shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/serial_api.c@219:993c9b0acbcc, 2014-06-02 (annotated)

Committer:
mbed_official
Date:
Mon Jun 02 09:45:07 2014 +0100
Revision:
219:993c9b0acbcc
Child:
239:8cadf13dff33
Synchronized with git revision cd741909614c52b886d34bad5007da2057c1a185



Full URL: https://github.com/mbedmicro/mbed/commit/cd741909614c52b886d34bad5007da2057c1a185/



[NUCLEO_F072RB] Add HAL files

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 219:993c9b0acbcc 30 #include "serial_api.h"
mbed_official 219:993c9b0acbcc 31
mbed_official 219:993c9b0acbcc 32 #if DEVICE_SERIAL
mbed_official 219:993c9b0acbcc 33
mbed_official 219:993c9b0acbcc 34 #include "cmsis.h"
mbed_official 219:993c9b0acbcc 35 #include "pinmap.h"
mbed_official 219:993c9b0acbcc 36 #include "error.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 219:993c9b0acbcc 93 HAL_UART_Init(&UartHandle);
mbed_official 219:993c9b0acbcc 94 }
mbed_official 219:993c9b0acbcc 95
mbed_official 219:993c9b0acbcc 96 void serial_init(serial_t *obj, PinName tx, PinName rx) {
mbed_official 219:993c9b0acbcc 97 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 219:993c9b0acbcc 98 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 219:993c9b0acbcc 99 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 219:993c9b0acbcc 100
mbed_official 219:993c9b0acbcc 101 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 219:993c9b0acbcc 102 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 219:993c9b0acbcc 103
mbed_official 219:993c9b0acbcc 104 if (obj->uart == (UARTName)NC) {
mbed_official 219:993c9b0acbcc 105 error("Serial error: pinout mapping failed.");
mbed_official 219:993c9b0acbcc 106 }
mbed_official 219:993c9b0acbcc 107
mbed_official 219:993c9b0acbcc 108 // Enable USART clock
mbed_official 219:993c9b0acbcc 109 if (obj->uart == UART_1) {
mbed_official 219:993c9b0acbcc 110 __USART1_CLK_ENABLE();
mbed_official 219:993c9b0acbcc 111 obj->index = 0;
mbed_official 219:993c9b0acbcc 112 }
mbed_official 219:993c9b0acbcc 113 if (obj->uart == UART_2) {
mbed_official 219:993c9b0acbcc 114 __USART2_CLK_ENABLE();
mbed_official 219:993c9b0acbcc 115 obj->index = 1;
mbed_official 219:993c9b0acbcc 116 }
mbed_official 219:993c9b0acbcc 117
mbed_official 219:993c9b0acbcc 118 if (obj->uart == UART_3) {
mbed_official 219:993c9b0acbcc 119 __USART3_CLK_ENABLE();
mbed_official 219:993c9b0acbcc 120 obj->index = 2;
mbed_official 219:993c9b0acbcc 121 }
mbed_official 219:993c9b0acbcc 122 if (obj->uart == UART_4) {
mbed_official 219:993c9b0acbcc 123 __USART4_CLK_ENABLE();
mbed_official 219:993c9b0acbcc 124 obj->index = 3;
mbed_official 219:993c9b0acbcc 125 }
mbed_official 219:993c9b0acbcc 126
mbed_official 219:993c9b0acbcc 127 // Configure the UART pins
mbed_official 219:993c9b0acbcc 128 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 219:993c9b0acbcc 129 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 219:993c9b0acbcc 130 pin_mode(tx, PullUp);
mbed_official 219:993c9b0acbcc 131 pin_mode(rx, PullUp);
mbed_official 219:993c9b0acbcc 132
mbed_official 219:993c9b0acbcc 133 // Configure UART
mbed_official 219:993c9b0acbcc 134 obj->baudrate = 9600;
mbed_official 219:993c9b0acbcc 135 obj->databits = UART_WORDLENGTH_8B;
mbed_official 219:993c9b0acbcc 136 obj->stopbits = UART_STOPBITS_1;
mbed_official 219:993c9b0acbcc 137 obj->parity = UART_PARITY_NONE;
mbed_official 219:993c9b0acbcc 138
mbed_official 219:993c9b0acbcc 139 obj->pin_tx = tx;
mbed_official 219:993c9b0acbcc 140 obj->pin_rx = rx;
mbed_official 219:993c9b0acbcc 141
mbed_official 219:993c9b0acbcc 142 init_uart(obj);
mbed_official 219:993c9b0acbcc 143
mbed_official 219:993c9b0acbcc 144 // For stdio management
mbed_official 219:993c9b0acbcc 145 if (obj->uart == STDIO_UART) {
mbed_official 219:993c9b0acbcc 146 stdio_uart_inited = 1;
mbed_official 219:993c9b0acbcc 147 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 219:993c9b0acbcc 148 }
mbed_official 219:993c9b0acbcc 149 }
mbed_official 219:993c9b0acbcc 150
mbed_official 219:993c9b0acbcc 151 void serial_free(serial_t *obj) {
mbed_official 219:993c9b0acbcc 152 // Reset UART and disable clock
mbed_official 219:993c9b0acbcc 153 if (obj->uart == UART_1) {
mbed_official 219:993c9b0acbcc 154 __USART1_FORCE_RESET();
mbed_official 219:993c9b0acbcc 155 __USART1_RELEASE_RESET();
mbed_official 219:993c9b0acbcc 156 __USART1_CLK_DISABLE();
mbed_official 219:993c9b0acbcc 157 }
mbed_official 219:993c9b0acbcc 158 if (obj->uart == UART_2) {
mbed_official 219:993c9b0acbcc 159 __USART2_FORCE_RESET();
mbed_official 219:993c9b0acbcc 160 __USART2_RELEASE_RESET();
mbed_official 219:993c9b0acbcc 161 __USART2_CLK_DISABLE();
mbed_official 219:993c9b0acbcc 162 }
mbed_official 219:993c9b0acbcc 163 if (obj->uart == UART_3) {
mbed_official 219:993c9b0acbcc 164 __USART3_FORCE_RESET();
mbed_official 219:993c9b0acbcc 165 __USART3_RELEASE_RESET();
mbed_official 219:993c9b0acbcc 166 __USART3_CLK_DISABLE();
mbed_official 219:993c9b0acbcc 167 }
mbed_official 219:993c9b0acbcc 168 if (obj->uart == UART_4) {
mbed_official 219:993c9b0acbcc 169 __USART4_FORCE_RESET();
mbed_official 219:993c9b0acbcc 170 __USART4_RELEASE_RESET();
mbed_official 219:993c9b0acbcc 171 __USART4_CLK_DISABLE();
mbed_official 219:993c9b0acbcc 172 }
mbed_official 219:993c9b0acbcc 173
mbed_official 219:993c9b0acbcc 174 // Configure GPIOs
mbed_official 219:993c9b0acbcc 175 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 219:993c9b0acbcc 176 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 219:993c9b0acbcc 177
mbed_official 219:993c9b0acbcc 178 serial_irq_ids[obj->index] = 0;
mbed_official 219:993c9b0acbcc 179 }
mbed_official 219:993c9b0acbcc 180
mbed_official 219:993c9b0acbcc 181 void serial_baud(serial_t *obj, int baudrate) {
mbed_official 219:993c9b0acbcc 182 obj->baudrate = baudrate;
mbed_official 219:993c9b0acbcc 183 init_uart(obj);
mbed_official 219:993c9b0acbcc 184 }
mbed_official 219:993c9b0acbcc 185
mbed_official 219:993c9b0acbcc 186 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
mbed_official 219:993c9b0acbcc 187 if (data_bits == 8) {
mbed_official 219:993c9b0acbcc 188 obj->databits = UART_WORDLENGTH_8B;
mbed_official 219:993c9b0acbcc 189 } else {
mbed_official 219:993c9b0acbcc 190 obj->databits = UART_WORDLENGTH_9B;
mbed_official 219:993c9b0acbcc 191 }
mbed_official 219:993c9b0acbcc 192
mbed_official 219:993c9b0acbcc 193 switch (parity) {
mbed_official 219:993c9b0acbcc 194 case ParityOdd:
mbed_official 219:993c9b0acbcc 195 case ParityForced0:
mbed_official 219:993c9b0acbcc 196 obj->parity = UART_PARITY_ODD;
mbed_official 219:993c9b0acbcc 197 break;
mbed_official 219:993c9b0acbcc 198 case ParityEven:
mbed_official 219:993c9b0acbcc 199 case ParityForced1:
mbed_official 219:993c9b0acbcc 200 obj->parity = UART_PARITY_EVEN;
mbed_official 219:993c9b0acbcc 201 break;
mbed_official 219:993c9b0acbcc 202 default: // ParityNone
mbed_official 219:993c9b0acbcc 203 obj->parity = UART_PARITY_NONE;
mbed_official 219:993c9b0acbcc 204 break;
mbed_official 219:993c9b0acbcc 205 }
mbed_official 219:993c9b0acbcc 206
mbed_official 219:993c9b0acbcc 207 if (stop_bits == 2) {
mbed_official 219:993c9b0acbcc 208 obj->stopbits = UART_STOPBITS_2;
mbed_official 219:993c9b0acbcc 209 } else {
mbed_official 219:993c9b0acbcc 210 obj->stopbits = UART_STOPBITS_1;
mbed_official 219:993c9b0acbcc 211 }
mbed_official 219:993c9b0acbcc 212
mbed_official 219:993c9b0acbcc 213 init_uart(obj);
mbed_official 219:993c9b0acbcc 214 }
mbed_official 219:993c9b0acbcc 215
mbed_official 219:993c9b0acbcc 216 /******************************************************************************
mbed_official 219:993c9b0acbcc 217 * INTERRUPTS HANDLING
mbed_official 219:993c9b0acbcc 218 ******************************************************************************/
mbed_official 219:993c9b0acbcc 219
mbed_official 219:993c9b0acbcc 220 static void uart_irq(UARTName name, int id) {
mbed_official 219:993c9b0acbcc 221 UartHandle.Instance = (USART_TypeDef *)name;
mbed_official 219:993c9b0acbcc 222 if (serial_irq_ids[id] != 0) {
mbed_official 219:993c9b0acbcc 223 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
mbed_official 219:993c9b0acbcc 224 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 219:993c9b0acbcc 225 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TC);
mbed_official 219:993c9b0acbcc 226 }
mbed_official 219:993c9b0acbcc 227 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
mbed_official 219:993c9b0acbcc 228 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 219:993c9b0acbcc 229 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_RXNE);
mbed_official 219:993c9b0acbcc 230 }
mbed_official 219:993c9b0acbcc 231 }
mbed_official 219:993c9b0acbcc 232 }
mbed_official 219:993c9b0acbcc 233
mbed_official 219:993c9b0acbcc 234 static void uart1_irq(void) {
mbed_official 219:993c9b0acbcc 235 uart_irq(UART_1, 0);
mbed_official 219:993c9b0acbcc 236 }
mbed_official 219:993c9b0acbcc 237
mbed_official 219:993c9b0acbcc 238 static void uart2_irq(void) {
mbed_official 219:993c9b0acbcc 239 uart_irq(UART_2, 1);
mbed_official 219:993c9b0acbcc 240 }
mbed_official 219:993c9b0acbcc 241
mbed_official 219:993c9b0acbcc 242 static void uart3_irq(void) {
mbed_official 219:993c9b0acbcc 243 uart_irq(UART_3, 2);
mbed_official 219:993c9b0acbcc 244 }
mbed_official 219:993c9b0acbcc 245
mbed_official 219:993c9b0acbcc 246 static void uart4_irq(void) {
mbed_official 219:993c9b0acbcc 247 uart_irq(UART_4, 3);
mbed_official 219:993c9b0acbcc 248 }
mbed_official 219:993c9b0acbcc 249
mbed_official 219:993c9b0acbcc 250 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
mbed_official 219:993c9b0acbcc 251 irq_handler = handler;
mbed_official 219:993c9b0acbcc 252 serial_irq_ids[obj->index] = id;
mbed_official 219:993c9b0acbcc 253 }
mbed_official 219:993c9b0acbcc 254
mbed_official 219:993c9b0acbcc 255 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
mbed_official 219:993c9b0acbcc 256 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 219:993c9b0acbcc 257 uint32_t vector = 0;
mbed_official 219:993c9b0acbcc 258
mbed_official 219:993c9b0acbcc 259 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 219:993c9b0acbcc 260
mbed_official 219:993c9b0acbcc 261 if (obj->uart == UART_1) {
mbed_official 219:993c9b0acbcc 262 irq_n = USART1_IRQn;
mbed_official 219:993c9b0acbcc 263 vector = (uint32_t)&uart1_irq;
mbed_official 219:993c9b0acbcc 264 }
mbed_official 219:993c9b0acbcc 265
mbed_official 219:993c9b0acbcc 266 if (obj->uart == UART_2) {
mbed_official 219:993c9b0acbcc 267 irq_n = USART2_IRQn;
mbed_official 219:993c9b0acbcc 268 vector = (uint32_t)&uart2_irq;
mbed_official 219:993c9b0acbcc 269 }
mbed_official 219:993c9b0acbcc 270
mbed_official 219:993c9b0acbcc 271 if (obj->uart == UART_3) {
mbed_official 219:993c9b0acbcc 272 irq_n = USART3_4_IRQn;
mbed_official 219:993c9b0acbcc 273 vector = (uint32_t)&uart3_irq;
mbed_official 219:993c9b0acbcc 274 }
mbed_official 219:993c9b0acbcc 275
mbed_official 219:993c9b0acbcc 276 if (obj->uart == UART_4) {
mbed_official 219:993c9b0acbcc 277 irq_n = USART3_4_IRQn;
mbed_official 219:993c9b0acbcc 278 vector = (uint32_t)&uart4_irq;
mbed_official 219:993c9b0acbcc 279 }
mbed_official 219:993c9b0acbcc 280
mbed_official 219:993c9b0acbcc 281 if (enable) {
mbed_official 219:993c9b0acbcc 282
mbed_official 219:993c9b0acbcc 283 if (irq == RxIrq) {
mbed_official 219:993c9b0acbcc 284 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 219:993c9b0acbcc 285 } else { // TxIrq
mbed_official 219:993c9b0acbcc 286 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 219:993c9b0acbcc 287 }
mbed_official 219:993c9b0acbcc 288
mbed_official 219:993c9b0acbcc 289 NVIC_SetVector(irq_n, vector);
mbed_official 219:993c9b0acbcc 290 NVIC_EnableIRQ(irq_n);
mbed_official 219:993c9b0acbcc 291
mbed_official 219:993c9b0acbcc 292 } else { // disable
mbed_official 219:993c9b0acbcc 293
mbed_official 219:993c9b0acbcc 294 int all_disabled = 0;
mbed_official 219:993c9b0acbcc 295
mbed_official 219:993c9b0acbcc 296 if (irq == RxIrq) {
mbed_official 219:993c9b0acbcc 297 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 219:993c9b0acbcc 298 // Check if TxIrq is disabled too
mbed_official 219:993c9b0acbcc 299 if ((UartHandle.Instance->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 219:993c9b0acbcc 300 } else { // TxIrq
mbed_official 219:993c9b0acbcc 301 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TXE);
mbed_official 219:993c9b0acbcc 302 // Check if RxIrq is disabled too
mbed_official 219:993c9b0acbcc 303 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 219:993c9b0acbcc 304 }
mbed_official 219:993c9b0acbcc 305
mbed_official 219:993c9b0acbcc 306 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 219:993c9b0acbcc 307
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 * READ/WRITE
mbed_official 219:993c9b0acbcc 313 ******************************************************************************/
mbed_official 219:993c9b0acbcc 314
mbed_official 219:993c9b0acbcc 315 int serial_getc(serial_t *obj) {
mbed_official 219:993c9b0acbcc 316 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 219:993c9b0acbcc 317 while (!serial_readable(obj));
mbed_official 219:993c9b0acbcc 318 return (int)(uart->RDR & (uint16_t)0xFF);
mbed_official 219:993c9b0acbcc 319 }
mbed_official 219:993c9b0acbcc 320
mbed_official 219:993c9b0acbcc 321 void serial_putc(serial_t *obj, int c) {
mbed_official 219:993c9b0acbcc 322 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 219:993c9b0acbcc 323 while (!serial_writable(obj));
mbed_official 219:993c9b0acbcc 324 uart->TDR = (uint32_t)(c & (uint16_t)0xFF);
mbed_official 219:993c9b0acbcc 325 }
mbed_official 219:993c9b0acbcc 326
mbed_official 219:993c9b0acbcc 327 int serial_readable(serial_t *obj) {
mbed_official 219:993c9b0acbcc 328 int status;
mbed_official 219:993c9b0acbcc 329 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 219:993c9b0acbcc 330 // Check if data is received
mbed_official 219:993c9b0acbcc 331 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 219:993c9b0acbcc 332 return status;
mbed_official 219:993c9b0acbcc 333 }
mbed_official 219:993c9b0acbcc 334
mbed_official 219:993c9b0acbcc 335 int serial_writable(serial_t *obj) {
mbed_official 219:993c9b0acbcc 336 int status;
mbed_official 219:993c9b0acbcc 337 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 219:993c9b0acbcc 338 // Check if data is transmitted
mbed_official 219:993c9b0acbcc 339 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 219:993c9b0acbcc 340 return status;
mbed_official 219:993c9b0acbcc 341 }
mbed_official 219:993c9b0acbcc 342
mbed_official 219:993c9b0acbcc 343 void serial_clear(serial_t *obj) {
mbed_official 219:993c9b0acbcc 344 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 219:993c9b0acbcc 345 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TXE);
mbed_official 219:993c9b0acbcc 346 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_RXNE);
mbed_official 219:993c9b0acbcc 347 }
mbed_official 219:993c9b0acbcc 348
mbed_official 219:993c9b0acbcc 349 void serial_pinout_tx(PinName tx) {
mbed_official 219:993c9b0acbcc 350 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 219:993c9b0acbcc 351 }
mbed_official 219:993c9b0acbcc 352
mbed_official 219:993c9b0acbcc 353 void serial_break_set(serial_t *obj) {
mbed_official 219:993c9b0acbcc 354 // [TODO]
mbed_official 219:993c9b0acbcc 355 }
mbed_official 219:993c9b0acbcc 356
mbed_official 219:993c9b0acbcc 357 void serial_break_clear(serial_t *obj) {
mbed_official 219:993c9b0acbcc 358 // [TODO]
mbed_official 219:993c9b0acbcc 359 }
mbed_official 219:993c9b0acbcc 360
mbed_official 219:993c9b0acbcc 361 #endif