Sigve Sebastian Farstad / mbed-src

mbed w/ spi bug fig

Dependents:   display-puck

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_DISCO_F051R8/serial_api.c@240:9a7c54113eaf, 2014-06-26 (annotated)

Committer:
mbed_official
Date:
Thu Jun 26 09:45:08 2014 +0100
Revision:
240:9a7c54113eaf
Parent:
227:7bd0639b8911 
Synchronized with git revision 288cce7281f1f4bd5ab515fff36cdf6090bc4480



Full URL: https://github.com/mbedmicro/mbed/commit/288cce7281f1f4bd5ab515fff36cdf6090bc4480/



[DISCO-F051R8] Updated with F030R8 recent changes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 130:1dec54e4aec3 1 /* mbed Microcontroller Library
mbed_official 130:1dec54e4aec3 2 *******************************************************************************
mbed_official 130:1dec54e4aec3 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 130:1dec54e4aec3 4 * All rights reserved.
mbed_official 130:1dec54e4aec3 5 *
mbed_official 130:1dec54e4aec3 6 * Redistribution and use in source and binary forms, with or without
mbed_official 130:1dec54e4aec3 7 * modification, are permitted provided that the following conditions are met:
mbed_official 130:1dec54e4aec3 8 *
mbed_official 130:1dec54e4aec3 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 130:1dec54e4aec3 10 * this list of conditions and the following disclaimer.
mbed_official 130:1dec54e4aec3 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 130:1dec54e4aec3 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 130:1dec54e4aec3 13 * and/or other materials provided with the distribution.
mbed_official 130:1dec54e4aec3 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 130:1dec54e4aec3 15 * may be used to endorse or promote products derived from this software
mbed_official 130:1dec54e4aec3 16 * without specific prior written permission.
mbed_official 130:1dec54e4aec3 17 *
mbed_official 130:1dec54e4aec3 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 130:1dec54e4aec3 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 130:1dec54e4aec3 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 130:1dec54e4aec3 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 130:1dec54e4aec3 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 130:1dec54e4aec3 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 130:1dec54e4aec3 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 130:1dec54e4aec3 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 130:1dec54e4aec3 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 130:1dec54e4aec3 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 130:1dec54e4aec3 28 *******************************************************************************
mbed_official 130:1dec54e4aec3 29 */
mbed_official 227:7bd0639b8911 30 #include "mbed_assert.h"
mbed_official 130:1dec54e4aec3 31 #include "serial_api.h"
mbed_official 240:9a7c54113eaf 32
mbed_official 240:9a7c54113eaf 33 #if DEVICE_SERIAL
mbed_official 240:9a7c54113eaf 34
mbed_official 130:1dec54e4aec3 35 #include "cmsis.h"
mbed_official 130:1dec54e4aec3 36 #include "pinmap.h"
mbed_official 130:1dec54e4aec3 37 #include <string.h>
mbed_official 130:1dec54e4aec3 38
mbed_official 130:1dec54e4aec3 39 static const PinMap PinMap_UART_TX[] = {
mbed_official 240:9a7c54113eaf 40 {PA_2, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)},
mbed_official 130:1dec54e4aec3 41 {PA_9, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)},
mbed_official 240:9a7c54113eaf 42 {PB_6, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_0)},
mbed_official 130:1dec54e4aec3 43 {NC, NC, 0}
mbed_official 130:1dec54e4aec3 44 };
mbed_official 130:1dec54e4aec3 45
mbed_official 130:1dec54e4aec3 46 static const PinMap PinMap_UART_RX[] = {
mbed_official 240:9a7c54113eaf 47 {PA_3, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)},
mbed_official 130:1dec54e4aec3 48 {PA_10, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)},
mbed_official 240:9a7c54113eaf 49 {PA_15, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_1)},
mbed_official 240:9a7c54113eaf 50 {PB_7, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_0)},
mbed_official 130:1dec54e4aec3 51 {NC, NC, 0}
mbed_official 130:1dec54e4aec3 52 };
mbed_official 130:1dec54e4aec3 53
mbed_official 130:1dec54e4aec3 54 #define UART_NUM (2)
mbed_official 130:1dec54e4aec3 55
mbed_official 130:1dec54e4aec3 56 static uint32_t serial_irq_ids[UART_NUM] = {0};
mbed_official 130:1dec54e4aec3 57
mbed_official 130:1dec54e4aec3 58 static uart_irq_handler irq_handler;
mbed_official 130:1dec54e4aec3 59
mbed_official 130:1dec54e4aec3 60 int stdio_uart_inited = 0;
mbed_official 130:1dec54e4aec3 61 serial_t stdio_uart;
mbed_official 130:1dec54e4aec3 62
mbed_official 130:1dec54e4aec3 63 static void init_usart(serial_t *obj) {
mbed_official 130:1dec54e4aec3 64 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 130:1dec54e4aec3 65 USART_InitTypeDef USART_InitStructure;
mbed_official 130:1dec54e4aec3 66
mbed_official 130:1dec54e4aec3 67 USART_Cmd(usart, DISABLE);
mbed_official 130:1dec54e4aec3 68
mbed_official 130:1dec54e4aec3 69 USART_InitStructure.USART_BaudRate = obj->baudrate;
mbed_official 130:1dec54e4aec3 70 USART_InitStructure.USART_WordLength = obj->databits;
mbed_official 130:1dec54e4aec3 71 USART_InitStructure.USART_StopBits = obj->stopbits;
mbed_official 130:1dec54e4aec3 72 USART_InitStructure.USART_Parity = obj->parity;
mbed_official 130:1dec54e4aec3 73 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
mbed_official 130:1dec54e4aec3 74 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
mbed_official 130:1dec54e4aec3 75 USART_Init(usart, &USART_InitStructure);
mbed_official 130:1dec54e4aec3 76
mbed_official 130:1dec54e4aec3 77 USART_Cmd(usart, ENABLE);
mbed_official 130:1dec54e4aec3 78 }
mbed_official 130:1dec54e4aec3 79
mbed_official 227:7bd0639b8911 80 void serial_init(serial_t *obj, PinName tx, PinName rx) {
mbed_official 130:1dec54e4aec3 81 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 130:1dec54e4aec3 82 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 130:1dec54e4aec3 83 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 130:1dec54e4aec3 84
mbed_official 130:1dec54e4aec3 85 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 130:1dec54e4aec3 86 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 227:7bd0639b8911 87 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 130:1dec54e4aec3 88
mbed_official 130:1dec54e4aec3 89 // Enable USART clock
mbed_official 130:1dec54e4aec3 90 if (obj->uart == UART_1) {
mbed_official 227:7bd0639b8911 91 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
mbed_official 240:9a7c54113eaf 92 obj->index = 0;
mbed_official 130:1dec54e4aec3 93 }
mbed_official 130:1dec54e4aec3 94 if (obj->uart == UART_2) {
mbed_official 227:7bd0639b8911 95 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
mbed_official 240:9a7c54113eaf 96 obj->index = 1;
mbed_official 130:1dec54e4aec3 97 }
mbed_official 130:1dec54e4aec3 98
mbed_official 130:1dec54e4aec3 99 // Configure the UART pins
mbed_official 130:1dec54e4aec3 100 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 130:1dec54e4aec3 101 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 130:1dec54e4aec3 102 pin_mode(tx, PullUp);
mbed_official 130:1dec54e4aec3 103 pin_mode(rx, PullUp);
mbed_official 130:1dec54e4aec3 104
mbed_official 130:1dec54e4aec3 105 // Configure UART
mbed_official 130:1dec54e4aec3 106 obj->baudrate = 9600;
mbed_official 130:1dec54e4aec3 107 obj->databits = USART_WordLength_8b;
mbed_official 130:1dec54e4aec3 108 obj->stopbits = USART_StopBits_1;
mbed_official 227:7bd0639b8911 109 obj->parity = USART_Parity_No;
mbed_official 130:1dec54e4aec3 110
mbed_official 240:9a7c54113eaf 111 obj->pin_tx = tx;
mbed_official 240:9a7c54113eaf 112 obj->pin_rx = rx;
mbed_official 130:1dec54e4aec3 113
mbed_official 240:9a7c54113eaf 114 init_usart(obj);
mbed_official 130:1dec54e4aec3 115
mbed_official 130:1dec54e4aec3 116 // For stdio management
mbed_official 130:1dec54e4aec3 117 if (obj->uart == STDIO_UART) {
mbed_official 130:1dec54e4aec3 118 stdio_uart_inited = 1;
mbed_official 130:1dec54e4aec3 119 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 130:1dec54e4aec3 120 }
mbed_official 130:1dec54e4aec3 121
mbed_official 130:1dec54e4aec3 122 }
mbed_official 130:1dec54e4aec3 123
mbed_official 130:1dec54e4aec3 124 void serial_free(serial_t *obj) {
mbed_official 240:9a7c54113eaf 125 // Reset UART and disable clock
mbed_official 240:9a7c54113eaf 126 if (obj->uart == UART_1) {
mbed_official 240:9a7c54113eaf 127 RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, ENABLE);
mbed_official 240:9a7c54113eaf 128 RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, DISABLE);
mbed_official 240:9a7c54113eaf 129 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, DISABLE);
mbed_official 240:9a7c54113eaf 130 }
mbed_official 240:9a7c54113eaf 131 if (obj->uart == UART_2) {
mbed_official 240:9a7c54113eaf 132 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, ENABLE);
mbed_official 240:9a7c54113eaf 133 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, DISABLE);
mbed_official 240:9a7c54113eaf 134 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, DISABLE);
mbed_official 240:9a7c54113eaf 135 }
mbed_official 240:9a7c54113eaf 136
mbed_official 240:9a7c54113eaf 137 // Configure GPIOs
mbed_official 240:9a7c54113eaf 138 pin_function(obj->pin_tx, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 240:9a7c54113eaf 139 pin_function(obj->pin_rx, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 240:9a7c54113eaf 140
mbed_official 130:1dec54e4aec3 141 serial_irq_ids[obj->index] = 0;
mbed_official 130:1dec54e4aec3 142 }
mbed_official 130:1dec54e4aec3 143
mbed_official 130:1dec54e4aec3 144 void serial_baud(serial_t *obj, int baudrate) {
mbed_official 130:1dec54e4aec3 145 obj->baudrate = baudrate;
mbed_official 130:1dec54e4aec3 146 init_usart(obj);
mbed_official 130:1dec54e4aec3 147 }
mbed_official 130:1dec54e4aec3 148
mbed_official 130:1dec54e4aec3 149 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
mbed_official 130:1dec54e4aec3 150 if (data_bits == 8) {
mbed_official 130:1dec54e4aec3 151 obj->databits = USART_WordLength_8b;
mbed_official 240:9a7c54113eaf 152 } else {
mbed_official 130:1dec54e4aec3 153 obj->databits = USART_WordLength_9b;
mbed_official 130:1dec54e4aec3 154 }
mbed_official 130:1dec54e4aec3 155
mbed_official 130:1dec54e4aec3 156 switch (parity) {
mbed_official 130:1dec54e4aec3 157 case ParityOdd:
mbed_official 130:1dec54e4aec3 158 case ParityForced0:
mbed_official 130:1dec54e4aec3 159 obj->parity = USART_Parity_Odd;
mbed_official 130:1dec54e4aec3 160 break;
mbed_official 130:1dec54e4aec3 161 case ParityEven:
mbed_official 227:7bd0639b8911 162 case ParityForced1:
mbed_official 130:1dec54e4aec3 163 obj->parity = USART_Parity_Even;
mbed_official 130:1dec54e4aec3 164 break;
mbed_official 130:1dec54e4aec3 165 default: // ParityNone
mbed_official 130:1dec54e4aec3 166 obj->parity = USART_Parity_No;
mbed_official 130:1dec54e4aec3 167 break;
mbed_official 130:1dec54e4aec3 168 }
mbed_official 130:1dec54e4aec3 169
mbed_official 130:1dec54e4aec3 170 if (stop_bits == 2) {
mbed_official 130:1dec54e4aec3 171 obj->stopbits = USART_StopBits_2;
mbed_official 240:9a7c54113eaf 172 } else {
mbed_official 130:1dec54e4aec3 173 obj->stopbits = USART_StopBits_1;
mbed_official 130:1dec54e4aec3 174 }
mbed_official 130:1dec54e4aec3 175
mbed_official 130:1dec54e4aec3 176 init_usart(obj);
mbed_official 130:1dec54e4aec3 177 }
mbed_official 130:1dec54e4aec3 178
mbed_official 130:1dec54e4aec3 179 /******************************************************************************
mbed_official 130:1dec54e4aec3 180 * INTERRUPTS HANDLING
mbed_official 130:1dec54e4aec3 181 ******************************************************************************/
mbed_official 130:1dec54e4aec3 182
mbed_official 130:1dec54e4aec3 183 // not api
mbed_official 130:1dec54e4aec3 184 static void uart_irq(USART_TypeDef* usart, int id) {
mbed_official 130:1dec54e4aec3 185 if (serial_irq_ids[id] != 0) {
mbed_official 130:1dec54e4aec3 186 if (USART_GetITStatus(usart, USART_IT_TC) != RESET) {
mbed_official 130:1dec54e4aec3 187 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 130:1dec54e4aec3 188 USART_ClearITPendingBit(usart, USART_IT_TC);
mbed_official 130:1dec54e4aec3 189 }
mbed_official 130:1dec54e4aec3 190 if (USART_GetITStatus(usart, USART_IT_RXNE) != RESET) {
mbed_official 130:1dec54e4aec3 191 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 130:1dec54e4aec3 192 USART_ClearITPendingBit(usart, USART_IT_RXNE);
mbed_official 130:1dec54e4aec3 193 }
mbed_official 130:1dec54e4aec3 194 }
mbed_official 130:1dec54e4aec3 195 }
mbed_official 130:1dec54e4aec3 196
mbed_official 240:9a7c54113eaf 197 static void uart1_irq(void) {
mbed_official 240:9a7c54113eaf 198 uart_irq((USART_TypeDef*)UART_1, 0);
mbed_official 240:9a7c54113eaf 199 }
mbed_official 240:9a7c54113eaf 200 static void uart2_irq(void) {
mbed_official 240:9a7c54113eaf 201 uart_irq((USART_TypeDef*)UART_2, 1);
mbed_official 240:9a7c54113eaf 202 }
mbed_official 130:1dec54e4aec3 203
mbed_official 130:1dec54e4aec3 204 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
mbed_official 130:1dec54e4aec3 205 irq_handler = handler;
mbed_official 130:1dec54e4aec3 206 serial_irq_ids[obj->index] = id;
mbed_official 130:1dec54e4aec3 207 }
mbed_official 130:1dec54e4aec3 208
mbed_official 130:1dec54e4aec3 209 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
mbed_official 130:1dec54e4aec3 210 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 130:1dec54e4aec3 211 uint32_t vector = 0;
mbed_official 130:1dec54e4aec3 212 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 130:1dec54e4aec3 213
mbed_official 130:1dec54e4aec3 214 if (obj->uart == UART_1) {
mbed_official 130:1dec54e4aec3 215 irq_n = USART1_IRQn;
mbed_official 130:1dec54e4aec3 216 vector = (uint32_t)&uart1_irq;
mbed_official 130:1dec54e4aec3 217 }
mbed_official 130:1dec54e4aec3 218
mbed_official 130:1dec54e4aec3 219 if (obj->uart == UART_2) {
mbed_official 130:1dec54e4aec3 220 irq_n = USART2_IRQn;
mbed_official 130:1dec54e4aec3 221 vector = (uint32_t)&uart2_irq;
mbed_official 130:1dec54e4aec3 222 }
mbed_official 130:1dec54e4aec3 223
mbed_official 130:1dec54e4aec3 224 if (enable) {
mbed_official 130:1dec54e4aec3 225
mbed_official 130:1dec54e4aec3 226 if (irq == RxIrq) {
mbed_official 130:1dec54e4aec3 227 USART_ITConfig(usart, USART_IT_RXNE, ENABLE);
mbed_official 240:9a7c54113eaf 228 } else { // TxIrq
mbed_official 130:1dec54e4aec3 229 USART_ITConfig(usart, USART_IT_TC, ENABLE);
mbed_official 227:7bd0639b8911 230 }
mbed_official 130:1dec54e4aec3 231
mbed_official 130:1dec54e4aec3 232 NVIC_SetVector(irq_n, vector);
mbed_official 130:1dec54e4aec3 233 NVIC_EnableIRQ(irq_n);
mbed_official 130:1dec54e4aec3 234
mbed_official 130:1dec54e4aec3 235 } else { // disable
mbed_official 130:1dec54e4aec3 236
mbed_official 130:1dec54e4aec3 237 int all_disabled = 0;
mbed_official 130:1dec54e4aec3 238
mbed_official 130:1dec54e4aec3 239 if (irq == RxIrq) {
mbed_official 130:1dec54e4aec3 240 USART_ITConfig(usart, USART_IT_RXNE, DISABLE);
mbed_official 130:1dec54e4aec3 241 // Check if TxIrq is disabled too
mbed_official 130:1dec54e4aec3 242 if ((usart->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 240:9a7c54113eaf 243 } else { // TxIrq
mbed_official 130:1dec54e4aec3 244 USART_ITConfig(usart, USART_IT_TXE, DISABLE);
mbed_official 130:1dec54e4aec3 245 // Check if RxIrq is disabled too
mbed_official 227:7bd0639b8911 246 if ((usart->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 130:1dec54e4aec3 247 }
mbed_official 130:1dec54e4aec3 248
mbed_official 130:1dec54e4aec3 249 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 130:1dec54e4aec3 250
mbed_official 227:7bd0639b8911 251 }
mbed_official 130:1dec54e4aec3 252 }
mbed_official 130:1dec54e4aec3 253
mbed_official 130:1dec54e4aec3 254 /******************************************************************************
mbed_official 130:1dec54e4aec3 255 * READ/WRITE
mbed_official 130:1dec54e4aec3 256 ******************************************************************************/
mbed_official 130:1dec54e4aec3 257
mbed_official 130:1dec54e4aec3 258 int serial_getc(serial_t *obj) {
mbed_official 130:1dec54e4aec3 259 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 130:1dec54e4aec3 260 while (!serial_readable(obj));
mbed_official 130:1dec54e4aec3 261 return (int)(USART_ReceiveData(usart));
mbed_official 130:1dec54e4aec3 262 }
mbed_official 130:1dec54e4aec3 263
mbed_official 130:1dec54e4aec3 264 void serial_putc(serial_t *obj, int c) {
mbed_official 130:1dec54e4aec3 265 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 130:1dec54e4aec3 266 while (!serial_writable(obj));
mbed_official 130:1dec54e4aec3 267 USART_SendData(usart, (uint16_t)c);
mbed_official 130:1dec54e4aec3 268 }
mbed_official 130:1dec54e4aec3 269
mbed_official 130:1dec54e4aec3 270 int serial_readable(serial_t *obj) {
mbed_official 130:1dec54e4aec3 271 int status;
mbed_official 130:1dec54e4aec3 272 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 130:1dec54e4aec3 273 // Check if data is received
mbed_official 130:1dec54e4aec3 274 status = ((USART_GetFlagStatus(usart, USART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 130:1dec54e4aec3 275 return status;
mbed_official 130:1dec54e4aec3 276 }
mbed_official 130:1dec54e4aec3 277
mbed_official 130:1dec54e4aec3 278 int serial_writable(serial_t *obj) {
mbed_official 130:1dec54e4aec3 279 int status;
mbed_official 130:1dec54e4aec3 280 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 130:1dec54e4aec3 281 // Check if data is transmitted
mbed_official 130:1dec54e4aec3 282 status = ((USART_GetFlagStatus(usart, USART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 130:1dec54e4aec3 283 return status;
mbed_official 130:1dec54e4aec3 284 }
mbed_official 130:1dec54e4aec3 285
mbed_official 130:1dec54e4aec3 286 void serial_clear(serial_t *obj) {
mbed_official 130:1dec54e4aec3 287 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 130:1dec54e4aec3 288 USART_ClearFlag(usart, USART_FLAG_TXE);
mbed_official 130:1dec54e4aec3 289 USART_ClearFlag(usart, USART_FLAG_RXNE);
mbed_official 130:1dec54e4aec3 290 }
mbed_official 130:1dec54e4aec3 291
mbed_official 130:1dec54e4aec3 292 void serial_pinout_tx(PinName tx) {
mbed_official 130:1dec54e4aec3 293 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 130:1dec54e4aec3 294 }
mbed_official 130:1dec54e4aec3 295
mbed_official 130:1dec54e4aec3 296 void serial_break_set(serial_t *obj) {
mbed_official 130:1dec54e4aec3 297 }
mbed_official 130:1dec54e4aec3 298
mbed_official 130:1dec54e4aec3 299 void serial_break_clear(serial_t *obj) {
mbed_official 130:1dec54e4aec3 300 }
mbed_official 240:9a7c54113eaf 301
mbed_official 240:9a7c54113eaf 302 #endif