Jeroen van Zoeren / mbed-dev

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Dependents:   Ophaalbrug-dev

Fork of mbed-dev by mbed official

targets/hal/TARGET_STM/TARGET_STM32L1/serial_api.c@32:58d485b73390, 2015-12-02 (annotated)

Committer:
mbed_official
Date:
Wed Dec 02 08:45:10 2015 +0000
Revision:
32:58d485b73390
Parent:
16:75201d1ad908 
Synchronized with git revision 3a0741a1739c9c23203366e8955e8758b46fec08



Full URL: https://github.com/mbedmicro/mbed/commit/3a0741a1739c9c23203366e8955e8758b46fec08/



handle UART RX overrun on stm32l1xx

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) 2014, 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 <string.h>
bogdanm 0:9b334a45a8ff 38 #include "PeripheralPins.h"
bogdanm 0:9b334a45a8ff 39
bogdanm 0:9b334a45a8ff 40 #define UART_NUM (5)
bogdanm 0:9b334a45a8ff 41
bogdanm 0:9b334a45a8ff 42 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0, 0, 0};
bogdanm 0:9b334a45a8ff 43
bogdanm 0:9b334a45a8ff 44 static uart_irq_handler irq_handler;
bogdanm 0:9b334a45a8ff 45
bogdanm 0:9b334a45a8ff 46 UART_HandleTypeDef UartHandle;
bogdanm 0:9b334a45a8ff 47
bogdanm 0:9b334a45a8ff 48 int stdio_uart_inited = 0;
bogdanm 0:9b334a45a8ff 49 serial_t stdio_uart;
bogdanm 0:9b334a45a8ff 50
bogdanm 0:9b334a45a8ff 51 static void init_uart(serial_t *obj)
bogdanm 0:9b334a45a8ff 52 {
bogdanm 0:9b334a45a8ff 53 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 54
bogdanm 0:9b334a45a8ff 55 UartHandle.Init.BaudRate = obj->baudrate;
bogdanm 0:9b334a45a8ff 56 UartHandle.Init.WordLength = obj->databits;
bogdanm 0:9b334a45a8ff 57 UartHandle.Init.StopBits = obj->stopbits;
bogdanm 0:9b334a45a8ff 58 UartHandle.Init.Parity = obj->parity;
bogdanm 0:9b334a45a8ff 59 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
bogdanm 0:9b334a45a8ff 60
bogdanm 0:9b334a45a8ff 61 if (obj->pin_rx == NC) {
bogdanm 0:9b334a45a8ff 62 UartHandle.Init.Mode = UART_MODE_TX;
bogdanm 0:9b334a45a8ff 63 } else if (obj->pin_tx == NC) {
bogdanm 0:9b334a45a8ff 64 UartHandle.Init.Mode = UART_MODE_RX;
bogdanm 0:9b334a45a8ff 65 } else {
bogdanm 0:9b334a45a8ff 66 UartHandle.Init.Mode = UART_MODE_TX_RX;
bogdanm 0:9b334a45a8ff 67 }
bogdanm 0:9b334a45a8ff 68
bogdanm 0:9b334a45a8ff 69 HAL_UART_Init(&UartHandle);
bogdanm 0:9b334a45a8ff 70 }
bogdanm 0:9b334a45a8ff 71
bogdanm 0:9b334a45a8ff 72 void serial_init(serial_t *obj, PinName tx, PinName rx)
bogdanm 0:9b334a45a8ff 73 {
bogdanm 0:9b334a45a8ff 74 // Determine the UART to use (UART_1, UART_2, ...)
bogdanm 0:9b334a45a8ff 75 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
bogdanm 0:9b334a45a8ff 76 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
bogdanm 0:9b334a45a8ff 77
bogdanm 0:9b334a45a8ff 78 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
bogdanm 0:9b334a45a8ff 79 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
bogdanm 0:9b334a45a8ff 80 MBED_ASSERT(obj->uart != (UARTName)NC);
bogdanm 0:9b334a45a8ff 81
bogdanm 0:9b334a45a8ff 82 // Enable UART clock
bogdanm 0:9b334a45a8ff 83 if (obj->uart == UART_1) {
bogdanm 0:9b334a45a8ff 84 __USART1_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 85 obj->index = 0;
bogdanm 0:9b334a45a8ff 86 }
bogdanm 0:9b334a45a8ff 87
bogdanm 0:9b334a45a8ff 88 if (obj->uart == UART_2) {
bogdanm 0:9b334a45a8ff 89 __USART2_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 90 obj->index = 1;
bogdanm 0:9b334a45a8ff 91 }
bogdanm 0:9b334a45a8ff 92
bogdanm 0:9b334a45a8ff 93 if (obj->uart == UART_3) {
bogdanm 0:9b334a45a8ff 94 __USART3_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 95 obj->index = 2;
bogdanm 0:9b334a45a8ff 96 }
bogdanm 0:9b334a45a8ff 97
mbed_official 16:75201d1ad908 98 #if defined(UART4_BASE)
bogdanm 0:9b334a45a8ff 99 if (obj->uart == UART_4) {
bogdanm 0:9b334a45a8ff 100 __UART4_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 101 obj->index = 3;
bogdanm 0:9b334a45a8ff 102 }
bogdanm 0:9b334a45a8ff 103 #endif
mbed_official 16:75201d1ad908 104 #if defined(UART5_BASE)
bogdanm 0:9b334a45a8ff 105 if (obj->uart == UART_5) {
bogdanm 0:9b334a45a8ff 106 __UART5_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 107 obj->index = 4;
bogdanm 0:9b334a45a8ff 108 }
bogdanm 0:9b334a45a8ff 109 #endif
bogdanm 0:9b334a45a8ff 110
bogdanm 0:9b334a45a8ff 111 // Configure the UART pins
bogdanm 0:9b334a45a8ff 112 pinmap_pinout(tx, PinMap_UART_TX);
bogdanm 0:9b334a45a8ff 113 pinmap_pinout(rx, PinMap_UART_RX);
bogdanm 0:9b334a45a8ff 114 if (tx != NC) {
bogdanm 0:9b334a45a8ff 115 pin_mode(tx, PullUp);
bogdanm 0:9b334a45a8ff 116 }
bogdanm 0:9b334a45a8ff 117 if (rx != NC) {
bogdanm 0:9b334a45a8ff 118 pin_mode(rx, PullUp);
bogdanm 0:9b334a45a8ff 119 }
bogdanm 0:9b334a45a8ff 120
bogdanm 0:9b334a45a8ff 121 // Configure UART
bogdanm 0:9b334a45a8ff 122 obj->baudrate = 9600;
bogdanm 0:9b334a45a8ff 123 obj->databits = UART_WORDLENGTH_8B;
bogdanm 0:9b334a45a8ff 124 obj->stopbits = UART_STOPBITS_1;
bogdanm 0:9b334a45a8ff 125 obj->parity = UART_PARITY_NONE;
bogdanm 0:9b334a45a8ff 126 obj->pin_tx = tx;
bogdanm 0:9b334a45a8ff 127 obj->pin_rx = rx;
bogdanm 0:9b334a45a8ff 128
bogdanm 0:9b334a45a8ff 129 init_uart(obj);
bogdanm 0:9b334a45a8ff 130
bogdanm 0:9b334a45a8ff 131 // For stdio management
bogdanm 0:9b334a45a8ff 132 if (obj->uart == STDIO_UART) {
bogdanm 0:9b334a45a8ff 133 stdio_uart_inited = 1;
bogdanm 0:9b334a45a8ff 134 memcpy(&stdio_uart, obj, sizeof(serial_t));
bogdanm 0:9b334a45a8ff 135 }
bogdanm 0:9b334a45a8ff 136 }
bogdanm 0:9b334a45a8ff 137
bogdanm 0:9b334a45a8ff 138 void serial_free(serial_t *obj)
bogdanm 0:9b334a45a8ff 139 {
bogdanm 0:9b334a45a8ff 140 // Reset UART and disable clock
bogdanm 0:9b334a45a8ff 141 if (obj->uart == UART_1) {
bogdanm 0:9b334a45a8ff 142 __USART1_FORCE_RESET();
bogdanm 0:9b334a45a8ff 143 __USART1_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 144 __USART1_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 145 }
bogdanm 0:9b334a45a8ff 146
bogdanm 0:9b334a45a8ff 147 if (obj->uart == UART_2) {
bogdanm 0:9b334a45a8ff 148 __USART2_FORCE_RESET();
bogdanm 0:9b334a45a8ff 149 __USART2_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 150 __USART2_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 151 }
bogdanm 0:9b334a45a8ff 152
bogdanm 0:9b334a45a8ff 153 if (obj->uart == UART_3) {
bogdanm 0:9b334a45a8ff 154 __USART3_FORCE_RESET();
bogdanm 0:9b334a45a8ff 155 __USART3_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 156 __USART3_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 157 }
bogdanm 0:9b334a45a8ff 158
mbed_official 16:75201d1ad908 159 #if defined(UART4_BASE)
bogdanm 0:9b334a45a8ff 160 if (obj->uart == UART_4) {
bogdanm 0:9b334a45a8ff 161 __UART4_FORCE_RESET();
bogdanm 0:9b334a45a8ff 162 __UART4_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 163 __UART4_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 164 }
bogdanm 0:9b334a45a8ff 165 #endif
mbed_official 16:75201d1ad908 166 #if defined(UART5_BASE)
bogdanm 0:9b334a45a8ff 167 if (obj->uart == UART_5) {
bogdanm 0:9b334a45a8ff 168 __UART5_FORCE_RESET();
bogdanm 0:9b334a45a8ff 169 __UART5_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 170 __UART5_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 171 }
bogdanm 0:9b334a45a8ff 172 #endif
bogdanm 0:9b334a45a8ff 173
bogdanm 0:9b334a45a8ff 174 // Configure GPIOs
bogdanm 0:9b334a45a8ff 175 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
bogdanm 0:9b334a45a8ff 176 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
bogdanm 0:9b334a45a8ff 177
bogdanm 0:9b334a45a8ff 178 serial_irq_ids[obj->index] = 0;
bogdanm 0:9b334a45a8ff 179 }
bogdanm 0:9b334a45a8ff 180
bogdanm 0:9b334a45a8ff 181 void serial_baud(serial_t *obj, int baudrate)
bogdanm 0:9b334a45a8ff 182 {
bogdanm 0:9b334a45a8ff 183 obj->baudrate = baudrate;
bogdanm 0:9b334a45a8ff 184 init_uart(obj);
bogdanm 0:9b334a45a8ff 185 }
bogdanm 0:9b334a45a8ff 186
bogdanm 0:9b334a45a8ff 187 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
bogdanm 0:9b334a45a8ff 188 {
bogdanm 0:9b334a45a8ff 189 if (data_bits == 9) {
bogdanm 0:9b334a45a8ff 190 obj->databits = UART_WORDLENGTH_9B;
bogdanm 0:9b334a45a8ff 191 } else {
bogdanm 0:9b334a45a8ff 192 obj->databits = UART_WORDLENGTH_8B;
bogdanm 0:9b334a45a8ff 193 }
bogdanm 0:9b334a45a8ff 194
bogdanm 0:9b334a45a8ff 195 switch (parity) {
bogdanm 0:9b334a45a8ff 196 case ParityOdd:
bogdanm 0:9b334a45a8ff 197 case ParityForced0:
bogdanm 0:9b334a45a8ff 198 obj->parity = UART_PARITY_ODD;
bogdanm 0:9b334a45a8ff 199 break;
bogdanm 0:9b334a45a8ff 200 case ParityEven:
bogdanm 0:9b334a45a8ff 201 case ParityForced1:
bogdanm 0:9b334a45a8ff 202 obj->parity = UART_PARITY_EVEN;
bogdanm 0:9b334a45a8ff 203 break;
bogdanm 0:9b334a45a8ff 204 default: // ParityNone
bogdanm 0:9b334a45a8ff 205 obj->parity = UART_PARITY_NONE;
bogdanm 0:9b334a45a8ff 206 break;
bogdanm 0:9b334a45a8ff 207 }
bogdanm 0:9b334a45a8ff 208
bogdanm 0:9b334a45a8ff 209 if (stop_bits == 2) {
bogdanm 0:9b334a45a8ff 210 obj->stopbits = UART_STOPBITS_2;
bogdanm 0:9b334a45a8ff 211 } else {
bogdanm 0:9b334a45a8ff 212 obj->stopbits = UART_STOPBITS_1;
bogdanm 0:9b334a45a8ff 213 }
bogdanm 0:9b334a45a8ff 214
bogdanm 0:9b334a45a8ff 215 init_uart(obj);
bogdanm 0:9b334a45a8ff 216 }
bogdanm 0:9b334a45a8ff 217
bogdanm 0:9b334a45a8ff 218 /******************************************************************************
bogdanm 0:9b334a45a8ff 219 * INTERRUPTS HANDLING
bogdanm 0:9b334a45a8ff 220 ******************************************************************************/
bogdanm 0:9b334a45a8ff 221
bogdanm 0:9b334a45a8ff 222 static void uart_irq(UARTName name, int id)
bogdanm 0:9b334a45a8ff 223 {
bogdanm 0:9b334a45a8ff 224 UartHandle.Instance = (USART_TypeDef *)name;
bogdanm 0:9b334a45a8ff 225 if (serial_irq_ids[id] != 0) {
bogdanm 0:9b334a45a8ff 226 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
bogdanm 0:9b334a45a8ff 227 irq_handler(serial_irq_ids[id], TxIrq);
bogdanm 0:9b334a45a8ff 228 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TC);
bogdanm 0:9b334a45a8ff 229 }
bogdanm 0:9b334a45a8ff 230 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
bogdanm 0:9b334a45a8ff 231 irq_handler(serial_irq_ids[id], RxIrq);
bogdanm 0:9b334a45a8ff 232 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
bogdanm 0:9b334a45a8ff 233 }
mbed_official 32:58d485b73390 234 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_ORE) != RESET) {
mbed_official 32:58d485b73390 235 __HAL_UART_CLEAR_OREFLAG(&UartHandle);
mbed_official 32:58d485b73390 236 }
bogdanm 0:9b334a45a8ff 237 }
bogdanm 0:9b334a45a8ff 238 }
bogdanm 0:9b334a45a8ff 239
bogdanm 0:9b334a45a8ff 240 static void uart1_irq(void)
bogdanm 0:9b334a45a8ff 241 {
bogdanm 0:9b334a45a8ff 242 uart_irq(UART_1, 0);
bogdanm 0:9b334a45a8ff 243 }
bogdanm 0:9b334a45a8ff 244
bogdanm 0:9b334a45a8ff 245 static void uart2_irq(void)
bogdanm 0:9b334a45a8ff 246 {
bogdanm 0:9b334a45a8ff 247 uart_irq(UART_2, 1);
bogdanm 0:9b334a45a8ff 248 }
bogdanm 0:9b334a45a8ff 249
bogdanm 0:9b334a45a8ff 250 static void uart3_irq(void)
bogdanm 0:9b334a45a8ff 251 {
bogdanm 0:9b334a45a8ff 252 uart_irq(UART_3, 2);
bogdanm 0:9b334a45a8ff 253 }
bogdanm 0:9b334a45a8ff 254
mbed_official 16:75201d1ad908 255 #if defined(UART4_BASE)
bogdanm 0:9b334a45a8ff 256 static void uart4_irq(void)
bogdanm 0:9b334a45a8ff 257 {
bogdanm 0:9b334a45a8ff 258 uart_irq(UART_4, 3);
bogdanm 0:9b334a45a8ff 259 }
bogdanm 0:9b334a45a8ff 260 #endif
bogdanm 0:9b334a45a8ff 261
mbed_official 16:75201d1ad908 262 #if defined(UART5_BASE)
bogdanm 0:9b334a45a8ff 263 static void uart5_irq(void)
bogdanm 0:9b334a45a8ff 264 {
bogdanm 0:9b334a45a8ff 265 uart_irq(UART_5, 4);
bogdanm 0:9b334a45a8ff 266 }
bogdanm 0:9b334a45a8ff 267 #endif
bogdanm 0:9b334a45a8ff 268
bogdanm 0:9b334a45a8ff 269 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
bogdanm 0:9b334a45a8ff 270 {
bogdanm 0:9b334a45a8ff 271 irq_handler = handler;
bogdanm 0:9b334a45a8ff 272 serial_irq_ids[obj->index] = id;
bogdanm 0:9b334a45a8ff 273 }
bogdanm 0:9b334a45a8ff 274
bogdanm 0:9b334a45a8ff 275 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
bogdanm 0:9b334a45a8ff 276 {
bogdanm 0:9b334a45a8ff 277 IRQn_Type irq_n = (IRQn_Type)0;
bogdanm 0:9b334a45a8ff 278 uint32_t vector = 0;
bogdanm 0:9b334a45a8ff 279
bogdanm 0:9b334a45a8ff 280 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 281
bogdanm 0:9b334a45a8ff 282 if (obj->uart == UART_1) {
bogdanm 0:9b334a45a8ff 283 irq_n = USART1_IRQn;
bogdanm 0:9b334a45a8ff 284 vector = (uint32_t)&uart1_irq;
bogdanm 0:9b334a45a8ff 285 }
bogdanm 0:9b334a45a8ff 286
bogdanm 0:9b334a45a8ff 287 if (obj->uart == UART_2) {
bogdanm 0:9b334a45a8ff 288 irq_n = USART2_IRQn;
bogdanm 0:9b334a45a8ff 289 vector = (uint32_t)&uart2_irq;
bogdanm 0:9b334a45a8ff 290 }
bogdanm 0:9b334a45a8ff 291
bogdanm 0:9b334a45a8ff 292 if (obj->uart == UART_3) {
bogdanm 0:9b334a45a8ff 293 irq_n = USART3_IRQn;
bogdanm 0:9b334a45a8ff 294 vector = (uint32_t)&uart3_irq;
bogdanm 0:9b334a45a8ff 295 }
bogdanm 0:9b334a45a8ff 296
mbed_official 16:75201d1ad908 297 #if defined(UART4_BASE)
bogdanm 0:9b334a45a8ff 298 if (obj->uart == UART_4) {
bogdanm 0:9b334a45a8ff 299 irq_n = UART4_IRQn;
bogdanm 0:9b334a45a8ff 300 vector = (uint32_t)&uart4_irq;
bogdanm 0:9b334a45a8ff 301 }
bogdanm 0:9b334a45a8ff 302 #endif
bogdanm 0:9b334a45a8ff 303
mbed_official 16:75201d1ad908 304 #if defined(UART5_BASE)
bogdanm 0:9b334a45a8ff 305 if (obj->uart == UART_5) {
bogdanm 0:9b334a45a8ff 306 irq_n = UART5_IRQn;
bogdanm 0:9b334a45a8ff 307 vector = (uint32_t)&uart5_irq;
bogdanm 0:9b334a45a8ff 308 }
bogdanm 0:9b334a45a8ff 309 #endif
bogdanm 0:9b334a45a8ff 310
bogdanm 0:9b334a45a8ff 311 if (enable) {
bogdanm 0:9b334a45a8ff 312
bogdanm 0:9b334a45a8ff 313 if (irq == RxIrq) {
bogdanm 0:9b334a45a8ff 314 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
bogdanm 0:9b334a45a8ff 315 } else { // TxIrq
bogdanm 0:9b334a45a8ff 316 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
bogdanm 0:9b334a45a8ff 317 }
bogdanm 0:9b334a45a8ff 318
bogdanm 0:9b334a45a8ff 319 NVIC_SetVector(irq_n, vector);
bogdanm 0:9b334a45a8ff 320 NVIC_EnableIRQ(irq_n);
bogdanm 0:9b334a45a8ff 321
bogdanm 0:9b334a45a8ff 322 } else { // disable
bogdanm 0:9b334a45a8ff 323
bogdanm 0:9b334a45a8ff 324 int all_disabled = 0;
bogdanm 0:9b334a45a8ff 325
bogdanm 0:9b334a45a8ff 326 if (irq == RxIrq) {
bogdanm 0:9b334a45a8ff 327 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
bogdanm 0:9b334a45a8ff 328 // Check if TxIrq is disabled too
bogdanm 0:9b334a45a8ff 329 if ((UartHandle.Instance->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
bogdanm 0:9b334a45a8ff 330 } else { // TxIrq
bogdanm 0:9b334a45a8ff 331 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TXE);
bogdanm 0:9b334a45a8ff 332 // Check if RxIrq is disabled too
bogdanm 0:9b334a45a8ff 333 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
bogdanm 0:9b334a45a8ff 334 }
bogdanm 0:9b334a45a8ff 335
bogdanm 0:9b334a45a8ff 336 if (all_disabled) NVIC_DisableIRQ(irq_n);
bogdanm 0:9b334a45a8ff 337
bogdanm 0:9b334a45a8ff 338 }
bogdanm 0:9b334a45a8ff 339 }
bogdanm 0:9b334a45a8ff 340
bogdanm 0:9b334a45a8ff 341 /******************************************************************************
bogdanm 0:9b334a45a8ff 342 * READ/WRITE
bogdanm 0:9b334a45a8ff 343 ******************************************************************************/
bogdanm 0:9b334a45a8ff 344
bogdanm 0:9b334a45a8ff 345 int serial_getc(serial_t *obj)
bogdanm 0:9b334a45a8ff 346 {
bogdanm 0:9b334a45a8ff 347 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 348 while (!serial_readable(obj));
bogdanm 0:9b334a45a8ff 349 return (int)(uart->DR & 0xFF);
bogdanm 0:9b334a45a8ff 350 }
bogdanm 0:9b334a45a8ff 351
bogdanm 0:9b334a45a8ff 352 void serial_putc(serial_t *obj, int c)
bogdanm 0:9b334a45a8ff 353 {
bogdanm 0:9b334a45a8ff 354 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 355 while (!serial_writable(obj));
bogdanm 0:9b334a45a8ff 356 uart->DR = (uint32_t)(c & 0xFF);
bogdanm 0:9b334a45a8ff 357 }
bogdanm 0:9b334a45a8ff 358
bogdanm 0:9b334a45a8ff 359 int serial_readable(serial_t *obj)
bogdanm 0:9b334a45a8ff 360 {
bogdanm 0:9b334a45a8ff 361 int status;
bogdanm 0:9b334a45a8ff 362 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 363 // Check if data is received
bogdanm 0:9b334a45a8ff 364 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
bogdanm 0:9b334a45a8ff 365 return status;
bogdanm 0:9b334a45a8ff 366 }
bogdanm 0:9b334a45a8ff 367
bogdanm 0:9b334a45a8ff 368 int serial_writable(serial_t *obj)
bogdanm 0:9b334a45a8ff 369 {
bogdanm 0:9b334a45a8ff 370 int status;
bogdanm 0:9b334a45a8ff 371 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 372 // Check if data is transmitted
bogdanm 0:9b334a45a8ff 373 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
bogdanm 0:9b334a45a8ff 374 return status;
bogdanm 0:9b334a45a8ff 375 }
bogdanm 0:9b334a45a8ff 376
bogdanm 0:9b334a45a8ff 377 void serial_clear(serial_t *obj)
bogdanm 0:9b334a45a8ff 378 {
bogdanm 0:9b334a45a8ff 379 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 380 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TXE);
bogdanm 0:9b334a45a8ff 381 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
bogdanm 0:9b334a45a8ff 382 }
bogdanm 0:9b334a45a8ff 383
bogdanm 0:9b334a45a8ff 384 void serial_pinout_tx(PinName tx)
bogdanm 0:9b334a45a8ff 385 {
bogdanm 0:9b334a45a8ff 386 pinmap_pinout(tx, PinMap_UART_TX);
bogdanm 0:9b334a45a8ff 387 }
bogdanm 0:9b334a45a8ff 388
bogdanm 0:9b334a45a8ff 389 void serial_break_set(serial_t *obj)
bogdanm 0:9b334a45a8ff 390 {
bogdanm 0:9b334a45a8ff 391 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 392 HAL_LIN_SendBreak(&UartHandle);
bogdanm 0:9b334a45a8ff 393 }
bogdanm 0:9b334a45a8ff 394
bogdanm 0:9b334a45a8ff 395 void serial_break_clear(serial_t *obj)
bogdanm 0:9b334a45a8ff 396 {
bogdanm 0:9b334a45a8ff 397 }
bogdanm 0:9b334a45a8ff 398
bogdanm 0:9b334a45a8ff 399 #endif