Janek Mann / mbed-src-openwear

mbed library sources modified for open wear

Dependents:   openwear-lifelogger-example

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F072RB/serial_api.c@294:2a9cf2ed1474, 2014-08-21 (annotated)

Committer:
mbed_official
Date:
Thu Aug 21 10:45:06 2014 +0100
Revision:
294:2a9cf2ed1474
Parent:
242:7074e42da0b2 
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 294:2a9cf2ed1474 93 // Disable the reception overrun detection
mbed_official 294:2a9cf2ed1474 94 UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_RXOVERRUNDISABLE_INIT;
mbed_official 294:2a9cf2ed1474 95 UartHandle.AdvancedInit.OverrunDisable = UART_ADVFEATURE_OVERRUN_DISABLE;
mbed_official 294:2a9cf2ed1474 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 294:2a9cf2ed1474 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 294:2a9cf2ed1474 300 if ((UartHandle.Instance->CR1 & USART_CR1_TCIE) == 0) all_disabled = 1;
mbed_official 219:993c9b0acbcc 301 } else { // TxIrq
mbed_official 294:2a9cf2ed1474 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 294:2a9cf2ed1474 346 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TC);
mbed_official 294:2a9cf2ed1474 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