lzbp li / mbed-stm32l0l1-src-1

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Fork of mbed-stm32l0/l1-src by lzbp li

targets/hal/TARGET_STM/TARGET_STM32L0/serial_api.c@638:56887a2974b9, 2016-09-08 (annotated)

Committer:
lzbpli
Date:
Thu Sep 08 02:46:37 2016 +0000
Revision:
638:56887a2974b9
Parent:
531:47d2b67c511f 
????

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 531:47d2b67c511f 3 * Copyright (c) 2015, 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 531:47d2b67c511f 37 #include "mbed_error.h"
mbed_official 181:a4cbdfbbd2f4 38 #include <string.h>
mbed_official 414:4ec4c5b614b0 39 #include "PeripheralPins.h"
mbed_official 181:a4cbdfbbd2f4 40
mbed_official 489:119543c9f674 41 #define UART_NUM (5)
mbed_official 181:a4cbdfbbd2f4 42
mbed_official 489:119543c9f674 43 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0, 0, 0};
mbed_official 181:a4cbdfbbd2f4 44
mbed_official 181:a4cbdfbbd2f4 45 static uart_irq_handler irq_handler;
mbed_official 181:a4cbdfbbd2f4 46
mbed_official 181:a4cbdfbbd2f4 47 UART_HandleTypeDef UartHandle;
mbed_official 181:a4cbdfbbd2f4 48
mbed_official 181:a4cbdfbbd2f4 49 int stdio_uart_inited = 0;
mbed_official 181:a4cbdfbbd2f4 50 serial_t stdio_uart;
mbed_official 181:a4cbdfbbd2f4 51
mbed_official 402:09075a3b15e3 52 static void init_uart(serial_t *obj)
mbed_official 402:09075a3b15e3 53 {
mbed_official 181:a4cbdfbbd2f4 54 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 55
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 531:47d2b67c511f 78 if (HAL_UART_Init(&UartHandle) != HAL_OK) {
mbed_official 531:47d2b67c511f 79 error("Cannot initialize UART");
mbed_official 531:47d2b67c511f 80 }
mbed_official 181:a4cbdfbbd2f4 81 }
mbed_official 181:a4cbdfbbd2f4 82
mbed_official 402:09075a3b15e3 83 void serial_init(serial_t *obj, PinName tx, PinName rx)
mbed_official 402:09075a3b15e3 84 {
mbed_official 181:a4cbdfbbd2f4 85 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 181:a4cbdfbbd2f4 86 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 181:a4cbdfbbd2f4 87 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 181:a4cbdfbbd2f4 88
mbed_official 181:a4cbdfbbd2f4 89 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 181:a4cbdfbbd2f4 90 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 227:7bd0639b8911 91 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 181:a4cbdfbbd2f4 92
mbed_official 181:a4cbdfbbd2f4 93 // Enable UART clock
mbed_official 181:a4cbdfbbd2f4 94 if (obj->uart == UART_1) {
mbed_official 489:119543c9f674 95 __HAL_RCC_USART1_CLK_ENABLE();
mbed_official 181:a4cbdfbbd2f4 96 obj->index = 0;
mbed_official 181:a4cbdfbbd2f4 97 }
mbed_official 181:a4cbdfbbd2f4 98
mbed_official 181:a4cbdfbbd2f4 99 if (obj->uart == UART_2) {
mbed_official 489:119543c9f674 100 __HAL_RCC_USART2_CLK_ENABLE();
mbed_official 181:a4cbdfbbd2f4 101 obj->index = 1;
mbed_official 181:a4cbdfbbd2f4 102 }
mbed_official 181:a4cbdfbbd2f4 103
mbed_official 181:a4cbdfbbd2f4 104 if (obj->uart == LPUART_1) {
mbed_official 489:119543c9f674 105 __HAL_RCC_LPUART1_CLK_ENABLE();
mbed_official 181:a4cbdfbbd2f4 106 obj->index = 2;
mbed_official 181:a4cbdfbbd2f4 107 }
mbed_official 181:a4cbdfbbd2f4 108
mbed_official 489:119543c9f674 109 #if defined(USART4_BASE)
mbed_official 489:119543c9f674 110 if (obj->uart == UART_4) {
mbed_official 489:119543c9f674 111 __HAL_RCC_USART4_CLK_ENABLE();
mbed_official 489:119543c9f674 112 obj->index = 3;
mbed_official 489:119543c9f674 113 }
mbed_official 489:119543c9f674 114 #endif
mbed_official 489:119543c9f674 115
mbed_official 489:119543c9f674 116 #if defined(USART5_BASE)
mbed_official 489:119543c9f674 117 if (obj->uart == UART_5) {
mbed_official 489:119543c9f674 118 __HAL_RCC_USART5_CLK_ENABLE();
mbed_official 489:119543c9f674 119 obj->index = 4;
mbed_official 489:119543c9f674 120 }
mbed_official 489:119543c9f674 121 #endif
mbed_official 489:119543c9f674 122
mbed_official 181:a4cbdfbbd2f4 123 // Configure the UART pins
mbed_official 181:a4cbdfbbd2f4 124 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 181:a4cbdfbbd2f4 125 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 339:40bd4701f3e2 126 if (tx != NC) {
mbed_official 339:40bd4701f3e2 127 pin_mode(tx, PullUp);
mbed_official 339:40bd4701f3e2 128 }
mbed_official 339:40bd4701f3e2 129 if (rx != NC) {
mbed_official 339:40bd4701f3e2 130 pin_mode(rx, PullUp);
mbed_official 339:40bd4701f3e2 131 }
mbed_official 181:a4cbdfbbd2f4 132
mbed_official 181:a4cbdfbbd2f4 133 // Configure UART
mbed_official 181:a4cbdfbbd2f4 134 obj->baudrate = 9600;
mbed_official 181:a4cbdfbbd2f4 135 obj->databits = UART_WORDLENGTH_8B;
mbed_official 181:a4cbdfbbd2f4 136 obj->stopbits = UART_STOPBITS_1;
mbed_official 181:a4cbdfbbd2f4 137 obj->parity = UART_PARITY_NONE;
mbed_official 201:fa203361dc70 138 obj->pin_tx = tx;
mbed_official 201:fa203361dc70 139 obj->pin_rx = rx;
mbed_official 181:a4cbdfbbd2f4 140
mbed_official 181:a4cbdfbbd2f4 141 init_uart(obj);
mbed_official 181:a4cbdfbbd2f4 142
mbed_official 181:a4cbdfbbd2f4 143 // For stdio management
mbed_official 181:a4cbdfbbd2f4 144 if (obj->uart == STDIO_UART) {
mbed_official 181:a4cbdfbbd2f4 145 stdio_uart_inited = 1;
mbed_official 181:a4cbdfbbd2f4 146 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 181:a4cbdfbbd2f4 147 }
mbed_official 181:a4cbdfbbd2f4 148 }
mbed_official 181:a4cbdfbbd2f4 149
mbed_official 402:09075a3b15e3 150 void serial_free(serial_t *obj)
mbed_official 402:09075a3b15e3 151 {
mbed_official 201:fa203361dc70 152 // Reset UART and disable clock
mbed_official 201:fa203361dc70 153 if (obj->uart == UART_1) {
mbed_official 489:119543c9f674 154 __HAL_RCC_USART1_FORCE_RESET();
mbed_official 489:119543c9f674 155 __HAL_RCC_USART1_RELEASE_RESET();
mbed_official 489:119543c9f674 156 __HAL_RCC_USART1_CLK_DISABLE();
mbed_official 201:fa203361dc70 157 }
mbed_official 201:fa203361dc70 158
mbed_official 201:fa203361dc70 159 if (obj->uart == UART_2) {
mbed_official 489:119543c9f674 160 __HAL_RCC_USART2_FORCE_RESET();
mbed_official 489:119543c9f674 161 __HAL_RCC_USART2_RELEASE_RESET();
mbed_official 489:119543c9f674 162 __HAL_RCC_USART2_CLK_DISABLE();
mbed_official 201:fa203361dc70 163 }
mbed_official 201:fa203361dc70 164
mbed_official 201:fa203361dc70 165 if (obj->uart == LPUART_1) {
mbed_official 489:119543c9f674 166 __HAL_RCC_LPUART1_FORCE_RESET();
mbed_official 489:119543c9f674 167 __HAL_RCC_LPUART1_RELEASE_RESET();
mbed_official 489:119543c9f674 168 __HAL_RCC_LPUART1_CLK_DISABLE();
mbed_official 201:fa203361dc70 169 }
mbed_official 201:fa203361dc70 170
mbed_official 489:119543c9f674 171 #if defined(USART4_BASE)
mbed_official 489:119543c9f674 172 if (obj->uart == UART_4) {
mbed_official 489:119543c9f674 173 __HAL_RCC_USART4_FORCE_RESET();
mbed_official 489:119543c9f674 174 __HAL_RCC_USART4_RELEASE_RESET();
mbed_official 489:119543c9f674 175 __HAL_RCC_USART4_CLK_DISABLE();
mbed_official 489:119543c9f674 176 }
mbed_official 489:119543c9f674 177 #endif
mbed_official 489:119543c9f674 178
mbed_official 489:119543c9f674 179 #if defined(USART5_BASE)
mbed_official 489:119543c9f674 180 if (obj->uart == UART_5) {
mbed_official 489:119543c9f674 181 __HAL_RCC_USART5_FORCE_RESET();
mbed_official 489:119543c9f674 182 __HAL_RCC_USART5_RELEASE_RESET();
mbed_official 489:119543c9f674 183 __HAL_RCC_USART5_CLK_DISABLE();
mbed_official 489:119543c9f674 184 }
mbed_official 489:119543c9f674 185 #endif
mbed_official 489:119543c9f674 186
mbed_official 201:fa203361dc70 187 // Configure GPIOs
mbed_official 201:fa203361dc70 188 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 201:fa203361dc70 189 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 201:fa203361dc70 190
mbed_official 181:a4cbdfbbd2f4 191 serial_irq_ids[obj->index] = 0;
mbed_official 181:a4cbdfbbd2f4 192 }
mbed_official 181:a4cbdfbbd2f4 193
mbed_official 402:09075a3b15e3 194 void serial_baud(serial_t *obj, int baudrate)
mbed_official 402:09075a3b15e3 195 {
mbed_official 181:a4cbdfbbd2f4 196 obj->baudrate = baudrate;
mbed_official 181:a4cbdfbbd2f4 197 init_uart(obj);
mbed_official 181:a4cbdfbbd2f4 198 }
mbed_official 181:a4cbdfbbd2f4 199
mbed_official 402:09075a3b15e3 200 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
mbed_official 402:09075a3b15e3 201 {
mbed_official 242:7074e42da0b2 202 if (data_bits == 9) {
mbed_official 242:7074e42da0b2 203 obj->databits = UART_WORDLENGTH_9B;
mbed_official 242:7074e42da0b2 204 } else {
mbed_official 181:a4cbdfbbd2f4 205 obj->databits = UART_WORDLENGTH_8B;
mbed_official 181:a4cbdfbbd2f4 206 }
mbed_official 181:a4cbdfbbd2f4 207
mbed_official 181:a4cbdfbbd2f4 208 switch (parity) {
mbed_official 181:a4cbdfbbd2f4 209 case ParityOdd:
mbed_official 181:a4cbdfbbd2f4 210 case ParityForced0:
mbed_official 181:a4cbdfbbd2f4 211 obj->parity = UART_PARITY_ODD;
mbed_official 181:a4cbdfbbd2f4 212 break;
mbed_official 181:a4cbdfbbd2f4 213 case ParityEven:
mbed_official 181:a4cbdfbbd2f4 214 case ParityForced1:
mbed_official 181:a4cbdfbbd2f4 215 obj->parity = UART_PARITY_EVEN;
mbed_official 181:a4cbdfbbd2f4 216 break;
mbed_official 181:a4cbdfbbd2f4 217 default: // ParityNone
mbed_official 181:a4cbdfbbd2f4 218 obj->parity = UART_PARITY_NONE;
mbed_official 181:a4cbdfbbd2f4 219 break;
mbed_official 181:a4cbdfbbd2f4 220 }
mbed_official 181:a4cbdfbbd2f4 221
mbed_official 181:a4cbdfbbd2f4 222 if (stop_bits == 2) {
mbed_official 181:a4cbdfbbd2f4 223 obj->stopbits = UART_STOPBITS_2;
mbed_official 181:a4cbdfbbd2f4 224 } else {
mbed_official 181:a4cbdfbbd2f4 225 obj->stopbits = UART_STOPBITS_1;
mbed_official 181:a4cbdfbbd2f4 226 }
mbed_official 181:a4cbdfbbd2f4 227
mbed_official 181:a4cbdfbbd2f4 228 init_uart(obj);
mbed_official 181:a4cbdfbbd2f4 229 }
mbed_official 181:a4cbdfbbd2f4 230
mbed_official 181:a4cbdfbbd2f4 231 /******************************************************************************
mbed_official 181:a4cbdfbbd2f4 232 * INTERRUPTS HANDLING
mbed_official 181:a4cbdfbbd2f4 233 ******************************************************************************/
mbed_official 181:a4cbdfbbd2f4 234
mbed_official 402:09075a3b15e3 235 static void uart_irq(UARTName name, int id)
mbed_official 402:09075a3b15e3 236 {
mbed_official 181:a4cbdfbbd2f4 237 UartHandle.Instance = (USART_TypeDef *)name;
mbed_official 181:a4cbdfbbd2f4 238 if (serial_irq_ids[id] != 0) {
mbed_official 181:a4cbdfbbd2f4 239 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
mbed_official 181:a4cbdfbbd2f4 240 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 181:a4cbdfbbd2f4 241 __HAL_UART_CLEAR_IT(&UartHandle, UART_CLEAR_TCF);
mbed_official 181:a4cbdfbbd2f4 242 }
mbed_official 181:a4cbdfbbd2f4 243 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
mbed_official 181:a4cbdfbbd2f4 244 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 293:2a9cf2ed1474 245 volatile uint32_t tmpval = UartHandle.Instance->RDR; // Clear RXNE bit
mbed_official 181:a4cbdfbbd2f4 246 }
mbed_official 181:a4cbdfbbd2f4 247 }
mbed_official 181:a4cbdfbbd2f4 248 }
mbed_official 181:a4cbdfbbd2f4 249
mbed_official 402:09075a3b15e3 250 static void uart1_irq(void)
mbed_official 402:09075a3b15e3 251 {
mbed_official 181:a4cbdfbbd2f4 252 uart_irq(UART_1, 0);
mbed_official 181:a4cbdfbbd2f4 253 }
mbed_official 201:fa203361dc70 254
mbed_official 402:09075a3b15e3 255 static void uart2_irq(void)
mbed_official 402:09075a3b15e3 256 {
mbed_official 181:a4cbdfbbd2f4 257 uart_irq(UART_2, 1);
mbed_official 181:a4cbdfbbd2f4 258 }
mbed_official 201:fa203361dc70 259
mbed_official 402:09075a3b15e3 260 static void lpuart1_irq(void)
mbed_official 402:09075a3b15e3 261 {
mbed_official 181:a4cbdfbbd2f4 262 uart_irq(LPUART_1, 2);
mbed_official 181:a4cbdfbbd2f4 263 }
mbed_official 181:a4cbdfbbd2f4 264
mbed_official 489:119543c9f674 265 #if defined(USART4_BASE)
mbed_official 489:119543c9f674 266 static void uart4_irq(void)
mbed_official 489:119543c9f674 267 {
mbed_official 489:119543c9f674 268 uart_irq(UART_4, 3);
mbed_official 489:119543c9f674 269 }
mbed_official 489:119543c9f674 270 #endif
mbed_official 489:119543c9f674 271
mbed_official 489:119543c9f674 272 #if defined(USART5_BASE)
mbed_official 489:119543c9f674 273 static void uart5_irq(void)
mbed_official 489:119543c9f674 274 {
mbed_official 489:119543c9f674 275 uart_irq(UART_5, 4);
mbed_official 489:119543c9f674 276 }
mbed_official 489:119543c9f674 277 #endif
mbed_official 489:119543c9f674 278
mbed_official 402:09075a3b15e3 279 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
mbed_official 402:09075a3b15e3 280 {
mbed_official 181:a4cbdfbbd2f4 281 irq_handler = handler;
mbed_official 181:a4cbdfbbd2f4 282 serial_irq_ids[obj->index] = id;
mbed_official 181:a4cbdfbbd2f4 283 }
mbed_official 181:a4cbdfbbd2f4 284
mbed_official 402:09075a3b15e3 285 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
mbed_official 402:09075a3b15e3 286 {
mbed_official 181:a4cbdfbbd2f4 287 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 181:a4cbdfbbd2f4 288 uint32_t vector = 0;
mbed_official 181:a4cbdfbbd2f4 289
mbed_official 181:a4cbdfbbd2f4 290 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 291
mbed_official 181:a4cbdfbbd2f4 292 if (obj->uart == UART_1) {
mbed_official 181:a4cbdfbbd2f4 293 irq_n = USART1_IRQn;
mbed_official 181:a4cbdfbbd2f4 294 vector = (uint32_t)&uart1_irq;
mbed_official 181:a4cbdfbbd2f4 295 }
mbed_official 181:a4cbdfbbd2f4 296
mbed_official 181:a4cbdfbbd2f4 297 if (obj->uart == UART_2) {
mbed_official 181:a4cbdfbbd2f4 298 irq_n = USART2_IRQn;
mbed_official 181:a4cbdfbbd2f4 299 vector = (uint32_t)&uart2_irq;
mbed_official 181:a4cbdfbbd2f4 300 }
mbed_official 181:a4cbdfbbd2f4 301
mbed_official 181:a4cbdfbbd2f4 302 if (obj->uart == LPUART_1) {
mbed_official 181:a4cbdfbbd2f4 303 irq_n = RNG_LPUART1_IRQn;
mbed_official 181:a4cbdfbbd2f4 304 vector = (uint32_t)&lpuart1_irq;
mbed_official 181:a4cbdfbbd2f4 305 }
mbed_official 181:a4cbdfbbd2f4 306
mbed_official 489:119543c9f674 307 #if defined(USART4_BASE)
mbed_official 489:119543c9f674 308 if (obj->uart == UART_4) {
mbed_official 489:119543c9f674 309 irq_n = USART4_5_IRQn;
mbed_official 489:119543c9f674 310 vector = (uint32_t)&uart4_irq;
mbed_official 489:119543c9f674 311 }
mbed_official 489:119543c9f674 312 #endif
mbed_official 489:119543c9f674 313
mbed_official 489:119543c9f674 314 #if defined(USART5_BASE)
mbed_official 489:119543c9f674 315 if (obj->uart == UART_5) {
mbed_official 489:119543c9f674 316 irq_n = USART4_5_IRQn;
mbed_official 489:119543c9f674 317 vector = (uint32_t)&uart5_irq;
mbed_official 489:119543c9f674 318 }
mbed_official 489:119543c9f674 319 #endif
mbed_official 489:119543c9f674 320
mbed_official 181:a4cbdfbbd2f4 321 if (enable) {
mbed_official 181:a4cbdfbbd2f4 322
mbed_official 181:a4cbdfbbd2f4 323 if (irq == RxIrq) {
mbed_official 181:a4cbdfbbd2f4 324 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 181:a4cbdfbbd2f4 325 } else { // TxIrq
mbed_official 181:a4cbdfbbd2f4 326 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 181:a4cbdfbbd2f4 327 }
mbed_official 181:a4cbdfbbd2f4 328
mbed_official 181:a4cbdfbbd2f4 329 NVIC_SetVector(irq_n, vector);
mbed_official 181:a4cbdfbbd2f4 330 NVIC_EnableIRQ(irq_n);
mbed_official 181:a4cbdfbbd2f4 331
mbed_official 181:a4cbdfbbd2f4 332 } else { // disable
mbed_official 181:a4cbdfbbd2f4 333
mbed_official 181:a4cbdfbbd2f4 334 int all_disabled = 0;
mbed_official 181:a4cbdfbbd2f4 335
mbed_official 181:a4cbdfbbd2f4 336 if (irq == RxIrq) {
mbed_official 181:a4cbdfbbd2f4 337 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 181:a4cbdfbbd2f4 338 // Check if TxIrq is disabled too
mbed_official 293:2a9cf2ed1474 339 if ((UartHandle.Instance->CR1 & USART_CR1_TCIE) == 0) all_disabled = 1;
mbed_official 181:a4cbdfbbd2f4 340 } else { // TxIrq
mbed_official 293:2a9cf2ed1474 341 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 181:a4cbdfbbd2f4 342 // Check if RxIrq is disabled too
mbed_official 181:a4cbdfbbd2f4 343 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 181:a4cbdfbbd2f4 344 }
mbed_official 181:a4cbdfbbd2f4 345
mbed_official 181:a4cbdfbbd2f4 346 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 181:a4cbdfbbd2f4 347
mbed_official 181:a4cbdfbbd2f4 348 }
mbed_official 181:a4cbdfbbd2f4 349 }
mbed_official 181:a4cbdfbbd2f4 350
mbed_official 181:a4cbdfbbd2f4 351 /******************************************************************************
mbed_official 181:a4cbdfbbd2f4 352 * READ/WRITE
mbed_official 181:a4cbdfbbd2f4 353 ******************************************************************************/
mbed_official 181:a4cbdfbbd2f4 354
mbed_official 402:09075a3b15e3 355 int serial_getc(serial_t *obj)
mbed_official 402:09075a3b15e3 356 {
mbed_official 181:a4cbdfbbd2f4 357 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 358 while (!serial_readable(obj));
mbed_official 293:2a9cf2ed1474 359 return (int)(uart->RDR & (uint32_t)0xFF);
mbed_official 181:a4cbdfbbd2f4 360 }
mbed_official 181:a4cbdfbbd2f4 361
mbed_official 402:09075a3b15e3 362 void serial_putc(serial_t *obj, int c)
mbed_official 402:09075a3b15e3 363 {
mbed_official 181:a4cbdfbbd2f4 364 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 365 while (!serial_writable(obj));
mbed_official 293:2a9cf2ed1474 366 uart->TDR = (uint32_t)(c & (uint32_t)0xFF);
mbed_official 181:a4cbdfbbd2f4 367 }
mbed_official 181:a4cbdfbbd2f4 368
mbed_official 402:09075a3b15e3 369 int serial_readable(serial_t *obj)
mbed_official 402:09075a3b15e3 370 {
mbed_official 181:a4cbdfbbd2f4 371 int status;
mbed_official 181:a4cbdfbbd2f4 372 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 373 // Check if data is received
mbed_official 181:a4cbdfbbd2f4 374 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 181:a4cbdfbbd2f4 375 return status;
mbed_official 181:a4cbdfbbd2f4 376 }
mbed_official 181:a4cbdfbbd2f4 377
mbed_official 402:09075a3b15e3 378 int serial_writable(serial_t *obj)
mbed_official 402:09075a3b15e3 379 {
mbed_official 181:a4cbdfbbd2f4 380 int status;
mbed_official 181:a4cbdfbbd2f4 381 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 382 // Check if data is transmitted
mbed_official 181:a4cbdfbbd2f4 383 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 181:a4cbdfbbd2f4 384 return status;
mbed_official 181:a4cbdfbbd2f4 385 }
mbed_official 181:a4cbdfbbd2f4 386
mbed_official 402:09075a3b15e3 387 void serial_clear(serial_t *obj)
mbed_official 402:09075a3b15e3 388 {
mbed_official 181:a4cbdfbbd2f4 389 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 390 __HAL_UART_CLEAR_IT(&UartHandle, UART_CLEAR_TCF);
mbed_official 181:a4cbdfbbd2f4 391 __HAL_UART_SEND_REQ(&UartHandle, UART_RXDATA_FLUSH_REQUEST);
mbed_official 181:a4cbdfbbd2f4 392 }
mbed_official 181:a4cbdfbbd2f4 393
mbed_official 402:09075a3b15e3 394 void serial_pinout_tx(PinName tx)
mbed_official 402:09075a3b15e3 395 {
mbed_official 181:a4cbdfbbd2f4 396 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 181:a4cbdfbbd2f4 397 }
mbed_official 181:a4cbdfbbd2f4 398
mbed_official 402:09075a3b15e3 399 void serial_break_set(serial_t *obj)
mbed_official 402:09075a3b15e3 400 {
mbed_official 181:a4cbdfbbd2f4 401 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 402 __HAL_UART_SEND_REQ(&UartHandle, UART_SENDBREAK_REQUEST);
mbed_official 181:a4cbdfbbd2f4 403 }
mbed_official 181:a4cbdfbbd2f4 404
mbed_official 402:09075a3b15e3 405 void serial_break_clear(serial_t *obj)
mbed_official 402:09075a3b15e3 406 {
mbed_official 181:a4cbdfbbd2f4 407 }
mbed_official 181:a4cbdfbbd2f4 408
mbed_official 181:a4cbdfbbd2f4 409 #endif