gabriel della-monica / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_L053R8/serial_api.c@445:9a3ffe6cfa19, 2015-01-14 (annotated)

Committer:
moirans2
Date:
Wed Jan 14 20:53:08 2015 +0000
Revision:
445:9a3ffe6cfa19
Parent:
414:4ec4c5b614b0 
internal clock stm32L051

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 181:a4cbdfbbd2f4 1 /* mbed Microcontroller Library
mbed_official 181:a4cbdfbbd2f4 2 *******************************************************************************
mbed_official 181:a4cbdfbbd2f4 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 181:a4cbdfbbd2f4 4 * All rights reserved.
mbed_official 181:a4cbdfbbd2f4 5 *
mbed_official 181:a4cbdfbbd2f4 6 * Redistribution and use in source and binary forms, with or without
mbed_official 181:a4cbdfbbd2f4 7 * modification, are permitted provided that the following conditions are met:
mbed_official 181:a4cbdfbbd2f4 8 *
mbed_official 181:a4cbdfbbd2f4 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 181:a4cbdfbbd2f4 10 * this list of conditions and the following disclaimer.
mbed_official 181:a4cbdfbbd2f4 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 181:a4cbdfbbd2f4 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 181:a4cbdfbbd2f4 13 * and/or other materials provided with the distribution.
mbed_official 181:a4cbdfbbd2f4 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 181:a4cbdfbbd2f4 15 * may be used to endorse or promote products derived from this software
mbed_official 181:a4cbdfbbd2f4 16 * without specific prior written permission.
mbed_official 181:a4cbdfbbd2f4 17 *
mbed_official 181:a4cbdfbbd2f4 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 181:a4cbdfbbd2f4 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 181:a4cbdfbbd2f4 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 181:a4cbdfbbd2f4 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 181:a4cbdfbbd2f4 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 181:a4cbdfbbd2f4 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 181:a4cbdfbbd2f4 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 181:a4cbdfbbd2f4 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 181:a4cbdfbbd2f4 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 181:a4cbdfbbd2f4 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 181:a4cbdfbbd2f4 28 *******************************************************************************
mbed_official 181:a4cbdfbbd2f4 29 */
mbed_official 227:7bd0639b8911 30 #include "mbed_assert.h"
mbed_official 181:a4cbdfbbd2f4 31 #include "serial_api.h"
mbed_official 181:a4cbdfbbd2f4 32
mbed_official 181:a4cbdfbbd2f4 33 #if DEVICE_SERIAL
mbed_official 181:a4cbdfbbd2f4 34
mbed_official 181:a4cbdfbbd2f4 35 #include "cmsis.h"
mbed_official 181:a4cbdfbbd2f4 36 #include "pinmap.h"
mbed_official 181:a4cbdfbbd2f4 37 #include <string.h>
mbed_official 414:4ec4c5b614b0 38 #include "PeripheralPins.h"
mbed_official 181:a4cbdfbbd2f4 39
mbed_official 181:a4cbdfbbd2f4 40 #define UART_NUM (3)
mbed_official 181:a4cbdfbbd2f4 41
mbed_official 181:a4cbdfbbd2f4 42 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0};
mbed_official 181:a4cbdfbbd2f4 43
mbed_official 181:a4cbdfbbd2f4 44 static uart_irq_handler irq_handler;
mbed_official 181:a4cbdfbbd2f4 45
mbed_official 181:a4cbdfbbd2f4 46 UART_HandleTypeDef UartHandle;
mbed_official 181:a4cbdfbbd2f4 47
mbed_official 181:a4cbdfbbd2f4 48 int stdio_uart_inited = 0;
mbed_official 181:a4cbdfbbd2f4 49 serial_t stdio_uart;
mbed_official 181:a4cbdfbbd2f4 50
mbed_official 402:09075a3b15e3 51 static void init_uart(serial_t *obj)
mbed_official 402:09075a3b15e3 52 {
mbed_official 181:a4cbdfbbd2f4 53 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 54
mbed_official 201:fa203361dc70 55 // [TODO] Workaround to be removed after HAL driver is corrected
mbed_official 201:fa203361dc70 56 if (obj->uart == LPUART_1) {
mbed_official 201:fa203361dc70 57 UartHandle.Init.BaudRate = obj->baudrate >> 1;
mbed_official 201:fa203361dc70 58 } else {
mbed_official 201:fa203361dc70 59 UartHandle.Init.BaudRate = obj->baudrate;
mbed_official 201:fa203361dc70 60 }
mbed_official 181:a4cbdfbbd2f4 61 UartHandle.Init.WordLength = obj->databits;
mbed_official 181:a4cbdfbbd2f4 62 UartHandle.Init.StopBits = obj->stopbits;
mbed_official 181:a4cbdfbbd2f4 63 UartHandle.Init.Parity = obj->parity;
mbed_official 181:a4cbdfbbd2f4 64 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
mbed_official 201:fa203361dc70 65
mbed_official 201:fa203361dc70 66 if (obj->pin_rx == NC) {
mbed_official 201:fa203361dc70 67 UartHandle.Init.Mode = UART_MODE_TX;
mbed_official 201:fa203361dc70 68 } else if (obj->pin_tx == NC) {
mbed_official 201:fa203361dc70 69 UartHandle.Init.Mode = UART_MODE_RX;
mbed_official 181:a4cbdfbbd2f4 70 } else {
mbed_official 201:fa203361dc70 71 UartHandle.Init.Mode = UART_MODE_TX_RX;
mbed_official 181:a4cbdfbbd2f4 72 }
mbed_official 181:a4cbdfbbd2f4 73
mbed_official 293:2a9cf2ed1474 74 // Disable the reception overrun detection
mbed_official 293:2a9cf2ed1474 75 UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_RXOVERRUNDISABLE_INIT;
mbed_official 293:2a9cf2ed1474 76 UartHandle.AdvancedInit.OverrunDisable = UART_ADVFEATURE_OVERRUN_DISABLE;
mbed_official 402:09075a3b15e3 77
mbed_official 181:a4cbdfbbd2f4 78 HAL_UART_Init(&UartHandle);
mbed_official 181:a4cbdfbbd2f4 79 }
mbed_official 181:a4cbdfbbd2f4 80
mbed_official 402:09075a3b15e3 81 void serial_init(serial_t *obj, PinName tx, PinName rx)
mbed_official 402:09075a3b15e3 82 {
mbed_official 181:a4cbdfbbd2f4 83 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 181:a4cbdfbbd2f4 84 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 181:a4cbdfbbd2f4 85 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 181:a4cbdfbbd2f4 86
mbed_official 181:a4cbdfbbd2f4 87 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 181:a4cbdfbbd2f4 88 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 227:7bd0639b8911 89 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 181:a4cbdfbbd2f4 90
mbed_official 181:a4cbdfbbd2f4 91 // Enable UART clock
mbed_official 181:a4cbdfbbd2f4 92 if (obj->uart == UART_1) {
mbed_official 181:a4cbdfbbd2f4 93 __USART1_CLK_ENABLE();
mbed_official 181:a4cbdfbbd2f4 94 obj->index = 0;
mbed_official 181:a4cbdfbbd2f4 95 }
mbed_official 181:a4cbdfbbd2f4 96
mbed_official 181:a4cbdfbbd2f4 97 if (obj->uart == UART_2) {
mbed_official 181:a4cbdfbbd2f4 98 __USART2_CLK_ENABLE();
mbed_official 181:a4cbdfbbd2f4 99 obj->index = 1;
mbed_official 181:a4cbdfbbd2f4 100 }
mbed_official 181:a4cbdfbbd2f4 101
mbed_official 181:a4cbdfbbd2f4 102 if (obj->uart == LPUART_1) {
mbed_official 181:a4cbdfbbd2f4 103 __LPUART1_CLK_ENABLE();
mbed_official 181:a4cbdfbbd2f4 104 obj->index = 2;
mbed_official 181:a4cbdfbbd2f4 105 }
mbed_official 181:a4cbdfbbd2f4 106
mbed_official 181:a4cbdfbbd2f4 107 // Configure the UART pins
mbed_official 181:a4cbdfbbd2f4 108 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 181:a4cbdfbbd2f4 109 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 339:40bd4701f3e2 110 if (tx != NC) {
mbed_official 339:40bd4701f3e2 111 pin_mode(tx, PullUp);
mbed_official 339:40bd4701f3e2 112 }
mbed_official 339:40bd4701f3e2 113 if (rx != NC) {
mbed_official 339:40bd4701f3e2 114 pin_mode(rx, PullUp);
mbed_official 339:40bd4701f3e2 115 }
mbed_official 181:a4cbdfbbd2f4 116
mbed_official 181:a4cbdfbbd2f4 117 // Configure UART
mbed_official 181:a4cbdfbbd2f4 118 obj->baudrate = 9600;
mbed_official 181:a4cbdfbbd2f4 119 obj->databits = UART_WORDLENGTH_8B;
mbed_official 181:a4cbdfbbd2f4 120 obj->stopbits = UART_STOPBITS_1;
mbed_official 181:a4cbdfbbd2f4 121 obj->parity = UART_PARITY_NONE;
mbed_official 201:fa203361dc70 122 obj->pin_tx = tx;
mbed_official 201:fa203361dc70 123 obj->pin_rx = rx;
mbed_official 181:a4cbdfbbd2f4 124
mbed_official 181:a4cbdfbbd2f4 125 init_uart(obj);
mbed_official 181:a4cbdfbbd2f4 126
mbed_official 181:a4cbdfbbd2f4 127 // For stdio management
mbed_official 181:a4cbdfbbd2f4 128 if (obj->uart == STDIO_UART) {
mbed_official 181:a4cbdfbbd2f4 129 stdio_uart_inited = 1;
mbed_official 181:a4cbdfbbd2f4 130 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 181:a4cbdfbbd2f4 131 }
mbed_official 181:a4cbdfbbd2f4 132 }
mbed_official 181:a4cbdfbbd2f4 133
mbed_official 402:09075a3b15e3 134 void serial_free(serial_t *obj)
mbed_official 402:09075a3b15e3 135 {
mbed_official 201:fa203361dc70 136 // Reset UART and disable clock
mbed_official 201:fa203361dc70 137 if (obj->uart == UART_1) {
mbed_official 201:fa203361dc70 138 __USART1_FORCE_RESET();
mbed_official 201:fa203361dc70 139 __USART1_RELEASE_RESET();
mbed_official 201:fa203361dc70 140 __USART1_CLK_DISABLE();
mbed_official 201:fa203361dc70 141 }
mbed_official 201:fa203361dc70 142
mbed_official 201:fa203361dc70 143 if (obj->uart == UART_2) {
mbed_official 201:fa203361dc70 144 __USART2_FORCE_RESET();
mbed_official 201:fa203361dc70 145 __USART2_RELEASE_RESET();
mbed_official 201:fa203361dc70 146 __USART2_CLK_DISABLE();
mbed_official 201:fa203361dc70 147 }
mbed_official 201:fa203361dc70 148
mbed_official 201:fa203361dc70 149 if (obj->uart == LPUART_1) {
mbed_official 201:fa203361dc70 150 __LPUART1_FORCE_RESET();
mbed_official 201:fa203361dc70 151 __LPUART1_RELEASE_RESET();
mbed_official 201:fa203361dc70 152 __LPUART1_CLK_DISABLE();
mbed_official 201:fa203361dc70 153 }
mbed_official 201:fa203361dc70 154
mbed_official 201:fa203361dc70 155 // Configure GPIOs
mbed_official 201:fa203361dc70 156 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 201:fa203361dc70 157 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 201:fa203361dc70 158
mbed_official 181:a4cbdfbbd2f4 159 serial_irq_ids[obj->index] = 0;
mbed_official 181:a4cbdfbbd2f4 160 }
mbed_official 181:a4cbdfbbd2f4 161
mbed_official 402:09075a3b15e3 162 void serial_baud(serial_t *obj, int baudrate)
mbed_official 402:09075a3b15e3 163 {
mbed_official 181:a4cbdfbbd2f4 164 obj->baudrate = baudrate;
mbed_official 181:a4cbdfbbd2f4 165 init_uart(obj);
mbed_official 181:a4cbdfbbd2f4 166 }
mbed_official 181:a4cbdfbbd2f4 167
mbed_official 402:09075a3b15e3 168 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
mbed_official 402:09075a3b15e3 169 {
mbed_official 242:7074e42da0b2 170 if (data_bits == 9) {
mbed_official 242:7074e42da0b2 171 obj->databits = UART_WORDLENGTH_9B;
mbed_official 242:7074e42da0b2 172 } else {
mbed_official 181:a4cbdfbbd2f4 173 obj->databits = UART_WORDLENGTH_8B;
mbed_official 181:a4cbdfbbd2f4 174 }
mbed_official 181:a4cbdfbbd2f4 175
mbed_official 181:a4cbdfbbd2f4 176 switch (parity) {
mbed_official 181:a4cbdfbbd2f4 177 case ParityOdd:
mbed_official 181:a4cbdfbbd2f4 178 case ParityForced0:
mbed_official 181:a4cbdfbbd2f4 179 obj->parity = UART_PARITY_ODD;
mbed_official 181:a4cbdfbbd2f4 180 break;
mbed_official 181:a4cbdfbbd2f4 181 case ParityEven:
mbed_official 181:a4cbdfbbd2f4 182 case ParityForced1:
mbed_official 181:a4cbdfbbd2f4 183 obj->parity = UART_PARITY_EVEN;
mbed_official 181:a4cbdfbbd2f4 184 break;
mbed_official 181:a4cbdfbbd2f4 185 default: // ParityNone
mbed_official 181:a4cbdfbbd2f4 186 obj->parity = UART_PARITY_NONE;
mbed_official 181:a4cbdfbbd2f4 187 break;
mbed_official 181:a4cbdfbbd2f4 188 }
mbed_official 181:a4cbdfbbd2f4 189
mbed_official 181:a4cbdfbbd2f4 190 if (stop_bits == 2) {
mbed_official 181:a4cbdfbbd2f4 191 obj->stopbits = UART_STOPBITS_2;
mbed_official 181:a4cbdfbbd2f4 192 } else {
mbed_official 181:a4cbdfbbd2f4 193 obj->stopbits = UART_STOPBITS_1;
mbed_official 181:a4cbdfbbd2f4 194 }
mbed_official 181:a4cbdfbbd2f4 195
mbed_official 181:a4cbdfbbd2f4 196 init_uart(obj);
mbed_official 181:a4cbdfbbd2f4 197 }
mbed_official 181:a4cbdfbbd2f4 198
mbed_official 181:a4cbdfbbd2f4 199 /******************************************************************************
mbed_official 181:a4cbdfbbd2f4 200 * INTERRUPTS HANDLING
mbed_official 181:a4cbdfbbd2f4 201 ******************************************************************************/
mbed_official 181:a4cbdfbbd2f4 202
mbed_official 402:09075a3b15e3 203 static void uart_irq(UARTName name, int id)
mbed_official 402:09075a3b15e3 204 {
mbed_official 181:a4cbdfbbd2f4 205 UartHandle.Instance = (USART_TypeDef *)name;
mbed_official 181:a4cbdfbbd2f4 206 if (serial_irq_ids[id] != 0) {
mbed_official 181:a4cbdfbbd2f4 207 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
mbed_official 181:a4cbdfbbd2f4 208 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 181:a4cbdfbbd2f4 209 __HAL_UART_CLEAR_IT(&UartHandle, UART_CLEAR_TCF);
mbed_official 181:a4cbdfbbd2f4 210 }
mbed_official 181:a4cbdfbbd2f4 211 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
mbed_official 181:a4cbdfbbd2f4 212 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 293:2a9cf2ed1474 213 volatile uint32_t tmpval = UartHandle.Instance->RDR; // Clear RXNE bit
mbed_official 181:a4cbdfbbd2f4 214 }
mbed_official 181:a4cbdfbbd2f4 215 }
mbed_official 181:a4cbdfbbd2f4 216 }
mbed_official 181:a4cbdfbbd2f4 217
mbed_official 402:09075a3b15e3 218 static void uart1_irq(void)
mbed_official 402:09075a3b15e3 219 {
mbed_official 181:a4cbdfbbd2f4 220 uart_irq(UART_1, 0);
mbed_official 181:a4cbdfbbd2f4 221 }
mbed_official 201:fa203361dc70 222
mbed_official 402:09075a3b15e3 223 static void uart2_irq(void)
mbed_official 402:09075a3b15e3 224 {
mbed_official 181:a4cbdfbbd2f4 225 uart_irq(UART_2, 1);
mbed_official 181:a4cbdfbbd2f4 226 }
mbed_official 201:fa203361dc70 227
mbed_official 402:09075a3b15e3 228 static void lpuart1_irq(void)
mbed_official 402:09075a3b15e3 229 {
mbed_official 181:a4cbdfbbd2f4 230 uart_irq(LPUART_1, 2);
mbed_official 181:a4cbdfbbd2f4 231 }
mbed_official 181:a4cbdfbbd2f4 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 181:a4cbdfbbd2f4 235 irq_handler = handler;
mbed_official 181:a4cbdfbbd2f4 236 serial_irq_ids[obj->index] = id;
mbed_official 181:a4cbdfbbd2f4 237 }
mbed_official 181:a4cbdfbbd2f4 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 181:a4cbdfbbd2f4 241 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 181:a4cbdfbbd2f4 242 uint32_t vector = 0;
mbed_official 181:a4cbdfbbd2f4 243
mbed_official 181:a4cbdfbbd2f4 244 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 245
mbed_official 181:a4cbdfbbd2f4 246 if (obj->uart == UART_1) {
mbed_official 181:a4cbdfbbd2f4 247 irq_n = USART1_IRQn;
mbed_official 181:a4cbdfbbd2f4 248 vector = (uint32_t)&uart1_irq;
mbed_official 181:a4cbdfbbd2f4 249 }
mbed_official 181:a4cbdfbbd2f4 250
mbed_official 181:a4cbdfbbd2f4 251 if (obj->uart == UART_2) {
mbed_official 181:a4cbdfbbd2f4 252 irq_n = USART2_IRQn;
mbed_official 181:a4cbdfbbd2f4 253 vector = (uint32_t)&uart2_irq;
mbed_official 181:a4cbdfbbd2f4 254 }
mbed_official 181:a4cbdfbbd2f4 255
mbed_official 181:a4cbdfbbd2f4 256 if (obj->uart == LPUART_1) {
mbed_official 181:a4cbdfbbd2f4 257 irq_n = RNG_LPUART1_IRQn;
mbed_official 181:a4cbdfbbd2f4 258 vector = (uint32_t)&lpuart1_irq;
mbed_official 181:a4cbdfbbd2f4 259 }
mbed_official 181:a4cbdfbbd2f4 260
mbed_official 181:a4cbdfbbd2f4 261 if (enable) {
mbed_official 181:a4cbdfbbd2f4 262
mbed_official 181:a4cbdfbbd2f4 263 if (irq == RxIrq) {
mbed_official 181:a4cbdfbbd2f4 264 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 181:a4cbdfbbd2f4 265 } else { // TxIrq
mbed_official 181:a4cbdfbbd2f4 266 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 181:a4cbdfbbd2f4 267 }
mbed_official 181:a4cbdfbbd2f4 268
mbed_official 181:a4cbdfbbd2f4 269 NVIC_SetVector(irq_n, vector);
mbed_official 181:a4cbdfbbd2f4 270 NVIC_EnableIRQ(irq_n);
mbed_official 181:a4cbdfbbd2f4 271
mbed_official 181:a4cbdfbbd2f4 272 } else { // disable
mbed_official 181:a4cbdfbbd2f4 273
mbed_official 181:a4cbdfbbd2f4 274 int all_disabled = 0;
mbed_official 181:a4cbdfbbd2f4 275
mbed_official 181:a4cbdfbbd2f4 276 if (irq == RxIrq) {
mbed_official 181:a4cbdfbbd2f4 277 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 181:a4cbdfbbd2f4 278 // Check if TxIrq is disabled too
mbed_official 293:2a9cf2ed1474 279 if ((UartHandle.Instance->CR1 & USART_CR1_TCIE) == 0) all_disabled = 1;
mbed_official 181:a4cbdfbbd2f4 280 } else { // TxIrq
mbed_official 293:2a9cf2ed1474 281 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 181:a4cbdfbbd2f4 282 // Check if RxIrq is disabled too
mbed_official 181:a4cbdfbbd2f4 283 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 181:a4cbdfbbd2f4 284 }
mbed_official 181:a4cbdfbbd2f4 285
mbed_official 181:a4cbdfbbd2f4 286 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 181:a4cbdfbbd2f4 287
mbed_official 181:a4cbdfbbd2f4 288 }
mbed_official 181:a4cbdfbbd2f4 289 }
mbed_official 181:a4cbdfbbd2f4 290
mbed_official 181:a4cbdfbbd2f4 291 /******************************************************************************
mbed_official 181:a4cbdfbbd2f4 292 * READ/WRITE
mbed_official 181:a4cbdfbbd2f4 293 ******************************************************************************/
mbed_official 181:a4cbdfbbd2f4 294
mbed_official 402:09075a3b15e3 295 int serial_getc(serial_t *obj)
mbed_official 402:09075a3b15e3 296 {
mbed_official 181:a4cbdfbbd2f4 297 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 298 while (!serial_readable(obj));
mbed_official 293:2a9cf2ed1474 299 return (int)(uart->RDR & (uint32_t)0xFF);
mbed_official 181:a4cbdfbbd2f4 300 }
mbed_official 181:a4cbdfbbd2f4 301
mbed_official 402:09075a3b15e3 302 void serial_putc(serial_t *obj, int c)
mbed_official 402:09075a3b15e3 303 {
mbed_official 181:a4cbdfbbd2f4 304 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 305 while (!serial_writable(obj));
mbed_official 293:2a9cf2ed1474 306 uart->TDR = (uint32_t)(c & (uint32_t)0xFF);
mbed_official 181:a4cbdfbbd2f4 307 }
mbed_official 181:a4cbdfbbd2f4 308
mbed_official 402:09075a3b15e3 309 int serial_readable(serial_t *obj)
mbed_official 402:09075a3b15e3 310 {
mbed_official 181:a4cbdfbbd2f4 311 int status;
mbed_official 181:a4cbdfbbd2f4 312 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 313 // Check if data is received
mbed_official 181:a4cbdfbbd2f4 314 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 181:a4cbdfbbd2f4 315 return status;
mbed_official 181:a4cbdfbbd2f4 316 }
mbed_official 181:a4cbdfbbd2f4 317
mbed_official 402:09075a3b15e3 318 int serial_writable(serial_t *obj)
mbed_official 402:09075a3b15e3 319 {
mbed_official 181:a4cbdfbbd2f4 320 int status;
mbed_official 181:a4cbdfbbd2f4 321 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 322 // Check if data is transmitted
mbed_official 181:a4cbdfbbd2f4 323 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 181:a4cbdfbbd2f4 324 return status;
mbed_official 181:a4cbdfbbd2f4 325 }
mbed_official 181:a4cbdfbbd2f4 326
mbed_official 402:09075a3b15e3 327 void serial_clear(serial_t *obj)
mbed_official 402:09075a3b15e3 328 {
mbed_official 181:a4cbdfbbd2f4 329 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 330 __HAL_UART_CLEAR_IT(&UartHandle, UART_CLEAR_TCF);
mbed_official 181:a4cbdfbbd2f4 331 __HAL_UART_SEND_REQ(&UartHandle, UART_RXDATA_FLUSH_REQUEST);
mbed_official 181:a4cbdfbbd2f4 332 }
mbed_official 181:a4cbdfbbd2f4 333
mbed_official 402:09075a3b15e3 334 void serial_pinout_tx(PinName tx)
mbed_official 402:09075a3b15e3 335 {
mbed_official 181:a4cbdfbbd2f4 336 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 181:a4cbdfbbd2f4 337 }
mbed_official 181:a4cbdfbbd2f4 338
mbed_official 402:09075a3b15e3 339 void serial_break_set(serial_t *obj)
mbed_official 402:09075a3b15e3 340 {
mbed_official 181:a4cbdfbbd2f4 341 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 342 __HAL_UART_SEND_REQ(&UartHandle, UART_SENDBREAK_REQUEST);
mbed_official 181:a4cbdfbbd2f4 343 }
mbed_official 181:a4cbdfbbd2f4 344
mbed_official 402:09075a3b15e3 345 void serial_break_clear(serial_t *obj)
mbed_official 402:09075a3b15e3 346 {
mbed_official 181:a4cbdfbbd2f4 347 }
mbed_official 181:a4cbdfbbd2f4 348
mbed_official 181:a4cbdfbbd2f4 349 #endif