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_F411RE/serial_api.c@323:9e901b0a5aa1, 2014-09-13 (annotated)

Committer:
shaoziyang
Date:
Sat Sep 13 14:25:46 2014 +0000
Revision:
323:9e901b0a5aa1
Parent:
235:685d5f11838f 
test with CLOCK_SETUP = 0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 235:685d5f11838f 1 /* mbed Microcontroller Library
mbed_official 235:685d5f11838f 2 *******************************************************************************
mbed_official 235:685d5f11838f 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 235:685d5f11838f 4 * All rights reserved.
mbed_official 235:685d5f11838f 5 *
mbed_official 235:685d5f11838f 6 * Redistribution and use in source and binary forms, with or without
mbed_official 235:685d5f11838f 7 * modification, are permitted provided that the following conditions are met:
mbed_official 235:685d5f11838f 8 *
mbed_official 235:685d5f11838f 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 235:685d5f11838f 10 * this list of conditions and the following disclaimer.
mbed_official 235:685d5f11838f 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 235:685d5f11838f 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 235:685d5f11838f 13 * and/or other materials provided with the distribution.
mbed_official 235:685d5f11838f 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 235:685d5f11838f 15 * may be used to endorse or promote products derived from this software
mbed_official 235:685d5f11838f 16 * without specific prior written permission.
mbed_official 235:685d5f11838f 17 *
mbed_official 235:685d5f11838f 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 235:685d5f11838f 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 235:685d5f11838f 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 235:685d5f11838f 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 235:685d5f11838f 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 235:685d5f11838f 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 235:685d5f11838f 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 235:685d5f11838f 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 235:685d5f11838f 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 235:685d5f11838f 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 235:685d5f11838f 28 *******************************************************************************
mbed_official 235:685d5f11838f 29 */
mbed_official 235:685d5f11838f 30 #include "mbed_assert.h"
mbed_official 235:685d5f11838f 31 #include "serial_api.h"
mbed_official 235:685d5f11838f 32
mbed_official 235:685d5f11838f 33 #if DEVICE_SERIAL
mbed_official 235:685d5f11838f 34
mbed_official 235:685d5f11838f 35 #include "cmsis.h"
mbed_official 235:685d5f11838f 36 #include "pinmap.h"
mbed_official 235:685d5f11838f 37 #include <string.h>
mbed_official 235:685d5f11838f 38
mbed_official 235:685d5f11838f 39 static const PinMap PinMap_UART_TX[] = {
mbed_official 235:685d5f11838f 40 {PA_2, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
mbed_official 235:685d5f11838f 41 {PA_9, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 235:685d5f11838f 42 {PA_11, UART_6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
mbed_official 235:685d5f11838f 43 {PA_15, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 235:685d5f11838f 44 {PB_6, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 235:685d5f11838f 45 {PC_6, UART_6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
mbed_official 235:685d5f11838f 46 {NC, NC, 0}
mbed_official 235:685d5f11838f 47 };
mbed_official 235:685d5f11838f 48
mbed_official 235:685d5f11838f 49 static const PinMap PinMap_UART_RX[] = {
mbed_official 235:685d5f11838f 50 {PA_3, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
mbed_official 235:685d5f11838f 51 {PA_10, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 235:685d5f11838f 52 {PA_12, UART_6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
mbed_official 235:685d5f11838f 53 {PB_3, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 235:685d5f11838f 54 {PB_7, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 235:685d5f11838f 55 {PC_7, UART_6, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF8_USART6)},
mbed_official 235:685d5f11838f 56 {NC, NC, 0}
mbed_official 235:685d5f11838f 57 };
mbed_official 235:685d5f11838f 58
mbed_official 235:685d5f11838f 59 #define UART_NUM (3)
mbed_official 235:685d5f11838f 60
mbed_official 235:685d5f11838f 61 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0};
mbed_official 235:685d5f11838f 62
mbed_official 235:685d5f11838f 63 static uart_irq_handler irq_handler;
mbed_official 235:685d5f11838f 64
mbed_official 235:685d5f11838f 65 UART_HandleTypeDef UartHandle;
mbed_official 235:685d5f11838f 66
mbed_official 235:685d5f11838f 67 int stdio_uart_inited = 0;
mbed_official 235:685d5f11838f 68 serial_t stdio_uart;
mbed_official 235:685d5f11838f 69
mbed_official 235:685d5f11838f 70 static void init_uart(serial_t *obj)
mbed_official 235:685d5f11838f 71 {
mbed_official 235:685d5f11838f 72 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 235:685d5f11838f 73
mbed_official 235:685d5f11838f 74 UartHandle.Init.BaudRate = obj->baudrate;
mbed_official 235:685d5f11838f 75 UartHandle.Init.WordLength = obj->databits;
mbed_official 235:685d5f11838f 76 UartHandle.Init.StopBits = obj->stopbits;
mbed_official 235:685d5f11838f 77 UartHandle.Init.Parity = obj->parity;
mbed_official 235:685d5f11838f 78 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
mbed_official 235:685d5f11838f 79
mbed_official 235:685d5f11838f 80 if (obj->pin_rx == NC) {
mbed_official 235:685d5f11838f 81 UartHandle.Init.Mode = UART_MODE_TX;
mbed_official 235:685d5f11838f 82 } else if (obj->pin_tx == NC) {
mbed_official 235:685d5f11838f 83 UartHandle.Init.Mode = UART_MODE_RX;
mbed_official 235:685d5f11838f 84 } else {
mbed_official 235:685d5f11838f 85 UartHandle.Init.Mode = UART_MODE_TX_RX;
mbed_official 235:685d5f11838f 86 }
mbed_official 235:685d5f11838f 87
mbed_official 235:685d5f11838f 88 HAL_UART_Init(&UartHandle);
mbed_official 235:685d5f11838f 89 }
mbed_official 235:685d5f11838f 90
mbed_official 235:685d5f11838f 91 void serial_init(serial_t *obj, PinName tx, PinName rx)
mbed_official 235:685d5f11838f 92 {
mbed_official 235:685d5f11838f 93 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 235:685d5f11838f 94 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 235:685d5f11838f 95 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 235:685d5f11838f 96
mbed_official 235:685d5f11838f 97 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 235:685d5f11838f 98 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 235:685d5f11838f 99 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 235:685d5f11838f 100
mbed_official 235:685d5f11838f 101 // Enable USART clock
mbed_official 235:685d5f11838f 102 if (obj->uart == UART_1) {
mbed_official 235:685d5f11838f 103 __USART1_CLK_ENABLE();
mbed_official 235:685d5f11838f 104 obj->index = 0;
mbed_official 235:685d5f11838f 105 }
mbed_official 235:685d5f11838f 106 if (obj->uart == UART_2) {
mbed_official 235:685d5f11838f 107 __USART2_CLK_ENABLE();
mbed_official 235:685d5f11838f 108 obj->index = 1;
mbed_official 235:685d5f11838f 109 }
mbed_official 235:685d5f11838f 110 if (obj->uart == UART_6) {
mbed_official 235:685d5f11838f 111 __USART6_CLK_ENABLE();
mbed_official 235:685d5f11838f 112 obj->index = 2;
mbed_official 235:685d5f11838f 113 }
mbed_official 235:685d5f11838f 114
mbed_official 235:685d5f11838f 115 // Configure the UART pins
mbed_official 235:685d5f11838f 116 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 235:685d5f11838f 117 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 235:685d5f11838f 118 pin_mode(tx, PullUp);
mbed_official 235:685d5f11838f 119 pin_mode(rx, PullUp);
mbed_official 235:685d5f11838f 120
mbed_official 235:685d5f11838f 121 // Configure UART
mbed_official 235:685d5f11838f 122 obj->baudrate = 9600;
mbed_official 235:685d5f11838f 123 obj->databits = UART_WORDLENGTH_8B;
mbed_official 235:685d5f11838f 124 obj->stopbits = UART_STOPBITS_1;
mbed_official 235:685d5f11838f 125 obj->parity = UART_PARITY_NONE;
mbed_official 235:685d5f11838f 126
mbed_official 235:685d5f11838f 127 obj->pin_tx = tx;
mbed_official 235:685d5f11838f 128 obj->pin_rx = rx;
mbed_official 235:685d5f11838f 129
mbed_official 235:685d5f11838f 130 init_uart(obj);
mbed_official 235:685d5f11838f 131
mbed_official 235:685d5f11838f 132 // For stdio management
mbed_official 235:685d5f11838f 133 if (obj->uart == STDIO_UART) {
mbed_official 235:685d5f11838f 134 stdio_uart_inited = 1;
mbed_official 235:685d5f11838f 135 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 235:685d5f11838f 136 }
mbed_official 235:685d5f11838f 137 }
mbed_official 235:685d5f11838f 138
mbed_official 235:685d5f11838f 139 void serial_free(serial_t *obj)
mbed_official 235:685d5f11838f 140 {
mbed_official 235:685d5f11838f 141 // Reset UART and disable clock
mbed_official 235:685d5f11838f 142 if (obj->uart == UART_1) {
mbed_official 235:685d5f11838f 143 __USART1_FORCE_RESET();
mbed_official 235:685d5f11838f 144 __USART1_RELEASE_RESET();
mbed_official 235:685d5f11838f 145 __USART1_CLK_DISABLE();
mbed_official 235:685d5f11838f 146 }
mbed_official 235:685d5f11838f 147 if (obj->uart == UART_2) {
mbed_official 235:685d5f11838f 148 __USART2_FORCE_RESET();
mbed_official 235:685d5f11838f 149 __USART2_RELEASE_RESET();
mbed_official 235:685d5f11838f 150 __USART2_CLK_DISABLE();
mbed_official 235:685d5f11838f 151 }
mbed_official 235:685d5f11838f 152 if (obj->uart == UART_6) {
mbed_official 235:685d5f11838f 153 __USART6_FORCE_RESET();
mbed_official 235:685d5f11838f 154 __USART6_RELEASE_RESET();
mbed_official 235:685d5f11838f 155 __USART6_CLK_DISABLE();
mbed_official 235:685d5f11838f 156 }
mbed_official 235:685d5f11838f 157
mbed_official 235:685d5f11838f 158 // Configure GPIOs
mbed_official 235:685d5f11838f 159 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 235:685d5f11838f 160 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 235:685d5f11838f 161
mbed_official 235:685d5f11838f 162 serial_irq_ids[obj->index] = 0;
mbed_official 235:685d5f11838f 163 }
mbed_official 235:685d5f11838f 164
mbed_official 235:685d5f11838f 165 void serial_baud(serial_t *obj, int baudrate)
mbed_official 235:685d5f11838f 166 {
mbed_official 235:685d5f11838f 167 obj->baudrate = baudrate;
mbed_official 235:685d5f11838f 168 init_uart(obj);
mbed_official 235:685d5f11838f 169 }
mbed_official 235:685d5f11838f 170
mbed_official 235:685d5f11838f 171 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
mbed_official 235:685d5f11838f 172 {
mbed_official 235:685d5f11838f 173 if (data_bits == 9) {
mbed_official 235:685d5f11838f 174 obj->databits = UART_WORDLENGTH_9B;
mbed_official 235:685d5f11838f 175 } else {
mbed_official 235:685d5f11838f 176 obj->databits = UART_WORDLENGTH_8B;
mbed_official 235:685d5f11838f 177 }
mbed_official 235:685d5f11838f 178
mbed_official 235:685d5f11838f 179 switch (parity) {
mbed_official 235:685d5f11838f 180 case ParityOdd:
mbed_official 235:685d5f11838f 181 case ParityForced0:
mbed_official 235:685d5f11838f 182 obj->parity = UART_PARITY_ODD;
mbed_official 235:685d5f11838f 183 break;
mbed_official 235:685d5f11838f 184 case ParityEven:
mbed_official 235:685d5f11838f 185 case ParityForced1:
mbed_official 235:685d5f11838f 186 obj->parity = UART_PARITY_EVEN;
mbed_official 235:685d5f11838f 187 break;
mbed_official 235:685d5f11838f 188 default: // ParityNone
mbed_official 235:685d5f11838f 189 obj->parity = UART_PARITY_NONE;
mbed_official 235:685d5f11838f 190 break;
mbed_official 235:685d5f11838f 191 }
mbed_official 235:685d5f11838f 192
mbed_official 235:685d5f11838f 193 if (stop_bits == 2) {
mbed_official 235:685d5f11838f 194 obj->stopbits = UART_STOPBITS_2;
mbed_official 235:685d5f11838f 195 } else {
mbed_official 235:685d5f11838f 196 obj->stopbits = UART_STOPBITS_1;
mbed_official 235:685d5f11838f 197 }
mbed_official 235:685d5f11838f 198
mbed_official 235:685d5f11838f 199 init_uart(obj);
mbed_official 235:685d5f11838f 200 }
mbed_official 235:685d5f11838f 201
mbed_official 235:685d5f11838f 202 /******************************************************************************
mbed_official 235:685d5f11838f 203 * INTERRUPTS HANDLING
mbed_official 235:685d5f11838f 204 ******************************************************************************/
mbed_official 235:685d5f11838f 205
mbed_official 235:685d5f11838f 206 static void uart_irq(UARTName name, int id)
mbed_official 235:685d5f11838f 207 {
mbed_official 235:685d5f11838f 208 UartHandle.Instance = (USART_TypeDef *)name;
mbed_official 235:685d5f11838f 209 if (serial_irq_ids[id] != 0) {
mbed_official 235:685d5f11838f 210 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
mbed_official 235:685d5f11838f 211 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 235:685d5f11838f 212 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TC);
mbed_official 235:685d5f11838f 213 }
mbed_official 235:685d5f11838f 214 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
mbed_official 235:685d5f11838f 215 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 235:685d5f11838f 216 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
mbed_official 235:685d5f11838f 217 }
mbed_official 235:685d5f11838f 218 }
mbed_official 235:685d5f11838f 219 }
mbed_official 235:685d5f11838f 220
mbed_official 235:685d5f11838f 221 static void uart1_irq(void)
mbed_official 235:685d5f11838f 222 {
mbed_official 235:685d5f11838f 223 uart_irq(UART_1, 0);
mbed_official 235:685d5f11838f 224 }
mbed_official 235:685d5f11838f 225
mbed_official 235:685d5f11838f 226 static void uart2_irq(void)
mbed_official 235:685d5f11838f 227 {
mbed_official 235:685d5f11838f 228 uart_irq(UART_2, 1);
mbed_official 235:685d5f11838f 229 }
mbed_official 235:685d5f11838f 230
mbed_official 235:685d5f11838f 231 static void uart6_irq(void)
mbed_official 235:685d5f11838f 232 {
mbed_official 235:685d5f11838f 233 uart_irq(UART_6, 2);
mbed_official 235:685d5f11838f 234 }
mbed_official 235:685d5f11838f 235
mbed_official 235:685d5f11838f 236 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
mbed_official 235:685d5f11838f 237 {
mbed_official 235:685d5f11838f 238 irq_handler = handler;
mbed_official 235:685d5f11838f 239 serial_irq_ids[obj->index] = id;
mbed_official 235:685d5f11838f 240 }
mbed_official 235:685d5f11838f 241
mbed_official 235:685d5f11838f 242 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
mbed_official 235:685d5f11838f 243 {
mbed_official 235:685d5f11838f 244 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 235:685d5f11838f 245 uint32_t vector = 0;
mbed_official 235:685d5f11838f 246
mbed_official 235:685d5f11838f 247 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 235:685d5f11838f 248
mbed_official 235:685d5f11838f 249 if (obj->uart == UART_1) {
mbed_official 235:685d5f11838f 250 irq_n = USART1_IRQn;
mbed_official 235:685d5f11838f 251 vector = (uint32_t)&uart1_irq;
mbed_official 235:685d5f11838f 252 }
mbed_official 235:685d5f11838f 253
mbed_official 235:685d5f11838f 254 if (obj->uart == UART_2) {
mbed_official 235:685d5f11838f 255 irq_n = USART2_IRQn;
mbed_official 235:685d5f11838f 256 vector = (uint32_t)&uart2_irq;
mbed_official 235:685d5f11838f 257 }
mbed_official 235:685d5f11838f 258
mbed_official 235:685d5f11838f 259 if (obj->uart == UART_6) {
mbed_official 235:685d5f11838f 260 irq_n = USART6_IRQn;
mbed_official 235:685d5f11838f 261 vector = (uint32_t)&uart6_irq;
mbed_official 235:685d5f11838f 262 }
mbed_official 235:685d5f11838f 263
mbed_official 235:685d5f11838f 264 if (enable) {
mbed_official 235:685d5f11838f 265
mbed_official 235:685d5f11838f 266 if (irq == RxIrq) {
mbed_official 235:685d5f11838f 267 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 235:685d5f11838f 268 } else { // TxIrq
mbed_official 235:685d5f11838f 269 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 235:685d5f11838f 270 }
mbed_official 235:685d5f11838f 271
mbed_official 235:685d5f11838f 272 NVIC_SetVector(irq_n, vector);
mbed_official 235:685d5f11838f 273 NVIC_EnableIRQ(irq_n);
mbed_official 235:685d5f11838f 274
mbed_official 235:685d5f11838f 275 } else { // disable
mbed_official 235:685d5f11838f 276
mbed_official 235:685d5f11838f 277 int all_disabled = 0;
mbed_official 235:685d5f11838f 278
mbed_official 235:685d5f11838f 279 if (irq == RxIrq) {
mbed_official 235:685d5f11838f 280 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 235:685d5f11838f 281 // Check if TxIrq is disabled too
mbed_official 235:685d5f11838f 282 if ((UartHandle.Instance->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 235:685d5f11838f 283 } else { // TxIrq
mbed_official 235:685d5f11838f 284 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TXE);
mbed_official 235:685d5f11838f 285 // Check if RxIrq is disabled too
mbed_official 235:685d5f11838f 286 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 235:685d5f11838f 287 }
mbed_official 235:685d5f11838f 288
mbed_official 235:685d5f11838f 289 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 235:685d5f11838f 290
mbed_official 235:685d5f11838f 291 }
mbed_official 235:685d5f11838f 292 }
mbed_official 235:685d5f11838f 293
mbed_official 235:685d5f11838f 294 /******************************************************************************
mbed_official 235:685d5f11838f 295 * READ/WRITE
mbed_official 235:685d5f11838f 296 ******************************************************************************/
mbed_official 235:685d5f11838f 297
mbed_official 235:685d5f11838f 298 int serial_getc(serial_t *obj)
mbed_official 235:685d5f11838f 299 {
mbed_official 235:685d5f11838f 300 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 235:685d5f11838f 301 while (!serial_readable(obj));
mbed_official 235:685d5f11838f 302 return (int)(uart->DR & 0x1FF);
mbed_official 235:685d5f11838f 303 }
mbed_official 235:685d5f11838f 304
mbed_official 235:685d5f11838f 305 void serial_putc(serial_t *obj, int c)
mbed_official 235:685d5f11838f 306 {
mbed_official 235:685d5f11838f 307 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 235:685d5f11838f 308 while (!serial_writable(obj));
mbed_official 235:685d5f11838f 309 uart->DR = (uint32_t)(c & 0x1FF);
mbed_official 235:685d5f11838f 310 }
mbed_official 235:685d5f11838f 311
mbed_official 235:685d5f11838f 312 int serial_readable(serial_t *obj)
mbed_official 235:685d5f11838f 313 {
mbed_official 235:685d5f11838f 314 int status;
mbed_official 235:685d5f11838f 315 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 235:685d5f11838f 316 // Check if data is received
mbed_official 235:685d5f11838f 317 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 235:685d5f11838f 318 return status;
mbed_official 235:685d5f11838f 319 }
mbed_official 235:685d5f11838f 320
mbed_official 235:685d5f11838f 321 int serial_writable(serial_t *obj)
mbed_official 235:685d5f11838f 322 {
mbed_official 235:685d5f11838f 323 int status;
mbed_official 235:685d5f11838f 324 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 235:685d5f11838f 325 // Check if data is transmitted
mbed_official 235:685d5f11838f 326 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 235:685d5f11838f 327 return status;
mbed_official 235:685d5f11838f 328 }
mbed_official 235:685d5f11838f 329
mbed_official 235:685d5f11838f 330 void serial_clear(serial_t *obj)
mbed_official 235:685d5f11838f 331 {
mbed_official 235:685d5f11838f 332 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 235:685d5f11838f 333 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TXE);
mbed_official 235:685d5f11838f 334 __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
mbed_official 235:685d5f11838f 335 }
mbed_official 235:685d5f11838f 336
mbed_official 235:685d5f11838f 337 void serial_pinout_tx(PinName tx)
mbed_official 235:685d5f11838f 338 {
mbed_official 235:685d5f11838f 339 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 235:685d5f11838f 340 }
mbed_official 235:685d5f11838f 341
mbed_official 235:685d5f11838f 342 void serial_break_set(serial_t *obj)
mbed_official 235:685d5f11838f 343 {
mbed_official 235:685d5f11838f 344 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 235:685d5f11838f 345 HAL_LIN_SendBreak(&UartHandle);
mbed_official 235:685d5f11838f 346 }
mbed_official 235:685d5f11838f 347
mbed_official 235:685d5f11838f 348 void serial_break_clear(serial_t *obj)
mbed_official 235:685d5f11838f 349 {
mbed_official 235:685d5f11838f 350 }
mbed_official 235:685d5f11838f 351
mbed_official 235:685d5f11838f 352 #endif