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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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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@402:09075a3b15e3, 2014-11-14 (annotated)

Committer:
mbed_official
Date:
Fri Nov 14 09:00:07 2014 +0000
Revision:
402:09075a3b15e3
Parent:
242:7074e42da0b2
Child:
414:4ec4c5b614b0
Synchronized with git revision dffeedc96e731e30785ca4a7842fb9769412bea1



Full URL: https://github.com/mbedmicro/mbed/commit/dffeedc96e731e30785ca4a7842fb9769412bea1/



Targets: add USBTX and USBRX pin definitions for targets that don't provide them

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 402:09075a3b15e3 66 static void init_usart(serial_t *obj)
mbed_official 402:09075a3b15e3 67 {
mbed_official 56:99eb381a3269 68 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 69 USART_InitTypeDef USART_InitStructure;
mbed_official 174:8bb9f3a33240 70
mbed_official 56:99eb381a3269 71 USART_Cmd(usart, DISABLE);
mbed_official 56:99eb381a3269 72
mbed_official 167:d5744491c362 73 USART_InitStructure.USART_BaudRate = obj->baudrate;
mbed_official 167:d5744491c362 74 USART_InitStructure.USART_WordLength = obj->databits;
mbed_official 167:d5744491c362 75 USART_InitStructure.USART_StopBits = obj->stopbits;
mbed_official 167:d5744491c362 76 USART_InitStructure.USART_Parity = obj->parity;
mbed_official 56:99eb381a3269 77 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
mbed_official 242:7074e42da0b2 78
mbed_official 242:7074e42da0b2 79 if (obj->pin_rx == NC) {
mbed_official 242:7074e42da0b2 80 USART_InitStructure.USART_Mode = USART_Mode_Tx;
mbed_official 242:7074e42da0b2 81 } else if (obj->pin_tx == NC) {
mbed_official 242:7074e42da0b2 82 USART_InitStructure.USART_Mode = USART_Mode_Rx;
mbed_official 242:7074e42da0b2 83 } else {
mbed_official 242:7074e42da0b2 84 USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
mbed_official 242:7074e42da0b2 85 }
mbed_official 242:7074e42da0b2 86
mbed_official 56:99eb381a3269 87 USART_Init(usart, &USART_InitStructure);
mbed_official 174:8bb9f3a33240 88
mbed_official 56:99eb381a3269 89 USART_Cmd(usart, ENABLE);
mbed_official 56:99eb381a3269 90 }
mbed_official 56:99eb381a3269 91
mbed_official 402:09075a3b15e3 92 void serial_init(serial_t *obj, PinName tx, PinName rx)
mbed_official 402:09075a3b15e3 93 {
mbed_official 52:a51c77007319 94 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 52:a51c77007319 95 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 52:a51c77007319 96 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 174:8bb9f3a33240 97
mbed_official 52:a51c77007319 98 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 52:a51c77007319 99 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 227:7bd0639b8911 100 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 56:99eb381a3269 101
mbed_official 52:a51c77007319 102 // Enable USART clock
mbed_official 52:a51c77007319 103 if (obj->uart == UART_1) {
mbed_official 174:8bb9f3a33240 104 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
mbed_official 215:83cf97a28428 105 obj->index = 0;
mbed_official 52:a51c77007319 106 }
mbed_official 52:a51c77007319 107 if (obj->uart == UART_2) {
mbed_official 174:8bb9f3a33240 108 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
mbed_official 215:83cf97a28428 109 obj->index = 1;
mbed_official 52:a51c77007319 110 }
mbed_official 167:d5744491c362 111 if (obj->uart == UART_3) {
mbed_official 174:8bb9f3a33240 112 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
mbed_official 215:83cf97a28428 113 obj->index = 2;
mbed_official 167:d5744491c362 114 }
mbed_official 174:8bb9f3a33240 115
mbed_official 52:a51c77007319 116 // Configure the UART pins
mbed_official 52:a51c77007319 117 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 52:a51c77007319 118 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 52:a51c77007319 119
mbed_official 52:a51c77007319 120 // Configure UART
mbed_official 52:a51c77007319 121 obj->baudrate = 9600;
mbed_official 52:a51c77007319 122 obj->databits = USART_WordLength_8b;
mbed_official 52:a51c77007319 123 obj->stopbits = USART_StopBits_1;
mbed_official 174:8bb9f3a33240 124 obj->parity = USART_Parity_No;
mbed_official 52:a51c77007319 125
mbed_official 208:4557f4bb2dd5 126 obj->pin_tx = tx;
mbed_official 208:4557f4bb2dd5 127 obj->pin_rx = rx;
mbed_official 208:4557f4bb2dd5 128
mbed_official 56:99eb381a3269 129 init_usart(obj);
mbed_official 52:a51c77007319 130
mbed_official 52:a51c77007319 131 // For stdio management
mbed_official 52:a51c77007319 132 if (obj->uart == STDIO_UART) {
mbed_official 52:a51c77007319 133 stdio_uart_inited = 1;
mbed_official 52:a51c77007319 134 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 52:a51c77007319 135 }
mbed_official 52:a51c77007319 136 }
mbed_official 52:a51c77007319 137
mbed_official 402:09075a3b15e3 138 void serial_free(serial_t *obj)
mbed_official 402:09075a3b15e3 139 {
mbed_official 208:4557f4bb2dd5 140 // Reset UART and disable clock
mbed_official 208:4557f4bb2dd5 141 if (obj->uart == UART_1) {
mbed_official 208:4557f4bb2dd5 142 RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, ENABLE);
mbed_official 208:4557f4bb2dd5 143 RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1, DISABLE);
mbed_official 208:4557f4bb2dd5 144 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, DISABLE);
mbed_official 208:4557f4bb2dd5 145 }
mbed_official 208:4557f4bb2dd5 146 if (obj->uart == UART_2) {
mbed_official 208:4557f4bb2dd5 147 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, ENABLE);
mbed_official 208:4557f4bb2dd5 148 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2, DISABLE);
mbed_official 208:4557f4bb2dd5 149 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, DISABLE);
mbed_official 208:4557f4bb2dd5 150 }
mbed_official 208:4557f4bb2dd5 151 if (obj->uart == UART_3) {
mbed_official 208:4557f4bb2dd5 152 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART3, ENABLE);
mbed_official 208:4557f4bb2dd5 153 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART3, DISABLE);
mbed_official 208:4557f4bb2dd5 154 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, DISABLE);
mbed_official 208:4557f4bb2dd5 155 }
mbed_official 208:4557f4bb2dd5 156
mbed_official 208:4557f4bb2dd5 157 // Configure GPIOs
mbed_official 208:4557f4bb2dd5 158 pin_function(obj->pin_tx, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0));
mbed_official 208:4557f4bb2dd5 159 pin_function(obj->pin_rx, STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0));
mbed_official 208:4557f4bb2dd5 160
mbed_official 52:a51c77007319 161 serial_irq_ids[obj->index] = 0;
mbed_official 52:a51c77007319 162 }
mbed_official 52:a51c77007319 163
mbed_official 402:09075a3b15e3 164 void serial_baud(serial_t *obj, int baudrate)
mbed_official 402:09075a3b15e3 165 {
mbed_official 52:a51c77007319 166 obj->baudrate = baudrate;
mbed_official 56:99eb381a3269 167 init_usart(obj);
mbed_official 52:a51c77007319 168 }
mbed_official 52:a51c77007319 169
mbed_official 402:09075a3b15e3 170 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
mbed_official 402:09075a3b15e3 171 {
mbed_official 242:7074e42da0b2 172 if (data_bits == 9) {
mbed_official 242:7074e42da0b2 173 obj->databits = USART_WordLength_9b;
mbed_official 242:7074e42da0b2 174 } else {
mbed_official 52:a51c77007319 175 obj->databits = USART_WordLength_8b;
mbed_official 52:a51c77007319 176 }
mbed_official 52:a51c77007319 177
mbed_official 52:a51c77007319 178 switch (parity) {
mbed_official 174:8bb9f3a33240 179 case ParityOdd:
mbed_official 174:8bb9f3a33240 180 case ParityForced0:
mbed_official 174:8bb9f3a33240 181 obj->parity = USART_Parity_Odd;
mbed_official 174:8bb9f3a33240 182 break;
mbed_official 174:8bb9f3a33240 183 case ParityEven:
mbed_official 174:8bb9f3a33240 184 case ParityForced1:
mbed_official 174:8bb9f3a33240 185 obj->parity = USART_Parity_Even;
mbed_official 174:8bb9f3a33240 186 break;
mbed_official 174:8bb9f3a33240 187 default: // ParityNone
mbed_official 174:8bb9f3a33240 188 obj->parity = USART_Parity_No;
mbed_official 174:8bb9f3a33240 189 break;
mbed_official 52:a51c77007319 190 }
mbed_official 174:8bb9f3a33240 191
mbed_official 52:a51c77007319 192 if (stop_bits == 2) {
mbed_official 52:a51c77007319 193 obj->stopbits = USART_StopBits_2;
mbed_official 174:8bb9f3a33240 194 } else {
mbed_official 52:a51c77007319 195 obj->stopbits = USART_StopBits_1;
mbed_official 52:a51c77007319 196 }
mbed_official 52:a51c77007319 197
mbed_official 56:99eb381a3269 198 init_usart(obj);
mbed_official 52:a51c77007319 199 }
mbed_official 52:a51c77007319 200
mbed_official 52:a51c77007319 201 /******************************************************************************
mbed_official 52:a51c77007319 202 * INTERRUPTS HANDLING
mbed_official 52:a51c77007319 203 ******************************************************************************/
mbed_official 52:a51c77007319 204
mbed_official 52:a51c77007319 205 // not api
mbed_official 402:09075a3b15e3 206 static void uart_irq(USART_TypeDef* usart, int id)
mbed_official 402:09075a3b15e3 207 {
mbed_official 55:3b765ca737a5 208 if (serial_irq_ids[id] != 0) {
mbed_official 55:3b765ca737a5 209 if (USART_GetITStatus(usart, USART_IT_TC) != RESET) {
mbed_official 55:3b765ca737a5 210 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 55:3b765ca737a5 211 USART_ClearITPendingBit(usart, USART_IT_TC);
mbed_official 52:a51c77007319 212 }
mbed_official 52:a51c77007319 213 if (USART_GetITStatus(usart, USART_IT_RXNE) != RESET) {
mbed_official 55:3b765ca737a5 214 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 55:3b765ca737a5 215 USART_ClearITPendingBit(usart, USART_IT_RXNE);
mbed_official 52:a51c77007319 216 }
mbed_official 52:a51c77007319 217 }
mbed_official 52:a51c77007319 218 }
mbed_official 52:a51c77007319 219
mbed_official 402:09075a3b15e3 220 static void uart1_irq(void)
mbed_official 402:09075a3b15e3 221 {
mbed_official 167:d5744491c362 222 uart_irq((USART_TypeDef*)UART_1, 0);
mbed_official 167:d5744491c362 223 }
mbed_official 402:09075a3b15e3 224 static void uart2_irq(void)
mbed_official 402:09075a3b15e3 225 {
mbed_official 167:d5744491c362 226 uart_irq((USART_TypeDef*)UART_2, 1);
mbed_official 167:d5744491c362 227 }
mbed_official 402:09075a3b15e3 228 static void uart3_irq(void)
mbed_official 402:09075a3b15e3 229 {
mbed_official 167:d5744491c362 230 uart_irq((USART_TypeDef*)UART_3, 2);
mbed_official 167:d5744491c362 231 }
mbed_official 52:a51c77007319 232
mbed_official 402:09075a3b15e3 233 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
mbed_official 402:09075a3b15e3 234 {
mbed_official 52:a51c77007319 235 irq_handler = handler;
mbed_official 52:a51c77007319 236 serial_irq_ids[obj->index] = id;
mbed_official 52:a51c77007319 237 }
mbed_official 52:a51c77007319 238
mbed_official 402:09075a3b15e3 239 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
mbed_official 402:09075a3b15e3 240 {
mbed_official 52:a51c77007319 241 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 52:a51c77007319 242 uint32_t vector = 0;
mbed_official 52:a51c77007319 243 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 244
mbed_official 52:a51c77007319 245 if (obj->uart == UART_1) {
mbed_official 174:8bb9f3a33240 246 irq_n = USART1_IRQn;
mbed_official 174:8bb9f3a33240 247 vector = (uint32_t)&uart1_irq;
mbed_official 52:a51c77007319 248 }
mbed_official 174:8bb9f3a33240 249
mbed_official 52:a51c77007319 250 if (obj->uart == UART_2) {
mbed_official 174:8bb9f3a33240 251 irq_n = USART2_IRQn;
mbed_official 174:8bb9f3a33240 252 vector = (uint32_t)&uart2_irq;
mbed_official 52:a51c77007319 253 }
mbed_official 167:d5744491c362 254
mbed_official 167:d5744491c362 255 if (obj->uart == UART_3) {
mbed_official 174:8bb9f3a33240 256 irq_n = USART3_IRQn;
mbed_official 174:8bb9f3a33240 257 vector = (uint32_t)&uart3_irq;
mbed_official 167:d5744491c362 258 }
mbed_official 174:8bb9f3a33240 259
mbed_official 52:a51c77007319 260 if (enable) {
mbed_official 174:8bb9f3a33240 261
mbed_official 52:a51c77007319 262 if (irq == RxIrq) {
mbed_official 52:a51c77007319 263 USART_ITConfig(usart, USART_IT_RXNE, ENABLE);
mbed_official 174:8bb9f3a33240 264 } else { // TxIrq
mbed_official 55:3b765ca737a5 265 USART_ITConfig(usart, USART_IT_TC, ENABLE);
mbed_official 174:8bb9f3a33240 266 }
mbed_official 174:8bb9f3a33240 267
mbed_official 52:a51c77007319 268 NVIC_SetVector(irq_n, vector);
mbed_official 52:a51c77007319 269 NVIC_EnableIRQ(irq_n);
mbed_official 174:8bb9f3a33240 270
mbed_official 52:a51c77007319 271 } else { // disable
mbed_official 174:8bb9f3a33240 272
mbed_official 52:a51c77007319 273 int all_disabled = 0;
mbed_official 174:8bb9f3a33240 274
mbed_official 52:a51c77007319 275 if (irq == RxIrq) {
mbed_official 52:a51c77007319 276 USART_ITConfig(usart, USART_IT_RXNE, DISABLE);
mbed_official 52:a51c77007319 277 // Check if TxIrq is disabled too
mbed_official 52:a51c77007319 278 if ((usart->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 174:8bb9f3a33240 279 } else { // TxIrq
mbed_official 52:a51c77007319 280 USART_ITConfig(usart, USART_IT_TXE, DISABLE);
mbed_official 52:a51c77007319 281 // Check if RxIrq is disabled too
mbed_official 174:8bb9f3a33240 282 if ((usart->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 52:a51c77007319 283 }
mbed_official 174:8bb9f3a33240 284
mbed_official 52:a51c77007319 285 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 174:8bb9f3a33240 286
mbed_official 174:8bb9f3a33240 287 }
mbed_official 52:a51c77007319 288 }
mbed_official 52:a51c77007319 289
mbed_official 52:a51c77007319 290 /******************************************************************************
mbed_official 52:a51c77007319 291 * READ/WRITE
mbed_official 52:a51c77007319 292 ******************************************************************************/
mbed_official 52:a51c77007319 293
mbed_official 402:09075a3b15e3 294 int serial_getc(serial_t *obj)
mbed_official 402:09075a3b15e3 295 {
mbed_official 52:a51c77007319 296 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 297 while (!serial_readable(obj));
mbed_official 52:a51c77007319 298 return (int)(USART_ReceiveData(usart));
mbed_official 52:a51c77007319 299 }
mbed_official 52:a51c77007319 300
mbed_official 402:09075a3b15e3 301 void serial_putc(serial_t *obj, int c)
mbed_official 402:09075a3b15e3 302 {
mbed_official 52:a51c77007319 303 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 304 while (!serial_writable(obj));
mbed_official 52:a51c77007319 305 USART_SendData(usart, (uint16_t)c);
mbed_official 52:a51c77007319 306 }
mbed_official 52:a51c77007319 307
mbed_official 402:09075a3b15e3 308 int serial_readable(serial_t *obj)
mbed_official 402:09075a3b15e3 309 {
mbed_official 52:a51c77007319 310 int status;
mbed_official 52:a51c77007319 311 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 312 // Check if data is received
mbed_official 52:a51c77007319 313 status = ((USART_GetFlagStatus(usart, USART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 52:a51c77007319 314 return status;
mbed_official 52:a51c77007319 315 }
mbed_official 52:a51c77007319 316
mbed_official 402:09075a3b15e3 317 int serial_writable(serial_t *obj)
mbed_official 402:09075a3b15e3 318 {
mbed_official 52:a51c77007319 319 int status;
mbed_official 52:a51c77007319 320 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 321 // Check if data is transmitted
mbed_official 52:a51c77007319 322 status = ((USART_GetFlagStatus(usart, USART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 52:a51c77007319 323 return status;
mbed_official 52:a51c77007319 324 }
mbed_official 52:a51c77007319 325
mbed_official 402:09075a3b15e3 326 void serial_clear(serial_t *obj)
mbed_official 402:09075a3b15e3 327 {
mbed_official 52:a51c77007319 328 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 329 USART_ClearFlag(usart, USART_FLAG_TXE);
mbed_official 52:a51c77007319 330 USART_ClearFlag(usart, USART_FLAG_RXNE);
mbed_official 52:a51c77007319 331 }
mbed_official 52:a51c77007319 332
mbed_official 402:09075a3b15e3 333 void serial_pinout_tx(PinName tx)
mbed_official 402:09075a3b15e3 334 {
mbed_official 52:a51c77007319 335 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 52:a51c77007319 336 }
mbed_official 52:a51c77007319 337
mbed_official 402:09075a3b15e3 338 void serial_break_set(serial_t *obj)
mbed_official 402:09075a3b15e3 339 {
mbed_official 52:a51c77007319 340 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 52:a51c77007319 341 USART_SendBreak(usart);
mbed_official 52:a51c77007319 342 }
mbed_official 52:a51c77007319 343
mbed_official 402:09075a3b15e3 344 void serial_break_clear(serial_t *obj)
mbed_official 402:09075a3b15e3 345 {
mbed_official 52:a51c77007319 346 }
mbed_official 174:8bb9f3a33240 347
mbed_official 174:8bb9f3a33240 348 #endif