test / mbed_in_china

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Dependents:   mbed_in_china_blink_led

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targets/hal/TARGET_STM/TARGET_NUCLEO_L152RE/serial_api.c@129:0182c99221bc, 2014-03-20 (annotated)

Committer:
mbed_official
Date:
Thu Mar 20 11:45:07 2014 +0000
Revision:
129:0182c99221bc
Parent:
118:b44c45162f28 
Synchronized with git revision 93e44fb5a5aa010177943aaaec0126ed8b8e014d



Full URL: https://github.com/mbedmicro/mbed/commit/93e44fb5a5aa010177943aaaec0126ed8b8e014d/



[NUCLEO_F302R8] and [NUCLEO_L152RE] updates

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 76:aeb1df146756 1 /* mbed Microcontroller Library
mbed_official 76:aeb1df146756 2 *******************************************************************************
mbed_official 76:aeb1df146756 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 76:aeb1df146756 4 * All rights reserved.
mbed_official 76:aeb1df146756 5 *
mbed_official 76:aeb1df146756 6 * Redistribution and use in source and binary forms, with or without
mbed_official 76:aeb1df146756 7 * modification, are permitted provided that the following conditions are met:
mbed_official 76:aeb1df146756 8 *
mbed_official 76:aeb1df146756 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 76:aeb1df146756 10 * this list of conditions and the following disclaimer.
mbed_official 76:aeb1df146756 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 76:aeb1df146756 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 76:aeb1df146756 13 * and/or other materials provided with the distribution.
mbed_official 76:aeb1df146756 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 76:aeb1df146756 15 * may be used to endorse or promote products derived from this software
mbed_official 76:aeb1df146756 16 * without specific prior written permission.
mbed_official 76:aeb1df146756 17 *
mbed_official 76:aeb1df146756 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 76:aeb1df146756 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 76:aeb1df146756 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 76:aeb1df146756 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 76:aeb1df146756 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 76:aeb1df146756 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 76:aeb1df146756 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 76:aeb1df146756 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 76:aeb1df146756 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 76:aeb1df146756 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 76:aeb1df146756 28 *******************************************************************************
mbed_official 76:aeb1df146756 29 */
mbed_official 76:aeb1df146756 30 #include "serial_api.h"
mbed_official 76:aeb1df146756 31 #include "cmsis.h"
mbed_official 76:aeb1df146756 32 #include "pinmap.h"
mbed_official 76:aeb1df146756 33 #include "error.h"
mbed_official 76:aeb1df146756 34 #include <string.h>
mbed_official 76:aeb1df146756 35
mbed_official 76:aeb1df146756 36 static const PinMap PinMap_UART_TX[] = {
mbed_official 129:0182c99221bc 37 {PA_2, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART2)},
mbed_official 76:aeb1df146756 38 {PA_9, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART1)},
mbed_official 118:b44c45162f28 39 {PB_6, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART1)},
mbed_official 118:b44c45162f28 40 {PB_10, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART3)},
mbed_official 129:0182c99221bc 41 //{PC_10, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART3)},
mbed_official 129:0182c99221bc 42 {PC_10, UART_4, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_UART4)},
mbed_official 129:0182c99221bc 43 {PC_12, UART_5, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_UART5)},
mbed_official 76:aeb1df146756 44 {NC, NC, 0}
mbed_official 76:aeb1df146756 45 };
mbed_official 76:aeb1df146756 46
mbed_official 76:aeb1df146756 47 static const PinMap PinMap_UART_RX[] = {
mbed_official 129:0182c99221bc 48 {PA_3, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART2)},
mbed_official 76:aeb1df146756 49 {PA_10, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART1)},
mbed_official 129:0182c99221bc 50 {PB_7, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART1)},
mbed_official 118:b44c45162f28 51 {PB_11, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART3)},
mbed_official 129:0182c99221bc 52 //{PC_11, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART3)},
mbed_official 118:b44c45162f28 53 {PC_11, UART_4, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_UART4)},
mbed_official 129:0182c99221bc 54 {PD_2, UART_5, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_UART5)},
mbed_official 76:aeb1df146756 55 {NC, NC, 0}
mbed_official 76:aeb1df146756 56 };
mbed_official 76:aeb1df146756 57
mbed_official 118:b44c45162f28 58 #define UART_NUM (5)
mbed_official 76:aeb1df146756 59
mbed_official 76:aeb1df146756 60 static uint32_t serial_irq_ids[UART_NUM] = {0};
mbed_official 76:aeb1df146756 61
mbed_official 76:aeb1df146756 62 static uart_irq_handler irq_handler;
mbed_official 76:aeb1df146756 63
mbed_official 76:aeb1df146756 64 int stdio_uart_inited = 0;
mbed_official 76:aeb1df146756 65 serial_t stdio_uart;
mbed_official 76:aeb1df146756 66
mbed_official 76:aeb1df146756 67 static void init_usart(serial_t *obj) {
mbed_official 76:aeb1df146756 68 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 69 USART_InitTypeDef USART_InitStructure;
mbed_official 76:aeb1df146756 70
mbed_official 76:aeb1df146756 71 USART_Cmd(usart, DISABLE);
mbed_official 76:aeb1df146756 72
mbed_official 129:0182c99221bc 73 USART_InitStructure.USART_BaudRate = obj->baudrate;
mbed_official 129:0182c99221bc 74 USART_InitStructure.USART_WordLength = obj->databits;
mbed_official 129:0182c99221bc 75 USART_InitStructure.USART_StopBits = obj->stopbits;
mbed_official 129:0182c99221bc 76 USART_InitStructure.USART_Parity = obj->parity;
mbed_official 76:aeb1df146756 77 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
mbed_official 129:0182c99221bc 78 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
mbed_official 76:aeb1df146756 79 USART_Init(usart, &USART_InitStructure);
mbed_official 76:aeb1df146756 80
mbed_official 76:aeb1df146756 81 USART_Cmd(usart, ENABLE);
mbed_official 76:aeb1df146756 82 }
mbed_official 76:aeb1df146756 83
mbed_official 76:aeb1df146756 84 void serial_init(serial_t *obj, PinName tx, PinName rx) {
mbed_official 76:aeb1df146756 85 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 76:aeb1df146756 86 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 76:aeb1df146756 87 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 76:aeb1df146756 88
mbed_official 76:aeb1df146756 89 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 76:aeb1df146756 90 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 76:aeb1df146756 91
mbed_official 76:aeb1df146756 92 if (obj->uart == (UARTName)NC) {
mbed_official 76:aeb1df146756 93 error("Serial pinout mapping failed");
mbed_official 76:aeb1df146756 94 }
mbed_official 76:aeb1df146756 95
mbed_official 76:aeb1df146756 96 // Enable USART clock
mbed_official 76:aeb1df146756 97 if (obj->uart == UART_1) {
mbed_official 76:aeb1df146756 98 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
mbed_official 76:aeb1df146756 99 }
mbed_official 76:aeb1df146756 100 if (obj->uart == UART_2) {
mbed_official 76:aeb1df146756 101 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
mbed_official 76:aeb1df146756 102 }
mbed_official 129:0182c99221bc 103 if (obj->uart == UART_3) {
mbed_official 118:b44c45162f28 104 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
mbed_official 118:b44c45162f28 105 }
mbed_official 129:0182c99221bc 106 if (obj->uart == UART_4) {
mbed_official 118:b44c45162f28 107 RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART4, ENABLE);
mbed_official 118:b44c45162f28 108 }
mbed_official 129:0182c99221bc 109 if (obj->uart == UART_5) {
mbed_official 118:b44c45162f28 110 RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART5, ENABLE);
mbed_official 118:b44c45162f28 111 }
mbed_official 129:0182c99221bc 112
mbed_official 76:aeb1df146756 113 // Configure the UART pins
mbed_official 76:aeb1df146756 114 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 76:aeb1df146756 115 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 76:aeb1df146756 116 pin_mode(tx, PullUp);
mbed_official 76:aeb1df146756 117 pin_mode(rx, PullUp);
mbed_official 76:aeb1df146756 118
mbed_official 76:aeb1df146756 119 // Configure UART
mbed_official 76:aeb1df146756 120 obj->baudrate = 9600;
mbed_official 76:aeb1df146756 121 obj->databits = USART_WordLength_8b;
mbed_official 76:aeb1df146756 122 obj->stopbits = USART_StopBits_1;
mbed_official 76:aeb1df146756 123 obj->parity = USART_Parity_No;
mbed_official 76:aeb1df146756 124
mbed_official 76:aeb1df146756 125 init_usart(obj);
mbed_official 76:aeb1df146756 126
mbed_official 76:aeb1df146756 127 // The index is used by irq
mbed_official 76:aeb1df146756 128 if (obj->uart == UART_1) obj->index = 0;
mbed_official 76:aeb1df146756 129 if (obj->uart == UART_2) obj->index = 1;
mbed_official 118:b44c45162f28 130 if (obj->uart == UART_3) obj->index = 2;
mbed_official 118:b44c45162f28 131 if (obj->uart == UART_4) obj->index = 3;
mbed_official 118:b44c45162f28 132 if (obj->uart == UART_5) obj->index = 4;
mbed_official 76:aeb1df146756 133
mbed_official 76:aeb1df146756 134 // For stdio management
mbed_official 76:aeb1df146756 135 if (obj->uart == STDIO_UART) {
mbed_official 76:aeb1df146756 136 stdio_uart_inited = 1;
mbed_official 76:aeb1df146756 137 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 129:0182c99221bc 138 }
mbed_official 76:aeb1df146756 139 }
mbed_official 76:aeb1df146756 140
mbed_official 76:aeb1df146756 141 void serial_free(serial_t *obj) {
mbed_official 76:aeb1df146756 142 serial_irq_ids[obj->index] = 0;
mbed_official 76:aeb1df146756 143 }
mbed_official 76:aeb1df146756 144
mbed_official 76:aeb1df146756 145 void serial_baud(serial_t *obj, int baudrate) {
mbed_official 76:aeb1df146756 146 obj->baudrate = baudrate;
mbed_official 76:aeb1df146756 147 init_usart(obj);
mbed_official 76:aeb1df146756 148 }
mbed_official 76:aeb1df146756 149
mbed_official 76:aeb1df146756 150 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
mbed_official 76:aeb1df146756 151 if (data_bits == 8) {
mbed_official 76:aeb1df146756 152 obj->databits = USART_WordLength_8b;
mbed_official 76:aeb1df146756 153 }
mbed_official 76:aeb1df146756 154 else {
mbed_official 76:aeb1df146756 155 obj->databits = USART_WordLength_9b;
mbed_official 76:aeb1df146756 156 }
mbed_official 76:aeb1df146756 157
mbed_official 76:aeb1df146756 158 switch (parity) {
mbed_official 76:aeb1df146756 159 case ParityOdd:
mbed_official 76:aeb1df146756 160 case ParityForced0:
mbed_official 76:aeb1df146756 161 obj->parity = USART_Parity_Odd;
mbed_official 76:aeb1df146756 162 break;
mbed_official 76:aeb1df146756 163 case ParityEven:
mbed_official 76:aeb1df146756 164 case ParityForced1:
mbed_official 76:aeb1df146756 165 obj->parity = USART_Parity_Even;
mbed_official 76:aeb1df146756 166 break;
mbed_official 76:aeb1df146756 167 default: // ParityNone
mbed_official 76:aeb1df146756 168 obj->parity = USART_Parity_No;
mbed_official 76:aeb1df146756 169 break;
mbed_official 76:aeb1df146756 170 }
mbed_official 76:aeb1df146756 171
mbed_official 76:aeb1df146756 172 if (stop_bits == 2) {
mbed_official 76:aeb1df146756 173 obj->stopbits = USART_StopBits_2;
mbed_official 76:aeb1df146756 174 }
mbed_official 76:aeb1df146756 175 else {
mbed_official 76:aeb1df146756 176 obj->stopbits = USART_StopBits_1;
mbed_official 76:aeb1df146756 177 }
mbed_official 76:aeb1df146756 178
mbed_official 76:aeb1df146756 179 init_usart(obj);
mbed_official 76:aeb1df146756 180 }
mbed_official 76:aeb1df146756 181
mbed_official 76:aeb1df146756 182 /******************************************************************************
mbed_official 76:aeb1df146756 183 * INTERRUPTS HANDLING
mbed_official 76:aeb1df146756 184 ******************************************************************************/
mbed_official 76:aeb1df146756 185
mbed_official 76:aeb1df146756 186 // not api
mbed_official 76:aeb1df146756 187 static void uart_irq(USART_TypeDef* usart, int id) {
mbed_official 76:aeb1df146756 188 if (serial_irq_ids[id] != 0) {
mbed_official 76:aeb1df146756 189 if (USART_GetITStatus(usart, USART_IT_TC) != RESET) {
mbed_official 76:aeb1df146756 190 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 76:aeb1df146756 191 USART_ClearITPendingBit(usart, USART_IT_TC);
mbed_official 76:aeb1df146756 192 }
mbed_official 76:aeb1df146756 193 if (USART_GetITStatus(usart, USART_IT_RXNE) != RESET) {
mbed_official 76:aeb1df146756 194 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 76:aeb1df146756 195 USART_ClearITPendingBit(usart, USART_IT_RXNE);
mbed_official 76:aeb1df146756 196 }
mbed_official 76:aeb1df146756 197 }
mbed_official 76:aeb1df146756 198 }
mbed_official 76:aeb1df146756 199
mbed_official 76:aeb1df146756 200 static void uart1_irq(void) {uart_irq((USART_TypeDef*)UART_1, 0);}
mbed_official 76:aeb1df146756 201 static void uart2_irq(void) {uart_irq((USART_TypeDef*)UART_2, 1);}
mbed_official 118:b44c45162f28 202 static void uart3_irq(void) {uart_irq((USART_TypeDef*)UART_3, 2);}
mbed_official 118:b44c45162f28 203 static void uart4_irq(void) {uart_irq((USART_TypeDef*)UART_4, 3);}
mbed_official 118:b44c45162f28 204 static void uart5_irq(void) {uart_irq((USART_TypeDef*)UART_5, 4);}
mbed_official 76:aeb1df146756 205
mbed_official 76:aeb1df146756 206 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
mbed_official 76:aeb1df146756 207 irq_handler = handler;
mbed_official 76:aeb1df146756 208 serial_irq_ids[obj->index] = id;
mbed_official 76:aeb1df146756 209 }
mbed_official 76:aeb1df146756 210
mbed_official 76:aeb1df146756 211 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
mbed_official 76:aeb1df146756 212 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 76:aeb1df146756 213 uint32_t vector = 0;
mbed_official 76:aeb1df146756 214 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 215
mbed_official 76:aeb1df146756 216 if (obj->uart == UART_1) {
mbed_official 76:aeb1df146756 217 irq_n = USART1_IRQn;
mbed_official 76:aeb1df146756 218 vector = (uint32_t)&uart1_irq;
mbed_official 76:aeb1df146756 219 }
mbed_official 76:aeb1df146756 220
mbed_official 76:aeb1df146756 221 if (obj->uart == UART_2) {
mbed_official 76:aeb1df146756 222 irq_n = USART2_IRQn;
mbed_official 76:aeb1df146756 223 vector = (uint32_t)&uart2_irq;
mbed_official 76:aeb1df146756 224 }
mbed_official 129:0182c99221bc 225
mbed_official 118:b44c45162f28 226 if (obj->uart == UART_3) {
mbed_official 118:b44c45162f28 227 irq_n = USART3_IRQn;
mbed_official 118:b44c45162f28 228 vector = (uint32_t)&uart3_irq;
mbed_official 118:b44c45162f28 229 }
mbed_official 129:0182c99221bc 230
mbed_official 118:b44c45162f28 231 if (obj->uart == UART_4) {
mbed_official 118:b44c45162f28 232 irq_n = UART4_IRQn;
mbed_official 118:b44c45162f28 233 vector = (uint32_t)&uart4_irq;
mbed_official 118:b44c45162f28 234 }
mbed_official 129:0182c99221bc 235
mbed_official 118:b44c45162f28 236 if (obj->uart == UART_5) {
mbed_official 118:b44c45162f28 237 irq_n = UART5_IRQn;
mbed_official 118:b44c45162f28 238 vector = (uint32_t)&uart5_irq;
mbed_official 118:b44c45162f28 239 }
mbed_official 118:b44c45162f28 240
mbed_official 76:aeb1df146756 241 if (enable) {
mbed_official 76:aeb1df146756 242
mbed_official 76:aeb1df146756 243 if (irq == RxIrq) {
mbed_official 76:aeb1df146756 244 USART_ITConfig(usart, USART_IT_RXNE, ENABLE);
mbed_official 76:aeb1df146756 245 }
mbed_official 76:aeb1df146756 246 else { // TxIrq
mbed_official 76:aeb1df146756 247 USART_ITConfig(usart, USART_IT_TC, ENABLE);
mbed_official 76:aeb1df146756 248 }
mbed_official 76:aeb1df146756 249
mbed_official 76:aeb1df146756 250 NVIC_SetVector(irq_n, vector);
mbed_official 76:aeb1df146756 251 NVIC_EnableIRQ(irq_n);
mbed_official 76:aeb1df146756 252
mbed_official 76:aeb1df146756 253 } else { // disable
mbed_official 76:aeb1df146756 254
mbed_official 76:aeb1df146756 255 int all_disabled = 0;
mbed_official 76:aeb1df146756 256
mbed_official 76:aeb1df146756 257 if (irq == RxIrq) {
mbed_official 76:aeb1df146756 258 USART_ITConfig(usart, USART_IT_RXNE, DISABLE);
mbed_official 76:aeb1df146756 259 // Check if TxIrq is disabled too
mbed_official 76:aeb1df146756 260 if ((usart->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 76:aeb1df146756 261 }
mbed_official 76:aeb1df146756 262 else { // TxIrq
mbed_official 76:aeb1df146756 263 USART_ITConfig(usart, USART_IT_TXE, DISABLE);
mbed_official 76:aeb1df146756 264 // Check if RxIrq is disabled too
mbed_official 76:aeb1df146756 265 if ((usart->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 76:aeb1df146756 266 }
mbed_official 76:aeb1df146756 267
mbed_official 76:aeb1df146756 268 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 76:aeb1df146756 269
mbed_official 76:aeb1df146756 270 }
mbed_official 76:aeb1df146756 271 }
mbed_official 76:aeb1df146756 272
mbed_official 76:aeb1df146756 273 /******************************************************************************
mbed_official 76:aeb1df146756 274 * READ/WRITE
mbed_official 76:aeb1df146756 275 ******************************************************************************/
mbed_official 76:aeb1df146756 276
mbed_official 76:aeb1df146756 277 int serial_getc(serial_t *obj) {
mbed_official 76:aeb1df146756 278 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 279 while (!serial_readable(obj));
mbed_official 76:aeb1df146756 280 return (int)(USART_ReceiveData(usart));
mbed_official 76:aeb1df146756 281 }
mbed_official 76:aeb1df146756 282
mbed_official 76:aeb1df146756 283 void serial_putc(serial_t *obj, int c) {
mbed_official 76:aeb1df146756 284 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 285 while (!serial_writable(obj));
mbed_official 76:aeb1df146756 286 USART_SendData(usart, (uint16_t)c);
mbed_official 76:aeb1df146756 287 }
mbed_official 76:aeb1df146756 288
mbed_official 76:aeb1df146756 289 int serial_readable(serial_t *obj) {
mbed_official 76:aeb1df146756 290 int status;
mbed_official 76:aeb1df146756 291 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 292 // Check if data is received
mbed_official 76:aeb1df146756 293 status = ((USART_GetFlagStatus(usart, USART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 76:aeb1df146756 294 return status;
mbed_official 76:aeb1df146756 295 }
mbed_official 76:aeb1df146756 296
mbed_official 76:aeb1df146756 297 int serial_writable(serial_t *obj) {
mbed_official 76:aeb1df146756 298 int status;
mbed_official 76:aeb1df146756 299 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 300 // Check if data is transmitted
mbed_official 76:aeb1df146756 301 status = ((USART_GetFlagStatus(usart, USART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 76:aeb1df146756 302 return status;
mbed_official 76:aeb1df146756 303 }
mbed_official 76:aeb1df146756 304
mbed_official 76:aeb1df146756 305 void serial_clear(serial_t *obj) {
mbed_official 76:aeb1df146756 306 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 307 USART_ClearFlag(usart, USART_FLAG_TXE);
mbed_official 76:aeb1df146756 308 USART_ClearFlag(usart, USART_FLAG_RXNE);
mbed_official 76:aeb1df146756 309 }
mbed_official 76:aeb1df146756 310
mbed_official 76:aeb1df146756 311 void serial_pinout_tx(PinName tx) {
mbed_official 76:aeb1df146756 312 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 76:aeb1df146756 313 }
mbed_official 76:aeb1df146756 314
mbed_official 76:aeb1df146756 315 void serial_break_set(serial_t *obj) {
mbed_official 76:aeb1df146756 316 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 317 USART_SendBreak(usart);
mbed_official 76:aeb1df146756 318 }
mbed_official 76:aeb1df146756 319
mbed_official 76:aeb1df146756 320 void serial_break_clear(serial_t *obj) {
mbed_official 76:aeb1df146756 321 }