mbed official / mbed-src

mbed library sources

Dependents:   Encrypted my_mbed lklk CyaSSL_DTLS_Cellular ... more

Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F103RB/serial_api.c@215:83cf97a28428, 2014-05-27 (annotated)

Committer:
mbed_official
Date:
Tue May 27 08:30:06 2014 +0100
Revision:
215:83cf97a28428
Parent:
208:4557f4bb2dd5
Child:
227:7bd0639b8911
Synchronized with git revision a8b7f5df2cb5d7a76fda549a15b91fdaba6e2986



Full URL: https://github.com/mbedmicro/mbed/commit/a8b7f5df2cb5d7a76fda549a15b91fdaba6e2986/



[KLXX] Added RPC + RTOS support (KL05Z)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 52:a51c77007319 1 /* mbed Microcontroller Library
mbed_official 70:c1fbde68b492 2 *******************************************************************************
mbed_official 70:c1fbde68b492 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 70:c1fbde68b492 4 * All rights reserved.
mbed_official 52:a51c77007319 5 *
mbed_official 70:c1fbde68b492 6 * Redistribution and use in source and binary forms, with or without
mbed_official 70:c1fbde68b492 7 * modification, are permitted provided that the following conditions are met:
mbed_official 52:a51c77007319 8 *
mbed_official 70:c1fbde68b492 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 70:c1fbde68b492 10 * this list of conditions and the following disclaimer.
mbed_official 70:c1fbde68b492 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 70:c1fbde68b492 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 70:c1fbde68b492 13 * and/or other materials provided with the distribution.
mbed_official 70:c1fbde68b492 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 70:c1fbde68b492 15 * may be used to endorse or promote products derived from this software
mbed_official 70:c1fbde68b492 16 * without specific prior written permission.
mbed_official 52:a51c77007319 17 *
mbed_official 70:c1fbde68b492 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 70:c1fbde68b492 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 70:c1fbde68b492 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 70:c1fbde68b492 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 70:c1fbde68b492 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 70:c1fbde68b492 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 70:c1fbde68b492 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 70:c1fbde68b492 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 70:c1fbde68b492 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 70:c1fbde68b492 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 70:c1fbde68b492 28 *******************************************************************************
mbed_official 52:a51c77007319 29 */
mbed_official 52:a51c77007319 30 #include "serial_api.h"
mbed_official 174:8bb9f3a33240 31
mbed_official 174:8bb9f3a33240 32 #if DEVICE_SERIAL
mbed_official 174:8bb9f3a33240 33
mbed_official 52:a51c77007319 34 #include "cmsis.h"
mbed_official 52:a51c77007319 35 #include "pinmap.h"
mbed_official 52:a51c77007319 36 #include "error.h"
mbed_official 52:a51c77007319 37 #include <string.h>
mbed_official 52:a51c77007319 38
mbed_official 52:a51c77007319 39 static const PinMap PinMap_UART_TX[] = {
mbed_official 167:d5744491c362 40 {PA_2, UART_2, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)},
mbed_official 52:a51c77007319 41 {PA_9, UART_1, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)},
mbed_official 167:d5744491c362 42 {PB_6, UART_1, STM_PIN_DATA(GPIO_Mode_AF_PP, 3)}, // GPIO_Remap_USART1
mbed_official 167:d5744491c362 43 {PB_10, UART_3, STM_PIN_DATA(GPIO_Mode_AF_PP, 0)},
mbed_official 167:d5744491c362 44 {PC_10, UART_3, STM_PIN_DATA(GPIO_Mode_AF_PP, 5)}, // GPIO_PartialRemap_USART3
mbed_official 52:a51c77007319 45 {NC, NC, 0}
mbed_official 52:a51c77007319 46 };
mbed_official 52:a51c77007319 47
mbed_official 52:a51c77007319 48 static const PinMap PinMap_UART_RX[] = {
mbed_official 167:d5744491c362 49 {PA_3, UART_2, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0)},
mbed_official 52:a51c77007319 50 {PA_10, UART_1, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0)},
mbed_official 167:d5744491c362 51 {PB_7, UART_1, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 3)}, // GPIO_Remap_USART1
mbed_official 167:d5744491c362 52 {PB_11, UART_3, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0)},
mbed_official 167:d5744491c362 53 {PC_11, UART_3, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 5)}, // GPIO_PartialRemap_USART3
mbed_official 52:a51c77007319 54 {NC, NC, 0}
mbed_official 52:a51c77007319 55 };
mbed_official 52:a51c77007319 56
mbed_official 167:d5744491c362 57 #define UART_NUM (3)
mbed_official 52:a51c77007319 58
mbed_official 167:d5744491c362 59 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0};
mbed_official 52:a51c77007319 60
mbed_official 52:a51c77007319 61 static uart_irq_handler irq_handler;
mbed_official 52:a51c77007319 62
mbed_official 52:a51c77007319 63 int stdio_uart_inited = 0;
mbed_official 52:a51c77007319 64 serial_t stdio_uart;
mbed_official 52:a51c77007319 65
mbed_official 56:99eb381a3269 66 static void init_usart(serial_t *obj) {
mbed_official 56:99eb381a3269 67 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 68 USART_InitTypeDef USART_InitStructure;
mbed_official 174:8bb9f3a33240 69
mbed_official 56:99eb381a3269 70 USART_Cmd(usart, DISABLE);
mbed_official 56:99eb381a3269 71
mbed_official 167:d5744491c362 72 USART_InitStructure.USART_BaudRate = obj->baudrate;
mbed_official 167:d5744491c362 73 USART_InitStructure.USART_WordLength = obj->databits;
mbed_official 167:d5744491c362 74 USART_InitStructure.USART_StopBits = obj->stopbits;
mbed_official 167:d5744491c362 75 USART_InitStructure.USART_Parity = obj->parity;
mbed_official 56:99eb381a3269 76 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
mbed_official 167:d5744491c362 77 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
mbed_official 56:99eb381a3269 78 USART_Init(usart, &USART_InitStructure);
mbed_official 174:8bb9f3a33240 79
mbed_official 56:99eb381a3269 80 USART_Cmd(usart, ENABLE);
mbed_official 56:99eb381a3269 81 }
mbed_official 56:99eb381a3269 82
mbed_official 174:8bb9f3a33240 83 void serial_init(serial_t *obj, PinName tx, PinName rx) {
mbed_official 52:a51c77007319 84 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 52:a51c77007319 85 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 52:a51c77007319 86 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 174:8bb9f3a33240 87
mbed_official 52:a51c77007319 88 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 52:a51c77007319 89 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 52:a51c77007319 90
mbed_official 52:a51c77007319 91 if (obj->uart == (UARTName)NC) {
mbed_official 52:a51c77007319 92 error("Serial pinout mapping failed");
mbed_official 52:a51c77007319 93 }
mbed_official 56:99eb381a3269 94
mbed_official 52:a51c77007319 95 // Enable USART clock
mbed_official 52:a51c77007319 96 if (obj->uart == UART_1) {
mbed_official 174:8bb9f3a33240 97 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
mbed_official 215:83cf97a28428 98 obj->index = 0;
mbed_official 52:a51c77007319 99 }
mbed_official 52:a51c77007319 100 if (obj->uart == UART_2) {
mbed_official 174:8bb9f3a33240 101 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
mbed_official 215:83cf97a28428 102 obj->index = 1;
mbed_official 52:a51c77007319 103 }
mbed_official 167:d5744491c362 104 if (obj->uart == UART_3) {
mbed_official 174:8bb9f3a33240 105 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
mbed_official 215:83cf97a28428 106 obj->index = 2;
mbed_official 167:d5744491c362 107 }
mbed_official 174:8bb9f3a33240 108
mbed_official 52:a51c77007319 109 // Configure the UART pins
mbed_official 52:a51c77007319 110 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 52:a51c77007319 111 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 52:a51c77007319 112
mbed_official 52:a51c77007319 113 // Configure UART
mbed_official 52:a51c77007319 114 obj->baudrate = 9600;
mbed_official 52:a51c77007319 115 obj->databits = USART_WordLength_8b;
mbed_official 52:a51c77007319 116 obj->stopbits = USART_StopBits_1;
mbed_official 174:8bb9f3a33240 117 obj->parity = USART_Parity_No;
mbed_official 52:a51c77007319 118
mbed_official 208:4557f4bb2dd5 119 obj->pin_tx = tx;
mbed_official 208:4557f4bb2dd5 120 obj->pin_rx = rx;
mbed_official 208:4557f4bb2dd5 121
mbed_official 56:99eb381a3269 122 init_usart(obj);
mbed_official 52:a51c77007319 123
mbed_official 52:a51c77007319 124 // For stdio management
mbed_official 52:a51c77007319 125 if (obj->uart == STDIO_UART) {
mbed_official 52:a51c77007319 126 stdio_uart_inited = 1;
mbed_official 52:a51c77007319 127 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 52:a51c77007319 128 }
mbed_official 52:a51c77007319 129 }
mbed_official 52:a51c77007319 130
mbed_official 52:a51c77007319 131 void serial_free(serial_t *obj) {
mbed_official 208:4557f4bb2dd5 132 // Reset UART and disable clock
mbed_official 208:4557f4bb2dd5 133 if (obj->uart == UART_1) {
mbed_official 208:4557f4bb2dd5 134 RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, ENABLE);
mbed_official 208:4557f4bb2dd5 135 RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, DISABLE);
mbed_official 208:4557f4bb2dd5 136 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, DISABLE);
mbed_official 208:4557f4bb2dd5 137 }
mbed_official 208:4557f4bb2dd5 138 if (obj->uart == UART_2) {
mbed_official 208:4557f4bb2dd5 139 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, ENABLE);
mbed_official 208:4557f4bb2dd5 140 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, DISABLE);
mbed_official 208:4557f4bb2dd5 141 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, DISABLE);
mbed_official 208:4557f4bb2dd5 142 }
mbed_official 208:4557f4bb2dd5 143 if (obj->uart == UART_3) {
mbed_official 208:4557f4bb2dd5 144 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART3, ENABLE);
mbed_official 208:4557f4bb2dd5 145 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART3, DISABLE);
mbed_official 208:4557f4bb2dd5 146 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, DISABLE);
mbed_official 208:4557f4bb2dd5 147 }
mbed_official 208:4557f4bb2dd5 148
mbed_official 208:4557f4bb2dd5 149 // Configure GPIOs
mbed_official 208:4557f4bb2dd5 150 pin_function(obj->pin_tx, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0));
mbed_official 208:4557f4bb2dd5 151 pin_function(obj->pin_rx, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0));
mbed_official 208:4557f4bb2dd5 152
mbed_official 52:a51c77007319 153 serial_irq_ids[obj->index] = 0;
mbed_official 52:a51c77007319 154 }
mbed_official 52:a51c77007319 155
mbed_official 52:a51c77007319 156 void serial_baud(serial_t *obj, int baudrate) {
mbed_official 52:a51c77007319 157 obj->baudrate = baudrate;
mbed_official 56:99eb381a3269 158 init_usart(obj);
mbed_official 52:a51c77007319 159 }
mbed_official 52:a51c77007319 160
mbed_official 52:a51c77007319 161 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
mbed_official 52:a51c77007319 162 if (data_bits == 8) {
mbed_official 52:a51c77007319 163 obj->databits = USART_WordLength_8b;
mbed_official 174:8bb9f3a33240 164 } else {
mbed_official 52:a51c77007319 165 obj->databits = USART_WordLength_9b;
mbed_official 52:a51c77007319 166 }
mbed_official 52:a51c77007319 167
mbed_official 52:a51c77007319 168 switch (parity) {
mbed_official 174:8bb9f3a33240 169 case ParityOdd:
mbed_official 174:8bb9f3a33240 170 case ParityForced0:
mbed_official 174:8bb9f3a33240 171 obj->parity = USART_Parity_Odd;
mbed_official 174:8bb9f3a33240 172 break;
mbed_official 174:8bb9f3a33240 173 case ParityEven:
mbed_official 174:8bb9f3a33240 174 case ParityForced1:
mbed_official 174:8bb9f3a33240 175 obj->parity = USART_Parity_Even;
mbed_official 174:8bb9f3a33240 176 break;
mbed_official 174:8bb9f3a33240 177 default: // ParityNone
mbed_official 174:8bb9f3a33240 178 obj->parity = USART_Parity_No;
mbed_official 174:8bb9f3a33240 179 break;
mbed_official 52:a51c77007319 180 }
mbed_official 174:8bb9f3a33240 181
mbed_official 52:a51c77007319 182 if (stop_bits == 2) {
mbed_official 52:a51c77007319 183 obj->stopbits = USART_StopBits_2;
mbed_official 174:8bb9f3a33240 184 } else {
mbed_official 52:a51c77007319 185 obj->stopbits = USART_StopBits_1;
mbed_official 52:a51c77007319 186 }
mbed_official 52:a51c77007319 187
mbed_official 56:99eb381a3269 188 init_usart(obj);
mbed_official 52:a51c77007319 189 }
mbed_official 52:a51c77007319 190
mbed_official 52:a51c77007319 191 /******************************************************************************
mbed_official 52:a51c77007319 192 * INTERRUPTS HANDLING
mbed_official 52:a51c77007319 193 ******************************************************************************/
mbed_official 52:a51c77007319 194
mbed_official 52:a51c77007319 195 // not api
mbed_official 55:3b765ca737a5 196 static void uart_irq(USART_TypeDef* usart, int id) {
mbed_official 55:3b765ca737a5 197 if (serial_irq_ids[id] != 0) {
mbed_official 55:3b765ca737a5 198 if (USART_GetITStatus(usart, USART_IT_TC) != RESET) {
mbed_official 55:3b765ca737a5 199 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 55:3b765ca737a5 200 USART_ClearITPendingBit(usart, USART_IT_TC);
mbed_official 52:a51c77007319 201 }
mbed_official 52:a51c77007319 202 if (USART_GetITStatus(usart, USART_IT_RXNE) != RESET) {
mbed_official 55:3b765ca737a5 203 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 55:3b765ca737a5 204 USART_ClearITPendingBit(usart, USART_IT_RXNE);
mbed_official 52:a51c77007319 205 }
mbed_official 52:a51c77007319 206 }
mbed_official 52:a51c77007319 207 }
mbed_official 52:a51c77007319 208
mbed_official 167:d5744491c362 209 static void uart1_irq(void) {
mbed_official 167:d5744491c362 210 uart_irq((USART_TypeDef*)UART_1, 0);
mbed_official 167:d5744491c362 211 }
mbed_official 167:d5744491c362 212 static void uart2_irq(void) {
mbed_official 167:d5744491c362 213 uart_irq((USART_TypeDef*)UART_2, 1);
mbed_official 167:d5744491c362 214 }
mbed_official 167:d5744491c362 215 static void uart3_irq(void) {
mbed_official 167:d5744491c362 216 uart_irq((USART_TypeDef*)UART_3, 2);
mbed_official 167:d5744491c362 217 }
mbed_official 52:a51c77007319 218
mbed_official 52:a51c77007319 219 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
mbed_official 52:a51c77007319 220 irq_handler = handler;
mbed_official 52:a51c77007319 221 serial_irq_ids[obj->index] = id;
mbed_official 52:a51c77007319 222 }
mbed_official 52:a51c77007319 223
mbed_official 52:a51c77007319 224 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
mbed_official 52:a51c77007319 225 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 52:a51c77007319 226 uint32_t vector = 0;
mbed_official 52:a51c77007319 227 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 228
mbed_official 52:a51c77007319 229 if (obj->uart == UART_1) {
mbed_official 174:8bb9f3a33240 230 irq_n = USART1_IRQn;
mbed_official 174:8bb9f3a33240 231 vector = (uint32_t)&uart1_irq;
mbed_official 52:a51c77007319 232 }
mbed_official 174:8bb9f3a33240 233
mbed_official 52:a51c77007319 234 if (obj->uart == UART_2) {
mbed_official 174:8bb9f3a33240 235 irq_n = USART2_IRQn;
mbed_official 174:8bb9f3a33240 236 vector = (uint32_t)&uart2_irq;
mbed_official 52:a51c77007319 237 }
mbed_official 167:d5744491c362 238
mbed_official 167:d5744491c362 239 if (obj->uart == UART_3) {
mbed_official 174:8bb9f3a33240 240 irq_n = USART3_IRQn;
mbed_official 174:8bb9f3a33240 241 vector = (uint32_t)&uart3_irq;
mbed_official 167:d5744491c362 242 }
mbed_official 174:8bb9f3a33240 243
mbed_official 52:a51c77007319 244 if (enable) {
mbed_official 174:8bb9f3a33240 245
mbed_official 52:a51c77007319 246 if (irq == RxIrq) {
mbed_official 52:a51c77007319 247 USART_ITConfig(usart, USART_IT_RXNE, ENABLE);
mbed_official 174:8bb9f3a33240 248 } else { // TxIrq
mbed_official 55:3b765ca737a5 249 USART_ITConfig(usart, USART_IT_TC, ENABLE);
mbed_official 174:8bb9f3a33240 250 }
mbed_official 174:8bb9f3a33240 251
mbed_official 52:a51c77007319 252 NVIC_SetVector(irq_n, vector);
mbed_official 52:a51c77007319 253 NVIC_EnableIRQ(irq_n);
mbed_official 174:8bb9f3a33240 254
mbed_official 52:a51c77007319 255 } else { // disable
mbed_official 174:8bb9f3a33240 256
mbed_official 52:a51c77007319 257 int all_disabled = 0;
mbed_official 174:8bb9f3a33240 258
mbed_official 52:a51c77007319 259 if (irq == RxIrq) {
mbed_official 52:a51c77007319 260 USART_ITConfig(usart, USART_IT_RXNE, DISABLE);
mbed_official 52:a51c77007319 261 // Check if TxIrq is disabled too
mbed_official 52:a51c77007319 262 if ((usart->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 174:8bb9f3a33240 263 } else { // TxIrq
mbed_official 52:a51c77007319 264 USART_ITConfig(usart, USART_IT_TXE, DISABLE);
mbed_official 52:a51c77007319 265 // Check if RxIrq is disabled too
mbed_official 174:8bb9f3a33240 266 if ((usart->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 52:a51c77007319 267 }
mbed_official 174:8bb9f3a33240 268
mbed_official 52:a51c77007319 269 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 174:8bb9f3a33240 270
mbed_official 174:8bb9f3a33240 271 }
mbed_official 52:a51c77007319 272 }
mbed_official 52:a51c77007319 273
mbed_official 52:a51c77007319 274 /******************************************************************************
mbed_official 52:a51c77007319 275 * READ/WRITE
mbed_official 52:a51c77007319 276 ******************************************************************************/
mbed_official 52:a51c77007319 277
mbed_official 52:a51c77007319 278 int serial_getc(serial_t *obj) {
mbed_official 52:a51c77007319 279 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 280 while (!serial_readable(obj));
mbed_official 52:a51c77007319 281 return (int)(USART_ReceiveData(usart));
mbed_official 52:a51c77007319 282 }
mbed_official 52:a51c77007319 283
mbed_official 52:a51c77007319 284 void serial_putc(serial_t *obj, int c) {
mbed_official 52:a51c77007319 285 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 286 while (!serial_writable(obj));
mbed_official 52:a51c77007319 287 USART_SendData(usart, (uint16_t)c);
mbed_official 52:a51c77007319 288 }
mbed_official 52:a51c77007319 289
mbed_official 52:a51c77007319 290 int serial_readable(serial_t *obj) {
mbed_official 52:a51c77007319 291 int status;
mbed_official 52:a51c77007319 292 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 293 // Check if data is received
mbed_official 52:a51c77007319 294 status = ((USART_GetFlagStatus(usart, USART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 52:a51c77007319 295 return status;
mbed_official 52:a51c77007319 296 }
mbed_official 52:a51c77007319 297
mbed_official 52:a51c77007319 298 int serial_writable(serial_t *obj) {
mbed_official 52:a51c77007319 299 int status;
mbed_official 52:a51c77007319 300 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 301 // Check if data is transmitted
mbed_official 52:a51c77007319 302 status = ((USART_GetFlagStatus(usart, USART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 52:a51c77007319 303 return status;
mbed_official 52:a51c77007319 304 }
mbed_official 52:a51c77007319 305
mbed_official 52:a51c77007319 306 void serial_clear(serial_t *obj) {
mbed_official 52:a51c77007319 307 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 308 USART_ClearFlag(usart, USART_FLAG_TXE);
mbed_official 52:a51c77007319 309 USART_ClearFlag(usart, USART_FLAG_RXNE);
mbed_official 52:a51c77007319 310 }
mbed_official 52:a51c77007319 311
mbed_official 52:a51c77007319 312 void serial_pinout_tx(PinName tx) {
mbed_official 52:a51c77007319 313 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 52:a51c77007319 314 }
mbed_official 52:a51c77007319 315
mbed_official 52:a51c77007319 316 void serial_break_set(serial_t *obj) {
mbed_official 52:a51c77007319 317 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 318 USART_SendBreak(usart);
mbed_official 52:a51c77007319 319 }
mbed_official 52:a51c77007319 320
mbed_official 52:a51c77007319 321 void serial_break_clear(serial_t *obj) {
mbed_official 52:a51c77007319 322 }
mbed_official 174:8bb9f3a33240 323
mbed_official 174:8bb9f3a33240 324 #endif