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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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_NUCLEO_F072RB/serial_api.c@293:2a9cf2ed1474, 2014-08-21 (annotated)

Committer:
mbed_official
Date:
Thu Aug 21 10:45:06 2014 +0100
Revision:
293:2a9cf2ed1474
Parent:
242:7074e42da0b2
Child:
339:40bd4701f3e2
Synchronized with git revision 0f8a06d8186efc5ba0f63d93600e113de217fb45



Full URL: https://github.com/mbedmicro/mbed/commit/0f8a06d8186efc5ba0f63d93600e113de217fb45/



[NUCLEOs] Improvement of Serial hal

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 219:993c9b0acbcc 1 /* mbed Microcontroller Library
mbed_official 219:993c9b0acbcc 2 *******************************************************************************
mbed_official 219:993c9b0acbcc 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 219:993c9b0acbcc 4 * All rights reserved.
mbed_official 219:993c9b0acbcc 5 *
mbed_official 219:993c9b0acbcc 6 * Redistribution and use in source and binary forms, with or without
mbed_official 219:993c9b0acbcc 7 * modification, are permitted provided that the following conditions are met:
mbed_official 219:993c9b0acbcc 8 *
mbed_official 219:993c9b0acbcc 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 219:993c9b0acbcc 10 * this list of conditions and the following disclaimer.
mbed_official 219:993c9b0acbcc 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 219:993c9b0acbcc 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 219:993c9b0acbcc 13 * and/or other materials provided with the distribution.
mbed_official 219:993c9b0acbcc 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 219:993c9b0acbcc 15 * may be used to endorse or promote products derived from this software
mbed_official 219:993c9b0acbcc 16 * without specific prior written permission.
mbed_official 219:993c9b0acbcc 17 *
mbed_official 219:993c9b0acbcc 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 219:993c9b0acbcc 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 219:993c9b0acbcc 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 219:993c9b0acbcc 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 219:993c9b0acbcc 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 219:993c9b0acbcc 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 219:993c9b0acbcc 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 219:993c9b0acbcc 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 219:993c9b0acbcc 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 219:993c9b0acbcc 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 219:993c9b0acbcc 28 *******************************************************************************
mbed_official 219:993c9b0acbcc 29 */
mbed_official 239:8cadf13dff33 30 #include "mbed_assert.h"
mbed_official 219:993c9b0acbcc 31 #include "serial_api.h"
mbed_official 219:993c9b0acbcc 32
mbed_official 219:993c9b0acbcc 33 #if DEVICE_SERIAL
mbed_official 219:993c9b0acbcc 34
mbed_official 219:993c9b0acbcc 35 #include "cmsis.h"
mbed_official 219:993c9b0acbcc 36 #include "pinmap.h"
mbed_official 219:993c9b0acbcc 37 #include <string.h>
mbed_official 219:993c9b0acbcc 38
mbed_official 219:993c9b0acbcc 39 static const PinMap PinMap_UART_TX[] = {
mbed_official 219:993c9b0acbcc 40 {PA_0, UART_4, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART4)},
mbed_official 219:993c9b0acbcc 41 {PA_2, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
mbed_official 219:993c9b0acbcc 42 {PA_9, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
mbed_official 219:993c9b0acbcc 43 {PA_14, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)}, // Warning: SWCLK is also on this pin
mbed_official 219:993c9b0acbcc 44 {PB_6, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART1)},
mbed_official 219:993c9b0acbcc 45 {PB_10, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)},
mbed_official 219:993c9b0acbcc 46 {PC_4, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART3)},
mbed_official 219:993c9b0acbcc 47 {PC_10, UART_4, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART4)},
mbed_official 219:993c9b0acbcc 48 // {PC_10, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART3)},
mbed_official 219:993c9b0acbcc 49 {NC, NC, 0}
mbed_official 219:993c9b0acbcc 50 };
mbed_official 219:993c9b0acbcc 51
mbed_official 219:993c9b0acbcc 52 static const PinMap PinMap_UART_RX[] = {
mbed_official 219:993c9b0acbcc 53 {PA_1, UART_4, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART4)},
mbed_official 219:993c9b0acbcc 54 {PA_3, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
mbed_official 219:993c9b0acbcc 55 {PA_10, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART1)},
mbed_official 219:993c9b0acbcc 56 {PA_15, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART2)},
mbed_official 219:993c9b0acbcc 57 {PB_7, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART1)},
mbed_official 219:993c9b0acbcc 58 {PB_11, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART3)},
mbed_official 219:993c9b0acbcc 59 {PC_5, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART3)},
mbed_official 219:993c9b0acbcc 60 {PC_11, UART_4, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART4)},
mbed_official 219:993c9b0acbcc 61 // {PC_11, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF1_USART3)},
mbed_official 219:993c9b0acbcc 62 {NC, NC, 0}
mbed_official 219:993c9b0acbcc 63 };
mbed_official 219:993c9b0acbcc 64
mbed_official 219:993c9b0acbcc 65 #define UART_NUM (4)
mbed_official 219:993c9b0acbcc 66
mbed_official 219:993c9b0acbcc 67 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0, 0};
mbed_official 219:993c9b0acbcc 68
mbed_official 219:993c9b0acbcc 69 static uart_irq_handler irq_handler;
mbed_official 219:993c9b0acbcc 70
mbed_official 219:993c9b0acbcc 71 UART_HandleTypeDef UartHandle;
mbed_official 219:993c9b0acbcc 72
mbed_official 219:993c9b0acbcc 73 int stdio_uart_inited = 0;
mbed_official 219:993c9b0acbcc 74 serial_t stdio_uart;
mbed_official 219:993c9b0acbcc 75
mbed_official 219:993c9b0acbcc 76 static void init_uart(serial_t *obj) {
mbed_official 219:993c9b0acbcc 77 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 219:993c9b0acbcc 78
mbed_official 219:993c9b0acbcc 79 UartHandle.Init.BaudRate = obj->baudrate;
mbed_official 219:993c9b0acbcc 80 UartHandle.Init.WordLength = obj->databits;
mbed_official 219:993c9b0acbcc 81 UartHandle.Init.StopBits = obj->stopbits;
mbed_official 219:993c9b0acbcc 82 UartHandle.Init.Parity = obj->parity;
mbed_official 219:993c9b0acbcc 83 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
mbed_official 219:993c9b0acbcc 84
mbed_official 219:993c9b0acbcc 85 if (obj->pin_rx == NC) {
mbed_official 219:993c9b0acbcc 86 UartHandle.Init.Mode = UART_MODE_TX;
mbed_official 219:993c9b0acbcc 87 } else if (obj->pin_tx == NC) {
mbed_official 219:993c9b0acbcc 88 UartHandle.Init.Mode = UART_MODE_RX;
mbed_official 219:993c9b0acbcc 89 } else {
mbed_official 219:993c9b0acbcc 90 UartHandle.Init.Mode = UART_MODE_TX_RX;
mbed_official 219:993c9b0acbcc 91 }
mbed_official 219:993c9b0acbcc 92
mbed_official 293:2a9cf2ed1474 93 // Disable the reception overrun detection
mbed_official 293:2a9cf2ed1474 94 UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_RXOVERRUNDISABLE_INIT;
mbed_official 293:2a9cf2ed1474 95 UartHandle.AdvancedInit.OverrunDisable = UART_ADVFEATURE_OVERRUN_DISABLE;
mbed_official 293:2a9cf2ed1474 96
mbed_official 219:993c9b0acbcc 97 HAL_UART_Init(&UartHandle);
mbed_official 219:993c9b0acbcc 98 }
mbed_official 219:993c9b0acbcc 99
mbed_official 219:993c9b0acbcc 100 void serial_init(serial_t *obj, PinName tx, PinName rx) {
mbed_official 219:993c9b0acbcc 101 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 219:993c9b0acbcc 102 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 219:993c9b0acbcc 103 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 219:993c9b0acbcc 104
mbed_official 219:993c9b0acbcc 105 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 219:993c9b0acbcc 106 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 239:8cadf13dff33 107 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 219:993c9b0acbcc 108
mbed_official 219:993c9b0acbcc 109 // Enable USART clock
mbed_official 219:993c9b0acbcc 110 if (obj->uart == UART_1) {
mbed_official 219:993c9b0acbcc 111 __USART1_CLK_ENABLE();
mbed_official 219:993c9b0acbcc 112 obj->index = 0;
mbed_official 219:993c9b0acbcc 113 }
mbed_official 219:993c9b0acbcc 114 if (obj->uart == UART_2) {
mbed_official 219:993c9b0acbcc 115 __USART2_CLK_ENABLE();
mbed_official 219:993c9b0acbcc 116 obj->index = 1;
mbed_official 219:993c9b0acbcc 117 }
mbed_official 219:993c9b0acbcc 118
mbed_official 219:993c9b0acbcc 119 if (obj->uart == UART_3) {
mbed_official 219:993c9b0acbcc 120 __USART3_CLK_ENABLE();
mbed_official 219:993c9b0acbcc 121 obj->index = 2;
mbed_official 219:993c9b0acbcc 122 }
mbed_official 219:993c9b0acbcc 123 if (obj->uart == UART_4) {
mbed_official 219:993c9b0acbcc 124 __USART4_CLK_ENABLE();
mbed_official 219:993c9b0acbcc 125 obj->index = 3;
mbed_official 219:993c9b0acbcc 126 }
mbed_official 219:993c9b0acbcc 127
mbed_official 219:993c9b0acbcc 128 // Configure the UART pins
mbed_official 219:993c9b0acbcc 129 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 219:993c9b0acbcc 130 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 219:993c9b0acbcc 131 pin_mode(tx, PullUp);
mbed_official 219:993c9b0acbcc 132 pin_mode(rx, PullUp);
mbed_official 219:993c9b0acbcc 133
mbed_official 219:993c9b0acbcc 134 // Configure UART
mbed_official 219:993c9b0acbcc 135 obj->baudrate = 9600;
mbed_official 219:993c9b0acbcc 136 obj->databits = UART_WORDLENGTH_8B;
mbed_official 219:993c9b0acbcc 137 obj->stopbits = UART_STOPBITS_1;
mbed_official 219:993c9b0acbcc 138 obj->parity = UART_PARITY_NONE;
mbed_official 219:993c9b0acbcc 139
mbed_official 219:993c9b0acbcc 140 obj->pin_tx = tx;
mbed_official 219:993c9b0acbcc 141 obj->pin_rx = rx;
mbed_official 219:993c9b0acbcc 142
mbed_official 219:993c9b0acbcc 143 init_uart(obj);
mbed_official 219:993c9b0acbcc 144
mbed_official 219:993c9b0acbcc 145 // For stdio management
mbed_official 219:993c9b0acbcc 146 if (obj->uart == STDIO_UART) {
mbed_official 219:993c9b0acbcc 147 stdio_uart_inited = 1;
mbed_official 219:993c9b0acbcc 148 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 219:993c9b0acbcc 149 }
mbed_official 219:993c9b0acbcc 150 }
mbed_official 219:993c9b0acbcc 151
mbed_official 219:993c9b0acbcc 152 void serial_free(serial_t *obj) {
mbed_official 219:993c9b0acbcc 153 // Reset UART and disable clock
mbed_official 219:993c9b0acbcc 154 if (obj->uart == UART_1) {
mbed_official 219:993c9b0acbcc 155 __USART1_FORCE_RESET();
mbed_official 219:993c9b0acbcc 156 __USART1_RELEASE_RESET();
mbed_official 219:993c9b0acbcc 157 __USART1_CLK_DISABLE();
mbed_official 219:993c9b0acbcc 158 }
mbed_official 219:993c9b0acbcc 159 if (obj->uart == UART_2) {
mbed_official 219:993c9b0acbcc 160 __USART2_FORCE_RESET();
mbed_official 219:993c9b0acbcc 161 __USART2_RELEASE_RESET();
mbed_official 219:993c9b0acbcc 162 __USART2_CLK_DISABLE();
mbed_official 219:993c9b0acbcc 163 }
mbed_official 219:993c9b0acbcc 164 if (obj->uart == UART_3) {
mbed_official 219:993c9b0acbcc 165 __USART3_FORCE_RESET();
mbed_official 219:993c9b0acbcc 166 __USART3_RELEASE_RESET();
mbed_official 219:993c9b0acbcc 167 __USART3_CLK_DISABLE();
mbed_official 219:993c9b0acbcc 168 }
mbed_official 219:993c9b0acbcc 169 if (obj->uart == UART_4) {
mbed_official 219:993c9b0acbcc 170 __USART4_FORCE_RESET();
mbed_official 219:993c9b0acbcc 171 __USART4_RELEASE_RESET();
mbed_official 219:993c9b0acbcc 172 __USART4_CLK_DISABLE();
mbed_official 219:993c9b0acbcc 173 }
mbed_official 219:993c9b0acbcc 174
mbed_official 219:993c9b0acbcc 175 // Configure GPIOs
mbed_official 219:993c9b0acbcc 176 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 219:993c9b0acbcc 177 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 219:993c9b0acbcc 178
mbed_official 219:993c9b0acbcc 179 serial_irq_ids[obj->index] = 0;
mbed_official 219:993c9b0acbcc 180 }
mbed_official 219:993c9b0acbcc 181
mbed_official 219:993c9b0acbcc 182 void serial_baud(serial_t *obj, int baudrate) {
mbed_official 219:993c9b0acbcc 183 obj->baudrate = baudrate;
mbed_official 219:993c9b0acbcc 184 init_uart(obj);
mbed_official 219:993c9b0acbcc 185 }
mbed_official 219:993c9b0acbcc 186
mbed_official 219:993c9b0acbcc 187 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
mbed_official 242:7074e42da0b2 188 if (data_bits == 9) {
mbed_official 242:7074e42da0b2 189 obj->databits = UART_WORDLENGTH_9B;
mbed_official 242:7074e42da0b2 190 } else {
mbed_official 219:993c9b0acbcc 191 obj->databits = UART_WORDLENGTH_8B;
mbed_official 219:993c9b0acbcc 192 }
mbed_official 219:993c9b0acbcc 193
mbed_official 219:993c9b0acbcc 194 switch (parity) {
mbed_official 219:993c9b0acbcc 195 case ParityOdd:
mbed_official 219:993c9b0acbcc 196 case ParityForced0:
mbed_official 219:993c9b0acbcc 197 obj->parity = UART_PARITY_ODD;
mbed_official 219:993c9b0acbcc 198 break;
mbed_official 219:993c9b0acbcc 199 case ParityEven:
mbed_official 219:993c9b0acbcc 200 case ParityForced1:
mbed_official 219:993c9b0acbcc 201 obj->parity = UART_PARITY_EVEN;
mbed_official 219:993c9b0acbcc 202 break;
mbed_official 219:993c9b0acbcc 203 default: // ParityNone
mbed_official 219:993c9b0acbcc 204 obj->parity = UART_PARITY_NONE;
mbed_official 219:993c9b0acbcc 205 break;
mbed_official 219:993c9b0acbcc 206 }
mbed_official 219:993c9b0acbcc 207
mbed_official 219:993c9b0acbcc 208 if (stop_bits == 2) {
mbed_official 219:993c9b0acbcc 209 obj->stopbits = UART_STOPBITS_2;
mbed_official 219:993c9b0acbcc 210 } else {
mbed_official 219:993c9b0acbcc 211 obj->stopbits = UART_STOPBITS_1;
mbed_official 219:993c9b0acbcc 212 }
mbed_official 219:993c9b0acbcc 213
mbed_official 219:993c9b0acbcc 214 init_uart(obj);
mbed_official 219:993c9b0acbcc 215 }
mbed_official 219:993c9b0acbcc 216
mbed_official 219:993c9b0acbcc 217 /******************************************************************************
mbed_official 219:993c9b0acbcc 218 * INTERRUPTS HANDLING
mbed_official 219:993c9b0acbcc 219 ******************************************************************************/
mbed_official 219:993c9b0acbcc 220
mbed_official 219:993c9b0acbcc 221 static void uart_irq(UARTName name, int id) {
mbed_official 219:993c9b0acbcc 222 UartHandle.Instance = (USART_TypeDef *)name;
mbed_official 219:993c9b0acbcc 223 if (serial_irq_ids[id] != 0) {
mbed_official 219:993c9b0acbcc 224 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
mbed_official 219:993c9b0acbcc 225 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 219:993c9b0acbcc 226 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TC);
mbed_official 219:993c9b0acbcc 227 }
mbed_official 219:993c9b0acbcc 228 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
mbed_official 219:993c9b0acbcc 229 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 293:2a9cf2ed1474 230 volatile uint32_t tmpval = UartHandle.Instance->RDR; // Clear RXNE bit
mbed_official 219:993c9b0acbcc 231 }
mbed_official 219:993c9b0acbcc 232 }
mbed_official 219:993c9b0acbcc 233 }
mbed_official 219:993c9b0acbcc 234
mbed_official 219:993c9b0acbcc 235 static void uart1_irq(void) {
mbed_official 219:993c9b0acbcc 236 uart_irq(UART_1, 0);
mbed_official 219:993c9b0acbcc 237 }
mbed_official 219:993c9b0acbcc 238
mbed_official 219:993c9b0acbcc 239 static void uart2_irq(void) {
mbed_official 219:993c9b0acbcc 240 uart_irq(UART_2, 1);
mbed_official 219:993c9b0acbcc 241 }
mbed_official 219:993c9b0acbcc 242
mbed_official 219:993c9b0acbcc 243 static void uart3_irq(void) {
mbed_official 219:993c9b0acbcc 244 uart_irq(UART_3, 2);
mbed_official 219:993c9b0acbcc 245 }
mbed_official 219:993c9b0acbcc 246
mbed_official 219:993c9b0acbcc 247 static void uart4_irq(void) {
mbed_official 219:993c9b0acbcc 248 uart_irq(UART_4, 3);
mbed_official 219:993c9b0acbcc 249 }
mbed_official 219:993c9b0acbcc 250
mbed_official 219:993c9b0acbcc 251 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
mbed_official 219:993c9b0acbcc 252 irq_handler = handler;
mbed_official 219:993c9b0acbcc 253 serial_irq_ids[obj->index] = id;
mbed_official 219:993c9b0acbcc 254 }
mbed_official 219:993c9b0acbcc 255
mbed_official 219:993c9b0acbcc 256 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
mbed_official 219:993c9b0acbcc 257 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 219:993c9b0acbcc 258 uint32_t vector = 0;
mbed_official 219:993c9b0acbcc 259
mbed_official 219:993c9b0acbcc 260 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 219:993c9b0acbcc 261
mbed_official 219:993c9b0acbcc 262 if (obj->uart == UART_1) {
mbed_official 219:993c9b0acbcc 263 irq_n = USART1_IRQn;
mbed_official 219:993c9b0acbcc 264 vector = (uint32_t)&uart1_irq;
mbed_official 219:993c9b0acbcc 265 }
mbed_official 219:993c9b0acbcc 266
mbed_official 219:993c9b0acbcc 267 if (obj->uart == UART_2) {
mbed_official 219:993c9b0acbcc 268 irq_n = USART2_IRQn;
mbed_official 219:993c9b0acbcc 269 vector = (uint32_t)&uart2_irq;
mbed_official 219:993c9b0acbcc 270 }
mbed_official 219:993c9b0acbcc 271
mbed_official 219:993c9b0acbcc 272 if (obj->uart == UART_3) {
mbed_official 219:993c9b0acbcc 273 irq_n = USART3_4_IRQn;
mbed_official 219:993c9b0acbcc 274 vector = (uint32_t)&uart3_irq;
mbed_official 219:993c9b0acbcc 275 }
mbed_official 219:993c9b0acbcc 276
mbed_official 219:993c9b0acbcc 277 if (obj->uart == UART_4) {
mbed_official 219:993c9b0acbcc 278 irq_n = USART3_4_IRQn;
mbed_official 219:993c9b0acbcc 279 vector = (uint32_t)&uart4_irq;
mbed_official 219:993c9b0acbcc 280 }
mbed_official 219:993c9b0acbcc 281
mbed_official 219:993c9b0acbcc 282 if (enable) {
mbed_official 219:993c9b0acbcc 283
mbed_official 219:993c9b0acbcc 284 if (irq == RxIrq) {
mbed_official 219:993c9b0acbcc 285 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 219:993c9b0acbcc 286 } else { // TxIrq
mbed_official 219:993c9b0acbcc 287 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 219:993c9b0acbcc 288 }
mbed_official 219:993c9b0acbcc 289
mbed_official 219:993c9b0acbcc 290 NVIC_SetVector(irq_n, vector);
mbed_official 219:993c9b0acbcc 291 NVIC_EnableIRQ(irq_n);
mbed_official 219:993c9b0acbcc 292
mbed_official 219:993c9b0acbcc 293 } else { // disable
mbed_official 219:993c9b0acbcc 294
mbed_official 219:993c9b0acbcc 295 int all_disabled = 0;
mbed_official 219:993c9b0acbcc 296
mbed_official 219:993c9b0acbcc 297 if (irq == RxIrq) {
mbed_official 219:993c9b0acbcc 298 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 219:993c9b0acbcc 299 // Check if TxIrq is disabled too
mbed_official 293:2a9cf2ed1474 300 if ((UartHandle.Instance->CR1 & USART_CR1_TCIE) == 0) all_disabled = 1;
mbed_official 219:993c9b0acbcc 301 } else { // TxIrq
mbed_official 293:2a9cf2ed1474 302 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 219:993c9b0acbcc 303 // Check if RxIrq is disabled too
mbed_official 219:993c9b0acbcc 304 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 219:993c9b0acbcc 305 }
mbed_official 219:993c9b0acbcc 306
mbed_official 219:993c9b0acbcc 307 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 219:993c9b0acbcc 308
mbed_official 219:993c9b0acbcc 309 }
mbed_official 219:993c9b0acbcc 310 }
mbed_official 219:993c9b0acbcc 311
mbed_official 219:993c9b0acbcc 312 /******************************************************************************
mbed_official 219:993c9b0acbcc 313 * READ/WRITE
mbed_official 219:993c9b0acbcc 314 ******************************************************************************/
mbed_official 219:993c9b0acbcc 315
mbed_official 219:993c9b0acbcc 316 int serial_getc(serial_t *obj) {
mbed_official 219:993c9b0acbcc 317 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 219:993c9b0acbcc 318 while (!serial_readable(obj));
mbed_official 219:993c9b0acbcc 319 return (int)(uart->RDR & (uint16_t)0xFF);
mbed_official 219:993c9b0acbcc 320 }
mbed_official 219:993c9b0acbcc 321
mbed_official 219:993c9b0acbcc 322 void serial_putc(serial_t *obj, int c) {
mbed_official 219:993c9b0acbcc 323 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 219:993c9b0acbcc 324 while (!serial_writable(obj));
mbed_official 219:993c9b0acbcc 325 uart->TDR = (uint32_t)(c & (uint16_t)0xFF);
mbed_official 219:993c9b0acbcc 326 }
mbed_official 219:993c9b0acbcc 327
mbed_official 219:993c9b0acbcc 328 int serial_readable(serial_t *obj) {
mbed_official 219:993c9b0acbcc 329 int status;
mbed_official 219:993c9b0acbcc 330 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 219:993c9b0acbcc 331 // Check if data is received
mbed_official 219:993c9b0acbcc 332 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 219:993c9b0acbcc 333 return status;
mbed_official 219:993c9b0acbcc 334 }
mbed_official 219:993c9b0acbcc 335
mbed_official 219:993c9b0acbcc 336 int serial_writable(serial_t *obj) {
mbed_official 219:993c9b0acbcc 337 int status;
mbed_official 219:993c9b0acbcc 338 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 219:993c9b0acbcc 339 // Check if data is transmitted
mbed_official 219:993c9b0acbcc 340 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 219:993c9b0acbcc 341 return status;
mbed_official 219:993c9b0acbcc 342 }
mbed_official 219:993c9b0acbcc 343
mbed_official 219:993c9b0acbcc 344 void serial_clear(serial_t *obj) {
mbed_official 219:993c9b0acbcc 345 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 293:2a9cf2ed1474 346 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TC);
mbed_official 293:2a9cf2ed1474 347 __HAL_UART_SEND_REQ(&UartHandle, UART_RXDATA_FLUSH_REQUEST);
mbed_official 219:993c9b0acbcc 348 }
mbed_official 219:993c9b0acbcc 349
mbed_official 219:993c9b0acbcc 350 void serial_pinout_tx(PinName tx) {
mbed_official 219:993c9b0acbcc 351 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 219:993c9b0acbcc 352 }
mbed_official 219:993c9b0acbcc 353
mbed_official 219:993c9b0acbcc 354 void serial_break_set(serial_t *obj) {
mbed_official 219:993c9b0acbcc 355 // [TODO]
mbed_official 219:993c9b0acbcc 356 }
mbed_official 219:993c9b0acbcc 357
mbed_official 219:993c9b0acbcc 358 void serial_break_clear(serial_t *obj) {
mbed_official 219:993c9b0acbcc 359 // [TODO]
mbed_official 219:993c9b0acbcc 360 }
mbed_official 219:993c9b0acbcc 361
mbed_official 219:993c9b0acbcc 362 #endif