shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_L152RE/serial_api.c@174:8bb9f3a33240, 2014-04-29 (annotated)

Committer:
mbed_official
Date:
Tue Apr 29 11:15:07 2014 +0100
Revision:
174:8bb9f3a33240
Parent:
129:0182c99221bc
Child:
215:83cf97a28428
Synchronized with git revision 5bf985ebc651a2c31cefabd9d62c51dc465ef60a



Full URL: https://github.com/mbedmicro/mbed/commit/5bf985ebc651a2c31cefabd9d62c51dc465ef60a/



[NUCLEO_L152RE/F103RB] Add LSE configuration for RTC

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 174:8bb9f3a33240 31
mbed_official 174:8bb9f3a33240 32 #if DEVICE_SERIAL
mbed_official 174:8bb9f3a33240 33
mbed_official 76:aeb1df146756 34 #include "cmsis.h"
mbed_official 76:aeb1df146756 35 #include "pinmap.h"
mbed_official 76:aeb1df146756 36 #include "error.h"
mbed_official 76:aeb1df146756 37 #include <string.h>
mbed_official 76:aeb1df146756 38
mbed_official 76:aeb1df146756 39 static const PinMap PinMap_UART_TX[] = {
mbed_official 129:0182c99221bc 40 {PA_2, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART2)},
mbed_official 76:aeb1df146756 41 {PA_9, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART1)},
mbed_official 118:b44c45162f28 42 {PB_6, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART1)},
mbed_official 118:b44c45162f28 43 {PB_10, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART3)},
mbed_official 174:8bb9f3a33240 44 // {PC_10, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART3)},
mbed_official 129:0182c99221bc 45 {PC_10, UART_4, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_UART4)},
mbed_official 129:0182c99221bc 46 {PC_12, UART_5, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_UART5)},
mbed_official 76:aeb1df146756 47 {NC, NC, 0}
mbed_official 76:aeb1df146756 48 };
mbed_official 76:aeb1df146756 49
mbed_official 76:aeb1df146756 50 static const PinMap PinMap_UART_RX[] = {
mbed_official 129:0182c99221bc 51 {PA_3, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART2)},
mbed_official 76:aeb1df146756 52 {PA_10, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART1)},
mbed_official 129:0182c99221bc 53 {PB_7, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART1)},
mbed_official 118:b44c45162f28 54 {PB_11, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART3)},
mbed_official 174:8bb9f3a33240 55 // {PC_11, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART3)},
mbed_official 118:b44c45162f28 56 {PC_11, UART_4, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_UART4)},
mbed_official 129:0182c99221bc 57 {PD_2, UART_5, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_UART5)},
mbed_official 76:aeb1df146756 58 {NC, NC, 0}
mbed_official 76:aeb1df146756 59 };
mbed_official 76:aeb1df146756 60
mbed_official 118:b44c45162f28 61 #define UART_NUM (5)
mbed_official 76:aeb1df146756 62
mbed_official 76:aeb1df146756 63 static uint32_t serial_irq_ids[UART_NUM] = {0};
mbed_official 76:aeb1df146756 64
mbed_official 76:aeb1df146756 65 static uart_irq_handler irq_handler;
mbed_official 76:aeb1df146756 66
mbed_official 76:aeb1df146756 67 int stdio_uart_inited = 0;
mbed_official 76:aeb1df146756 68 serial_t stdio_uart;
mbed_official 76:aeb1df146756 69
mbed_official 76:aeb1df146756 70 static void init_usart(serial_t *obj) {
mbed_official 76:aeb1df146756 71 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 72 USART_InitTypeDef USART_InitStructure;
mbed_official 174:8bb9f3a33240 73
mbed_official 76:aeb1df146756 74 USART_Cmd(usart, DISABLE);
mbed_official 76:aeb1df146756 75
mbed_official 129:0182c99221bc 76 USART_InitStructure.USART_BaudRate = obj->baudrate;
mbed_official 129:0182c99221bc 77 USART_InitStructure.USART_WordLength = obj->databits;
mbed_official 129:0182c99221bc 78 USART_InitStructure.USART_StopBits = obj->stopbits;
mbed_official 129:0182c99221bc 79 USART_InitStructure.USART_Parity = obj->parity;
mbed_official 76:aeb1df146756 80 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
mbed_official 129:0182c99221bc 81 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
mbed_official 76:aeb1df146756 82 USART_Init(usart, &USART_InitStructure);
mbed_official 174:8bb9f3a33240 83
mbed_official 76:aeb1df146756 84 USART_Cmd(usart, ENABLE);
mbed_official 76:aeb1df146756 85 }
mbed_official 76:aeb1df146756 86
mbed_official 174:8bb9f3a33240 87 void serial_init(serial_t *obj, PinName tx, PinName rx) {
mbed_official 76:aeb1df146756 88 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 76:aeb1df146756 89 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 76:aeb1df146756 90 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 174:8bb9f3a33240 91
mbed_official 76:aeb1df146756 92 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 76:aeb1df146756 93 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 76:aeb1df146756 94
mbed_official 76:aeb1df146756 95 if (obj->uart == (UARTName)NC) {
mbed_official 76:aeb1df146756 96 error("Serial pinout mapping failed");
mbed_official 76:aeb1df146756 97 }
mbed_official 76:aeb1df146756 98
mbed_official 76:aeb1df146756 99 // Enable USART clock
mbed_official 76:aeb1df146756 100 if (obj->uart == UART_1) {
mbed_official 174:8bb9f3a33240 101 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
mbed_official 76:aeb1df146756 102 }
mbed_official 76:aeb1df146756 103 if (obj->uart == UART_2) {
mbed_official 174:8bb9f3a33240 104 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
mbed_official 76:aeb1df146756 105 }
mbed_official 129:0182c99221bc 106 if (obj->uart == UART_3) {
mbed_official 174:8bb9f3a33240 107 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
mbed_official 118:b44c45162f28 108 }
mbed_official 129:0182c99221bc 109 if (obj->uart == UART_4) {
mbed_official 174:8bb9f3a33240 110 RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART4, ENABLE);
mbed_official 118:b44c45162f28 111 }
mbed_official 129:0182c99221bc 112 if (obj->uart == UART_5) {
mbed_official 174:8bb9f3a33240 113 RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART5, ENABLE);
mbed_official 118:b44c45162f28 114 }
mbed_official 129:0182c99221bc 115
mbed_official 76:aeb1df146756 116 // Configure the UART pins
mbed_official 76:aeb1df146756 117 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 76:aeb1df146756 118 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 76:aeb1df146756 119 pin_mode(tx, PullUp);
mbed_official 76:aeb1df146756 120 pin_mode(rx, PullUp);
mbed_official 76:aeb1df146756 121
mbed_official 76:aeb1df146756 122 // Configure UART
mbed_official 76:aeb1df146756 123 obj->baudrate = 9600;
mbed_official 76:aeb1df146756 124 obj->databits = USART_WordLength_8b;
mbed_official 76:aeb1df146756 125 obj->stopbits = USART_StopBits_1;
mbed_official 174:8bb9f3a33240 126 obj->parity = USART_Parity_No;
mbed_official 76:aeb1df146756 127
mbed_official 76:aeb1df146756 128 init_usart(obj);
mbed_official 76:aeb1df146756 129
mbed_official 76:aeb1df146756 130 // The index is used by irq
mbed_official 76:aeb1df146756 131 if (obj->uart == UART_1) obj->index = 0;
mbed_official 76:aeb1df146756 132 if (obj->uart == UART_2) obj->index = 1;
mbed_official 118:b44c45162f28 133 if (obj->uart == UART_3) obj->index = 2;
mbed_official 118:b44c45162f28 134 if (obj->uart == UART_4) obj->index = 3;
mbed_official 118:b44c45162f28 135 if (obj->uart == UART_5) obj->index = 4;
mbed_official 174:8bb9f3a33240 136
mbed_official 76:aeb1df146756 137 // For stdio management
mbed_official 76:aeb1df146756 138 if (obj->uart == STDIO_UART) {
mbed_official 76:aeb1df146756 139 stdio_uart_inited = 1;
mbed_official 76:aeb1df146756 140 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 174:8bb9f3a33240 141 }
mbed_official 76:aeb1df146756 142 }
mbed_official 76:aeb1df146756 143
mbed_official 76:aeb1df146756 144 void serial_free(serial_t *obj) {
mbed_official 76:aeb1df146756 145 serial_irq_ids[obj->index] = 0;
mbed_official 76:aeb1df146756 146 }
mbed_official 76:aeb1df146756 147
mbed_official 76:aeb1df146756 148 void serial_baud(serial_t *obj, int baudrate) {
mbed_official 76:aeb1df146756 149 obj->baudrate = baudrate;
mbed_official 76:aeb1df146756 150 init_usart(obj);
mbed_official 76:aeb1df146756 151 }
mbed_official 76:aeb1df146756 152
mbed_official 76:aeb1df146756 153 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
mbed_official 76:aeb1df146756 154 if (data_bits == 8) {
mbed_official 76:aeb1df146756 155 obj->databits = USART_WordLength_8b;
mbed_official 174:8bb9f3a33240 156 } else {
mbed_official 76:aeb1df146756 157 obj->databits = USART_WordLength_9b;
mbed_official 76:aeb1df146756 158 }
mbed_official 76:aeb1df146756 159
mbed_official 76:aeb1df146756 160 switch (parity) {
mbed_official 174:8bb9f3a33240 161 case ParityOdd:
mbed_official 174:8bb9f3a33240 162 case ParityForced0:
mbed_official 174:8bb9f3a33240 163 obj->parity = USART_Parity_Odd;
mbed_official 174:8bb9f3a33240 164 break;
mbed_official 174:8bb9f3a33240 165 case ParityEven:
mbed_official 174:8bb9f3a33240 166 case ParityForced1:
mbed_official 174:8bb9f3a33240 167 obj->parity = USART_Parity_Even;
mbed_official 174:8bb9f3a33240 168 break;
mbed_official 174:8bb9f3a33240 169 default: // ParityNone
mbed_official 174:8bb9f3a33240 170 obj->parity = USART_Parity_No;
mbed_official 174:8bb9f3a33240 171 break;
mbed_official 76:aeb1df146756 172 }
mbed_official 174:8bb9f3a33240 173
mbed_official 76:aeb1df146756 174 if (stop_bits == 2) {
mbed_official 76:aeb1df146756 175 obj->stopbits = USART_StopBits_2;
mbed_official 174:8bb9f3a33240 176 } else {
mbed_official 76:aeb1df146756 177 obj->stopbits = USART_StopBits_1;
mbed_official 76:aeb1df146756 178 }
mbed_official 76:aeb1df146756 179
mbed_official 76:aeb1df146756 180 init_usart(obj);
mbed_official 76:aeb1df146756 181 }
mbed_official 76:aeb1df146756 182
mbed_official 76:aeb1df146756 183 /******************************************************************************
mbed_official 76:aeb1df146756 184 * INTERRUPTS HANDLING
mbed_official 76:aeb1df146756 185 ******************************************************************************/
mbed_official 76:aeb1df146756 186
mbed_official 76:aeb1df146756 187 // not api
mbed_official 76:aeb1df146756 188 static void uart_irq(USART_TypeDef* usart, int id) {
mbed_official 76:aeb1df146756 189 if (serial_irq_ids[id] != 0) {
mbed_official 76:aeb1df146756 190 if (USART_GetITStatus(usart, USART_IT_TC) != RESET) {
mbed_official 76:aeb1df146756 191 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 76:aeb1df146756 192 USART_ClearITPendingBit(usart, USART_IT_TC);
mbed_official 76:aeb1df146756 193 }
mbed_official 76:aeb1df146756 194 if (USART_GetITStatus(usart, USART_IT_RXNE) != RESET) {
mbed_official 76:aeb1df146756 195 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 76:aeb1df146756 196 USART_ClearITPendingBit(usart, USART_IT_RXNE);
mbed_official 76:aeb1df146756 197 }
mbed_official 76:aeb1df146756 198 }
mbed_official 76:aeb1df146756 199 }
mbed_official 76:aeb1df146756 200
mbed_official 174:8bb9f3a33240 201 static void uart1_irq(void) {
mbed_official 174:8bb9f3a33240 202 uart_irq((USART_TypeDef*)UART_1, 0);
mbed_official 174:8bb9f3a33240 203 }
mbed_official 174:8bb9f3a33240 204 static void uart2_irq(void) {
mbed_official 174:8bb9f3a33240 205 uart_irq((USART_TypeDef*)UART_2, 1);
mbed_official 174:8bb9f3a33240 206 }
mbed_official 174:8bb9f3a33240 207 static void uart3_irq(void) {
mbed_official 174:8bb9f3a33240 208 uart_irq((USART_TypeDef*)UART_3, 2);
mbed_official 174:8bb9f3a33240 209 }
mbed_official 174:8bb9f3a33240 210 static void uart4_irq(void) {
mbed_official 174:8bb9f3a33240 211 uart_irq((USART_TypeDef*)UART_4, 3);
mbed_official 174:8bb9f3a33240 212 }
mbed_official 174:8bb9f3a33240 213 static void uart5_irq(void) {
mbed_official 174:8bb9f3a33240 214 uart_irq((USART_TypeDef*)UART_5, 4);
mbed_official 174:8bb9f3a33240 215 }
mbed_official 76:aeb1df146756 216
mbed_official 76:aeb1df146756 217 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
mbed_official 76:aeb1df146756 218 irq_handler = handler;
mbed_official 76:aeb1df146756 219 serial_irq_ids[obj->index] = id;
mbed_official 76:aeb1df146756 220 }
mbed_official 76:aeb1df146756 221
mbed_official 76:aeb1df146756 222 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
mbed_official 76:aeb1df146756 223 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 76:aeb1df146756 224 uint32_t vector = 0;
mbed_official 76:aeb1df146756 225 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 226
mbed_official 76:aeb1df146756 227 if (obj->uart == UART_1) {
mbed_official 174:8bb9f3a33240 228 irq_n = USART1_IRQn;
mbed_official 174:8bb9f3a33240 229 vector = (uint32_t)&uart1_irq;
mbed_official 76:aeb1df146756 230 }
mbed_official 174:8bb9f3a33240 231
mbed_official 76:aeb1df146756 232 if (obj->uart == UART_2) {
mbed_official 174:8bb9f3a33240 233 irq_n = USART2_IRQn;
mbed_official 174:8bb9f3a33240 234 vector = (uint32_t)&uart2_irq;
mbed_official 76:aeb1df146756 235 }
mbed_official 129:0182c99221bc 236
mbed_official 118:b44c45162f28 237 if (obj->uart == UART_3) {
mbed_official 174:8bb9f3a33240 238 irq_n = USART3_IRQn;
mbed_official 174:8bb9f3a33240 239 vector = (uint32_t)&uart3_irq;
mbed_official 118:b44c45162f28 240 }
mbed_official 129:0182c99221bc 241
mbed_official 118:b44c45162f28 242 if (obj->uart == UART_4) {
mbed_official 174:8bb9f3a33240 243 irq_n = UART4_IRQn;
mbed_official 174:8bb9f3a33240 244 vector = (uint32_t)&uart4_irq;
mbed_official 118:b44c45162f28 245 }
mbed_official 129:0182c99221bc 246
mbed_official 118:b44c45162f28 247 if (obj->uart == UART_5) {
mbed_official 174:8bb9f3a33240 248 irq_n = UART5_IRQn;
mbed_official 174:8bb9f3a33240 249 vector = (uint32_t)&uart5_irq;
mbed_official 118:b44c45162f28 250 }
mbed_official 174:8bb9f3a33240 251
mbed_official 76:aeb1df146756 252 if (enable) {
mbed_official 174:8bb9f3a33240 253
mbed_official 76:aeb1df146756 254 if (irq == RxIrq) {
mbed_official 76:aeb1df146756 255 USART_ITConfig(usart, USART_IT_RXNE, ENABLE);
mbed_official 174:8bb9f3a33240 256 } else { // TxIrq
mbed_official 76:aeb1df146756 257 USART_ITConfig(usart, USART_IT_TC, ENABLE);
mbed_official 174:8bb9f3a33240 258 }
mbed_official 174:8bb9f3a33240 259
mbed_official 76:aeb1df146756 260 NVIC_SetVector(irq_n, vector);
mbed_official 76:aeb1df146756 261 NVIC_EnableIRQ(irq_n);
mbed_official 174:8bb9f3a33240 262
mbed_official 76:aeb1df146756 263 } else { // disable
mbed_official 174:8bb9f3a33240 264
mbed_official 76:aeb1df146756 265 int all_disabled = 0;
mbed_official 174:8bb9f3a33240 266
mbed_official 76:aeb1df146756 267 if (irq == RxIrq) {
mbed_official 76:aeb1df146756 268 USART_ITConfig(usart, USART_IT_RXNE, DISABLE);
mbed_official 76:aeb1df146756 269 // Check if TxIrq is disabled too
mbed_official 76:aeb1df146756 270 if ((usart->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 174:8bb9f3a33240 271 } else { // TxIrq
mbed_official 76:aeb1df146756 272 USART_ITConfig(usart, USART_IT_TXE, DISABLE);
mbed_official 76:aeb1df146756 273 // Check if RxIrq is disabled too
mbed_official 174:8bb9f3a33240 274 if ((usart->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 76:aeb1df146756 275 }
mbed_official 174:8bb9f3a33240 276
mbed_official 76:aeb1df146756 277 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 174:8bb9f3a33240 278
mbed_official 174:8bb9f3a33240 279 }
mbed_official 76:aeb1df146756 280 }
mbed_official 76:aeb1df146756 281
mbed_official 76:aeb1df146756 282 /******************************************************************************
mbed_official 76:aeb1df146756 283 * READ/WRITE
mbed_official 76:aeb1df146756 284 ******************************************************************************/
mbed_official 76:aeb1df146756 285
mbed_official 76:aeb1df146756 286 int serial_getc(serial_t *obj) {
mbed_official 76:aeb1df146756 287 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 288 while (!serial_readable(obj));
mbed_official 76:aeb1df146756 289 return (int)(USART_ReceiveData(usart));
mbed_official 76:aeb1df146756 290 }
mbed_official 76:aeb1df146756 291
mbed_official 76:aeb1df146756 292 void serial_putc(serial_t *obj, int c) {
mbed_official 76:aeb1df146756 293 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 294 while (!serial_writable(obj));
mbed_official 76:aeb1df146756 295 USART_SendData(usart, (uint16_t)c);
mbed_official 76:aeb1df146756 296 }
mbed_official 76:aeb1df146756 297
mbed_official 76:aeb1df146756 298 int serial_readable(serial_t *obj) {
mbed_official 76:aeb1df146756 299 int status;
mbed_official 76:aeb1df146756 300 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 301 // Check if data is received
mbed_official 76:aeb1df146756 302 status = ((USART_GetFlagStatus(usart, USART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 76:aeb1df146756 303 return status;
mbed_official 76:aeb1df146756 304 }
mbed_official 76:aeb1df146756 305
mbed_official 76:aeb1df146756 306 int serial_writable(serial_t *obj) {
mbed_official 76:aeb1df146756 307 int status;
mbed_official 76:aeb1df146756 308 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 309 // Check if data is transmitted
mbed_official 76:aeb1df146756 310 status = ((USART_GetFlagStatus(usart, USART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 76:aeb1df146756 311 return status;
mbed_official 76:aeb1df146756 312 }
mbed_official 76:aeb1df146756 313
mbed_official 76:aeb1df146756 314 void serial_clear(serial_t *obj) {
mbed_official 76:aeb1df146756 315 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 316 USART_ClearFlag(usart, USART_FLAG_TXE);
mbed_official 76:aeb1df146756 317 USART_ClearFlag(usart, USART_FLAG_RXNE);
mbed_official 76:aeb1df146756 318 }
mbed_official 76:aeb1df146756 319
mbed_official 76:aeb1df146756 320 void serial_pinout_tx(PinName tx) {
mbed_official 76:aeb1df146756 321 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 76:aeb1df146756 322 }
mbed_official 76:aeb1df146756 323
mbed_official 76:aeb1df146756 324 void serial_break_set(serial_t *obj) {
mbed_official 76:aeb1df146756 325 USART_TypeDef *usart = (USART_TypeDef *)(obj->uart);
mbed_official 76:aeb1df146756 326 USART_SendBreak(usart);
mbed_official 76:aeb1df146756 327 }
mbed_official 76:aeb1df146756 328
mbed_official 76:aeb1df146756 329 void serial_break_clear(serial_t *obj) {
mbed_official 76:aeb1df146756 330 }
mbed_official 174:8bb9f3a33240 331
mbed_official 174:8bb9f3a33240 332 #endif