Ken Todotani / mbed-src

mbed library sources

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targets/hal/TARGET_STM/TARGET_STM32F407VG/serial_api.c@308:59cc78a25982, 2014-09-05 (annotated)

Committer:
todotani
Date:
Fri Sep 05 14:20:33 2014 +0000
Revision:
308:59cc78a25982
Parent:
296:ec1b66a3d094 
BLE_Health_Thermometer for mbed HRM1017 with BLE library 0.1.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 133:d4dda5c437f0 1 /* mbed Microcontroller Library
mbed_official 133:d4dda5c437f0 2 *******************************************************************************
mbed_official 133:d4dda5c437f0 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 133:d4dda5c437f0 4 * All rights reserved.
mbed_official 133:d4dda5c437f0 5 *
mbed_official 133:d4dda5c437f0 6 * Redistribution and use in source and binary forms, with or without
mbed_official 133:d4dda5c437f0 7 * modification, are permitted provided that the following conditions are met:
mbed_official 133:d4dda5c437f0 8 *
mbed_official 133:d4dda5c437f0 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 133:d4dda5c437f0 10 * this list of conditions and the following disclaimer.
mbed_official 133:d4dda5c437f0 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 133:d4dda5c437f0 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 133:d4dda5c437f0 13 * and/or other materials provided with the distribution.
mbed_official 133:d4dda5c437f0 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 133:d4dda5c437f0 15 * may be used to endorse or promote products derived from this software
mbed_official 133:d4dda5c437f0 16 * without specific prior written permission.
mbed_official 133:d4dda5c437f0 17 *
mbed_official 133:d4dda5c437f0 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 133:d4dda5c437f0 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 133:d4dda5c437f0 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 133:d4dda5c437f0 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 133:d4dda5c437f0 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 133:d4dda5c437f0 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 133:d4dda5c437f0 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 133:d4dda5c437f0 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 133:d4dda5c437f0 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 133:d4dda5c437f0 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 133:d4dda5c437f0 28 *******************************************************************************
mbed_official 133:d4dda5c437f0 29 */
mbed_official 242:7074e42da0b2 30 #include "mbed_assert.h"
mbed_official 133:d4dda5c437f0 31 #include "serial_api.h"
mbed_official 242:7074e42da0b2 32
mbed_official 242:7074e42da0b2 33 #if DEVICE_SERIAL
mbed_official 242:7074e42da0b2 34
mbed_official 133:d4dda5c437f0 35 #include "cmsis.h"
mbed_official 133:d4dda5c437f0 36 #include "pinmap.h"
mbed_official 133:d4dda5c437f0 37 #include <string.h>
mbed_official 133:d4dda5c437f0 38
mbed_official 133:d4dda5c437f0 39 static const PinMap PinMap_UART_TX[] = {
mbed_official 133:d4dda5c437f0 40 {PA_2, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
mbed_official 133:d4dda5c437f0 41 {PA_9, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 133:d4dda5c437f0 42 {PA_11, UART_6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
mbed_official 133:d4dda5c437f0 43 {PB_6, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 133:d4dda5c437f0 44 {PC_6, UART_6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
mbed_official 133:d4dda5c437f0 45 {NC, NC, 0}
mbed_official 133:d4dda5c437f0 46 };
mbed_official 133:d4dda5c437f0 47
mbed_official 133:d4dda5c437f0 48 static const PinMap PinMap_UART_RX[] = {
mbed_official 133:d4dda5c437f0 49 {PA_3, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
mbed_official 133:d4dda5c437f0 50 {PA_10, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 133:d4dda5c437f0 51 {PA_12, UART_6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
mbed_official 133:d4dda5c437f0 52 {PB_7, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 133:d4dda5c437f0 53 {PC_7, UART_6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
mbed_official 133:d4dda5c437f0 54 {NC, NC, 0}
mbed_official 133:d4dda5c437f0 55 };
mbed_official 133:d4dda5c437f0 56
mbed_official 133:d4dda5c437f0 57 #define UART_NUM (3)
mbed_official 133:d4dda5c437f0 58
mbed_official 242:7074e42da0b2 59 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0};
mbed_official 133:d4dda5c437f0 60
mbed_official 133:d4dda5c437f0 61 static uart_irq_handler irq_handler;
mbed_official 133:d4dda5c437f0 62
mbed_official 133:d4dda5c437f0 63 UART_HandleTypeDef UartHandle;
mbed_official 133:d4dda5c437f0 64
mbed_official 133:d4dda5c437f0 65 int stdio_uart_inited = 0;
mbed_official 133:d4dda5c437f0 66 serial_t stdio_uart;
mbed_official 133:d4dda5c437f0 67
mbed_official 133:d4dda5c437f0 68 static void init_uart(serial_t *obj) {
mbed_official 133:d4dda5c437f0 69 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 133:d4dda5c437f0 70
mbed_official 133:d4dda5c437f0 71 UartHandle.Init.BaudRate = obj->baudrate;
mbed_official 133:d4dda5c437f0 72 UartHandle.Init.WordLength = obj->databits;
mbed_official 133:d4dda5c437f0 73 UartHandle.Init.StopBits = obj->stopbits;
mbed_official 133:d4dda5c437f0 74 UartHandle.Init.Parity = obj->parity;
mbed_official 133:d4dda5c437f0 75 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
mbed_official 133:d4dda5c437f0 76 UartHandle.Init.Mode = UART_MODE_TX_RX;
mbed_official 133:d4dda5c437f0 77
mbed_official 227:7bd0639b8911 78 HAL_UART_Init(&UartHandle);
mbed_official 133:d4dda5c437f0 79 }
mbed_official 133:d4dda5c437f0 80
mbed_official 227:7bd0639b8911 81 void serial_init(serial_t *obj, PinName tx, PinName rx) {
mbed_official 133:d4dda5c437f0 82 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 133:d4dda5c437f0 83 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 133:d4dda5c437f0 84 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 133:d4dda5c437f0 85
mbed_official 133:d4dda5c437f0 86 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 133:d4dda5c437f0 87 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 227:7bd0639b8911 88 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 133:d4dda5c437f0 89
mbed_official 133:d4dda5c437f0 90 // Enable USART clock
mbed_official 133:d4dda5c437f0 91 if (obj->uart == UART_1) {
mbed_official 133:d4dda5c437f0 92 __USART1_CLK_ENABLE();
mbed_official 242:7074e42da0b2 93 obj->index = 0;
mbed_official 133:d4dda5c437f0 94 }
mbed_official 133:d4dda5c437f0 95 if (obj->uart == UART_2) {
mbed_official 133:d4dda5c437f0 96 __USART2_CLK_ENABLE();
mbed_official 242:7074e42da0b2 97 obj->index = 1;
mbed_official 133:d4dda5c437f0 98 }
mbed_official 133:d4dda5c437f0 99 if (obj->uart == UART_6) {
mbed_official 133:d4dda5c437f0 100 __USART6_CLK_ENABLE();
mbed_official 242:7074e42da0b2 101 obj->index = 2;
mbed_official 133:d4dda5c437f0 102 }
mbed_official 133:d4dda5c437f0 103
mbed_official 133:d4dda5c437f0 104 // Configure the UART pins
mbed_official 133:d4dda5c437f0 105 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 133:d4dda5c437f0 106 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 133:d4dda5c437f0 107 pin_mode(tx, PullUp);
mbed_official 133:d4dda5c437f0 108 pin_mode(rx, PullUp);
mbed_official 133:d4dda5c437f0 109
mbed_official 133:d4dda5c437f0 110 // Configure UART
mbed_official 133:d4dda5c437f0 111 obj->baudrate = 9600;
mbed_official 133:d4dda5c437f0 112 obj->databits = UART_WORDLENGTH_8B;
mbed_official 133:d4dda5c437f0 113 obj->stopbits = UART_STOPBITS_1;
mbed_official 227:7bd0639b8911 114 obj->parity = UART_PARITY_NONE;
mbed_official 133:d4dda5c437f0 115
mbed_official 242:7074e42da0b2 116 obj->pin_tx = tx;
mbed_official 242:7074e42da0b2 117 obj->pin_rx = rx;
mbed_official 133:d4dda5c437f0 118
mbed_official 242:7074e42da0b2 119 init_uart(obj);
mbed_official 133:d4dda5c437f0 120
mbed_official 133:d4dda5c437f0 121 // For stdio management
mbed_official 133:d4dda5c437f0 122 if (obj->uart == STDIO_UART) {
mbed_official 133:d4dda5c437f0 123 stdio_uart_inited = 1;
mbed_official 133:d4dda5c437f0 124 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 133:d4dda5c437f0 125 }
mbed_official 133:d4dda5c437f0 126
mbed_official 133:d4dda5c437f0 127 }
mbed_official 133:d4dda5c437f0 128
mbed_official 133:d4dda5c437f0 129 void serial_free(serial_t *obj) {
mbed_official 242:7074e42da0b2 130 // Reset UART and disable clock
mbed_official 242:7074e42da0b2 131 if (obj->uart == UART_1) {
mbed_official 242:7074e42da0b2 132 __USART1_FORCE_RESET();
mbed_official 242:7074e42da0b2 133 __USART1_RELEASE_RESET();
mbed_official 242:7074e42da0b2 134 __USART1_CLK_DISABLE();
mbed_official 242:7074e42da0b2 135 }
mbed_official 242:7074e42da0b2 136 if (obj->uart == UART_2) {
mbed_official 242:7074e42da0b2 137 __USART2_FORCE_RESET();
mbed_official 242:7074e42da0b2 138 __USART2_RELEASE_RESET();
mbed_official 242:7074e42da0b2 139 __USART2_CLK_DISABLE();
mbed_official 242:7074e42da0b2 140 }
mbed_official 242:7074e42da0b2 141 if (obj->uart == UART_6) {
mbed_official 242:7074e42da0b2 142 __USART6_FORCE_RESET();
mbed_official 242:7074e42da0b2 143 __USART6_RELEASE_RESET();
mbed_official 242:7074e42da0b2 144 __USART6_CLK_DISABLE();
mbed_official 242:7074e42da0b2 145 }
mbed_official 242:7074e42da0b2 146
mbed_official 242:7074e42da0b2 147 // Configure GPIOs
mbed_official 242:7074e42da0b2 148 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 242:7074e42da0b2 149 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 242:7074e42da0b2 150
mbed_official 133:d4dda5c437f0 151 serial_irq_ids[obj->index] = 0;
mbed_official 133:d4dda5c437f0 152 }
mbed_official 133:d4dda5c437f0 153
mbed_official 133:d4dda5c437f0 154 void serial_baud(serial_t *obj, int baudrate) {
mbed_official 133:d4dda5c437f0 155 obj->baudrate = baudrate;
mbed_official 133:d4dda5c437f0 156 init_uart(obj);
mbed_official 133:d4dda5c437f0 157 }
mbed_official 133:d4dda5c437f0 158
mbed_official 133:d4dda5c437f0 159 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
mbed_official 133:d4dda5c437f0 160 if (data_bits == 8) {
mbed_official 133:d4dda5c437f0 161 obj->databits = UART_WORDLENGTH_8B;
mbed_official 242:7074e42da0b2 162 } else {
mbed_official 133:d4dda5c437f0 163 obj->databits = UART_WORDLENGTH_9B;
mbed_official 133:d4dda5c437f0 164 }
mbed_official 133:d4dda5c437f0 165
mbed_official 133:d4dda5c437f0 166 switch (parity) {
mbed_official 133:d4dda5c437f0 167 case ParityOdd:
mbed_official 133:d4dda5c437f0 168 case ParityForced0:
mbed_official 133:d4dda5c437f0 169 obj->parity = UART_PARITY_ODD;
mbed_official 133:d4dda5c437f0 170 break;
mbed_official 133:d4dda5c437f0 171 case ParityEven:
mbed_official 227:7bd0639b8911 172 case ParityForced1:
mbed_official 133:d4dda5c437f0 173 obj->parity = UART_PARITY_EVEN;
mbed_official 133:d4dda5c437f0 174 break;
mbed_official 133:d4dda5c437f0 175 default: // ParityNone
mbed_official 133:d4dda5c437f0 176 obj->parity = UART_PARITY_NONE;
mbed_official 133:d4dda5c437f0 177 break;
mbed_official 133:d4dda5c437f0 178 }
mbed_official 133:d4dda5c437f0 179
mbed_official 133:d4dda5c437f0 180 if (stop_bits == 2) {
mbed_official 133:d4dda5c437f0 181 obj->stopbits = UART_STOPBITS_2;
mbed_official 242:7074e42da0b2 182 } else {
mbed_official 133:d4dda5c437f0 183 obj->stopbits = UART_STOPBITS_1;
mbed_official 133:d4dda5c437f0 184 }
mbed_official 133:d4dda5c437f0 185
mbed_official 133:d4dda5c437f0 186 init_uart(obj);
mbed_official 133:d4dda5c437f0 187 }
mbed_official 133:d4dda5c437f0 188
mbed_official 133:d4dda5c437f0 189 /******************************************************************************
mbed_official 133:d4dda5c437f0 190 * INTERRUPTS HANDLING
mbed_official 133:d4dda5c437f0 191 ******************************************************************************/
mbed_official 133:d4dda5c437f0 192
mbed_official 133:d4dda5c437f0 193 static void uart_irq(UARTName name, int id) {
mbed_official 133:d4dda5c437f0 194 UartHandle.Instance = (USART_TypeDef *)name;
mbed_official 133:d4dda5c437f0 195 if (serial_irq_ids[id] != 0) {
mbed_official 133:d4dda5c437f0 196 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
mbed_official 133:d4dda5c437f0 197 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 133:d4dda5c437f0 198 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TC);
mbed_official 133:d4dda5c437f0 199 }
mbed_official 133:d4dda5c437f0 200 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
mbed_official 133:d4dda5c437f0 201 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 133:d4dda5c437f0 202 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
mbed_official 133:d4dda5c437f0 203 }
mbed_official 133:d4dda5c437f0 204 }
mbed_official 133:d4dda5c437f0 205 }
mbed_official 133:d4dda5c437f0 206
mbed_official 242:7074e42da0b2 207 static void uart1_irq(void) {
mbed_official 242:7074e42da0b2 208 uart_irq(UART_1, 0);
mbed_official 242:7074e42da0b2 209 }
mbed_official 242:7074e42da0b2 210 static void uart2_irq(void) {
mbed_official 242:7074e42da0b2 211 uart_irq(UART_2, 1);
mbed_official 242:7074e42da0b2 212 }
mbed_official 242:7074e42da0b2 213 static void uart6_irq(void) {
mbed_official 242:7074e42da0b2 214 uart_irq(UART_6, 2);
mbed_official 242:7074e42da0b2 215 }
mbed_official 133:d4dda5c437f0 216
mbed_official 133:d4dda5c437f0 217 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
mbed_official 133:d4dda5c437f0 218 irq_handler = handler;
mbed_official 133:d4dda5c437f0 219 serial_irq_ids[obj->index] = id;
mbed_official 133:d4dda5c437f0 220 }
mbed_official 133:d4dda5c437f0 221
mbed_official 133:d4dda5c437f0 222 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
mbed_official 133:d4dda5c437f0 223 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 133:d4dda5c437f0 224 uint32_t vector = 0;
mbed_official 133:d4dda5c437f0 225
mbed_official 133:d4dda5c437f0 226 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 133:d4dda5c437f0 227
mbed_official 133:d4dda5c437f0 228 if (obj->uart == UART_1) {
mbed_official 133:d4dda5c437f0 229 irq_n = USART1_IRQn;
mbed_official 133:d4dda5c437f0 230 vector = (uint32_t)&uart1_irq;
mbed_official 133:d4dda5c437f0 231 }
mbed_official 133:d4dda5c437f0 232
mbed_official 133:d4dda5c437f0 233 if (obj->uart == UART_2) {
mbed_official 133:d4dda5c437f0 234 irq_n = USART2_IRQn;
mbed_official 133:d4dda5c437f0 235 vector = (uint32_t)&uart2_irq;
mbed_official 133:d4dda5c437f0 236 }
mbed_official 133:d4dda5c437f0 237
mbed_official 133:d4dda5c437f0 238 if (obj->uart == UART_6) {
mbed_official 133:d4dda5c437f0 239 irq_n = USART6_IRQn;
mbed_official 133:d4dda5c437f0 240 vector = (uint32_t)&uart6_irq;
mbed_official 133:d4dda5c437f0 241 }
mbed_official 133:d4dda5c437f0 242
mbed_official 133:d4dda5c437f0 243 if (enable) {
mbed_official 133:d4dda5c437f0 244
mbed_official 133:d4dda5c437f0 245 if (irq == RxIrq) {
mbed_official 133:d4dda5c437f0 246 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 242:7074e42da0b2 247 } else { // TxIrq
mbed_official 133:d4dda5c437f0 248 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 227:7bd0639b8911 249 }
mbed_official 133:d4dda5c437f0 250
mbed_official 133:d4dda5c437f0 251 NVIC_SetVector(irq_n, vector);
mbed_official 133:d4dda5c437f0 252 NVIC_EnableIRQ(irq_n);
mbed_official 133:d4dda5c437f0 253
mbed_official 133:d4dda5c437f0 254 } else { // disable
mbed_official 133:d4dda5c437f0 255
mbed_official 133:d4dda5c437f0 256 int all_disabled = 0;
mbed_official 133:d4dda5c437f0 257
mbed_official 133:d4dda5c437f0 258 if (irq == RxIrq) {
mbed_official 133:d4dda5c437f0 259 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 133:d4dda5c437f0 260 // Check if TxIrq is disabled too
mbed_official 133:d4dda5c437f0 261 if ((UartHandle.Instance->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 242:7074e42da0b2 262 } else { // TxIrq
mbed_official 133:d4dda5c437f0 263 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TXE);
mbed_official 133:d4dda5c437f0 264 // Check if RxIrq is disabled too
mbed_official 227:7bd0639b8911 265 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 133:d4dda5c437f0 266 }
mbed_official 133:d4dda5c437f0 267
mbed_official 133:d4dda5c437f0 268 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 133:d4dda5c437f0 269
mbed_official 227:7bd0639b8911 270 }
mbed_official 133:d4dda5c437f0 271 }
mbed_official 133:d4dda5c437f0 272
mbed_official 133:d4dda5c437f0 273 /******************************************************************************
mbed_official 133:d4dda5c437f0 274 * READ/WRITE
mbed_official 133:d4dda5c437f0 275 ******************************************************************************/
mbed_official 133:d4dda5c437f0 276
mbed_official 133:d4dda5c437f0 277 int serial_getc(serial_t *obj) {
mbed_official 133:d4dda5c437f0 278 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 133:d4dda5c437f0 279 while (!serial_readable(obj));
mbed_official 133:d4dda5c437f0 280 return (int)(uart->DR & 0x1FF);
mbed_official 133:d4dda5c437f0 281 }
mbed_official 133:d4dda5c437f0 282
mbed_official 133:d4dda5c437f0 283 void serial_putc(serial_t *obj, int c) {
mbed_official 133:d4dda5c437f0 284 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 133:d4dda5c437f0 285 while (!serial_writable(obj));
mbed_official 133:d4dda5c437f0 286 uart->DR = (uint32_t)(c & 0x1FF);
mbed_official 133:d4dda5c437f0 287 }
mbed_official 133:d4dda5c437f0 288
mbed_official 133:d4dda5c437f0 289 int serial_readable(serial_t *obj) {
mbed_official 133:d4dda5c437f0 290 int status;
mbed_official 133:d4dda5c437f0 291 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 133:d4dda5c437f0 292 // Check if data is received
mbed_official 133:d4dda5c437f0 293 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 133:d4dda5c437f0 294 return status;
mbed_official 133:d4dda5c437f0 295 }
mbed_official 133:d4dda5c437f0 296
mbed_official 133:d4dda5c437f0 297 int serial_writable(serial_t *obj) {
mbed_official 133:d4dda5c437f0 298 int status;
mbed_official 133:d4dda5c437f0 299 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 133:d4dda5c437f0 300 // Check if data is transmitted
mbed_official 133:d4dda5c437f0 301 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 133:d4dda5c437f0 302 return status;
mbed_official 133:d4dda5c437f0 303 }
mbed_official 133:d4dda5c437f0 304
mbed_official 133:d4dda5c437f0 305 void serial_clear(serial_t *obj) {
mbed_official 133:d4dda5c437f0 306 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 133:d4dda5c437f0 307 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TXE);
mbed_official 133:d4dda5c437f0 308 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
mbed_official 133:d4dda5c437f0 309 }
mbed_official 133:d4dda5c437f0 310
mbed_official 133:d4dda5c437f0 311 void serial_pinout_tx(PinName tx) {
mbed_official 133:d4dda5c437f0 312 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 133:d4dda5c437f0 313 }
mbed_official 133:d4dda5c437f0 314
mbed_official 133:d4dda5c437f0 315 void serial_break_set(serial_t *obj) {
mbed_official 133:d4dda5c437f0 316 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 133:d4dda5c437f0 317 HAL_LIN_SendBreak(&UartHandle);
mbed_official 133:d4dda5c437f0 318 }
mbed_official 133:d4dda5c437f0 319
mbed_official 133:d4dda5c437f0 320 void serial_break_clear(serial_t *obj) {
mbed_official 133:d4dda5c437f0 321 }
mbed_official 242:7074e42da0b2 322
mbed_official 242:7074e42da0b2 323 #endif