_1) {
bogdanm 0:9b334a45a8ff 116 __HAL_RCC_LPUART1_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 117 obj->baudrate = 38400; // Maximum peripheral clock is 4096 x BR -> This is the minimum BR with 80 MHz peripheral clock.
bogdanm 0:9b334a45a8ff 118 obj->index = 5;
bogdanm 0:9b334a45a8ff 119 }
bogdanm 0:9b334a45a8ff 120
bogdanm 0:9b334a45a8ff 121 // Configure the UART pins
bogdanm 0:9b334a45a8ff 122 pinmap_pinout(tx, PinMap_UART_TX);
bogdanm 0:9b334a45a8ff 123 pinmap_pinout(rx, PinMap_UART_RX);
bogdanm 0:9b334a45a8ff 124 if (tx != NC) {
bogdanm 0:9b334a45a8ff 125 pin_mode(tx, PullUp);
bogdanm 0:9b334a45a8ff 126 }
bogdanm 0:9b334a45a8ff 127 if (rx != NC) {
bogdanm 0:9b334a45a8ff 128 pin_mode(rx, PullUp);
bogdanm 0:9b334a45a8ff 129 }
bogdanm 0:9b334a45a8ff 130
bogdanm 0:9b334a45a8ff 131 // Configure UART
bogdanm 0:9b334a45a8ff 132 obj->databits = UART_WORDLENGTH_8B;
bogdanm 0:9b334a45a8ff 133 obj->stopbits = UART_STOPBITS_1;
bogdanm 0:9b334a45a8ff 134 obj->parity = UART_PARITY_NONE;
bogdanm 0:9b334a45a8ff 135 obj->pin_tx = tx;
bogdanm 0:9b334a45a8ff 136 obj->pin_rx = rx;
bogdanm 0:9b334a45a8ff 137
bogdanm 0:9b334a45a8ff 138 init_uart(obj);
bogdanm 0:9b334a45a8ff 139
bogdanm 0:9b334a45a8ff 140 // For stdio management
bogdanm 0:9b334a45a8ff 141 if (obj->uart == STDIO_UART) {
bogdanm 0:9b334a45a8ff 142 stdio_uart_inited = 1;
bogdanm 0:9b334a45a8ff 143 memcpy(&stdio_uart, obj, sizeof(serial_t));
bogdanm 0:9b334a45a8ff 144 }
bogdanm 0:9b334a45a8ff 145 }
bogdanm 0:9b334a45a8ff 146
bogdanm 0:9b334a45a8ff 147 void serial_free(serial_t *obj)
bogdanm 0:9b334a45a8ff 148 {
bogdanm 0:9b334a45a8ff 149 // Reset UART and disable clock
bogdanm 0:9b334a45a8ff 150 if (obj->uart == UART_1) {
bogdanm 0:9b334a45a8ff 151 __HAL_RCC_USART1_FORCE_RESET();
bogdanm 0:9b334a45a8ff 152 __HAL_RCC_USART1_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 153 __HAL_RCC_USART1_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 154 }
bogdanm 0:9b334a45a8ff 155
bogdanm 0:9b334a45a8ff 156 if (obj->uart == UART_2) {
bogdanm 0:9b334a45a8ff 157 __HAL_RCC_USART2_FORCE_RESET();
bogdanm 0:9b334a45a8ff 158 __HAL_RCC_USART2_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 159 __HAL_RCC_USART2_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 160 }
bogdanm 0:9b334a45a8ff 161
bogdanm 0:9b334a45a8ff 162 if (obj->uart == UART_3) {
bogdanm 0:9b334a45a8ff 163 __HAL_RCC_USART3_FORCE_RESET();
bogdanm 0:9b334a45a8ff 164 __HAL_RCC_USART3_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 165 __HAL_RCC_USART3_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 166 }
bogdanm 0:9b334a45a8ff 167
bogdanm 0:9b334a45a8ff 168 if (obj->uart == UART_4) {
bogdanm 0:9b334a45a8ff 169 __HAL_RCC_UART4_FORCE_RESET();
bogdanm 0:9b334a45a8ff 170 __HAL_RCC_UART4_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 171 __HAL_RCC_UART4_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 172 }
bogdanm 0:9b334a45a8ff 173
bogdanm 0:9b334a45a8ff 174 if (obj->uart == UART_5) {
bogdanm 0:9b334a45a8ff 175 __HAL_RCC_UART5_FORCE_RESET();
bogdanm 0:9b334a45a8ff 176 __HAL_RCC_UART5_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 177 __HAL_RCC_UART5_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 178 }
bogdanm 0:9b334a45a8ff 179
bogdanm 0:9b334a45a8ff 180 if (obj->uart == LPUART_1) {
bogdanm 0:9b334a45a8ff 181 __HAL_RCC_LPUART1_FORCE_RESET();
bogdanm 0:9b334a45a8ff 182 __HAL_RCC_LPUART1_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 183 __HAL_RCC_LPUART1_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 184 }
bogdanm 0:9b334a45a8ff 185
bogdanm 0:9b334a45a8ff 186 // Configure GPIOs
bogdanm 0:9b334a45a8ff 187 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
bogdanm 0:9b334a45a8ff 188 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
bogdanm 0:9b334a45a8ff 189
bogdanm 0:9b334a45a8ff 190 serial_irq_ids[obj->index] = 0;
bogdanm 0:9b334a45a8ff 191 }
bogdanm 0:9b334a45a8ff 192
bogdanm 0:9b334a45a8ff 193 void serial_baud(serial_t *obj, int baudrate)
bogdanm 0:9b334a45a8ff 194 {
bogdanm 0:9b334a45a8ff 195 // Check minimum baud rate for 80 MHz peripheral clock
bogdanm 0:9b334a45a8ff 196 if ((obj->uart == LPUART_1) && (baudrate < 38400)) {
bogdanm 0:9b334a45a8ff 197 error("The minimum baud rate is 38400 for LPUART_1 running at 80 MHz\n");
bogdanm 0:9b334a45a8ff 198 }
bogdanm 0:9b334a45a8ff 199 obj->baudrate = baudrate;
bogdanm 0:9b334a45a8ff 200 init_uart(obj);
bogdanm 0:9b334a45a8ff 201 }
bogdanm 0:9b334a45a8ff 202
bogdanm 0:9b334a45a8ff 203 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
bogdanm 0:9b334a45a8ff 204 {
bogdanm 0:9b334a45a8ff 205 if (data_bits == 9) {
bogdanm 0:9b334a45a8ff 206 obj->databits = UART_WORDLENGTH_9B;
bogdanm 0:9b334a45a8ff 207 } else {
bogdanm 0:9b334a45a8ff 208 obj->databits = UART_WORDLENGTH_8B;
bogdanm 0:9b334a45a8ff 209 }
bogdanm 0:9b334a45a8ff 210
bogdanm 0:9b334a45a8ff 211 switch (parity) {
bogdanm 0:9b334a45a8ff 212 case ParityOdd:
bogdanm 0:9b334a45a8ff 213 case ParityForced0:
bogdanm 0:9b334a45a8ff 214 obj->parity = UART_PARITY_ODD;
bogdanm 0:9b334a45a8ff 215 break;
bogdanm 0:9b334a45a8ff 216 case ParityEven:
bogdanm 0:9b334a45a8ff 217 case ParityForced1:
bogdanm 0:9b334a45a8ff 218 obj->parity = UART_PARITY_EVEN;
bogdanm 0:9b334a45a8ff 219 break;
bogdanm 0:9b334a45a8ff 220 default: // ParityNone
bogdanm 0:9b334a45a8ff 221 obj->parity = UART_PARITY_NONE;
bogdanm 0:9b334a45a8ff 222 break;
bogdanm 0:9b334a45a8ff 223 }
bogdanm 0:9b334a45a8ff 224
bogdanm 0:9b334a45a8ff 225 if (stop_bits == 2) {
bogdanm 0:9b334a45a8ff 226 obj->stopbits = UART_STOPBITS_2;
bogdanm 0:9b334a45a8ff 227 } else {
bogdanm 0:9b334a45a8ff 228 obj->stopbits = UART_STOPBITS_1;
bogdanm 0:9b334a45a8ff 229 }
bogdanm 0:9b334a45a8ff 230
bogdanm 0:9b334a45a8ff 231 init_uart(obj);
bogdanm 0:9b334a45a8ff 232 }
bogdanm 0:9b334a45a8ff 233
bogdanm 0:9b334a45a8ff 234 /******************************************************************************
bogdanm 0:9b334a45a8ff 235 * INTERRUPTS HANDLING
bogdanm 0:9b334a45a8ff 236 ******************************************************************************/
bogdanm 0:9b334a45a8ff 237
bogdanm 0:9b334a45a8ff 238 static void uart_irq(UARTName name, int id)
bogdanm 0:9b334a45a8ff 239 {
bogdanm 0:9b334a45a8ff 240 UartHandle.Instance = (USART_TypeDef *)name;
bogdanm 0:9b334a45a8ff 241 if (serial_irq_ids[id] != 0) {
bogdanm 0:9b334a45a8ff 242 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
bogdanm 0:9b334a45a8ff 243 irq_handler(serial_irq_ids[id], TxIrq);
bogdanm 0:9b334a45a8ff 244 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TC);
bogdanm 0:9b334a45a8ff 245 }
bogdanm 0:9b334a45a8ff 246 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
bogdanm 0:9b334a45a8ff 247 irq_handler(serial_irq_ids[id], RxIrq);
bogdanm 0:9b334a45a8ff 248 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
bogdanm 0:9b334a45a8ff 249 }
bogdanm 0:9b334a45a8ff 250 }
bogdanm 0:9b334a45a8ff 251 }
bogdanm 0:9b334a45a8ff 252
bogdanm 0:9b334a45a8ff 253 static void uart1_irq(void)
bogdanm 0:9b334a45a8ff 254 {
bogdanm 0:9b334a45a8ff 255 uart_irq(UART_1, 0);
bogdanm 0:9b334a45a8ff 256 }
bogdanm 0:9b334a45a8ff 257
bogdanm 0:9b334a45a8ff 258 static void uart2_irq(void)
bogdanm 0:9b334a45a8ff 259 {
bogdanm 0:9b334a45a8ff 260 uart_irq(UART_2, 1);
bogdanm 0:9b334a45a8ff 261 }
bogdanm 0:9b334a45a8ff 262
bogdanm 0:9b334a45a8ff 263 static void uart3_irq(void)
bogdanm 0:9b334a45a8ff 264 {
bogdanm 0:9b334a45a8ff 265 uart_irq(UART_3, 2);
bogdanm 0:9b334a45a8ff 266 }
bogdanm 0:9b334a45a8ff 267
bogdanm 0:9b334a45a8ff 268 static void uart4_irq(void)
bogdanm 0:9b334a45a8ff 269 {
bogdanm 0:9b334a45a8ff 270 uart_irq(UART_4, 3);
bogdanm 0:9b334a45a8ff 271 }
bogdanm 0:9b334a45a8ff 272
bogdanm 0:9b334a45a8ff 273 static void uart5_irq(void)
bogdanm 0:9b334a45a8ff 274 {
bogdanm 0:9b334a45a8ff 275 uart_irq(UART_5, 4);
bogdanm 0:9b334a45a8ff 276 }
bogdanm 0:9b334a45a8ff 277
bogdanm 0:9b334a45a8ff 278 static void lpuart1_irq(void)
bogdanm 0:9b334a45a8ff 279 {
bogdanm 0:9b334a45a8ff 280 uart_irq(LPUART_1, 5);
bogdanm 0:9b334a45a8ff 281 }
bogdanm 0:9b334a45a8ff 282
bogdanm 0:9b334a45a8ff 283 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
bogdanm 0:9b334a45a8ff 284 {
bogdanm 0:9b334a45a8ff 285 irq_handler = handler;
bogdanm 0:9b334a45a8ff 286 serial_irq_ids[obj->index] = id;
bogdanm 0:9b334a45a8ff 287 }
bogdanm 0:9b334a45a8ff 288
bogdanm 0:9b334a45a8ff 289 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
bogdanm 0:9b334a45a8ff 290 {
bogdanm 0:9b334a45a8ff 291 IRQn_Type irq_n = (IRQn_Type)0;
bogdanm 0:9b334a45a8ff 292 uint32_t vector = 0;
bogdanm 0:9b334a45a8ff 293
bogdanm 0:9b334a45a8ff 294 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 295
bogdanm 0:9b334a45a8ff 296 if (obj->uart == UART_1) {
bogdanm 0:9b334a45a8ff 297 irq_n = USART1_IRQn;
bogdanm 0:9b334a45a8ff 298 vector = (uint32_t)&uart1_irq;
bogdanm 0:9b334a45a8ff 299 }
bogdanm 0:9b334a45a8ff 300
bogdanm 0:9b334a45a8ff 301 if (obj->uart == UART_2) {
bogdanm 0:9b334a45a8ff 302 irq_n = USART2_IRQn;
bogdanm 0:9b334a45a8ff 303 vector = (uint32_t)&uart2_irq;
bogdanm 0:9b334a45a8ff 304 }
bogdanm 0:9b334a45a8ff 305
bogdanm 0:9b334a45a8ff 306 if (obj->uart == UART_3) {
bogdanm 0:9b334a45a8ff 307 irq_n = USART3_IRQn;
bogdanm 0:9b334a45a8ff 308 vector = (uint32_t)&uart3_irq;
bogdanm 0:9b334a45a8ff 309 }
bogdanm 0:9b334a45a8ff 310
bogdanm 0:9b334a45a8ff 311 if (obj->uart == UART_4) {
bogdanm 0:9b334a45a8ff 312 irq_n = UART4_IRQn;
bogdanm 0:9b334a45a8ff 313 vector = (uint32_t)&uart4_irq;
bogdanm 0:9b334a45a8ff 314 }
bogdanm 0:9b334a45a8ff 315
bogdanm 0:9b334a45a8ff 316 if (obj->uart == UART_5) {
bogdanm 0:9b334a45a8ff 317 irq_n = UART5_IRQn;
bogdanm 0:9b334a45a8ff 318 vector = (uint32_t)&uart5_irq;
bogdanm 0:9b334a45a8ff 319 }
bogdanm 0:9b334a45a8ff 320
bogdanm 0:9b334a45a8ff 321 if (obj->uart == LPUART_1) {
bogdanm 0:9b334a45a8ff 322 irq_n = LPUART1_IRQn;
bogdanm 0:9b334a45a8ff 323 vector = (uint32_t)&lpuart1_irq;
bogdanm 0:9b334a45a8ff 324 }
bogdanm 0:9b334a45a8ff 325
bogdanm 0:9b334a45a8ff 326 if (enable) {
bogdanm 0:9b334a45a8ff 327
bogdanm 0:9b334a45a8ff 328 if (irq == RxIrq) {
bogdanm 0:9b334a45a8ff 329 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
bogdanm 0:9b334a45a8ff 330 } else { // TxIrq
bogdanm 0:9b334a45a8ff 331 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
bogdanm 0:9b334a45a8ff 332 }
bogdanm 0:9b334a45a8ff 333
bogdanm 0:9b334a45a8ff 334 NVIC_SetVector(irq_n, vector);
bogdanm 0:9b334a45a8ff 335 NVIC_EnableIRQ(irq_n);
bogdanm 0:9b334a45a8ff 336
bogdanm 0:9b334a45a8ff 337 } else { // disable
bogdanm 0:9b334a45a8ff 338
bogdanm 0:9b334a45a8ff 339 int all_disabled = 0;
bogdanm 0:9b334a45a8ff 340
bogdanm 0:9b334a45a8ff 341 if (irq == RxIrq) {
bogdanm 0:9b334a45a8ff 342 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
bogdanm 0:9b334a45a8ff 343 // Check if TxIrq is disabled too
bogdanm 0:9b334a45a8ff 344 if ((UartHandle.Instance->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
bogdanm 0:9b334a45a8ff 345 } else { // TxIrq
bogdanm 0:9b334a45a8ff 346 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TXE);
bogdanm 0:9b334a45a8ff 347 // Check if RxIrq is disabled too
bogdanm 0:9b334a45a8ff 348 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
bogdanm 0:9b334a45a8ff 349 }
bogdanm 0:9b334a45a8ff 350
bogdanm 0:9b334a45a8ff 351 if (all_disabled) NVIC_DisableIRQ(irq_n);
bogdanm 0:9b334a45a8ff 352
bogdanm 0:9b334a45a8ff 353 }
bogdanm 0:9b334a45a8ff 354 }
bogdanm 0:9b334a45a8ff 355
bogdanm 0:9b334a45a8ff 356 /******************************************************************************
bogdanm 0:9b334a45a8ff 357 * READ/WRITE
bogdanm 0:9b334a45a8ff 358 ******************************************************************************/
bogdanm 0:9b334a45a8ff 359
bogdanm 0:9b334a45a8ff 360 int serial_getc(serial_t *obj)
bogdanm 0:9b334a45a8ff 361 {
bogdanm 0:9b334a45a8ff 362 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 363 while (!serial_readable(obj));
bogdanm 0:9b334a45a8ff 364 return (int)(uart->RDR & (uint32_t)0xFF);
bogdanm 0:9b334a45a8ff 365 }
bogdanm 0:9b334a45a8ff 366
bogdanm 0:9b334a45a8ff 367 void serial_putc(serial_t *obj, int c)
bogdanm 0:9b334a45a8ff 368 {
bogdanm 0:9b334a45a8ff 369 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 370 while (!serial_writable(obj));
bogdanm 0:9b334a45a8ff 371 uart->TDR = (uint32_t)(c & (uint32_t)0xFF);
bogdanm 0:9b334a45a8ff 372 }
bogdanm 0:9b334a45a8ff 373
bogdanm 0:9b334a45a8ff 374 int serial_readable(serial_t *obj)
bogdanm 0:9b334a45a8ff 375 {
bogdanm 0:9b334a45a8ff 376 int status;
bogdanm 0:9b334a45a8ff 377 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 378 // Check if data is received
bogdanm 0:9b334a45a8ff 379 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
bogdanm 0:9b334a45a8ff 380 return status;
bogdanm 0:9b334a45a8ff 381 }
bogdanm 0:9b334a45a8ff 382
bogdanm 0:9b334a45a8ff 383 int serial_writable(serial_t *obj)
bogdanm 0:9b334a45a8ff 384 {
bogdanm 0:9b334a45a8ff 385 int status;
bogdanm 0:9b334a45a8ff 386 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 387 // Check if data is transmitted
bogdanm 0:9b334a45a8ff 388 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
bogdanm 0:9b334a45a8ff 389 return status;
bogdanm 0:9b334a45a8ff 390 }
bogdanm 0:9b334a45a8ff 391
bogdanm 0:9b334a45a8ff 392 void serial_clear(serial_t *obj)
bogdanm 0:9b334a45a8ff 393 {
bogdanm 0:9b334a45a8ff 394 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 395 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TXE);
bogdanm 0:9b334a45a8ff 396 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
bogdanm 0:9b334a45a8ff 397 }
bogdanm 0:9b334a45a8ff 398
bogdanm 0:9b334a45a8ff 399 void serial_pinout_tx(PinName tx)
bogdanm 0:9b334a45a8ff 400 {
bogdanm 0:9b334a45a8ff 401 pinmap_pinout(tx, PinMap_UART_TX);
bogdanm 0:9b334a45a8ff 402 }
bogdanm 0:9b334a45a8ff 403
bogdanm 0:9b334a45a8ff 404 void serial_break_set(serial_t *obj)
bogdanm 0:9b334a45a8ff 405 {
bogdanm 0:9b334a45a8ff 406 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 407 HAL_LIN_SendBreak(&UartHandle);
bogdanm 0:9b334a45a8ff 408 }
bogdanm 0:9b334a45a8ff 409
bogdanm 0:9b334a45a8ff 410 void serial_break_clear(serial_t *obj)
bogdanm 0:9b334a45a8ff 411 {
bogdanm 0:9b334a45a8ff 412 }
bogdanm 0:9b334a45a8ff 413
bogdanm 0:9b334a45a8ff 414 #endif