gabriel della-monica / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_DISCO_L053C8/serial_api.c@439:c4382fcbbaed, 2014-12-15 (annotated)

Committer:
mbed_official
Date:
Mon Dec 15 09:30:07 2014 +0000
Revision:
439:c4382fcbbaed
Parent:
376:cb4d9db17537 
Synchronized with git revision 6172cbea1a558a9a2ebbd965e77f83a9ceeec670



Full URL: https://github.com/mbedmicro/mbed/commit/6172cbea1a558a9a2ebbd965e77f83a9ceeec670/



Targets: DISCO_L053C8 - update from nucleo latest changes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 376:cb4d9db17537 1 /* mbed Microcontroller Library
mbed_official 376:cb4d9db17537 2 *******************************************************************************
mbed_official 376:cb4d9db17537 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 376:cb4d9db17537 4 * All rights reserved.
mbed_official 376:cb4d9db17537 5 *
mbed_official 376:cb4d9db17537 6 * Redistribution and use in source and binary forms, with or without
mbed_official 376:cb4d9db17537 7 * modification, are permitted provided that the following conditions are met:
mbed_official 376:cb4d9db17537 8 *
mbed_official 376:cb4d9db17537 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 376:cb4d9db17537 10 * this list of conditions and the following disclaimer.
mbed_official 376:cb4d9db17537 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 376:cb4d9db17537 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 376:cb4d9db17537 13 * and/or other materials provided with the distribution.
mbed_official 376:cb4d9db17537 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 376:cb4d9db17537 15 * may be used to endorse or promote products derived from this software
mbed_official 376:cb4d9db17537 16 * without specific prior written permission.
mbed_official 376:cb4d9db17537 17 *
mbed_official 376:cb4d9db17537 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 376:cb4d9db17537 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 376:cb4d9db17537 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 376:cb4d9db17537 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 376:cb4d9db17537 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 376:cb4d9db17537 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 376:cb4d9db17537 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 376:cb4d9db17537 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 376:cb4d9db17537 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 376:cb4d9db17537 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 376:cb4d9db17537 28 *******************************************************************************
mbed_official 376:cb4d9db17537 29 */
mbed_official 376:cb4d9db17537 30 #include "mbed_assert.h"
mbed_official 376:cb4d9db17537 31 #include "serial_api.h"
mbed_official 376:cb4d9db17537 32
mbed_official 376:cb4d9db17537 33 #if DEVICE_SERIAL
mbed_official 376:cb4d9db17537 34
mbed_official 376:cb4d9db17537 35 #include "cmsis.h"
mbed_official 376:cb4d9db17537 36 #include "pinmap.h"
mbed_official 376:cb4d9db17537 37 #include <string.h>
mbed_official 439:c4382fcbbaed 38 #include "PeripheralPins.h"
mbed_official 376:cb4d9db17537 39
mbed_official 376:cb4d9db17537 40 #define UART_NUM (3)
mbed_official 376:cb4d9db17537 41
mbed_official 376:cb4d9db17537 42 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0};
mbed_official 376:cb4d9db17537 43
mbed_official 376:cb4d9db17537 44 static uart_irq_handler irq_handler;
mbed_official 376:cb4d9db17537 45
mbed_official 376:cb4d9db17537 46 UART_HandleTypeDef UartHandle;
mbed_official 376:cb4d9db17537 47
mbed_official 376:cb4d9db17537 48 int stdio_uart_inited = 0;
mbed_official 376:cb4d9db17537 49 serial_t stdio_uart;
mbed_official 376:cb4d9db17537 50
mbed_official 439:c4382fcbbaed 51 static void init_uart(serial_t *obj)
mbed_official 439:c4382fcbbaed 52 {
mbed_official 376:cb4d9db17537 53 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 376:cb4d9db17537 54
mbed_official 376:cb4d9db17537 55 // [TODO] Workaround to be removed after HAL driver is corrected
mbed_official 376:cb4d9db17537 56 if (obj->uart == LPUART_1) {
mbed_official 376:cb4d9db17537 57 UartHandle.Init.BaudRate = obj->baudrate >> 1;
mbed_official 376:cb4d9db17537 58 } else {
mbed_official 376:cb4d9db17537 59 UartHandle.Init.BaudRate = obj->baudrate;
mbed_official 376:cb4d9db17537 60 }
mbed_official 376:cb4d9db17537 61 UartHandle.Init.WordLength = obj->databits;
mbed_official 376:cb4d9db17537 62 UartHandle.Init.StopBits = obj->stopbits;
mbed_official 376:cb4d9db17537 63 UartHandle.Init.Parity = obj->parity;
mbed_official 376:cb4d9db17537 64 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
mbed_official 376:cb4d9db17537 65
mbed_official 376:cb4d9db17537 66 if (obj->pin_rx == NC) {
mbed_official 376:cb4d9db17537 67 UartHandle.Init.Mode = UART_MODE_TX;
mbed_official 376:cb4d9db17537 68 } else if (obj->pin_tx == NC) {
mbed_official 376:cb4d9db17537 69 UartHandle.Init.Mode = UART_MODE_RX;
mbed_official 376:cb4d9db17537 70 } else {
mbed_official 376:cb4d9db17537 71 UartHandle.Init.Mode = UART_MODE_TX_RX;
mbed_official 376:cb4d9db17537 72 }
mbed_official 376:cb4d9db17537 73
mbed_official 376:cb4d9db17537 74 // Disable the reception overrun detection
mbed_official 376:cb4d9db17537 75 UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_RXOVERRUNDISABLE_INIT;
mbed_official 376:cb4d9db17537 76 UartHandle.AdvancedInit.OverrunDisable = UART_ADVFEATURE_OVERRUN_DISABLE;
mbed_official 439:c4382fcbbaed 77
mbed_official 376:cb4d9db17537 78 HAL_UART_Init(&UartHandle);
mbed_official 376:cb4d9db17537 79 }
mbed_official 376:cb4d9db17537 80
mbed_official 439:c4382fcbbaed 81 void serial_init(serial_t *obj, PinName tx, PinName rx)
mbed_official 439:c4382fcbbaed 82 {
mbed_official 376:cb4d9db17537 83 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 376:cb4d9db17537 84 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 376:cb4d9db17537 85 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 376:cb4d9db17537 86
mbed_official 376:cb4d9db17537 87 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 376:cb4d9db17537 88 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 376:cb4d9db17537 89 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 376:cb4d9db17537 90
mbed_official 376:cb4d9db17537 91 // Enable UART clock
mbed_official 376:cb4d9db17537 92 if (obj->uart == UART_1) {
mbed_official 376:cb4d9db17537 93 __USART1_CLK_ENABLE();
mbed_official 376:cb4d9db17537 94 obj->index = 0;
mbed_official 376:cb4d9db17537 95 }
mbed_official 376:cb4d9db17537 96
mbed_official 376:cb4d9db17537 97 if (obj->uart == UART_2) {
mbed_official 376:cb4d9db17537 98 __USART2_CLK_ENABLE();
mbed_official 376:cb4d9db17537 99 obj->index = 1;
mbed_official 376:cb4d9db17537 100 }
mbed_official 376:cb4d9db17537 101
mbed_official 376:cb4d9db17537 102 if (obj->uart == LPUART_1) {
mbed_official 376:cb4d9db17537 103 __LPUART1_CLK_ENABLE();
mbed_official 376:cb4d9db17537 104 obj->index = 2;
mbed_official 376:cb4d9db17537 105 }
mbed_official 376:cb4d9db17537 106
mbed_official 376:cb4d9db17537 107 // Configure the UART pins
mbed_official 376:cb4d9db17537 108 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 376:cb4d9db17537 109 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 376:cb4d9db17537 110 if (tx != NC) {
mbed_official 376:cb4d9db17537 111 pin_mode(tx, PullUp);
mbed_official 376:cb4d9db17537 112 }
mbed_official 376:cb4d9db17537 113 if (rx != NC) {
mbed_official 376:cb4d9db17537 114 pin_mode(rx, PullUp);
mbed_official 376:cb4d9db17537 115 }
mbed_official 376:cb4d9db17537 116
mbed_official 376:cb4d9db17537 117 // Configure UART
mbed_official 376:cb4d9db17537 118 obj->baudrate = 9600;
mbed_official 376:cb4d9db17537 119 obj->databits = UART_WORDLENGTH_8B;
mbed_official 376:cb4d9db17537 120 obj->stopbits = UART_STOPBITS_1;
mbed_official 376:cb4d9db17537 121 obj->parity = UART_PARITY_NONE;
mbed_official 376:cb4d9db17537 122 obj->pin_tx = tx;
mbed_official 376:cb4d9db17537 123 obj->pin_rx = rx;
mbed_official 376:cb4d9db17537 124
mbed_official 376:cb4d9db17537 125 init_uart(obj);
mbed_official 376:cb4d9db17537 126
mbed_official 376:cb4d9db17537 127 // For stdio management
mbed_official 376:cb4d9db17537 128 if (obj->uart == STDIO_UART) {
mbed_official 376:cb4d9db17537 129 stdio_uart_inited = 1;
mbed_official 376:cb4d9db17537 130 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 376:cb4d9db17537 131 }
mbed_official 376:cb4d9db17537 132 }
mbed_official 376:cb4d9db17537 133
mbed_official 439:c4382fcbbaed 134 void serial_free(serial_t *obj)
mbed_official 439:c4382fcbbaed 135 {
mbed_official 376:cb4d9db17537 136 // Reset UART and disable clock
mbed_official 376:cb4d9db17537 137 if (obj->uart == UART_1) {
mbed_official 376:cb4d9db17537 138 __USART1_FORCE_RESET();
mbed_official 376:cb4d9db17537 139 __USART1_RELEASE_RESET();
mbed_official 376:cb4d9db17537 140 __USART1_CLK_DISABLE();
mbed_official 376:cb4d9db17537 141 }
mbed_official 376:cb4d9db17537 142
mbed_official 376:cb4d9db17537 143 if (obj->uart == UART_2) {
mbed_official 376:cb4d9db17537 144 __USART2_FORCE_RESET();
mbed_official 376:cb4d9db17537 145 __USART2_RELEASE_RESET();
mbed_official 376:cb4d9db17537 146 __USART2_CLK_DISABLE();
mbed_official 376:cb4d9db17537 147 }
mbed_official 376:cb4d9db17537 148
mbed_official 376:cb4d9db17537 149 if (obj->uart == LPUART_1) {
mbed_official 376:cb4d9db17537 150 __LPUART1_FORCE_RESET();
mbed_official 376:cb4d9db17537 151 __LPUART1_RELEASE_RESET();
mbed_official 376:cb4d9db17537 152 __LPUART1_CLK_DISABLE();
mbed_official 376:cb4d9db17537 153 }
mbed_official 376:cb4d9db17537 154
mbed_official 376:cb4d9db17537 155 // Configure GPIOs
mbed_official 376:cb4d9db17537 156 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 376:cb4d9db17537 157 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 376:cb4d9db17537 158
mbed_official 376:cb4d9db17537 159 serial_irq_ids[obj->index] = 0;
mbed_official 376:cb4d9db17537 160 }
mbed_official 376:cb4d9db17537 161
mbed_official 439:c4382fcbbaed 162 void serial_baud(serial_t *obj, int baudrate)
mbed_official 439:c4382fcbbaed 163 {
mbed_official 376:cb4d9db17537 164 obj->baudrate = baudrate;
mbed_official 376:cb4d9db17537 165 init_uart(obj);
mbed_official 376:cb4d9db17537 166 }
mbed_official 376:cb4d9db17537 167
mbed_official 439:c4382fcbbaed 168 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
mbed_official 439:c4382fcbbaed 169 {
mbed_official 376:cb4d9db17537 170 if (data_bits == 9) {
mbed_official 376:cb4d9db17537 171 obj->databits = UART_WORDLENGTH_9B;
mbed_official 376:cb4d9db17537 172 } else {
mbed_official 376:cb4d9db17537 173 obj->databits = UART_WORDLENGTH_8B;
mbed_official 376:cb4d9db17537 174 }
mbed_official 376:cb4d9db17537 175
mbed_official 376:cb4d9db17537 176 switch (parity) {
mbed_official 376:cb4d9db17537 177 case ParityOdd:
mbed_official 376:cb4d9db17537 178 case ParityForced0:
mbed_official 376:cb4d9db17537 179 obj->parity = UART_PARITY_ODD;
mbed_official 376:cb4d9db17537 180 break;
mbed_official 376:cb4d9db17537 181 case ParityEven:
mbed_official 376:cb4d9db17537 182 case ParityForced1:
mbed_official 376:cb4d9db17537 183 obj->parity = UART_PARITY_EVEN;
mbed_official 376:cb4d9db17537 184 break;
mbed_official 376:cb4d9db17537 185 default: // ParityNone
mbed_official 376:cb4d9db17537 186 obj->parity = UART_PARITY_NONE;
mbed_official 376:cb4d9db17537 187 break;
mbed_official 376:cb4d9db17537 188 }
mbed_official 376:cb4d9db17537 189
mbed_official 376:cb4d9db17537 190 if (stop_bits == 2) {
mbed_official 376:cb4d9db17537 191 obj->stopbits = UART_STOPBITS_2;
mbed_official 376:cb4d9db17537 192 } else {
mbed_official 376:cb4d9db17537 193 obj->stopbits = UART_STOPBITS_1;
mbed_official 376:cb4d9db17537 194 }
mbed_official 376:cb4d9db17537 195
mbed_official 376:cb4d9db17537 196 init_uart(obj);
mbed_official 376:cb4d9db17537 197 }
mbed_official 376:cb4d9db17537 198
mbed_official 376:cb4d9db17537 199 /******************************************************************************
mbed_official 376:cb4d9db17537 200 * INTERRUPTS HANDLING
mbed_official 376:cb4d9db17537 201 ******************************************************************************/
mbed_official 376:cb4d9db17537 202
mbed_official 439:c4382fcbbaed 203 static void uart_irq(UARTName name, int id)
mbed_official 439:c4382fcbbaed 204 {
mbed_official 376:cb4d9db17537 205 UartHandle.Instance = (USART_TypeDef *)name;
mbed_official 376:cb4d9db17537 206 if (serial_irq_ids[id] != 0) {
mbed_official 376:cb4d9db17537 207 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
mbed_official 376:cb4d9db17537 208 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 376:cb4d9db17537 209 __HAL_UART_CLEAR_IT(&UartHandle, UART_CLEAR_TCF);
mbed_official 376:cb4d9db17537 210 }
mbed_official 376:cb4d9db17537 211 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
mbed_official 376:cb4d9db17537 212 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 376:cb4d9db17537 213 volatile uint32_t tmpval = UartHandle.Instance->RDR; // Clear RXNE bit
mbed_official 376:cb4d9db17537 214 }
mbed_official 376:cb4d9db17537 215 }
mbed_official 376:cb4d9db17537 216 }
mbed_official 376:cb4d9db17537 217
mbed_official 439:c4382fcbbaed 218 static void uart1_irq(void)
mbed_official 439:c4382fcbbaed 219 {
mbed_official 376:cb4d9db17537 220 uart_irq(UART_1, 0);
mbed_official 376:cb4d9db17537 221 }
mbed_official 376:cb4d9db17537 222
mbed_official 439:c4382fcbbaed 223 static void uart2_irq(void)
mbed_official 439:c4382fcbbaed 224 {
mbed_official 376:cb4d9db17537 225 uart_irq(UART_2, 1);
mbed_official 376:cb4d9db17537 226 }
mbed_official 376:cb4d9db17537 227
mbed_official 439:c4382fcbbaed 228 static void lpuart1_irq(void)
mbed_official 439:c4382fcbbaed 229 {
mbed_official 376:cb4d9db17537 230 uart_irq(LPUART_1, 2);
mbed_official 376:cb4d9db17537 231 }
mbed_official 376:cb4d9db17537 232
mbed_official 439:c4382fcbbaed 233 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
mbed_official 439:c4382fcbbaed 234 {
mbed_official 376:cb4d9db17537 235 irq_handler = handler;
mbed_official 376:cb4d9db17537 236 serial_irq_ids[obj->index] = id;
mbed_official 376:cb4d9db17537 237 }
mbed_official 376:cb4d9db17537 238
mbed_official 439:c4382fcbbaed 239 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
mbed_official 439:c4382fcbbaed 240 {
mbed_official 376:cb4d9db17537 241 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 376:cb4d9db17537 242 uint32_t vector = 0;
mbed_official 376:cb4d9db17537 243
mbed_official 376:cb4d9db17537 244 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 376:cb4d9db17537 245
mbed_official 376:cb4d9db17537 246 if (obj->uart == UART_1) {
mbed_official 376:cb4d9db17537 247 irq_n = USART1_IRQn;
mbed_official 376:cb4d9db17537 248 vector = (uint32_t)&uart1_irq;
mbed_official 376:cb4d9db17537 249 }
mbed_official 376:cb4d9db17537 250
mbed_official 376:cb4d9db17537 251 if (obj->uart == UART_2) {
mbed_official 376:cb4d9db17537 252 irq_n = USART2_IRQn;
mbed_official 376:cb4d9db17537 253 vector = (uint32_t)&uart2_irq;
mbed_official 376:cb4d9db17537 254 }
mbed_official 376:cb4d9db17537 255
mbed_official 376:cb4d9db17537 256 if (obj->uart == LPUART_1) {
mbed_official 376:cb4d9db17537 257 irq_n = RNG_LPUART1_IRQn;
mbed_official 376:cb4d9db17537 258 vector = (uint32_t)&lpuart1_irq;
mbed_official 376:cb4d9db17537 259 }
mbed_official 376:cb4d9db17537 260
mbed_official 376:cb4d9db17537 261 if (enable) {
mbed_official 376:cb4d9db17537 262
mbed_official 376:cb4d9db17537 263 if (irq == RxIrq) {
mbed_official 376:cb4d9db17537 264 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 376:cb4d9db17537 265 } else { // TxIrq
mbed_official 376:cb4d9db17537 266 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 376:cb4d9db17537 267 }
mbed_official 376:cb4d9db17537 268
mbed_official 376:cb4d9db17537 269 NVIC_SetVector(irq_n, vector);
mbed_official 376:cb4d9db17537 270 NVIC_EnableIRQ(irq_n);
mbed_official 376:cb4d9db17537 271
mbed_official 376:cb4d9db17537 272 } else { // disable
mbed_official 376:cb4d9db17537 273
mbed_official 376:cb4d9db17537 274 int all_disabled = 0;
mbed_official 376:cb4d9db17537 275
mbed_official 376:cb4d9db17537 276 if (irq == RxIrq) {
mbed_official 376:cb4d9db17537 277 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 376:cb4d9db17537 278 // Check if TxIrq is disabled too
mbed_official 376:cb4d9db17537 279 if ((UartHandle.Instance->CR1 & USART_CR1_TCIE) == 0) all_disabled = 1;
mbed_official 376:cb4d9db17537 280 } else { // TxIrq
mbed_official 376:cb4d9db17537 281 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 376:cb4d9db17537 282 // Check if RxIrq is disabled too
mbed_official 376:cb4d9db17537 283 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 376:cb4d9db17537 284 }
mbed_official 376:cb4d9db17537 285
mbed_official 376:cb4d9db17537 286 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 376:cb4d9db17537 287
mbed_official 376:cb4d9db17537 288 }
mbed_official 376:cb4d9db17537 289 }
mbed_official 376:cb4d9db17537 290
mbed_official 376:cb4d9db17537 291 /******************************************************************************
mbed_official 376:cb4d9db17537 292 * READ/WRITE
mbed_official 376:cb4d9db17537 293 ******************************************************************************/
mbed_official 376:cb4d9db17537 294
mbed_official 439:c4382fcbbaed 295 int serial_getc(serial_t *obj)
mbed_official 439:c4382fcbbaed 296 {
mbed_official 376:cb4d9db17537 297 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 376:cb4d9db17537 298 while (!serial_readable(obj));
mbed_official 376:cb4d9db17537 299 return (int)(uart->RDR & (uint32_t)0xFF);
mbed_official 376:cb4d9db17537 300 }
mbed_official 376:cb4d9db17537 301
mbed_official 439:c4382fcbbaed 302 void serial_putc(serial_t *obj, int c)
mbed_official 439:c4382fcbbaed 303 {
mbed_official 376:cb4d9db17537 304 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 376:cb4d9db17537 305 while (!serial_writable(obj));
mbed_official 376:cb4d9db17537 306 uart->TDR = (uint32_t)(c & (uint32_t)0xFF);
mbed_official 376:cb4d9db17537 307 }
mbed_official 376:cb4d9db17537 308
mbed_official 439:c4382fcbbaed 309 int serial_readable(serial_t *obj)
mbed_official 439:c4382fcbbaed 310 {
mbed_official 376:cb4d9db17537 311 int status;
mbed_official 376:cb4d9db17537 312 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 376:cb4d9db17537 313 // Check if data is received
mbed_official 376:cb4d9db17537 314 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 376:cb4d9db17537 315 return status;
mbed_official 376:cb4d9db17537 316 }
mbed_official 376:cb4d9db17537 317
mbed_official 439:c4382fcbbaed 318 int serial_writable(serial_t *obj)
mbed_official 439:c4382fcbbaed 319 {
mbed_official 376:cb4d9db17537 320 int status;
mbed_official 376:cb4d9db17537 321 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 376:cb4d9db17537 322 // Check if data is transmitted
mbed_official 376:cb4d9db17537 323 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 376:cb4d9db17537 324 return status;
mbed_official 376:cb4d9db17537 325 }
mbed_official 376:cb4d9db17537 326
mbed_official 439:c4382fcbbaed 327 void serial_clear(serial_t *obj)
mbed_official 439:c4382fcbbaed 328 {
mbed_official 376:cb4d9db17537 329 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 376:cb4d9db17537 330 __HAL_UART_CLEAR_IT(&UartHandle, UART_CLEAR_TCF);
mbed_official 376:cb4d9db17537 331 __HAL_UART_SEND_REQ(&UartHandle, UART_RXDATA_FLUSH_REQUEST);
mbed_official 376:cb4d9db17537 332 }
mbed_official 376:cb4d9db17537 333
mbed_official 439:c4382fcbbaed 334 void serial_pinout_tx(PinName tx)
mbed_official 439:c4382fcbbaed 335 {
mbed_official 376:cb4d9db17537 336 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 376:cb4d9db17537 337 }
mbed_official 376:cb4d9db17537 338
mbed_official 439:c4382fcbbaed 339 void serial_break_set(serial_t *obj)
mbed_official 439:c4382fcbbaed 340 {
mbed_official 376:cb4d9db17537 341 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 376:cb4d9db17537 342 __HAL_UART_SEND_REQ(&UartHandle, UART_SENDBREAK_REQUEST);
mbed_official 376:cb4d9db17537 343 }
mbed_official 376:cb4d9db17537 344
mbed_official 439:c4382fcbbaed 345 void serial_break_clear(serial_t *obj)
mbed_official 439:c4382fcbbaed 346 {
mbed_official 376:cb4d9db17537 347 }
mbed_official 376:cb4d9db17537 348
mbed_official 376:cb4d9db17537 349 #endif