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mbed library sources

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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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@242:7074e42da0b2, 2014-06-27 (annotated)

Committer:
mbed_official
Date:
Fri Jun 27 07:30:09 2014 +0100
Revision:
242:7074e42da0b2
Parent:
227:7bd0639b8911
Child:
402:09075a3b15e3
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 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 227:7bd0639b8911 30 #include "mbed_assert.h"
mbed_official 52:a51c77007319 31 #include "serial_api.h"
mbed_official 174:8bb9f3a33240 32
mbed_official 174:8bb9f3a33240 33 #if DEVICE_SERIAL
mbed_official 174:8bb9f3a33240 34
mbed_official 52:a51c77007319 35 #include "cmsis.h"
mbed_official 52:a51c77007319 36 #include "pinmap.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 242:7074e42da0b2 77
mbed_official 242:7074e42da0b2 78 if (obj->pin_rx == NC) {
mbed_official 242:7074e42da0b2 79 USART_InitStructure.USART_Mode = USART_Mode_Tx;
mbed_official 242:7074e42da0b2 80 } else if (obj->pin_tx == NC) {
mbed_official 242:7074e42da0b2 81 USART_InitStructure.USART_Mode = USART_Mode_Rx;
mbed_official 242:7074e42da0b2 82 } else {
mbed_official 242:7074e42da0b2 83 USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
mbed_official 242:7074e42da0b2 84 }
mbed_official 242:7074e42da0b2 85
mbed_official 56:99eb381a3269 86 USART_Init(usart, &USART_InitStructure);
mbed_official 174:8bb9f3a33240 87
mbed_official 56:99eb381a3269 88 USART_Cmd(usart, ENABLE);
mbed_official 56:99eb381a3269 89 }
mbed_official 56:99eb381a3269 90
mbed_official 174:8bb9f3a33240 91 void serial_init(serial_t *obj, PinName tx, PinName rx) {
mbed_official 52:a51c77007319 92 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 52:a51c77007319 93 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 52:a51c77007319 94 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 174:8bb9f3a33240 95
mbed_official 52:a51c77007319 96 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 52:a51c77007319 97 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 227:7bd0639b8911 98 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 56:99eb381a3269 99
mbed_official 52:a51c77007319 100 // Enable USART clock
mbed_official 52:a51c77007319 101 if (obj->uart == UART_1) {
mbed_official 174:8bb9f3a33240 102 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
mbed_official 215:83cf97a28428 103 obj->index = 0;
mbed_official 52:a51c77007319 104 }
mbed_official 52:a51c77007319 105 if (obj->uart == UART_2) {
mbed_official 174:8bb9f3a33240 106 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
mbed_official 215:83cf97a28428 107 obj->index = 1;
mbed_official 52:a51c77007319 108 }
mbed_official 167:d5744491c362 109 if (obj->uart == UART_3) {
mbed_official 174:8bb9f3a33240 110 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
mbed_official 215:83cf97a28428 111 obj->index = 2;
mbed_official 167:d5744491c362 112 }
mbed_official 174:8bb9f3a33240 113
mbed_official 52:a51c77007319 114 // Configure the UART pins
mbed_official 52:a51c77007319 115 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 52:a51c77007319 116 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 52:a51c77007319 117
mbed_official 52:a51c77007319 118 // Configure UART
mbed_official 52:a51c77007319 119 obj->baudrate = 9600;
mbed_official 52:a51c77007319 120 obj->databits = USART_WordLength_8b;
mbed_official 52:a51c77007319 121 obj->stopbits = USART_StopBits_1;
mbed_official 174:8bb9f3a33240 122 obj->parity = USART_Parity_No;
mbed_official 52:a51c77007319 123
mbed_official 208:4557f4bb2dd5 124 obj->pin_tx = tx;
mbed_official 208:4557f4bb2dd5 125 obj->pin_rx = rx;
mbed_official 208:4557f4bb2dd5 126
mbed_official 56:99eb381a3269 127 init_usart(obj);
mbed_official 52:a51c77007319 128
mbed_official 52:a51c77007319 129 // For stdio management
mbed_official 52:a51c77007319 130 if (obj->uart == STDIO_UART) {
mbed_official 52:a51c77007319 131 stdio_uart_inited = 1;
mbed_official 52:a51c77007319 132 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 52:a51c77007319 133 }
mbed_official 52:a51c77007319 134 }
mbed_official 52:a51c77007319 135
mbed_official 52:a51c77007319 136 void serial_free(serial_t *obj) {
mbed_official 208:4557f4bb2dd5 137 // Reset UART and disable clock
mbed_official 208:4557f4bb2dd5 138 if (obj->uart == UART_1) {
mbed_official 208:4557f4bb2dd5 139 RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, ENABLE);
mbed_official 208:4557f4bb2dd5 140 RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, DISABLE);
mbed_official 208:4557f4bb2dd5 141 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, DISABLE);
mbed_official 208:4557f4bb2dd5 142 }
mbed_official 208:4557f4bb2dd5 143 if (obj->uart == UART_2) {
mbed_official 208:4557f4bb2dd5 144 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, ENABLE);
mbed_official 208:4557f4bb2dd5 145 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, DISABLE);
mbed_official 208:4557f4bb2dd5 146 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, DISABLE);
mbed_official 208:4557f4bb2dd5 147 }
mbed_official 208:4557f4bb2dd5 148 if (obj->uart == UART_3) {
mbed_official 208:4557f4bb2dd5 149 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART3, ENABLE);
mbed_official 208:4557f4bb2dd5 150 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART3, DISABLE);
mbed_official 208:4557f4bb2dd5 151 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, DISABLE);
mbed_official 208:4557f4bb2dd5 152 }
mbed_official 208:4557f4bb2dd5 153
mbed_official 208:4557f4bb2dd5 154 // Configure GPIOs
mbed_official 208:4557f4bb2dd5 155 pin_function(obj->pin_tx, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0));
mbed_official 208:4557f4bb2dd5 156 pin_function(obj->pin_rx, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0));
mbed_official 208:4557f4bb2dd5 157
mbed_official 52:a51c77007319 158 serial_irq_ids[obj->index] = 0;
mbed_official 52:a51c77007319 159 }
mbed_official 52:a51c77007319 160
mbed_official 52:a51c77007319 161 void serial_baud(serial_t *obj, int baudrate) {
mbed_official 52:a51c77007319 162 obj->baudrate = baudrate;
mbed_official 56:99eb381a3269 163 init_usart(obj);
mbed_official 52:a51c77007319 164 }
mbed_official 52:a51c77007319 165
mbed_official 52:a51c77007319 166 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
mbed_official 242:7074e42da0b2 167 if (data_bits == 9) {
mbed_official 242:7074e42da0b2 168 obj->databits = USART_WordLength_9b;
mbed_official 242:7074e42da0b2 169 } else {
mbed_official 52:a51c77007319 170 obj->databits = USART_WordLength_8b;
mbed_official 52:a51c77007319 171 }
mbed_official 52:a51c77007319 172
mbed_official 52:a51c77007319 173 switch (parity) {
mbed_official 174:8bb9f3a33240 174 case ParityOdd:
mbed_official 174:8bb9f3a33240 175 case ParityForced0:
mbed_official 174:8bb9f3a33240 176 obj->parity = USART_Parity_Odd;
mbed_official 174:8bb9f3a33240 177 break;
mbed_official 174:8bb9f3a33240 178 case ParityEven:
mbed_official 174:8bb9f3a33240 179 case ParityForced1:
mbed_official 174:8bb9f3a33240 180 obj->parity = USART_Parity_Even;
mbed_official 174:8bb9f3a33240 181 break;
mbed_official 174:8bb9f3a33240 182 default: // ParityNone
mbed_official 174:8bb9f3a33240 183 obj->parity = USART_Parity_No;
mbed_official 174:8bb9f3a33240 184 break;
mbed_official 52:a51c77007319 185 }
mbed_official 174:8bb9f3a33240 186
mbed_official 52:a51c77007319 187 if (stop_bits == 2) {
mbed_official 52:a51c77007319 188 obj->stopbits = USART_StopBits_2;
mbed_official 174:8bb9f3a33240 189 } else {
mbed_official 52:a51c77007319 190 obj->stopbits = USART_StopBits_1;
mbed_official 52:a51c77007319 191 }
mbed_official 52:a51c77007319 192
mbed_official 56:99eb381a3269 193 init_usart(obj);
mbed_official 52:a51c77007319 194 }
mbed_official 52:a51c77007319 195
mbed_official 52:a51c77007319 196 /******************************************************************************
mbed_official 52:a51c77007319 197 * INTERRUPTS HANDLING
mbed_official 52:a51c77007319 198 ******************************************************************************/
mbed_official 52:a51c77007319 199
mbed_official 52:a51c77007319 200 // not api
mbed_official 55:3b765ca737a5 201 static void uart_irq(USART_TypeDef* usart, int id) {
mbed_official 55:3b765ca737a5 202 if (serial_irq_ids[id] != 0) {
mbed_official 55:3b765ca737a5 203 if (USART_GetITStatus(usart, USART_IT_TC) != RESET) {
mbed_official 55:3b765ca737a5 204 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 55:3b765ca737a5 205 USART_ClearITPendingBit(usart, USART_IT_TC);
mbed_official 52:a51c77007319 206 }
mbed_official 52:a51c77007319 207 if (USART_GetITStatus(usart, USART_IT_RXNE) != RESET) {
mbed_official 55:3b765ca737a5 208 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 55:3b765ca737a5 209 USART_ClearITPendingBit(usart, USART_IT_RXNE);
mbed_official 52:a51c77007319 210 }
mbed_official 52:a51c77007319 211 }
mbed_official 52:a51c77007319 212 }
mbed_official 52:a51c77007319 213
mbed_official 167:d5744491c362 214 static void uart1_irq(void) {
mbed_official 167:d5744491c362 215 uart_irq((USART_TypeDef*)UART_1, 0);
mbed_official 167:d5744491c362 216 }
mbed_official 167:d5744491c362 217 static void uart2_irq(void) {
mbed_official 167:d5744491c362 218 uart_irq((USART_TypeDef*)UART_2, 1);
mbed_official 167:d5744491c362 219 }
mbed_official 167:d5744491c362 220 static void uart3_irq(void) {
mbed_official 167:d5744491c362 221 uart_irq((USART_TypeDef*)UART_3, 2);
mbed_official 167:d5744491c362 222 }
mbed_official 52:a51c77007319 223
mbed_official 52:a51c77007319 224 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
mbed_official 52:a51c77007319 225 irq_handler = handler;
mbed_official 52:a51c77007319 226 serial_irq_ids[obj->index] = id;
mbed_official 52:a51c77007319 227 }
mbed_official 52:a51c77007319 228
mbed_official 52:a51c77007319 229 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
mbed_official 52:a51c77007319 230 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 52:a51c77007319 231 uint32_t vector = 0;
mbed_official 52:a51c77007319 232 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 233
mbed_official 52:a51c77007319 234 if (obj->uart == UART_1) {
mbed_official 174:8bb9f3a33240 235 irq_n = USART1_IRQn;
mbed_official 174:8bb9f3a33240 236 vector = (uint32_t)&uart1_irq;
mbed_official 52:a51c77007319 237 }
mbed_official 174:8bb9f3a33240 238
mbed_official 52:a51c77007319 239 if (obj->uart == UART_2) {
mbed_official 174:8bb9f3a33240 240 irq_n = USART2_IRQn;
mbed_official 174:8bb9f3a33240 241 vector = (uint32_t)&uart2_irq;
mbed_official 52:a51c77007319 242 }
mbed_official 167:d5744491c362 243
mbed_official 167:d5744491c362 244 if (obj->uart == UART_3) {
mbed_official 174:8bb9f3a33240 245 irq_n = USART3_IRQn;
mbed_official 174:8bb9f3a33240 246 vector = (uint32_t)&uart3_irq;
mbed_official 167:d5744491c362 247 }
mbed_official 174:8bb9f3a33240 248
mbed_official 52:a51c77007319 249 if (enable) {
mbed_official 174:8bb9f3a33240 250
mbed_official 52:a51c77007319 251 if (irq == RxIrq) {
mbed_official 52:a51c77007319 252 USART_ITConfig(usart, USART_IT_RXNE, ENABLE);
mbed_official 174:8bb9f3a33240 253 } else { // TxIrq
mbed_official 55:3b765ca737a5 254 USART_ITConfig(usart, USART_IT_TC, ENABLE);
mbed_official 174:8bb9f3a33240 255 }
mbed_official 174:8bb9f3a33240 256
mbed_official 52:a51c77007319 257 NVIC_SetVector(irq_n, vector);
mbed_official 52:a51c77007319 258 NVIC_EnableIRQ(irq_n);
mbed_official 174:8bb9f3a33240 259
mbed_official 52:a51c77007319 260 } else { // disable
mbed_official 174:8bb9f3a33240 261
mbed_official 52:a51c77007319 262 int all_disabled = 0;
mbed_official 174:8bb9f3a33240 263
mbed_official 52:a51c77007319 264 if (irq == RxIrq) {
mbed_official 52:a51c77007319 265 USART_ITConfig(usart, USART_IT_RXNE, DISABLE);
mbed_official 52:a51c77007319 266 // Check if TxIrq is disabled too
mbed_official 52:a51c77007319 267 if ((usart->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 174:8bb9f3a33240 268 } else { // TxIrq
mbed_official 52:a51c77007319 269 USART_ITConfig(usart, USART_IT_TXE, DISABLE);
mbed_official 52:a51c77007319 270 // Check if RxIrq is disabled too
mbed_official 174:8bb9f3a33240 271 if ((usart->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 52:a51c77007319 272 }
mbed_official 174:8bb9f3a33240 273
mbed_official 52:a51c77007319 274 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 174:8bb9f3a33240 275
mbed_official 174:8bb9f3a33240 276 }
mbed_official 52:a51c77007319 277 }
mbed_official 52:a51c77007319 278
mbed_official 52:a51c77007319 279 /******************************************************************************
mbed_official 52:a51c77007319 280 * READ/WRITE
mbed_official 52:a51c77007319 281 ******************************************************************************/
mbed_official 52:a51c77007319 282
mbed_official 52:a51c77007319 283 int serial_getc(serial_t *obj) {
mbed_official 52:a51c77007319 284 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 285 while (!serial_readable(obj));
mbed_official 52:a51c77007319 286 return (int)(USART_ReceiveData(usart));
mbed_official 52:a51c77007319 287 }
mbed_official 52:a51c77007319 288
mbed_official 52:a51c77007319 289 void serial_putc(serial_t *obj, int c) {
mbed_official 52:a51c77007319 290 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 291 while (!serial_writable(obj));
mbed_official 52:a51c77007319 292 USART_SendData(usart, (uint16_t)c);
mbed_official 52:a51c77007319 293 }
mbed_official 52:a51c77007319 294
mbed_official 52:a51c77007319 295 int serial_readable(serial_t *obj) {
mbed_official 52:a51c77007319 296 int status;
mbed_official 52:a51c77007319 297 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 298 // Check if data is received
mbed_official 52:a51c77007319 299 status = ((USART_GetFlagStatus(usart, USART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 52:a51c77007319 300 return status;
mbed_official 52:a51c77007319 301 }
mbed_official 52:a51c77007319 302
mbed_official 52:a51c77007319 303 int serial_writable(serial_t *obj) {
mbed_official 52:a51c77007319 304 int status;
mbed_official 52:a51c77007319 305 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 306 // Check if data is transmitted
mbed_official 52:a51c77007319 307 status = ((USART_GetFlagStatus(usart, USART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 52:a51c77007319 308 return status;
mbed_official 52:a51c77007319 309 }
mbed_official 52:a51c77007319 310
mbed_official 52:a51c77007319 311 void serial_clear(serial_t *obj) {
mbed_official 52:a51c77007319 312 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 313 USART_ClearFlag(usart, USART_FLAG_TXE);
mbed_official 52:a51c77007319 314 USART_ClearFlag(usart, USART_FLAG_RXNE);
mbed_official 52:a51c77007319 315 }
mbed_official 52:a51c77007319 316
mbed_official 52:a51c77007319 317 void serial_pinout_tx(PinName tx) {
mbed_official 52:a51c77007319 318 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 52:a51c77007319 319 }
mbed_official 52:a51c77007319 320
mbed_official 52:a51c77007319 321 void serial_break_set(serial_t *obj) {
mbed_official 52:a51c77007319 322 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 323 USART_SendBreak(usart);
mbed_official 52:a51c77007319 324 }
mbed_official 52:a51c77007319 325
mbed_official 52:a51c77007319 326 void serial_break_clear(serial_t *obj) {
mbed_official 52:a51c77007319 327 }
mbed_official 174:8bb9f3a33240 328
mbed_official 174:8bb9f3a33240 329 #endif