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_F302R8/serial_api.c@242:7074e42da0b2, 2014-06-27 (annotated)

Committer:
mbed_official
Date:
Fri Jun 27 07:30:09 2014 +0100
Revision:
242:7074e42da0b2
Parent:
227:7bd0639b8911 
Synchronized with git revision 124ef5e3add9e74a3221347a3fbeea7c8b3cf353



Full URL: https://github.com/mbedmicro/mbed/commit/124ef5e3add9e74a3221347a3fbeea7c8b3cf353/



[DISCO_F407VG] HAL update.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 125:23cc3068a9e4 1 /* mbed Microcontroller Library
mbed_official 125:23cc3068a9e4 2 *******************************************************************************
mbed_official 125:23cc3068a9e4 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 125:23cc3068a9e4 4 * All rights reserved.
mbed_official 125:23cc3068a9e4 5 *
mbed_official 125:23cc3068a9e4 6 * Redistribution and use in source and binary forms, with or without
mbed_official 125:23cc3068a9e4 7 * modification, are permitted provided that the following conditions are met:
mbed_official 125:23cc3068a9e4 8 *
mbed_official 125:23cc3068a9e4 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 125:23cc3068a9e4 10 * this list of conditions and the following disclaimer.
mbed_official 125:23cc3068a9e4 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 125:23cc3068a9e4 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 125:23cc3068a9e4 13 * and/or other materials provided with the distribution.
mbed_official 125:23cc3068a9e4 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 125:23cc3068a9e4 15 * may be used to endorse or promote products derived from this software
mbed_official 125:23cc3068a9e4 16 * without specific prior written permission.
mbed_official 125:23cc3068a9e4 17 *
mbed_official 125:23cc3068a9e4 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 125:23cc3068a9e4 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 125:23cc3068a9e4 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 125:23cc3068a9e4 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 125:23cc3068a9e4 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 125:23cc3068a9e4 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 125:23cc3068a9e4 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 125:23cc3068a9e4 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 125:23cc3068a9e4 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 125:23cc3068a9e4 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 125:23cc3068a9e4 28 *******************************************************************************
mbed_official 125:23cc3068a9e4 29 */
mbed_official 227:7bd0639b8911 30 #include "mbed_assert.h"
mbed_official 125:23cc3068a9e4 31 #include "serial_api.h"
mbed_official 162:937d965048d3 32
mbed_official 162:937d965048d3 33 #if DEVICE_SERIAL
mbed_official 162:937d965048d3 34
mbed_official 125:23cc3068a9e4 35 #include "cmsis.h"
mbed_official 125:23cc3068a9e4 36 #include "pinmap.h"
mbed_official 125:23cc3068a9e4 37 #include <string.h>
mbed_official 125:23cc3068a9e4 38
mbed_official 125:23cc3068a9e4 39 static const PinMap PinMap_UART_TX[] = {
mbed_official 125:23cc3068a9e4 40 {PA_2, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)},
mbed_official 125:23cc3068a9e4 41 {PA_9, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)},
mbed_official 125:23cc3068a9e4 42 {PA_14, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)},
mbed_official 125:23cc3068a9e4 43 {PB_3, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)},
mbed_official 125:23cc3068a9e4 44 {PB_6, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)},
mbed_official 125:23cc3068a9e4 45 {PB_9, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)},
mbed_official 125:23cc3068a9e4 46 {PB_10, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)},
mbed_official 125:23cc3068a9e4 47 {PC_4, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)},
mbed_official 125:23cc3068a9e4 48 {PC_10, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)},
mbed_official 125:23cc3068a9e4 49 {NC, NC, 0}
mbed_official 125:23cc3068a9e4 50 };
mbed_official 125:23cc3068a9e4 51
mbed_official 125:23cc3068a9e4 52 static const PinMap PinMap_UART_RX[] = {
mbed_official 125:23cc3068a9e4 53 {PA_3, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)},
mbed_official 125:23cc3068a9e4 54 {PA_10, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)},
mbed_official 125:23cc3068a9e4 55 {PA_15, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)},
mbed_official 125:23cc3068a9e4 56 {PB_4, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)},
mbed_official 125:23cc3068a9e4 57 {PB_7, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)},
mbed_official 125:23cc3068a9e4 58 {PB_8, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)},
mbed_official 125:23cc3068a9e4 59 {PB_11, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)},
mbed_official 125:23cc3068a9e4 60 {PC_5, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)},
mbed_official 125:23cc3068a9e4 61 {PC_11, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_7)},
mbed_official 125:23cc3068a9e4 62 {NC, NC, 0}
mbed_official 125:23cc3068a9e4 63 };
mbed_official 125:23cc3068a9e4 64
mbed_official 125:23cc3068a9e4 65 #define UART_NUM (2)
mbed_official 125:23cc3068a9e4 66
mbed_official 125:23cc3068a9e4 67 static uint32_t serial_irq_ids[UART_NUM] = {0};
mbed_official 125:23cc3068a9e4 68
mbed_official 125:23cc3068a9e4 69 static uart_irq_handler irq_handler;
mbed_official 125:23cc3068a9e4 70
mbed_official 125:23cc3068a9e4 71 int stdio_uart_inited = 0;
mbed_official 125:23cc3068a9e4 72 serial_t stdio_uart;
mbed_official 125:23cc3068a9e4 73
mbed_official 125:23cc3068a9e4 74 static void init_usart(serial_t *obj) {
mbed_official 125:23cc3068a9e4 75 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 125:23cc3068a9e4 76 USART_InitTypeDef USART_InitStructure;
mbed_official 135:067cc8ba23da 77
mbed_official 125:23cc3068a9e4 78 USART_Cmd(usart, DISABLE);
mbed_official 125:23cc3068a9e4 79
mbed_official 125:23cc3068a9e4 80 USART_InitStructure.USART_BaudRate = obj->baudrate;
mbed_official 125:23cc3068a9e4 81 USART_InitStructure.USART_WordLength = obj->databits;
mbed_official 125:23cc3068a9e4 82 USART_InitStructure.USART_StopBits = obj->stopbits;
mbed_official 125:23cc3068a9e4 83 USART_InitStructure.USART_Parity = obj->parity;
mbed_official 125:23cc3068a9e4 84 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
mbed_official 242:7074e42da0b2 85
mbed_official 242:7074e42da0b2 86 if (obj->pin_rx == NC) {
mbed_official 242:7074e42da0b2 87 USART_InitStructure.USART_Mode = USART_Mode_Tx;
mbed_official 242:7074e42da0b2 88 } else if (obj->pin_tx == NC) {
mbed_official 242:7074e42da0b2 89 USART_InitStructure.USART_Mode = USART_Mode_Rx;
mbed_official 242:7074e42da0b2 90 } else {
mbed_official 242:7074e42da0b2 91 USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
mbed_official 242:7074e42da0b2 92 }
mbed_official 242:7074e42da0b2 93
mbed_official 125:23cc3068a9e4 94 USART_Init(usart, &USART_InitStructure);
mbed_official 135:067cc8ba23da 95
mbed_official 125:23cc3068a9e4 96 USART_Cmd(usart, ENABLE);
mbed_official 125:23cc3068a9e4 97 }
mbed_official 125:23cc3068a9e4 98
mbed_official 135:067cc8ba23da 99 void serial_init(serial_t *obj, PinName tx, PinName rx) {
mbed_official 125:23cc3068a9e4 100 // Determine the UART to use
mbed_official 125:23cc3068a9e4 101 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 125:23cc3068a9e4 102 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 135:067cc8ba23da 103
mbed_official 125:23cc3068a9e4 104 // Get the peripheral name from the pin and assign it to the object
mbed_official 125:23cc3068a9e4 105 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 227:7bd0639b8911 106 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 125:23cc3068a9e4 107
mbed_official 125:23cc3068a9e4 108 // Enable USART clock
mbed_official 125:23cc3068a9e4 109 if (obj->uart == UART_1) {
mbed_official 135:067cc8ba23da 110 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
mbed_official 216:577900467c9e 111 obj->index = 0;
mbed_official 125:23cc3068a9e4 112 }
mbed_official 125:23cc3068a9e4 113 if (obj->uart == UART_2) {
mbed_official 135:067cc8ba23da 114 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
mbed_official 216:577900467c9e 115 obj->index = 1;
mbed_official 125:23cc3068a9e4 116 }
mbed_official 125:23cc3068a9e4 117 if (obj->uart == UART_3) {
mbed_official 135:067cc8ba23da 118 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
mbed_official 216:577900467c9e 119 obj->index = 2;
mbed_official 125:23cc3068a9e4 120 }
mbed_official 135:067cc8ba23da 121
mbed_official 125:23cc3068a9e4 122 // Configure the UART pins
mbed_official 125:23cc3068a9e4 123 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 125:23cc3068a9e4 124 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 125:23cc3068a9e4 125 pin_mode(tx, PullUp);
mbed_official 125:23cc3068a9e4 126 pin_mode(rx, PullUp);
mbed_official 125:23cc3068a9e4 127
mbed_official 125:23cc3068a9e4 128 // Configure UART
mbed_official 125:23cc3068a9e4 129 obj->baudrate = 9600;
mbed_official 125:23cc3068a9e4 130 obj->databits = USART_WordLength_8b;
mbed_official 125:23cc3068a9e4 131 obj->stopbits = USART_StopBits_1;
mbed_official 135:067cc8ba23da 132 obj->parity = USART_Parity_No;
mbed_official 125:23cc3068a9e4 133
mbed_official 216:577900467c9e 134 obj->pin_tx = tx;
mbed_official 216:577900467c9e 135 obj->pin_rx = rx;
mbed_official 125:23cc3068a9e4 136
mbed_official 216:577900467c9e 137 init_usart(obj);
mbed_official 135:067cc8ba23da 138
mbed_official 125:23cc3068a9e4 139 // For stdio management
mbed_official 125:23cc3068a9e4 140 if (obj->uart == STDIO_UART) {
mbed_official 125:23cc3068a9e4 141 stdio_uart_inited = 1;
mbed_official 125:23cc3068a9e4 142 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 125:23cc3068a9e4 143 }
mbed_official 135:067cc8ba23da 144
mbed_official 125:23cc3068a9e4 145 }
mbed_official 125:23cc3068a9e4 146
mbed_official 125:23cc3068a9e4 147 void serial_free(serial_t *obj) {
mbed_official 216:577900467c9e 148 // Reset UART and disable clock
mbed_official 216:577900467c9e 149 if (obj->uart == UART_1) {
mbed_official 216:577900467c9e 150 RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, ENABLE);
mbed_official 216:577900467c9e 151 RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, DISABLE);
mbed_official 216:577900467c9e 152 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, DISABLE);
mbed_official 216:577900467c9e 153 }
mbed_official 216:577900467c9e 154 if (obj->uart == UART_2) {
mbed_official 216:577900467c9e 155 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, ENABLE);
mbed_official 216:577900467c9e 156 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, DISABLE);
mbed_official 216:577900467c9e 157 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, DISABLE);
mbed_official 216:577900467c9e 158 }
mbed_official 216:577900467c9e 159 if (obj->uart == UART_3) {
mbed_official 216:577900467c9e 160 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART3, ENABLE);
mbed_official 216:577900467c9e 161 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART3, DISABLE);
mbed_official 216:577900467c9e 162 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, DISABLE);
mbed_official 216:577900467c9e 163 }
mbed_official 216:577900467c9e 164
mbed_official 216:577900467c9e 165 // Configure GPIOs
mbed_official 216:577900467c9e 166 pin_function(obj->pin_tx, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 216:577900467c9e 167 pin_function(obj->pin_rx, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 216:577900467c9e 168
mbed_official 125:23cc3068a9e4 169 serial_irq_ids[obj->index] = 0;
mbed_official 125:23cc3068a9e4 170 }
mbed_official 125:23cc3068a9e4 171
mbed_official 125:23cc3068a9e4 172 void serial_baud(serial_t *obj, int baudrate) {
mbed_official 125:23cc3068a9e4 173 obj->baudrate = baudrate;
mbed_official 125:23cc3068a9e4 174 init_usart(obj);
mbed_official 125:23cc3068a9e4 175 }
mbed_official 125:23cc3068a9e4 176
mbed_official 125:23cc3068a9e4 177 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
mbed_official 242:7074e42da0b2 178 if (data_bits == 9) {
mbed_official 242:7074e42da0b2 179 obj->databits = USART_WordLength_9b;
mbed_official 242:7074e42da0b2 180 } else {
mbed_official 125:23cc3068a9e4 181 obj->databits = USART_WordLength_8b;
mbed_official 125:23cc3068a9e4 182 }
mbed_official 125:23cc3068a9e4 183
mbed_official 125:23cc3068a9e4 184 switch (parity) {
mbed_official 135:067cc8ba23da 185 case ParityOdd:
mbed_official 135:067cc8ba23da 186 case ParityForced0:
mbed_official 135:067cc8ba23da 187 obj->parity = USART_Parity_Odd;
mbed_official 135:067cc8ba23da 188 break;
mbed_official 135:067cc8ba23da 189 case ParityEven:
mbed_official 135:067cc8ba23da 190 case ParityForced1:
mbed_official 135:067cc8ba23da 191 obj->parity = USART_Parity_Even;
mbed_official 135:067cc8ba23da 192 break;
mbed_official 135:067cc8ba23da 193 default: // ParityNone
mbed_official 135:067cc8ba23da 194 obj->parity = USART_Parity_No;
mbed_official 135:067cc8ba23da 195 break;
mbed_official 125:23cc3068a9e4 196 }
mbed_official 135:067cc8ba23da 197
mbed_official 125:23cc3068a9e4 198 if (stop_bits == 2) {
mbed_official 125:23cc3068a9e4 199 obj->stopbits = USART_StopBits_2;
mbed_official 135:067cc8ba23da 200 } else {
mbed_official 125:23cc3068a9e4 201 obj->stopbits = USART_StopBits_1;
mbed_official 125:23cc3068a9e4 202 }
mbed_official 125:23cc3068a9e4 203
mbed_official 125:23cc3068a9e4 204 init_usart(obj);
mbed_official 125:23cc3068a9e4 205 }
mbed_official 125:23cc3068a9e4 206
mbed_official 125:23cc3068a9e4 207 /******************************************************************************
mbed_official 125:23cc3068a9e4 208 * INTERRUPTS HANDLING
mbed_official 125:23cc3068a9e4 209 ******************************************************************************/
mbed_official 125:23cc3068a9e4 210
mbed_official 125:23cc3068a9e4 211 // not api
mbed_official 125:23cc3068a9e4 212 static void uart_irq(USART_TypeDef* usart, int id) {
mbed_official 125:23cc3068a9e4 213 if (serial_irq_ids[id] != 0) {
mbed_official 125:23cc3068a9e4 214 if (USART_GetITStatus(usart, USART_IT_TC) != RESET) {
mbed_official 125:23cc3068a9e4 215 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 125:23cc3068a9e4 216 USART_ClearITPendingBit(usart, USART_IT_TC);
mbed_official 125:23cc3068a9e4 217 }
mbed_official 125:23cc3068a9e4 218 if (USART_GetITStatus(usart, USART_IT_RXNE) != RESET) {
mbed_official 125:23cc3068a9e4 219 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 125:23cc3068a9e4 220 USART_ClearITPendingBit(usart, USART_IT_RXNE);
mbed_official 125:23cc3068a9e4 221 }
mbed_official 125:23cc3068a9e4 222 }
mbed_official 125:23cc3068a9e4 223 }
mbed_official 125:23cc3068a9e4 224
mbed_official 135:067cc8ba23da 225 static void uart1_irq(void) {
mbed_official 135:067cc8ba23da 226 uart_irq((USART_TypeDef*)UART_1, 0);
mbed_official 135:067cc8ba23da 227 }
mbed_official 135:067cc8ba23da 228 static void uart2_irq(void) {
mbed_official 135:067cc8ba23da 229 uart_irq((USART_TypeDef*)UART_2, 1);
mbed_official 135:067cc8ba23da 230 }
mbed_official 135:067cc8ba23da 231 static void uart3_irq(void) {
mbed_official 135:067cc8ba23da 232 uart_irq((USART_TypeDef*)UART_3, 2);
mbed_official 135:067cc8ba23da 233 }
mbed_official 125:23cc3068a9e4 234
mbed_official 125:23cc3068a9e4 235 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
mbed_official 125:23cc3068a9e4 236 irq_handler = handler;
mbed_official 125:23cc3068a9e4 237 serial_irq_ids[obj->index] = id;
mbed_official 125:23cc3068a9e4 238 }
mbed_official 125:23cc3068a9e4 239
mbed_official 125:23cc3068a9e4 240 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
mbed_official 125:23cc3068a9e4 241 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 125:23cc3068a9e4 242 uint32_t vector = 0;
mbed_official 125:23cc3068a9e4 243 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 125:23cc3068a9e4 244
mbed_official 125:23cc3068a9e4 245 if (obj->uart == UART_1) {
mbed_official 135:067cc8ba23da 246 irq_n = USART1_IRQn;
mbed_official 135:067cc8ba23da 247 vector = (uint32_t)&uart1_irq;
mbed_official 125:23cc3068a9e4 248 }
mbed_official 125:23cc3068a9e4 249
mbed_official 125:23cc3068a9e4 250 if (obj->uart == UART_2) {
mbed_official 135:067cc8ba23da 251 irq_n = USART2_IRQn;
mbed_official 135:067cc8ba23da 252 vector = (uint32_t)&uart2_irq;
mbed_official 125:23cc3068a9e4 253 }
mbed_official 125:23cc3068a9e4 254
mbed_official 125:23cc3068a9e4 255 if (obj->uart == UART_3) {
mbed_official 135:067cc8ba23da 256 irq_n = USART3_IRQn;
mbed_official 135:067cc8ba23da 257 vector = (uint32_t)&uart3_irq;
mbed_official 125:23cc3068a9e4 258 }
mbed_official 125:23cc3068a9e4 259
mbed_official 125:23cc3068a9e4 260 if (enable) {
mbed_official 135:067cc8ba23da 261
mbed_official 125:23cc3068a9e4 262 if (irq == RxIrq) {
mbed_official 125:23cc3068a9e4 263 USART_ITConfig(usart, USART_IT_RXNE, ENABLE);
mbed_official 135:067cc8ba23da 264 } else { // TxIrq
mbed_official 125:23cc3068a9e4 265 USART_ITConfig(usart, USART_IT_TC, ENABLE);
mbed_official 135:067cc8ba23da 266 }
mbed_official 135:067cc8ba23da 267
mbed_official 125:23cc3068a9e4 268 NVIC_SetVector(irq_n, vector);
mbed_official 125:23cc3068a9e4 269 NVIC_EnableIRQ(irq_n);
mbed_official 135:067cc8ba23da 270
mbed_official 125:23cc3068a9e4 271 } else { // disable
mbed_official 135:067cc8ba23da 272
mbed_official 125:23cc3068a9e4 273 int all_disabled = 0;
mbed_official 135:067cc8ba23da 274
mbed_official 125:23cc3068a9e4 275 if (irq == RxIrq) {
mbed_official 125:23cc3068a9e4 276 USART_ITConfig(usart, USART_IT_RXNE, DISABLE);
mbed_official 125:23cc3068a9e4 277 // Check if TxIrq is disabled too
mbed_official 125:23cc3068a9e4 278 if ((usart->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 135:067cc8ba23da 279 } else { // TxIrq
mbed_official 125:23cc3068a9e4 280 USART_ITConfig(usart, USART_IT_TXE, DISABLE);
mbed_official 125:23cc3068a9e4 281 // Check if RxIrq is disabled too
mbed_official 135:067cc8ba23da 282 if ((usart->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 125:23cc3068a9e4 283 }
mbed_official 135:067cc8ba23da 284
mbed_official 125:23cc3068a9e4 285 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 135:067cc8ba23da 286
mbed_official 135:067cc8ba23da 287 }
mbed_official 125:23cc3068a9e4 288 }
mbed_official 125:23cc3068a9e4 289
mbed_official 125:23cc3068a9e4 290 /******************************************************************************
mbed_official 125:23cc3068a9e4 291 * READ/WRITE
mbed_official 125:23cc3068a9e4 292 ******************************************************************************/
mbed_official 125:23cc3068a9e4 293
mbed_official 125:23cc3068a9e4 294 int serial_getc(serial_t *obj) {
mbed_official 125:23cc3068a9e4 295 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 125:23cc3068a9e4 296 while (!serial_readable(obj));
mbed_official 125:23cc3068a9e4 297 return (int)(USART_ReceiveData(usart));
mbed_official 125:23cc3068a9e4 298 }
mbed_official 125:23cc3068a9e4 299
mbed_official 125:23cc3068a9e4 300 void serial_putc(serial_t *obj, int c) {
mbed_official 125:23cc3068a9e4 301 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 125:23cc3068a9e4 302 while (!serial_writable(obj));
mbed_official 125:23cc3068a9e4 303 USART_SendData(usart, (uint16_t)c);
mbed_official 125:23cc3068a9e4 304 }
mbed_official 125:23cc3068a9e4 305
mbed_official 125:23cc3068a9e4 306 int serial_readable(serial_t *obj) {
mbed_official 125:23cc3068a9e4 307 int status;
mbed_official 125:23cc3068a9e4 308 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 125:23cc3068a9e4 309 // Check if data is received
mbed_official 125:23cc3068a9e4 310 status = ((USART_GetFlagStatus(usart, USART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 125:23cc3068a9e4 311 return status;
mbed_official 125:23cc3068a9e4 312 }
mbed_official 125:23cc3068a9e4 313
mbed_official 125:23cc3068a9e4 314 int serial_writable(serial_t *obj) {
mbed_official 125:23cc3068a9e4 315 int status;
mbed_official 125:23cc3068a9e4 316 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 125:23cc3068a9e4 317 // Check if data is transmitted
mbed_official 125:23cc3068a9e4 318 status = ((USART_GetFlagStatus(usart, USART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 125:23cc3068a9e4 319 return status;
mbed_official 125:23cc3068a9e4 320 }
mbed_official 125:23cc3068a9e4 321
mbed_official 125:23cc3068a9e4 322 void serial_clear(serial_t *obj) {
mbed_official 125:23cc3068a9e4 323 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 125:23cc3068a9e4 324 USART_ClearFlag(usart, USART_FLAG_TXE);
mbed_official 125:23cc3068a9e4 325 USART_ClearFlag(usart, USART_FLAG_RXNE);
mbed_official 125:23cc3068a9e4 326 }
mbed_official 125:23cc3068a9e4 327
mbed_official 125:23cc3068a9e4 328 void serial_pinout_tx(PinName tx) {
mbed_official 125:23cc3068a9e4 329 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 125:23cc3068a9e4 330 }
mbed_official 125:23cc3068a9e4 331
mbed_official 125:23cc3068a9e4 332 void serial_break_set(serial_t *obj) {
mbed_official 125:23cc3068a9e4 333 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 125:23cc3068a9e4 334 USART_RequestCmd(usart, USART_Request_SBKRQ, ENABLE);
mbed_official 125:23cc3068a9e4 335 }
mbed_official 125:23cc3068a9e4 336
mbed_official 125:23cc3068a9e4 337 void serial_break_clear(serial_t *obj) {
mbed_official 125:23cc3068a9e4 338 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 125:23cc3068a9e4 339 USART_RequestCmd(usart, USART_Request_SBKRQ, DISABLE);
mbed_official 125:23cc3068a9e4 340 USART_ClearFlag(usart, USART_FLAG_SBK);
mbed_official 125:23cc3068a9e4 341 }
mbed_official 162:937d965048d3 342
mbed_official 162:937d965048d3 343 #endif