Krzysztof Sitko / mbed-dev-STM32F031K6

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targets/hal/TARGET_STM/TARGET_STM32F0/serial_api.c@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:
bogdanm
Date:
Thu Oct 01 15:25:22 2015 +0300
Revision:
0:9b334a45a8ff
Child:
5:ac9f6c2c45e8
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 <string.h>
bogdanm 0:9b334a45a8ff 38 #include "PeripheralPins.h"
bogdanm 0:9b334a45a8ff 39
bogdanm 0:9b334a45a8ff 40 #if defined (TARGET_STM32F091RC)
bogdanm 0:9b334a45a8ff 41 #define UART_NUM (8)
bogdanm 0:9b334a45a8ff 42
bogdanm 0:9b334a45a8ff 43 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0, 0, 0, 0, 0, 0};
bogdanm 0:9b334a45a8ff 44
bogdanm 0:9b334a45a8ff 45 #elif defined (TARGET_STM32F030R8) || defined (TARGET_STM32F051R8)
bogdanm 0:9b334a45a8ff 46 #define UART_NUM (2)
bogdanm 0:9b334a45a8ff 47
bogdanm 0:9b334a45a8ff 48 static uint32_t serial_irq_ids[UART_NUM] = {0, 0};
bogdanm 0:9b334a45a8ff 49
bogdanm 0:9b334a45a8ff 50 #elif defined (TARGET_STM32F031K6)
bogdanm 0:9b334a45a8ff 51 #define UART_NUM (1)
bogdanm 0:9b334a45a8ff 52
bogdanm 0:9b334a45a8ff 53 static uint32_t serial_irq_ids[UART_NUM] = {0};
bogdanm 0:9b334a45a8ff 54
bogdanm 0:9b334a45a8ff 55 #else
bogdanm 0:9b334a45a8ff 56 #define UART_NUM (4)
bogdanm 0:9b334a45a8ff 57
bogdanm 0:9b334a45a8ff 58 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0, 0};
bogdanm 0:9b334a45a8ff 59
bogdanm 0:9b334a45a8ff 60 #endif
bogdanm 0:9b334a45a8ff 61
bogdanm 0:9b334a45a8ff 62 static uart_irq_handler irq_handler;
bogdanm 0:9b334a45a8ff 63
bogdanm 0:9b334a45a8ff 64 UART_HandleTypeDef UartHandle;
bogdanm 0:9b334a45a8ff 65
bogdanm 0:9b334a45a8ff 66 int stdio_uart_inited = 0;
bogdanm 0:9b334a45a8ff 67 serial_t stdio_uart;
bogdanm 0:9b334a45a8ff 68
bogdanm 0:9b334a45a8ff 69 static void init_uart(serial_t *obj) {
bogdanm 0:9b334a45a8ff 70 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 71
bogdanm 0:9b334a45a8ff 72 UartHandle.Init.BaudRate = obj->baudrate;
bogdanm 0:9b334a45a8ff 73 UartHandle.Init.WordLength = obj->databits;
bogdanm 0:9b334a45a8ff 74 UartHandle.Init.StopBits = obj->stopbits;
bogdanm 0:9b334a45a8ff 75 UartHandle.Init.Parity = obj->parity;
bogdanm 0:9b334a45a8ff 76 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
bogdanm 0:9b334a45a8ff 77
bogdanm 0:9b334a45a8ff 78 if (obj->pin_rx == NC) {
bogdanm 0:9b334a45a8ff 79 UartHandle.Init.Mode = UART_MODE_TX;
bogdanm 0:9b334a45a8ff 80 } else if (obj->pin_tx == NC) {
bogdanm 0:9b334a45a8ff 81 UartHandle.Init.Mode = UART_MODE_RX;
bogdanm 0:9b334a45a8ff 82 } else {
bogdanm 0:9b334a45a8ff 83 UartHandle.Init.Mode = UART_MODE_TX_RX;
bogdanm 0:9b334a45a8ff 84 }
bogdanm 0:9b334a45a8ff 85
bogdanm 0:9b334a45a8ff 86 // Disable the reception overrun detection
bogdanm 0:9b334a45a8ff 87 UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_RXOVERRUNDISABLE_INIT;
bogdanm 0:9b334a45a8ff 88 UartHandle.AdvancedInit.OverrunDisable = UART_ADVFEATURE_OVERRUN_DISABLE;
bogdanm 0:9b334a45a8ff 89
bogdanm 0:9b334a45a8ff 90 HAL_UART_Init(&UartHandle);
bogdanm 0:9b334a45a8ff 91 }
bogdanm 0:9b334a45a8ff 92
bogdanm 0:9b334a45a8ff 93 void serial_init(serial_t *obj, PinName tx, PinName rx) {
bogdanm 0:9b334a45a8ff 94 // Determine the UART to use (UART_1, UART_2, ...)
bogdanm 0:9b334a45a8ff 95 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
bogdanm 0:9b334a45a8ff 96 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
bogdanm 0:9b334a45a8ff 97
bogdanm 0:9b334a45a8ff 98 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
bogdanm 0:9b334a45a8ff 99 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
bogdanm 0:9b334a45a8ff 100 MBED_ASSERT(obj->uart != (UARTName)NC);
bogdanm 0:9b334a45a8ff 101
bogdanm 0:9b334a45a8ff 102 // Enable USART clock
bogdanm 0:9b334a45a8ff 103 if (obj->uart == UART_1) {
bogdanm 0:9b334a45a8ff 104 __USART1_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 105 obj->index = 0;
bogdanm 0:9b334a45a8ff 106 }
bogdanm 0:9b334a45a8ff 107
bogdanm 0:9b334a45a8ff 108 #if defined USART2_BASE
bogdanm 0:9b334a45a8ff 109 if (obj->uart == UART_2) {
bogdanm 0:9b334a45a8ff 110 __USART2_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 111 obj->index = 1;
bogdanm 0:9b334a45a8ff 112 }
bogdanm 0:9b334a45a8ff 113 #endif
bogdanm 0:9b334a45a8ff 114
bogdanm 0:9b334a45a8ff 115 #if defined USART3_BASE
bogdanm 0:9b334a45a8ff 116 if (obj->uart == UART_3) {
bogdanm 0:9b334a45a8ff 117 __USART3_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 118 obj->index = 2;
bogdanm 0:9b334a45a8ff 119 }
bogdanm 0:9b334a45a8ff 120 #endif
bogdanm 0:9b334a45a8ff 121
bogdanm 0:9b334a45a8ff 122 #if defined USART4_BASE
bogdanm 0:9b334a45a8ff 123 if (obj->uart == UART_4) {
bogdanm 0:9b334a45a8ff 124 __USART4_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 125 obj->index = 3;
bogdanm 0:9b334a45a8ff 126 }
bogdanm 0:9b334a45a8ff 127 #endif
bogdanm 0:9b334a45a8ff 128
bogdanm 0:9b334a45a8ff 129 #if defined USART5_BASE
bogdanm 0:9b334a45a8ff 130 if (obj->uart == UART_5) {
bogdanm 0:9b334a45a8ff 131 __USART5_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 132 obj->index = 4;
bogdanm 0:9b334a45a8ff 133 }
bogdanm 0:9b334a45a8ff 134 #endif
bogdanm 0:9b334a45a8ff 135
bogdanm 0:9b334a45a8ff 136 #if defined USART6_BASE
bogdanm 0:9b334a45a8ff 137 if (obj->uart == UART_6) {
bogdanm 0:9b334a45a8ff 138 __USART6_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 139 obj->index = 5;
bogdanm 0:9b334a45a8ff 140 }
bogdanm 0:9b334a45a8ff 141 #endif
bogdanm 0:9b334a45a8ff 142
bogdanm 0:9b334a45a8ff 143 #if defined USART7_BASE
bogdanm 0:9b334a45a8ff 144 if (obj->uart == UART_7) {
bogdanm 0:9b334a45a8ff 145 __USART7_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 146 obj->index = 6;
bogdanm 0:9b334a45a8ff 147 }
bogdanm 0:9b334a45a8ff 148 #endif
bogdanm 0:9b334a45a8ff 149
bogdanm 0:9b334a45a8ff 150 #if defined USART8_BASE
bogdanm 0:9b334a45a8ff 151 if (obj->uart == UART_8) {
bogdanm 0:9b334a45a8ff 152 __USART8_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 153 obj->index = 7;
bogdanm 0:9b334a45a8ff 154 }
bogdanm 0:9b334a45a8ff 155 #endif
bogdanm 0:9b334a45a8ff 156
bogdanm 0:9b334a45a8ff 157 // Configure the UART pins
bogdanm 0:9b334a45a8ff 158 pinmap_pinout(tx, PinMap_UART_TX);
bogdanm 0:9b334a45a8ff 159 pinmap_pinout(rx, PinMap_UART_RX);
bogdanm 0:9b334a45a8ff 160 if (tx != NC) {
bogdanm 0:9b334a45a8ff 161 pin_mode(tx, PullUp);
bogdanm 0:9b334a45a8ff 162 }
bogdanm 0:9b334a45a8ff 163 if (rx != NC) {
bogdanm 0:9b334a45a8ff 164 pin_mode(rx, PullUp);
bogdanm 0:9b334a45a8ff 165 }
bogdanm 0:9b334a45a8ff 166
bogdanm 0:9b334a45a8ff 167 // Configure UART
bogdanm 0:9b334a45a8ff 168 obj->baudrate = 9600;
bogdanm 0:9b334a45a8ff 169 obj->databits = UART_WORDLENGTH_8B;
bogdanm 0:9b334a45a8ff 170 obj->stopbits = UART_STOPBITS_1;
bogdanm 0:9b334a45a8ff 171 obj->parity = UART_PARITY_NONE;
bogdanm 0:9b334a45a8ff 172
bogdanm 0:9b334a45a8ff 173 obj->pin_tx = tx;
bogdanm 0:9b334a45a8ff 174 obj->pin_rx = rx;
bogdanm 0:9b334a45a8ff 175
bogdanm 0:9b334a45a8ff 176 init_uart(obj);
bogdanm 0:9b334a45a8ff 177
bogdanm 0:9b334a45a8ff 178 // For stdio management
bogdanm 0:9b334a45a8ff 179 if (obj->uart == STDIO_UART) {
bogdanm 0:9b334a45a8ff 180 stdio_uart_inited = 1;
bogdanm 0:9b334a45a8ff 181 memcpy(&stdio_uart, obj, sizeof(serial_t));
bogdanm 0:9b334a45a8ff 182 }
bogdanm 0:9b334a45a8ff 183 }
bogdanm 0:9b334a45a8ff 184
bogdanm 0:9b334a45a8ff 185 void serial_free(serial_t *obj) {
bogdanm 0:9b334a45a8ff 186 // Reset UART and disable clock
bogdanm 0:9b334a45a8ff 187 if (obj->uart == UART_1) {
bogdanm 0:9b334a45a8ff 188 __USART1_FORCE_RESET();
bogdanm 0:9b334a45a8ff 189 __USART1_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 190 __USART1_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 191 }
bogdanm 0:9b334a45a8ff 192
bogdanm 0:9b334a45a8ff 193 #if defined(USART2_BASE)
bogdanm 0:9b334a45a8ff 194 if (obj->uart == UART_2) {
bogdanm 0:9b334a45a8ff 195 __USART2_FORCE_RESET();
bogdanm 0:9b334a45a8ff 196 __USART2_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 197 __USART2_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 198 }
bogdanm 0:9b334a45a8ff 199 #endif
bogdanm 0:9b334a45a8ff 200
bogdanm 0:9b334a45a8ff 201 #if defined USART3_BASE
bogdanm 0:9b334a45a8ff 202 if (obj->uart == UART_3) {
bogdanm 0:9b334a45a8ff 203 __USART3_FORCE_RESET();
bogdanm 0:9b334a45a8ff 204 __USART3_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 205 __USART3_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 206 }
bogdanm 0:9b334a45a8ff 207 #endif
bogdanm 0:9b334a45a8ff 208
bogdanm 0:9b334a45a8ff 209 #if defined USART4_BASE
bogdanm 0:9b334a45a8ff 210 if (obj->uart == UART_4) {
bogdanm 0:9b334a45a8ff 211 __USART4_FORCE_RESET();
bogdanm 0:9b334a45a8ff 212 __USART4_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 213 __USART4_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 214 }
bogdanm 0:9b334a45a8ff 215 #endif
bogdanm 0:9b334a45a8ff 216
bogdanm 0:9b334a45a8ff 217 #if defined USART5_BASE
bogdanm 0:9b334a45a8ff 218 if (obj->uart == UART_5) {
bogdanm 0:9b334a45a8ff 219 __USART5_FORCE_RESET();
bogdanm 0:9b334a45a8ff 220 __USART5_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 221 __USART5_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 222 }
bogdanm 0:9b334a45a8ff 223 #endif
bogdanm 0:9b334a45a8ff 224
bogdanm 0:9b334a45a8ff 225 #if defined USART6_BASE
bogdanm 0:9b334a45a8ff 226 if (obj->uart == UART_6) {
bogdanm 0:9b334a45a8ff 227 __USART6_FORCE_RESET();
bogdanm 0:9b334a45a8ff 228 __USART6_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 229 __USART6_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 230 }
bogdanm 0:9b334a45a8ff 231 #endif
bogdanm 0:9b334a45a8ff 232
bogdanm 0:9b334a45a8ff 233 #if defined USART7_BASE
bogdanm 0:9b334a45a8ff 234 if (obj->uart == UART_7) {
bogdanm 0:9b334a45a8ff 235 __USART7_FORCE_RESET();
bogdanm 0:9b334a45a8ff 236 __USART7_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 237 __USART7_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 238 }
bogdanm 0:9b334a45a8ff 239 #endif
bogdanm 0:9b334a45a8ff 240
bogdanm 0:9b334a45a8ff 241 #if defined USART8_BASE
bogdanm 0:9b334a45a8ff 242 if (obj->uart == UART_8) {
bogdanm 0:9b334a45a8ff 243 __USART8_FORCE_RESET();
bogdanm 0:9b334a45a8ff 244 __USART8_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 245 __USART8_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 246 }
bogdanm 0:9b334a45a8ff 247 #endif
bogdanm 0:9b334a45a8ff 248
bogdanm 0:9b334a45a8ff 249
bogdanm 0:9b334a45a8ff 250 // Configure GPIOs
bogdanm 0:9b334a45a8ff 251 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
bogdanm 0:9b334a45a8ff 252 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
bogdanm 0:9b334a45a8ff 253
bogdanm 0:9b334a45a8ff 254 serial_irq_ids[obj->index] = 0;
bogdanm 0:9b334a45a8ff 255 }
bogdanm 0:9b334a45a8ff 256
bogdanm 0:9b334a45a8ff 257 void serial_baud(serial_t *obj, int baudrate) {
bogdanm 0:9b334a45a8ff 258 obj->baudrate = baudrate;
bogdanm 0:9b334a45a8ff 259 init_uart(obj);
bogdanm 0:9b334a45a8ff 260 }
bogdanm 0:9b334a45a8ff 261
bogdanm 0:9b334a45a8ff 262 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
bogdanm 0:9b334a45a8ff 263 if (data_bits == 9) {
bogdanm 0:9b334a45a8ff 264 obj->databits = UART_WORDLENGTH_9B;
bogdanm 0:9b334a45a8ff 265 } else {
bogdanm 0:9b334a45a8ff 266 obj->databits = UART_WORDLENGTH_8B;
bogdanm 0:9b334a45a8ff 267 }
bogdanm 0:9b334a45a8ff 268
bogdanm 0:9b334a45a8ff 269 switch (parity) {
bogdanm 0:9b334a45a8ff 270 case ParityOdd:
bogdanm 0:9b334a45a8ff 271 case ParityForced0:
bogdanm 0:9b334a45a8ff 272 obj->parity = UART_PARITY_ODD;
bogdanm 0:9b334a45a8ff 273 break;
bogdanm 0:9b334a45a8ff 274 case ParityEven:
bogdanm 0:9b334a45a8ff 275 case ParityForced1:
bogdanm 0:9b334a45a8ff 276 obj->parity = UART_PARITY_EVEN;
bogdanm 0:9b334a45a8ff 277 break;
bogdanm 0:9b334a45a8ff 278 default: // ParityNone
bogdanm 0:9b334a45a8ff 279 obj->parity = UART_PARITY_NONE;
bogdanm 0:9b334a45a8ff 280 break;
bogdanm 0:9b334a45a8ff 281 }
bogdanm 0:9b334a45a8ff 282
bogdanm 0:9b334a45a8ff 283 if (stop_bits == 2) {
bogdanm 0:9b334a45a8ff 284 obj->stopbits = UART_STOPBITS_2;
bogdanm 0:9b334a45a8ff 285 } else {
bogdanm 0:9b334a45a8ff 286 obj->stopbits = UART_STOPBITS_1;
bogdanm 0:9b334a45a8ff 287 }
bogdanm 0:9b334a45a8ff 288
bogdanm 0:9b334a45a8ff 289 init_uart(obj);
bogdanm 0:9b334a45a8ff 290 }
bogdanm 0:9b334a45a8ff 291
bogdanm 0:9b334a45a8ff 292 /******************************************************************************
bogdanm 0:9b334a45a8ff 293 * INTERRUPTS HANDLING
bogdanm 0:9b334a45a8ff 294 ******************************************************************************/
bogdanm 0:9b334a45a8ff 295
bogdanm 0:9b334a45a8ff 296 static void uart_irq(UARTName name, int id) {
bogdanm 0:9b334a45a8ff 297 UartHandle.Instance = (USART_TypeDef *)name;
bogdanm 0:9b334a45a8ff 298 if (serial_irq_ids[id] != 0) {
bogdanm 0:9b334a45a8ff 299 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
bogdanm 0:9b334a45a8ff 300 irq_handler(serial_irq_ids[id], TxIrq);
bogdanm 0:9b334a45a8ff 301 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TC);
bogdanm 0:9b334a45a8ff 302 }
bogdanm 0:9b334a45a8ff 303 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
bogdanm 0:9b334a45a8ff 304 irq_handler(serial_irq_ids[id], RxIrq);
bogdanm 0:9b334a45a8ff 305 volatile uint32_t tmpval = UartHandle.Instance->RDR; // Clear RXNE bit
bogdanm 0:9b334a45a8ff 306 }
bogdanm 0:9b334a45a8ff 307 }
bogdanm 0:9b334a45a8ff 308 }
bogdanm 0:9b334a45a8ff 309
bogdanm 0:9b334a45a8ff 310 static void uart1_irq(void) {
bogdanm 0:9b334a45a8ff 311 uart_irq(UART_1, 0);
bogdanm 0:9b334a45a8ff 312 }
bogdanm 0:9b334a45a8ff 313
bogdanm 0:9b334a45a8ff 314 #if defined(USART2_BASE)
bogdanm 0:9b334a45a8ff 315 static void uart2_irq(void) {
bogdanm 0:9b334a45a8ff 316 uart_irq(UART_2, 1);
bogdanm 0:9b334a45a8ff 317 }
bogdanm 0:9b334a45a8ff 318 #endif
bogdanm 0:9b334a45a8ff 319
bogdanm 0:9b334a45a8ff 320 #if defined USART3_BASE
bogdanm 0:9b334a45a8ff 321 static void uart3_irq(void) {
bogdanm 0:9b334a45a8ff 322 uart_irq(UART_3, 2);
bogdanm 0:9b334a45a8ff 323 }
bogdanm 0:9b334a45a8ff 324 #endif
bogdanm 0:9b334a45a8ff 325
bogdanm 0:9b334a45a8ff 326 #if defined USART4_BASE
bogdanm 0:9b334a45a8ff 327 static void uart4_irq(void) {
bogdanm 0:9b334a45a8ff 328 uart_irq(UART_4, 3);
bogdanm 0:9b334a45a8ff 329 }
bogdanm 0:9b334a45a8ff 330 #endif
bogdanm 0:9b334a45a8ff 331
bogdanm 0:9b334a45a8ff 332 #if defined USART5_BASE
bogdanm 0:9b334a45a8ff 333 static void uart5_irq(void) {
bogdanm 0:9b334a45a8ff 334 uart_irq(UART_5, 4);
bogdanm 0:9b334a45a8ff 335 }
bogdanm 0:9b334a45a8ff 336 #endif
bogdanm 0:9b334a45a8ff 337
bogdanm 0:9b334a45a8ff 338 #if defined USART6_BASE
bogdanm 0:9b334a45a8ff 339 static void uart6_irq(void) {
bogdanm 0:9b334a45a8ff 340 uart_irq(UART_6, 5);
bogdanm 0:9b334a45a8ff 341 }
bogdanm 0:9b334a45a8ff 342 #endif
bogdanm 0:9b334a45a8ff 343
bogdanm 0:9b334a45a8ff 344 #if defined USART7_BASE
bogdanm 0:9b334a45a8ff 345 static void uart7_irq(void) {
bogdanm 0:9b334a45a8ff 346 uart_irq(UART_7, 6);
bogdanm 0:9b334a45a8ff 347 }
bogdanm 0:9b334a45a8ff 348 #endif
bogdanm 0:9b334a45a8ff 349
bogdanm 0:9b334a45a8ff 350 #if defined USART8_BASE
bogdanm 0:9b334a45a8ff 351 static void uart8_irq(void) {
bogdanm 0:9b334a45a8ff 352 uart_irq(UART_8, 7);
bogdanm 0:9b334a45a8ff 353 }
bogdanm 0:9b334a45a8ff 354 #endif
bogdanm 0:9b334a45a8ff 355
bogdanm 0:9b334a45a8ff 356 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
bogdanm 0:9b334a45a8ff 357 irq_handler = handler;
bogdanm 0:9b334a45a8ff 358 serial_irq_ids[obj->index] = id;
bogdanm 0:9b334a45a8ff 359 }
bogdanm 0:9b334a45a8ff 360
bogdanm 0:9b334a45a8ff 361 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
bogdanm 0:9b334a45a8ff 362 IRQn_Type irq_n = (IRQn_Type)0;
bogdanm 0:9b334a45a8ff 363 uint32_t vector = 0;
bogdanm 0:9b334a45a8ff 364
bogdanm 0:9b334a45a8ff 365 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 366
bogdanm 0:9b334a45a8ff 367 if (obj->uart == UART_1) {
bogdanm 0:9b334a45a8ff 368 irq_n = USART1_IRQn;
bogdanm 0:9b334a45a8ff 369 vector = (uint32_t)&uart1_irq;
bogdanm 0:9b334a45a8ff 370 }
bogdanm 0:9b334a45a8ff 371
bogdanm 0:9b334a45a8ff 372 #if defined(USART2_BASE)
bogdanm 0:9b334a45a8ff 373 if (obj->uart == UART_2) {
bogdanm 0:9b334a45a8ff 374 irq_n = USART2_IRQn;
bogdanm 0:9b334a45a8ff 375 vector = (uint32_t)&uart2_irq;
bogdanm 0:9b334a45a8ff 376 }
bogdanm 0:9b334a45a8ff 377 #endif
bogdanm 0:9b334a45a8ff 378
bogdanm 0:9b334a45a8ff 379 #if defined (TARGET_STM32F091RC)
bogdanm 0:9b334a45a8ff 380 if (obj->uart == UART_3) {
bogdanm 0:9b334a45a8ff 381 irq_n = USART3_8_IRQn;
bogdanm 0:9b334a45a8ff 382 vector = (uint32_t)&uart3_irq;
bogdanm 0:9b334a45a8ff 383 }
bogdanm 0:9b334a45a8ff 384
bogdanm 0:9b334a45a8ff 385 if (obj->uart == UART_4) {
bogdanm 0:9b334a45a8ff 386 irq_n = USART3_8_IRQn;
bogdanm 0:9b334a45a8ff 387 vector = (uint32_t)&uart4_irq;
bogdanm 0:9b334a45a8ff 388 }
bogdanm 0:9b334a45a8ff 389
bogdanm 0:9b334a45a8ff 390 if (obj->uart == UART_5) {
bogdanm 0:9b334a45a8ff 391 irq_n = USART3_8_IRQn;
bogdanm 0:9b334a45a8ff 392 vector = (uint32_t)&uart5_irq;
bogdanm 0:9b334a45a8ff 393 }
bogdanm 0:9b334a45a8ff 394
bogdanm 0:9b334a45a8ff 395 if (obj->uart == UART_6) {
bogdanm 0:9b334a45a8ff 396 irq_n = USART3_8_IRQn;
bogdanm 0:9b334a45a8ff 397 vector = (uint32_t)&uart6_irq;
bogdanm 0:9b334a45a8ff 398 }
bogdanm 0:9b334a45a8ff 399
bogdanm 0:9b334a45a8ff 400 if (obj->uart == UART_7) {
bogdanm 0:9b334a45a8ff 401 irq_n = USART3_8_IRQn;
bogdanm 0:9b334a45a8ff 402 vector = (uint32_t)&uart7_irq;
bogdanm 0:9b334a45a8ff 403 }
bogdanm 0:9b334a45a8ff 404
bogdanm 0:9b334a45a8ff 405 if (obj->uart == UART_8) {
bogdanm 0:9b334a45a8ff 406 irq_n = USART3_8_IRQn;
bogdanm 0:9b334a45a8ff 407 vector = (uint32_t)&uart8_irq;
bogdanm 0:9b334a45a8ff 408 }
bogdanm 0:9b334a45a8ff 409
bogdanm 0:9b334a45a8ff 410 #elif defined (TARGET_STM32F030R8) || defined (TARGET_STM32F051R8)
bogdanm 0:9b334a45a8ff 411
bogdanm 0:9b334a45a8ff 412 #else
bogdanm 0:9b334a45a8ff 413 #if defined(USART3_BASE)
bogdanm 0:9b334a45a8ff 414 if (obj->uart == UART_3) {
bogdanm 0:9b334a45a8ff 415 irq_n = USART3_4_IRQn;
bogdanm 0:9b334a45a8ff 416 vector = (uint32_t)&uart3_irq;
bogdanm 0:9b334a45a8ff 417 }
bogdanm 0:9b334a45a8ff 418 #endif
bogdanm 0:9b334a45a8ff 419
bogdanm 0:9b334a45a8ff 420 #if defined(USART4_BASE)
bogdanm 0:9b334a45a8ff 421 if (obj->uart == UART_4) {
bogdanm 0:9b334a45a8ff 422 irq_n = USART3_4_IRQn;
bogdanm 0:9b334a45a8ff 423 vector = (uint32_t)&uart4_irq;
bogdanm 0:9b334a45a8ff 424 }
bogdanm 0:9b334a45a8ff 425 #endif
bogdanm 0:9b334a45a8ff 426 #endif
bogdanm 0:9b334a45a8ff 427
bogdanm 0:9b334a45a8ff 428 if (enable) {
bogdanm 0:9b334a45a8ff 429
bogdanm 0:9b334a45a8ff 430 if (irq == RxIrq) {
bogdanm 0:9b334a45a8ff 431 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
bogdanm 0:9b334a45a8ff 432 } else { // TxIrq
bogdanm 0:9b334a45a8ff 433 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
bogdanm 0:9b334a45a8ff 434 }
bogdanm 0:9b334a45a8ff 435
bogdanm 0:9b334a45a8ff 436 NVIC_SetVector(irq_n, vector);
bogdanm 0:9b334a45a8ff 437 NVIC_EnableIRQ(irq_n);
bogdanm 0:9b334a45a8ff 438
bogdanm 0:9b334a45a8ff 439 } else { // disable
bogdanm 0:9b334a45a8ff 440
bogdanm 0:9b334a45a8ff 441 int all_disabled = 0;
bogdanm 0:9b334a45a8ff 442
bogdanm 0:9b334a45a8ff 443 if (irq == RxIrq) {
bogdanm 0:9b334a45a8ff 444 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
bogdanm 0:9b334a45a8ff 445 // Check if TxIrq is disabled too
bogdanm 0:9b334a45a8ff 446 if ((UartHandle.Instance->CR1 & USART_CR1_TCIE) == 0) all_disabled = 1;
bogdanm 0:9b334a45a8ff 447 } else { // TxIrq
bogdanm 0:9b334a45a8ff 448 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TC);
bogdanm 0:9b334a45a8ff 449 // Check if RxIrq is disabled too
bogdanm 0:9b334a45a8ff 450 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
bogdanm 0:9b334a45a8ff 451 }
bogdanm 0:9b334a45a8ff 452
bogdanm 0:9b334a45a8ff 453 if (all_disabled) NVIC_DisableIRQ(irq_n);
bogdanm 0:9b334a45a8ff 454
bogdanm 0:9b334a45a8ff 455 }
bogdanm 0:9b334a45a8ff 456 }
bogdanm 0:9b334a45a8ff 457
bogdanm 0:9b334a45a8ff 458 /******************************************************************************
bogdanm 0:9b334a45a8ff 459 * READ/WRITE
bogdanm 0:9b334a45a8ff 460 ******************************************************************************/
bogdanm 0:9b334a45a8ff 461
bogdanm 0:9b334a45a8ff 462 int serial_getc(serial_t *obj) {
bogdanm 0:9b334a45a8ff 463 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 464 while (!serial_readable(obj));
bogdanm 0:9b334a45a8ff 465 return (int)(uart->RDR & (uint16_t)0xFF);
bogdanm 0:9b334a45a8ff 466 }
bogdanm 0:9b334a45a8ff 467
bogdanm 0:9b334a45a8ff 468 void serial_putc(serial_t *obj, int c) {
bogdanm 0:9b334a45a8ff 469 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 470 while (!serial_writable(obj));
bogdanm 0:9b334a45a8ff 471 uart->TDR = (uint32_t)(c & (uint16_t)0xFF);
bogdanm 0:9b334a45a8ff 472 }
bogdanm 0:9b334a45a8ff 473
bogdanm 0:9b334a45a8ff 474 int serial_readable(serial_t *obj) {
bogdanm 0:9b334a45a8ff 475 int status;
bogdanm 0:9b334a45a8ff 476 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 477 // Check if data is received
bogdanm 0:9b334a45a8ff 478 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
bogdanm 0:9b334a45a8ff 479 return status;
bogdanm 0:9b334a45a8ff 480 }
bogdanm 0:9b334a45a8ff 481
bogdanm 0:9b334a45a8ff 482 int serial_writable(serial_t *obj) {
bogdanm 0:9b334a45a8ff 483 int status;
bogdanm 0:9b334a45a8ff 484 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 485 // Check if data is transmitted
bogdanm 0:9b334a45a8ff 486 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
bogdanm 0:9b334a45a8ff 487 return status;
bogdanm 0:9b334a45a8ff 488 }
bogdanm 0:9b334a45a8ff 489
bogdanm 0:9b334a45a8ff 490 void serial_clear(serial_t *obj) {
bogdanm 0:9b334a45a8ff 491 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 492 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TC);
bogdanm 0:9b334a45a8ff 493 __HAL_UART_SEND_REQ(&UartHandle, UART_RXDATA_FLUSH_REQUEST);
bogdanm 0:9b334a45a8ff 494 }
bogdanm 0:9b334a45a8ff 495
bogdanm 0:9b334a45a8ff 496 void serial_pinout_tx(PinName tx) {
bogdanm 0:9b334a45a8ff 497 pinmap_pinout(tx, PinMap_UART_TX);
bogdanm 0:9b334a45a8ff 498 }
bogdanm 0:9b334a45a8ff 499
bogdanm 0:9b334a45a8ff 500 void serial_break_set(serial_t *obj) {
bogdanm 0:9b334a45a8ff 501 // [TODO]
bogdanm 0:9b334a45a8ff 502 }
bogdanm 0:9b334a45a8ff 503
bogdanm 0:9b334a45a8ff 504 void serial_break_clear(serial_t *obj) {
bogdanm 0:9b334a45a8ff 505 // [TODO]
bogdanm 0:9b334a45a8ff 506 }
bogdanm 0:9b334a45a8ff 507
bogdanm 0:9b334a45a8ff 508 #endif