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mbed library sources

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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_STM/TARGET_STM32F7/serial_api.c@616:ade316e51a72, 2015-09-02 (annotated)

Committer:
mbed_official
Date:
Wed Sep 02 17:15:54 2015 +0100
Revision:
616:ade316e51a72
Parent:
582:a89625bcd809 
Synchronized with git revision 8a32badea1a72a2c32d77537eb647f39025ce86c



Full URL: https://github.com/mbedmicro/mbed/commit/8a32badea1a72a2c32d77537eb647f39025ce86c/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 573:ad23fe03a082 1 /* mbed Microcontroller Library
mbed_official 573:ad23fe03a082 2 *******************************************************************************
mbed_official 573:ad23fe03a082 3 * Copyright (c) 2015, STMicroelectronics
mbed_official 573:ad23fe03a082 4 * All rights reserved.
mbed_official 573:ad23fe03a082 5 *
mbed_official 573:ad23fe03a082 6 * Redistribution and use in source and binary forms, with or without
mbed_official 573:ad23fe03a082 7 * modification, are permitted provided that the following conditions are met:
mbed_official 573:ad23fe03a082 8 *
mbed_official 573:ad23fe03a082 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 573:ad23fe03a082 10 * this list of conditions and the following disclaimer.
mbed_official 573:ad23fe03a082 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 573:ad23fe03a082 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 573:ad23fe03a082 13 * and/or other materials provided with the distribution.
mbed_official 573:ad23fe03a082 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 573:ad23fe03a082 15 * may be used to endorse or promote products derived from this software
mbed_official 573:ad23fe03a082 16 * without specific prior written permission.
mbed_official 573:ad23fe03a082 17 *
mbed_official 573:ad23fe03a082 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 573:ad23fe03a082 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 573:ad23fe03a082 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 573:ad23fe03a082 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 573:ad23fe03a082 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 573:ad23fe03a082 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 573:ad23fe03a082 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 573:ad23fe03a082 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 573:ad23fe03a082 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 573:ad23fe03a082 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 573:ad23fe03a082 28 *******************************************************************************
mbed_official 573:ad23fe03a082 29 */
mbed_official 573:ad23fe03a082 30 #include "mbed_assert.h"
mbed_official 573:ad23fe03a082 31 #include "serial_api.h"
mbed_official 573:ad23fe03a082 32
mbed_official 573:ad23fe03a082 33 #if DEVICE_SERIAL
mbed_official 573:ad23fe03a082 34
mbed_official 573:ad23fe03a082 35 #include "cmsis.h"
mbed_official 573:ad23fe03a082 36 #include "pinmap.h"
mbed_official 573:ad23fe03a082 37 #include <string.h>
mbed_official 573:ad23fe03a082 38 #include "PeripheralPins.h"
mbed_official 582:a89625bcd809 39 #include "mbed_error.h"
mbed_official 573:ad23fe03a082 40
mbed_official 573:ad23fe03a082 41 #define UART_NUM (8)
mbed_official 573:ad23fe03a082 42
mbed_official 573:ad23fe03a082 43 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0, 0, 0, 0, 0, 0};
mbed_official 573:ad23fe03a082 44
mbed_official 573:ad23fe03a082 45 static uart_irq_handler irq_handler;
mbed_official 573:ad23fe03a082 46
mbed_official 573:ad23fe03a082 47 UART_HandleTypeDef UartHandle;
mbed_official 573:ad23fe03a082 48
mbed_official 573:ad23fe03a082 49 int stdio_uart_inited = 0;
mbed_official 573:ad23fe03a082 50 serial_t stdio_uart;
mbed_official 573:ad23fe03a082 51
mbed_official 573:ad23fe03a082 52 static void init_uart(serial_t *obj)
mbed_official 573:ad23fe03a082 53 {
mbed_official 573:ad23fe03a082 54 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 573:ad23fe03a082 55
mbed_official 573:ad23fe03a082 56 UartHandle.Init.BaudRate = obj->baudrate;
mbed_official 573:ad23fe03a082 57 UartHandle.Init.WordLength = obj->databits;
mbed_official 573:ad23fe03a082 58 UartHandle.Init.StopBits = obj->stopbits;
mbed_official 573:ad23fe03a082 59 UartHandle.Init.Parity = obj->parity;
mbed_official 573:ad23fe03a082 60 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
mbed_official 573:ad23fe03a082 61
mbed_official 573:ad23fe03a082 62 if (obj->pin_rx == NC) {
mbed_official 573:ad23fe03a082 63 UartHandle.Init.Mode = UART_MODE_TX;
mbed_official 573:ad23fe03a082 64 } else if (obj->pin_tx == NC) {
mbed_official 573:ad23fe03a082 65 UartHandle.Init.Mode = UART_MODE_RX;
mbed_official 573:ad23fe03a082 66 } else {
mbed_official 573:ad23fe03a082 67 UartHandle.Init.Mode = UART_MODE_TX_RX;
mbed_official 573:ad23fe03a082 68 }
mbed_official 573:ad23fe03a082 69
mbed_official 582:a89625bcd809 70 if (HAL_UART_Init(&UartHandle) != HAL_OK) {
mbed_official 582:a89625bcd809 71 error("Cannot initialize UART");
mbed_official 582:a89625bcd809 72 }
mbed_official 573:ad23fe03a082 73 }
mbed_official 573:ad23fe03a082 74
mbed_official 573:ad23fe03a082 75 void serial_init(serial_t *obj, PinName tx, PinName rx)
mbed_official 573:ad23fe03a082 76 {
mbed_official 573:ad23fe03a082 77 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 573:ad23fe03a082 78 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 573:ad23fe03a082 79 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 573:ad23fe03a082 80
mbed_official 573:ad23fe03a082 81 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 573:ad23fe03a082 82 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 573:ad23fe03a082 83 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 573:ad23fe03a082 84
mbed_official 573:ad23fe03a082 85 // Enable USART clock
mbed_official 573:ad23fe03a082 86 switch (obj->uart) {
mbed_official 573:ad23fe03a082 87 case UART_1:
mbed_official 573:ad23fe03a082 88 __USART1_CLK_ENABLE();
mbed_official 573:ad23fe03a082 89 obj->index = 0;
mbed_official 573:ad23fe03a082 90 break;
mbed_official 573:ad23fe03a082 91 case UART_2:
mbed_official 573:ad23fe03a082 92 __USART2_CLK_ENABLE();
mbed_official 573:ad23fe03a082 93 obj->index = 1;
mbed_official 573:ad23fe03a082 94 break;
mbed_official 573:ad23fe03a082 95 #if defined(USART3_BASE)
mbed_official 573:ad23fe03a082 96 case UART_3:
mbed_official 573:ad23fe03a082 97 __USART3_CLK_ENABLE();
mbed_official 573:ad23fe03a082 98 obj->index = 2;
mbed_official 573:ad23fe03a082 99 break;
mbed_official 573:ad23fe03a082 100 #endif
mbed_official 573:ad23fe03a082 101 #if defined(UART4_BASE)
mbed_official 573:ad23fe03a082 102 case UART_4:
mbed_official 573:ad23fe03a082 103 __UART4_CLK_ENABLE();
mbed_official 573:ad23fe03a082 104 obj->index = 3;
mbed_official 573:ad23fe03a082 105 break;
mbed_official 573:ad23fe03a082 106 #endif
mbed_official 573:ad23fe03a082 107 #if defined(UART5_BASE)
mbed_official 573:ad23fe03a082 108 case UART_5:
mbed_official 573:ad23fe03a082 109 __UART5_CLK_ENABLE();
mbed_official 573:ad23fe03a082 110 obj->index = 4;
mbed_official 573:ad23fe03a082 111 break;
mbed_official 573:ad23fe03a082 112 #endif
mbed_official 573:ad23fe03a082 113 case UART_6:
mbed_official 573:ad23fe03a082 114 __USART6_CLK_ENABLE();
mbed_official 573:ad23fe03a082 115 obj->index = 5;
mbed_official 573:ad23fe03a082 116 break;
mbed_official 573:ad23fe03a082 117 #if defined(UART7_BASE)
mbed_official 573:ad23fe03a082 118 case UART_7:
mbed_official 573:ad23fe03a082 119 __UART7_CLK_ENABLE();
mbed_official 573:ad23fe03a082 120 obj->index = 6;
mbed_official 573:ad23fe03a082 121 break;
mbed_official 573:ad23fe03a082 122 #endif
mbed_official 573:ad23fe03a082 123 #if defined(UART8_BASE)
mbed_official 573:ad23fe03a082 124 case UART_8:
mbed_official 573:ad23fe03a082 125 __UART8_CLK_ENABLE();
mbed_official 573:ad23fe03a082 126 obj->index = 7;
mbed_official 573:ad23fe03a082 127 break;
mbed_official 573:ad23fe03a082 128 #endif
mbed_official 573:ad23fe03a082 129 }
mbed_official 573:ad23fe03a082 130
mbed_official 573:ad23fe03a082 131 // Configure the UART pins
mbed_official 573:ad23fe03a082 132 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 573:ad23fe03a082 133 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 573:ad23fe03a082 134 if (tx != NC) {
mbed_official 573:ad23fe03a082 135 pin_mode(tx, PullUp);
mbed_official 573:ad23fe03a082 136 }
mbed_official 573:ad23fe03a082 137 if (rx != NC) {
mbed_official 573:ad23fe03a082 138 pin_mode(rx, PullUp);
mbed_official 573:ad23fe03a082 139 }
mbed_official 573:ad23fe03a082 140
mbed_official 573:ad23fe03a082 141 // Configure UART
mbed_official 573:ad23fe03a082 142 obj->baudrate = 9600;
mbed_official 573:ad23fe03a082 143 obj->databits = UART_WORDLENGTH_8B;
mbed_official 573:ad23fe03a082 144 obj->stopbits = UART_STOPBITS_1;
mbed_official 573:ad23fe03a082 145 obj->parity = UART_PARITY_NONE;
mbed_official 573:ad23fe03a082 146
mbed_official 573:ad23fe03a082 147 obj->pin_tx = tx;
mbed_official 573:ad23fe03a082 148 obj->pin_rx = rx;
mbed_official 573:ad23fe03a082 149
mbed_official 573:ad23fe03a082 150 init_uart(obj);
mbed_official 573:ad23fe03a082 151
mbed_official 573:ad23fe03a082 152 // For stdio management
mbed_official 573:ad23fe03a082 153 if (obj->uart == STDIO_UART) {
mbed_official 573:ad23fe03a082 154 stdio_uart_inited = 1;
mbed_official 573:ad23fe03a082 155 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 573:ad23fe03a082 156 }
mbed_official 573:ad23fe03a082 157 }
mbed_official 573:ad23fe03a082 158
mbed_official 573:ad23fe03a082 159 void serial_free(serial_t *obj)
mbed_official 573:ad23fe03a082 160 {
mbed_official 573:ad23fe03a082 161 // Reset UART and disable clock
mbed_official 573:ad23fe03a082 162 switch (obj->uart) {
mbed_official 573:ad23fe03a082 163 case UART_1:
mbed_official 573:ad23fe03a082 164 __USART1_FORCE_RESET();
mbed_official 573:ad23fe03a082 165 __USART1_RELEASE_RESET();
mbed_official 573:ad23fe03a082 166 __USART1_CLK_DISABLE();
mbed_official 573:ad23fe03a082 167 break;
mbed_official 573:ad23fe03a082 168 case UART_2:
mbed_official 573:ad23fe03a082 169 __USART2_FORCE_RESET();
mbed_official 573:ad23fe03a082 170 __USART2_RELEASE_RESET();
mbed_official 573:ad23fe03a082 171 __USART2_CLK_DISABLE();
mbed_official 573:ad23fe03a082 172 break;
mbed_official 573:ad23fe03a082 173 #if defined(USART3_BASE)
mbed_official 573:ad23fe03a082 174 case UART_3:
mbed_official 573:ad23fe03a082 175 __USART3_FORCE_RESET();
mbed_official 573:ad23fe03a082 176 __USART3_RELEASE_RESET();
mbed_official 573:ad23fe03a082 177 __USART3_CLK_DISABLE();
mbed_official 573:ad23fe03a082 178 break;
mbed_official 573:ad23fe03a082 179 #endif
mbed_official 573:ad23fe03a082 180 #if defined(UART4_BASE)
mbed_official 573:ad23fe03a082 181 case UART_4:
mbed_official 573:ad23fe03a082 182 __UART4_FORCE_RESET();
mbed_official 573:ad23fe03a082 183 __UART4_RELEASE_RESET();
mbed_official 573:ad23fe03a082 184 __UART4_CLK_DISABLE();
mbed_official 573:ad23fe03a082 185 break;
mbed_official 573:ad23fe03a082 186 #endif
mbed_official 573:ad23fe03a082 187 #if defined(UART5_BASE)
mbed_official 573:ad23fe03a082 188 case UART_5:
mbed_official 573:ad23fe03a082 189 __UART5_FORCE_RESET();
mbed_official 573:ad23fe03a082 190 __UART5_RELEASE_RESET();
mbed_official 573:ad23fe03a082 191 __UART5_CLK_DISABLE();
mbed_official 573:ad23fe03a082 192 break;
mbed_official 573:ad23fe03a082 193 #endif
mbed_official 573:ad23fe03a082 194 case UART_6:
mbed_official 573:ad23fe03a082 195 __USART6_FORCE_RESET();
mbed_official 573:ad23fe03a082 196 __USART6_RELEASE_RESET();
mbed_official 573:ad23fe03a082 197 __USART6_CLK_DISABLE();
mbed_official 573:ad23fe03a082 198 break;
mbed_official 573:ad23fe03a082 199 #if defined(UART7_BASE)
mbed_official 573:ad23fe03a082 200 case UART_7:
mbed_official 573:ad23fe03a082 201 __UART7_FORCE_RESET();
mbed_official 573:ad23fe03a082 202 __UART7_RELEASE_RESET();
mbed_official 573:ad23fe03a082 203 __UART7_CLK_DISABLE();
mbed_official 573:ad23fe03a082 204 break;
mbed_official 573:ad23fe03a082 205 #endif
mbed_official 573:ad23fe03a082 206 #if defined(UART8_BASE)
mbed_official 573:ad23fe03a082 207 case UART_8:
mbed_official 573:ad23fe03a082 208 __UART8_FORCE_RESET();
mbed_official 573:ad23fe03a082 209 __UART8_RELEASE_RESET();
mbed_official 573:ad23fe03a082 210 __UART8_CLK_DISABLE();
mbed_official 573:ad23fe03a082 211 break;
mbed_official 573:ad23fe03a082 212 #endif
mbed_official 573:ad23fe03a082 213 }
mbed_official 573:ad23fe03a082 214 // Configure GPIOs
mbed_official 573:ad23fe03a082 215 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 573:ad23fe03a082 216 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 573:ad23fe03a082 217
mbed_official 573:ad23fe03a082 218 serial_irq_ids[obj->index] = 0;
mbed_official 573:ad23fe03a082 219 }
mbed_official 573:ad23fe03a082 220
mbed_official 573:ad23fe03a082 221 void serial_baud(serial_t *obj, int baudrate)
mbed_official 573:ad23fe03a082 222 {
mbed_official 573:ad23fe03a082 223 obj->baudrate = baudrate;
mbed_official 573:ad23fe03a082 224 init_uart(obj);
mbed_official 573:ad23fe03a082 225 }
mbed_official 573:ad23fe03a082 226
mbed_official 573:ad23fe03a082 227 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
mbed_official 573:ad23fe03a082 228 {
mbed_official 573:ad23fe03a082 229 if (data_bits == 9) {
mbed_official 573:ad23fe03a082 230 obj->databits = UART_WORDLENGTH_9B;
mbed_official 573:ad23fe03a082 231 } else {
mbed_official 573:ad23fe03a082 232 obj->databits = UART_WORDLENGTH_8B;
mbed_official 573:ad23fe03a082 233 }
mbed_official 573:ad23fe03a082 234
mbed_official 573:ad23fe03a082 235 switch (parity) {
mbed_official 573:ad23fe03a082 236 case ParityOdd:
mbed_official 573:ad23fe03a082 237 case ParityForced0:
mbed_official 573:ad23fe03a082 238 obj->parity = UART_PARITY_ODD;
mbed_official 573:ad23fe03a082 239 break;
mbed_official 573:ad23fe03a082 240 case ParityEven:
mbed_official 573:ad23fe03a082 241 case ParityForced1:
mbed_official 573:ad23fe03a082 242 obj->parity = UART_PARITY_EVEN;
mbed_official 573:ad23fe03a082 243 break;
mbed_official 573:ad23fe03a082 244 default: // ParityNone
mbed_official 573:ad23fe03a082 245 obj->parity = UART_PARITY_NONE;
mbed_official 573:ad23fe03a082 246 break;
mbed_official 573:ad23fe03a082 247 }
mbed_official 573:ad23fe03a082 248
mbed_official 573:ad23fe03a082 249 if (stop_bits == 2) {
mbed_official 573:ad23fe03a082 250 obj->stopbits = UART_STOPBITS_2;
mbed_official 573:ad23fe03a082 251 } else {
mbed_official 573:ad23fe03a082 252 obj->stopbits = UART_STOPBITS_1;
mbed_official 573:ad23fe03a082 253 }
mbed_official 573:ad23fe03a082 254
mbed_official 573:ad23fe03a082 255 init_uart(obj);
mbed_official 573:ad23fe03a082 256 }
mbed_official 573:ad23fe03a082 257
mbed_official 573:ad23fe03a082 258 /******************************************************************************
mbed_official 573:ad23fe03a082 259 * INTERRUPTS HANDLING
mbed_official 573:ad23fe03a082 260 ******************************************************************************/
mbed_official 573:ad23fe03a082 261
mbed_official 573:ad23fe03a082 262 static void uart_irq(UARTName name, int id)
mbed_official 573:ad23fe03a082 263 {
mbed_official 573:ad23fe03a082 264 UartHandle.Instance = (USART_TypeDef *)name;
mbed_official 573:ad23fe03a082 265 if (serial_irq_ids[id] != 0) {
mbed_official 573:ad23fe03a082 266 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
mbed_official 573:ad23fe03a082 267 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 573:ad23fe03a082 268 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TC);
mbed_official 573:ad23fe03a082 269 }
mbed_official 573:ad23fe03a082 270 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
mbed_official 573:ad23fe03a082 271 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 573:ad23fe03a082 272 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_RXNE);
mbed_official 573:ad23fe03a082 273 }
mbed_official 573:ad23fe03a082 274 }
mbed_official 573:ad23fe03a082 275 }
mbed_official 573:ad23fe03a082 276
mbed_official 573:ad23fe03a082 277 static void uart1_irq(void)
mbed_official 573:ad23fe03a082 278 {
mbed_official 573:ad23fe03a082 279 uart_irq(UART_1, 0);
mbed_official 573:ad23fe03a082 280 }
mbed_official 573:ad23fe03a082 281
mbed_official 573:ad23fe03a082 282 static void uart2_irq(void)
mbed_official 573:ad23fe03a082 283 {
mbed_official 573:ad23fe03a082 284 uart_irq(UART_2, 1);
mbed_official 573:ad23fe03a082 285 }
mbed_official 573:ad23fe03a082 286
mbed_official 573:ad23fe03a082 287 #if defined(USART3_BASE)
mbed_official 582:a89625bcd809 288 static void uart3_irq(void)
mbed_official 573:ad23fe03a082 289 {
mbed_official 573:ad23fe03a082 290 uart_irq(UART_3, 2);
mbed_official 573:ad23fe03a082 291 }
mbed_official 573:ad23fe03a082 292 #endif
mbed_official 573:ad23fe03a082 293
mbed_official 573:ad23fe03a082 294 #if defined(UART4_BASE)
mbed_official 582:a89625bcd809 295 static void uart4_irq(void)
mbed_official 573:ad23fe03a082 296 {
mbed_official 573:ad23fe03a082 297 uart_irq(UART_4, 3);
mbed_official 573:ad23fe03a082 298 }
mbed_official 573:ad23fe03a082 299 #endif
mbed_official 573:ad23fe03a082 300
mbed_official 573:ad23fe03a082 301 #if defined(UART5_BASE)
mbed_official 582:a89625bcd809 302 static void uart5_irq(void)
mbed_official 573:ad23fe03a082 303 {
mbed_official 573:ad23fe03a082 304 uart_irq(UART_5, 4);
mbed_official 573:ad23fe03a082 305 }
mbed_official 573:ad23fe03a082 306 #endif
mbed_official 573:ad23fe03a082 307
mbed_official 573:ad23fe03a082 308 static void uart6_irq(void)
mbed_official 573:ad23fe03a082 309 {
mbed_official 573:ad23fe03a082 310 uart_irq(UART_6, 5);
mbed_official 573:ad23fe03a082 311 }
mbed_official 573:ad23fe03a082 312
mbed_official 573:ad23fe03a082 313 #if defined(UART7_BASE)
mbed_official 582:a89625bcd809 314 static void uart7_irq(void)
mbed_official 573:ad23fe03a082 315 {
mbed_official 573:ad23fe03a082 316 uart_irq(UART_7, 6);
mbed_official 573:ad23fe03a082 317 }
mbed_official 573:ad23fe03a082 318 #endif
mbed_official 573:ad23fe03a082 319
mbed_official 573:ad23fe03a082 320 #if defined(UART8_BASE)
mbed_official 582:a89625bcd809 321 static void uart8_irq(void)
mbed_official 573:ad23fe03a082 322 {
mbed_official 573:ad23fe03a082 323 uart_irq(UART_8, 7);
mbed_official 573:ad23fe03a082 324 }
mbed_official 573:ad23fe03a082 325 #endif
mbed_official 573:ad23fe03a082 326
mbed_official 573:ad23fe03a082 327 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
mbed_official 573:ad23fe03a082 328 {
mbed_official 573:ad23fe03a082 329 irq_handler = handler;
mbed_official 573:ad23fe03a082 330 serial_irq_ids[obj->index] = id;
mbed_official 573:ad23fe03a082 331 }
mbed_official 573:ad23fe03a082 332
mbed_official 573:ad23fe03a082 333 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
mbed_official 573:ad23fe03a082 334 {
mbed_official 573:ad23fe03a082 335 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 573:ad23fe03a082 336 uint32_t vector = 0;
mbed_official 573:ad23fe03a082 337
mbed_official 573:ad23fe03a082 338 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 573:ad23fe03a082 339
mbed_official 573:ad23fe03a082 340 switch (obj->uart) {
mbed_official 573:ad23fe03a082 341 case UART_1:
mbed_official 573:ad23fe03a082 342 irq_n = USART1_IRQn;
mbed_official 573:ad23fe03a082 343 vector = (uint32_t)&uart1_irq;
mbed_official 573:ad23fe03a082 344 break;
mbed_official 573:ad23fe03a082 345
mbed_official 573:ad23fe03a082 346 case UART_2:
mbed_official 573:ad23fe03a082 347 irq_n = USART2_IRQn;
mbed_official 573:ad23fe03a082 348 vector = (uint32_t)&uart2_irq;
mbed_official 573:ad23fe03a082 349 break;
mbed_official 573:ad23fe03a082 350 #if defined(USART3_BASE)
mbed_official 573:ad23fe03a082 351 case UART_3:
mbed_official 573:ad23fe03a082 352 irq_n = USART3_IRQn;
mbed_official 573:ad23fe03a082 353 vector = (uint32_t)&uart3_irq;
mbed_official 573:ad23fe03a082 354 break;
mbed_official 573:ad23fe03a082 355 #endif
mbed_official 573:ad23fe03a082 356 #if defined(UART4_BASE)
mbed_official 573:ad23fe03a082 357 case UART_4:
mbed_official 573:ad23fe03a082 358 irq_n = UART4_IRQn;
mbed_official 573:ad23fe03a082 359 vector = (uint32_t)&uart4_irq;
mbed_official 573:ad23fe03a082 360 break;
mbed_official 573:ad23fe03a082 361 #endif
mbed_official 573:ad23fe03a082 362 #if defined(UART5_BASE)
mbed_official 573:ad23fe03a082 363 case UART_5:
mbed_official 573:ad23fe03a082 364 irq_n = UART5_IRQn;
mbed_official 573:ad23fe03a082 365 vector = (uint32_t)&uart5_irq;
mbed_official 573:ad23fe03a082 366 break;
mbed_official 573:ad23fe03a082 367 #endif
mbed_official 573:ad23fe03a082 368 case UART_6:
mbed_official 573:ad23fe03a082 369 irq_n = USART6_IRQn;
mbed_official 573:ad23fe03a082 370 vector = (uint32_t)&uart6_irq;
mbed_official 573:ad23fe03a082 371 break;
mbed_official 573:ad23fe03a082 372 #if defined(UART7_BASE)
mbed_official 573:ad23fe03a082 373 case UART_7:
mbed_official 573:ad23fe03a082 374 irq_n = UART7_IRQn;
mbed_official 573:ad23fe03a082 375 vector = (uint32_t)&uart7_irq;
mbed_official 573:ad23fe03a082 376 break;
mbed_official 573:ad23fe03a082 377 #endif
mbed_official 573:ad23fe03a082 378 #if defined(UART8_BASE)
mbed_official 573:ad23fe03a082 379 case UART_8:
mbed_official 573:ad23fe03a082 380 irq_n = UART8_IRQn;
mbed_official 573:ad23fe03a082 381 vector = (uint32_t)&uart8_irq;
mbed_official 573:ad23fe03a082 382 break;
mbed_official 573:ad23fe03a082 383 #endif
mbed_official 573:ad23fe03a082 384 }
mbed_official 573:ad23fe03a082 385
mbed_official 573:ad23fe03a082 386 if (enable) {
mbed_official 573:ad23fe03a082 387
mbed_official 573:ad23fe03a082 388 if (irq == RxIrq) {
mbed_official 573:ad23fe03a082 389 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 573:ad23fe03a082 390 } else { // TxIrq
mbed_official 573:ad23fe03a082 391 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 573:ad23fe03a082 392 }
mbed_official 573:ad23fe03a082 393
mbed_official 573:ad23fe03a082 394 NVIC_SetVector(irq_n, vector);
mbed_official 573:ad23fe03a082 395 NVIC_EnableIRQ(irq_n);
mbed_official 573:ad23fe03a082 396
mbed_official 573:ad23fe03a082 397 } else { // disable
mbed_official 573:ad23fe03a082 398
mbed_official 573:ad23fe03a082 399 int all_disabled = 0;
mbed_official 573:ad23fe03a082 400
mbed_official 573:ad23fe03a082 401 if (irq == RxIrq) {
mbed_official 573:ad23fe03a082 402 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 573:ad23fe03a082 403 // Check if TxIrq is disabled too
mbed_official 573:ad23fe03a082 404 if ((UartHandle.Instance->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 573:ad23fe03a082 405 } else { // TxIrq
mbed_official 573:ad23fe03a082 406 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TXE);
mbed_official 573:ad23fe03a082 407 // Check if RxIrq is disabled too
mbed_official 573:ad23fe03a082 408 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 573:ad23fe03a082 409 }
mbed_official 573:ad23fe03a082 410
mbed_official 573:ad23fe03a082 411 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 573:ad23fe03a082 412
mbed_official 573:ad23fe03a082 413 }
mbed_official 573:ad23fe03a082 414 }
mbed_official 573:ad23fe03a082 415
mbed_official 573:ad23fe03a082 416 /******************************************************************************
mbed_official 573:ad23fe03a082 417 * READ/WRITE
mbed_official 573:ad23fe03a082 418 ******************************************************************************/
mbed_official 573:ad23fe03a082 419
mbed_official 573:ad23fe03a082 420 int serial_getc(serial_t *obj)
mbed_official 573:ad23fe03a082 421 {
mbed_official 573:ad23fe03a082 422 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 573:ad23fe03a082 423 while (!serial_readable(obj));
mbed_official 573:ad23fe03a082 424 return (int)(uart->RDR & 0x1FF);
mbed_official 573:ad23fe03a082 425 }
mbed_official 573:ad23fe03a082 426
mbed_official 573:ad23fe03a082 427 void serial_putc(serial_t *obj, int c)
mbed_official 573:ad23fe03a082 428 {
mbed_official 573:ad23fe03a082 429 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 573:ad23fe03a082 430 while (!serial_writable(obj));
mbed_official 573:ad23fe03a082 431 uart->TDR = (uint32_t)(c & 0x1FF);
mbed_official 573:ad23fe03a082 432 }
mbed_official 573:ad23fe03a082 433
mbed_official 573:ad23fe03a082 434 int serial_readable(serial_t *obj)
mbed_official 573:ad23fe03a082 435 {
mbed_official 573:ad23fe03a082 436 int status;
mbed_official 573:ad23fe03a082 437 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 573:ad23fe03a082 438 // Check if data is received
mbed_official 573:ad23fe03a082 439 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 573:ad23fe03a082 440 return status;
mbed_official 573:ad23fe03a082 441 }
mbed_official 573:ad23fe03a082 442
mbed_official 573:ad23fe03a082 443 int serial_writable(serial_t *obj)
mbed_official 573:ad23fe03a082 444 {
mbed_official 573:ad23fe03a082 445 int status;
mbed_official 573:ad23fe03a082 446 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 573:ad23fe03a082 447 // Check if data is transmitted
mbed_official 573:ad23fe03a082 448 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 573:ad23fe03a082 449 return status;
mbed_official 573:ad23fe03a082 450 }
mbed_official 573:ad23fe03a082 451
mbed_official 573:ad23fe03a082 452 void serial_clear(serial_t *obj)
mbed_official 573:ad23fe03a082 453 {
mbed_official 573:ad23fe03a082 454 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 573:ad23fe03a082 455 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TXE);
mbed_official 573:ad23fe03a082 456 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_RXNE);
mbed_official 573:ad23fe03a082 457 }
mbed_official 573:ad23fe03a082 458
mbed_official 573:ad23fe03a082 459 void serial_pinout_tx(PinName tx)
mbed_official 573:ad23fe03a082 460 {
mbed_official 573:ad23fe03a082 461 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 573:ad23fe03a082 462 }
mbed_official 573:ad23fe03a082 463
mbed_official 573:ad23fe03a082 464 void serial_break_set(serial_t *obj)
mbed_official 573:ad23fe03a082 465 {
mbed_official 573:ad23fe03a082 466 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 573:ad23fe03a082 467 HAL_LIN_SendBreak(&UartHandle);
mbed_official 573:ad23fe03a082 468 }
mbed_official 573:ad23fe03a082 469
mbed_official 573:ad23fe03a082 470 void serial_break_clear(serial_t *obj)
mbed_official 573:ad23fe03a082 471 {
mbed_official 573:ad23fe03a082 472 }
mbed_official 573:ad23fe03a082 473
mbed_official 573:ad23fe03a082 474 #endif