Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/hal/TARGET_STM/TARGET_STM32F3/serial_api.c@7:cf567a118ec7, 2015-10-16 (annotated)

Committer:
mbed_official
Date:
Fri Oct 16 07:45:35 2015 +0100
Revision:
7:cf567a118ec7
Parent:
0:9b334a45a8ff
Child:
144:ef7eb2e8f9f7
Synchronized with git revision 856efdc67db6f7de450e78624ace39a2917f2f33



Full URL: https://github.com/mbedmicro/mbed/commit/856efdc67db6f7de450e78624ace39a2917f2f33/



NUCLEO_F303K8 - Dev nucleo f303k8

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 *******************************************************************************
bogdanm 0:9b334a45a8ff 3 * Copyright (c) 2014, STMicroelectronics
bogdanm 0:9b334a45a8ff 4 * All rights reserved.
bogdanm 0:9b334a45a8ff 5 *
bogdanm 0:9b334a45a8ff 6 * Redistribution and use in source and binary forms, with or without
bogdanm 0:9b334a45a8ff 7 * modification, are permitted provided that the following conditions are met:
bogdanm 0:9b334a45a8ff 8 *
bogdanm 0:9b334a45a8ff 9 * 1. Redistributions of source code must retain the above copyright notice,
bogdanm 0:9b334a45a8ff 10 * this list of conditions and the following disclaimer.
bogdanm 0:9b334a45a8ff 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
bogdanm 0:9b334a45a8ff 12 * this list of conditions and the following disclaimer in the documentation
bogdanm 0:9b334a45a8ff 13 * and/or other materials provided with the distribution.
bogdanm 0:9b334a45a8ff 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
bogdanm 0:9b334a45a8ff 15 * may be used to endorse or promote products derived from this software
bogdanm 0:9b334a45a8ff 16 * without specific prior written permission.
bogdanm 0:9b334a45a8ff 17 *
bogdanm 0:9b334a45a8ff 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
bogdanm 0:9b334a45a8ff 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
bogdanm 0:9b334a45a8ff 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
bogdanm 0:9b334a45a8ff 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
bogdanm 0:9b334a45a8ff 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
bogdanm 0:9b334a45a8ff 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
bogdanm 0:9b334a45a8ff 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
bogdanm 0:9b334a45a8ff 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
bogdanm 0:9b334a45a8ff 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
bogdanm 0:9b334a45a8ff 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
bogdanm 0:9b334a45a8ff 28 *******************************************************************************
bogdanm 0:9b334a45a8ff 29 */
bogdanm 0:9b334a45a8ff 30 #include "mbed_assert.h"
bogdanm 0:9b334a45a8ff 31 #include "serial_api.h"
bogdanm 0:9b334a45a8ff 32
bogdanm 0:9b334a45a8ff 33 #if DEVICE_SERIAL
bogdanm 0:9b334a45a8ff 34
bogdanm 0:9b334a45a8ff 35 #include "cmsis.h"
bogdanm 0:9b334a45a8ff 36 #include "pinmap.h"
bogdanm 0:9b334a45a8ff 37 #include <string.h>
bogdanm 0:9b334a45a8ff 38 #include "PeripheralPins.h"
bogdanm 0:9b334a45a8ff 39
bogdanm 0:9b334a45a8ff 40 #define UART_NUM (5)
bogdanm 0:9b334a45a8ff 41
bogdanm 0:9b334a45a8ff 42 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0, 0, 0};
bogdanm 0:9b334a45a8ff 43
bogdanm 0:9b334a45a8ff 44 static uart_irq_handler irq_handler;
bogdanm 0:9b334a45a8ff 45
bogdanm 0:9b334a45a8ff 46 UART_HandleTypeDef UartHandle;
bogdanm 0:9b334a45a8ff 47
bogdanm 0:9b334a45a8ff 48 int stdio_uart_inited = 0;
bogdanm 0:9b334a45a8ff 49 serial_t stdio_uart;
bogdanm 0:9b334a45a8ff 50
bogdanm 0:9b334a45a8ff 51 static void init_uart(serial_t *obj)
bogdanm 0:9b334a45a8ff 52 {
bogdanm 0:9b334a45a8ff 53 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 54
bogdanm 0:9b334a45a8ff 55 UartHandle.Init.BaudRate = obj->baudrate;
bogdanm 0:9b334a45a8ff 56 UartHandle.Init.WordLength = obj->databits;
bogdanm 0:9b334a45a8ff 57 UartHandle.Init.StopBits = obj->stopbits;
bogdanm 0:9b334a45a8ff 58 UartHandle.Init.Parity = obj->parity;
bogdanm 0:9b334a45a8ff 59 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
bogdanm 0:9b334a45a8ff 60
bogdanm 0:9b334a45a8ff 61 if (obj->pin_rx == NC) {
bogdanm 0:9b334a45a8ff 62 UartHandle.Init.Mode = UART_MODE_TX;
bogdanm 0:9b334a45a8ff 63 } else if (obj->pin_tx == NC) {
bogdanm 0:9b334a45a8ff 64 UartHandle.Init.Mode = UART_MODE_RX;
bogdanm 0:9b334a45a8ff 65 } else {
bogdanm 0:9b334a45a8ff 66 UartHandle.Init.Mode = UART_MODE_TX_RX;
bogdanm 0:9b334a45a8ff 67 }
bogdanm 0:9b334a45a8ff 68
bogdanm 0:9b334a45a8ff 69 // Disable the reception overrun detection
bogdanm 0:9b334a45a8ff 70 UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_RXOVERRUNDISABLE_INIT;
bogdanm 0:9b334a45a8ff 71 UartHandle.AdvancedInit.OverrunDisable = UART_ADVFEATURE_OVERRUN_DISABLE;
bogdanm 0:9b334a45a8ff 72
bogdanm 0:9b334a45a8ff 73 HAL_UART_Init(&UartHandle);
bogdanm 0:9b334a45a8ff 74 }
bogdanm 0:9b334a45a8ff 75
bogdanm 0:9b334a45a8ff 76 void serial_init(serial_t *obj, PinName tx, PinName rx)
bogdanm 0:9b334a45a8ff 77 {
bogdanm 0:9b334a45a8ff 78 // Determine the UART to use (UART_1, UART_2, ...)
bogdanm 0:9b334a45a8ff 79 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
bogdanm 0:9b334a45a8ff 80 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
bogdanm 0:9b334a45a8ff 81
bogdanm 0:9b334a45a8ff 82 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
bogdanm 0:9b334a45a8ff 83 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
bogdanm 0:9b334a45a8ff 84 MBED_ASSERT(obj->uart != (UARTName)NC);
bogdanm 0:9b334a45a8ff 85
bogdanm 0:9b334a45a8ff 86 // Enable USART clock + switch to SystemClock
bogdanm 0:9b334a45a8ff 87 if (obj->uart == UART_1) {
bogdanm 0:9b334a45a8ff 88 __USART1_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 89 __HAL_RCC_USART1_CONFIG(RCC_USART1CLKSOURCE_SYSCLK);
bogdanm 0:9b334a45a8ff 90 obj->index = 0;
bogdanm 0:9b334a45a8ff 91 }
bogdanm 0:9b334a45a8ff 92 if (obj->uart == UART_2) {
bogdanm 0:9b334a45a8ff 93 __USART2_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 94 __HAL_RCC_USART2_CONFIG(RCC_USART2CLKSOURCE_SYSCLK);
bogdanm 0:9b334a45a8ff 95 obj->index = 1;
bogdanm 0:9b334a45a8ff 96 }
mbed_official 7:cf567a118ec7 97 #if defined(UART3_BASE)
bogdanm 0:9b334a45a8ff 98 if (obj->uart == UART_3) {
bogdanm 0:9b334a45a8ff 99 __USART3_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 100 __HAL_RCC_USART3_CONFIG(RCC_USART3CLKSOURCE_SYSCLK);
bogdanm 0:9b334a45a8ff 101 obj->index = 2;
bogdanm 0:9b334a45a8ff 102 }
mbed_official 7:cf567a118ec7 103 #endif
bogdanm 0:9b334a45a8ff 104 #if defined(UART4_BASE)
bogdanm 0:9b334a45a8ff 105 if (obj->uart == UART_4) {
bogdanm 0:9b334a45a8ff 106 __UART4_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 107 __HAL_RCC_UART4_CONFIG(RCC_UART4CLKSOURCE_SYSCLK);
bogdanm 0:9b334a45a8ff 108 obj->index = 3;
bogdanm 0:9b334a45a8ff 109 }
bogdanm 0:9b334a45a8ff 110 #endif
bogdanm 0:9b334a45a8ff 111 #if defined(UART5_BASE)
bogdanm 0:9b334a45a8ff 112 if (obj->uart == UART_5) {
bogdanm 0:9b334a45a8ff 113 __UART5_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 114 __HAL_RCC_UART5_CONFIG(RCC_UART5CLKSOURCE_SYSCLK);
bogdanm 0:9b334a45a8ff 115 obj->index = 4;
bogdanm 0:9b334a45a8ff 116 }
bogdanm 0:9b334a45a8ff 117 #endif
bogdanm 0:9b334a45a8ff 118
bogdanm 0:9b334a45a8ff 119 // Configure the UART pins
bogdanm 0:9b334a45a8ff 120 pinmap_pinout(tx, PinMap_UART_TX);
bogdanm 0:9b334a45a8ff 121 pinmap_pinout(rx, PinMap_UART_RX);
bogdanm 0:9b334a45a8ff 122 if (tx != NC) {
bogdanm 0:9b334a45a8ff 123 pin_mode(tx, PullUp);
bogdanm 0:9b334a45a8ff 124 }
bogdanm 0:9b334a45a8ff 125 if (rx != NC) {
bogdanm 0:9b334a45a8ff 126 pin_mode(rx, PullUp);
bogdanm 0:9b334a45a8ff 127 }
bogdanm 0:9b334a45a8ff 128
bogdanm 0:9b334a45a8ff 129 // Configure UART
bogdanm 0:9b334a45a8ff 130 obj->baudrate = 9600;
bogdanm 0:9b334a45a8ff 131 obj->databits = UART_WORDLENGTH_8B;
bogdanm 0:9b334a45a8ff 132 obj->stopbits = UART_STOPBITS_1;
bogdanm 0:9b334a45a8ff 133 obj->parity = UART_PARITY_NONE;
bogdanm 0:9b334a45a8ff 134
bogdanm 0:9b334a45a8ff 135 obj->pin_tx = tx;
bogdanm 0:9b334a45a8ff 136 obj->pin_rx = rx;
bogdanm 0:9b334a45a8ff 137
bogdanm 0:9b334a45a8ff 138 init_uart(obj);
bogdanm 0:9b334a45a8ff 139
bogdanm 0:9b334a45a8ff 140 // For stdio management
bogdanm 0:9b334a45a8ff 141 if (obj->uart == STDIO_UART) {
bogdanm 0:9b334a45a8ff 142 stdio_uart_inited = 1;
bogdanm 0:9b334a45a8ff 143 memcpy(&stdio_uart, obj, sizeof(serial_t));
bogdanm 0:9b334a45a8ff 144 }
bogdanm 0:9b334a45a8ff 145 }
bogdanm 0:9b334a45a8ff 146
bogdanm 0:9b334a45a8ff 147 void serial_free(serial_t *obj)
bogdanm 0:9b334a45a8ff 148 {
bogdanm 0:9b334a45a8ff 149 // Reset UART and disable clock
bogdanm 0:9b334a45a8ff 150 if (obj->uart == UART_1) {
bogdanm 0:9b334a45a8ff 151 __USART1_FORCE_RESET();
bogdanm 0:9b334a45a8ff 152 __USART1_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 153 __USART1_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 154 }
bogdanm 0:9b334a45a8ff 155 if (obj->uart == UART_2) {
bogdanm 0:9b334a45a8ff 156 __USART2_FORCE_RESET();
bogdanm 0:9b334a45a8ff 157 __USART2_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 158 __USART2_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 159 }
mbed_official 7:cf567a118ec7 160 #if defined(UART3_BASE)
bogdanm 0:9b334a45a8ff 161 if (obj->uart == UART_3) {
bogdanm 0:9b334a45a8ff 162 __USART3_FORCE_RESET();
bogdanm 0:9b334a45a8ff 163 __USART3_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 164 __USART3_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 165 }
mbed_official 7:cf567a118ec7 166 #endif
bogdanm 0:9b334a45a8ff 167 #if defined(UART4_BASE)
bogdanm 0:9b334a45a8ff 168 if (obj->uart == UART_4) {
bogdanm 0:9b334a45a8ff 169 __UART4_FORCE_RESET();
bogdanm 0:9b334a45a8ff 170 __UART4_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 171 __UART4_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 172 }
bogdanm 0:9b334a45a8ff 173 #endif
bogdanm 0:9b334a45a8ff 174 #if defined(UART5_BASE)
bogdanm 0:9b334a45a8ff 175 if (obj->uart == UART_5) {
bogdanm 0:9b334a45a8ff 176 __UART5_FORCE_RESET();
bogdanm 0:9b334a45a8ff 177 __UART5_RELEASE_RESET();
bogdanm 0:9b334a45a8ff 178 __UART5_CLK_DISABLE();
bogdanm 0:9b334a45a8ff 179 }
bogdanm 0:9b334a45a8ff 180 #endif
bogdanm 0:9b334a45a8ff 181
bogdanm 0:9b334a45a8ff 182 // Configure GPIOs
bogdanm 0:9b334a45a8ff 183 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
bogdanm 0:9b334a45a8ff 184 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
bogdanm 0:9b334a45a8ff 185
bogdanm 0:9b334a45a8ff 186 serial_irq_ids[obj->index] = 0;
bogdanm 0:9b334a45a8ff 187 }
bogdanm 0:9b334a45a8ff 188
bogdanm 0:9b334a45a8ff 189 void serial_baud(serial_t *obj, int baudrate)
bogdanm 0:9b334a45a8ff 190 {
bogdanm 0:9b334a45a8ff 191 obj->baudrate = baudrate;
bogdanm 0:9b334a45a8ff 192 init_uart(obj);
bogdanm 0:9b334a45a8ff 193 }
bogdanm 0:9b334a45a8ff 194
bogdanm 0:9b334a45a8ff 195 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
bogdanm 0:9b334a45a8ff 196 {
bogdanm 0:9b334a45a8ff 197 if (data_bits == 9) {
bogdanm 0:9b334a45a8ff 198 obj->databits = UART_WORDLENGTH_9B;
bogdanm 0:9b334a45a8ff 199 } else {
bogdanm 0:9b334a45a8ff 200 obj->databits = UART_WORDLENGTH_8B;
bogdanm 0:9b334a45a8ff 201 }
bogdanm 0:9b334a45a8ff 202
bogdanm 0:9b334a45a8ff 203 switch (parity) {
bogdanm 0:9b334a45a8ff 204 case ParityOdd:
bogdanm 0:9b334a45a8ff 205 case ParityForced0:
bogdanm 0:9b334a45a8ff 206 obj->parity = UART_PARITY_ODD;
bogdanm 0:9b334a45a8ff 207 break;
bogdanm 0:9b334a45a8ff 208 case ParityEven:
bogdanm 0:9b334a45a8ff 209 case ParityForced1:
bogdanm 0:9b334a45a8ff 210 obj->parity = UART_PARITY_EVEN;
bogdanm 0:9b334a45a8ff 211 break;
bogdanm 0:9b334a45a8ff 212 default: // ParityNone
bogdanm 0:9b334a45a8ff 213 obj->parity = UART_PARITY_NONE;
bogdanm 0:9b334a45a8ff 214 break;
bogdanm 0:9b334a45a8ff 215 }
bogdanm 0:9b334a45a8ff 216
bogdanm 0:9b334a45a8ff 217 if (stop_bits == 2) {
bogdanm 0:9b334a45a8ff 218 obj->stopbits = UART_STOPBITS_2;
bogdanm 0:9b334a45a8ff 219 } else {
bogdanm 0:9b334a45a8ff 220 obj->stopbits = UART_STOPBITS_1;
bogdanm 0:9b334a45a8ff 221 }
bogdanm 0:9b334a45a8ff 222
bogdanm 0:9b334a45a8ff 223 init_uart(obj);
bogdanm 0:9b334a45a8ff 224 }
bogdanm 0:9b334a45a8ff 225
bogdanm 0:9b334a45a8ff 226 /******************************************************************************
bogdanm 0:9b334a45a8ff 227 * INTERRUPTS HANDLING
bogdanm 0:9b334a45a8ff 228 ******************************************************************************/
bogdanm 0:9b334a45a8ff 229
bogdanm 0:9b334a45a8ff 230 static void uart_irq(UARTName name, int id)
bogdanm 0:9b334a45a8ff 231 {
bogdanm 0:9b334a45a8ff 232 UartHandle.Instance = (USART_TypeDef *)name;
bogdanm 0:9b334a45a8ff 233 if (serial_irq_ids[id] != 0) {
bogdanm 0:9b334a45a8ff 234 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
bogdanm 0:9b334a45a8ff 235 irq_handler(serial_irq_ids[id], TxIrq);
bogdanm 0:9b334a45a8ff 236 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TC);
bogdanm 0:9b334a45a8ff 237 }
bogdanm 0:9b334a45a8ff 238 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
bogdanm 0:9b334a45a8ff 239 irq_handler(serial_irq_ids[id], RxIrq);
bogdanm 0:9b334a45a8ff 240 volatile uint32_t tmpval = UartHandle.Instance->RDR; // Clear RXNE bit
bogdanm 0:9b334a45a8ff 241 }
bogdanm 0:9b334a45a8ff 242 }
bogdanm 0:9b334a45a8ff 243 }
bogdanm 0:9b334a45a8ff 244
bogdanm 0:9b334a45a8ff 245 static void uart1_irq(void)
bogdanm 0:9b334a45a8ff 246 {
bogdanm 0:9b334a45a8ff 247 uart_irq(UART_1, 0);
bogdanm 0:9b334a45a8ff 248 }
bogdanm 0:9b334a45a8ff 249
bogdanm 0:9b334a45a8ff 250 static void uart2_irq(void)
bogdanm 0:9b334a45a8ff 251 {
bogdanm 0:9b334a45a8ff 252 uart_irq(UART_2, 1);
bogdanm 0:9b334a45a8ff 253 }
bogdanm 0:9b334a45a8ff 254
mbed_official 7:cf567a118ec7 255 #if defined(UART3_BASE)
bogdanm 0:9b334a45a8ff 256 static void uart3_irq(void)
bogdanm 0:9b334a45a8ff 257 {
bogdanm 0:9b334a45a8ff 258 uart_irq(UART_3, 2);
bogdanm 0:9b334a45a8ff 259 }
mbed_official 7:cf567a118ec7 260 #endif
bogdanm 0:9b334a45a8ff 261
bogdanm 0:9b334a45a8ff 262 #if defined(UART4_BASE)
bogdanm 0:9b334a45a8ff 263 static void uart4_irq(void)
bogdanm 0:9b334a45a8ff 264 {
bogdanm 0:9b334a45a8ff 265 uart_irq(UART_4, 3);
bogdanm 0:9b334a45a8ff 266 }
bogdanm 0:9b334a45a8ff 267 #endif
bogdanm 0:9b334a45a8ff 268
bogdanm 0:9b334a45a8ff 269 #if defined(UART5_BASE)
bogdanm 0:9b334a45a8ff 270 static void uart5_irq(void)
bogdanm 0:9b334a45a8ff 271 {
bogdanm 0:9b334a45a8ff 272 uart_irq(UART_5, 4);
bogdanm 0:9b334a45a8ff 273 }
bogdanm 0:9b334a45a8ff 274 #endif
bogdanm 0:9b334a45a8ff 275
bogdanm 0:9b334a45a8ff 276 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
bogdanm 0:9b334a45a8ff 277 {
bogdanm 0:9b334a45a8ff 278 irq_handler = handler;
bogdanm 0:9b334a45a8ff 279 serial_irq_ids[obj->index] = id;
bogdanm 0:9b334a45a8ff 280 }
bogdanm 0:9b334a45a8ff 281
bogdanm 0:9b334a45a8ff 282 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
bogdanm 0:9b334a45a8ff 283 {
bogdanm 0:9b334a45a8ff 284 IRQn_Type irq_n = (IRQn_Type)0;
bogdanm 0:9b334a45a8ff 285 uint32_t vector = 0;
bogdanm 0:9b334a45a8ff 286
bogdanm 0:9b334a45a8ff 287 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 288
bogdanm 0:9b334a45a8ff 289 if (obj->uart == UART_1) {
bogdanm 0:9b334a45a8ff 290 irq_n = USART1_IRQn;
bogdanm 0:9b334a45a8ff 291 vector = (uint32_t)&uart1_irq;
bogdanm 0:9b334a45a8ff 292 }
bogdanm 0:9b334a45a8ff 293
bogdanm 0:9b334a45a8ff 294 if (obj->uart == UART_2) {
bogdanm 0:9b334a45a8ff 295 irq_n = USART2_IRQn;
bogdanm 0:9b334a45a8ff 296 vector = (uint32_t)&uart2_irq;
bogdanm 0:9b334a45a8ff 297 }
bogdanm 0:9b334a45a8ff 298
mbed_official 7:cf567a118ec7 299 #if defined(UART3_BASE)
bogdanm 0:9b334a45a8ff 300 if (obj->uart == UART_3) {
bogdanm 0:9b334a45a8ff 301 irq_n = USART3_IRQn;
bogdanm 0:9b334a45a8ff 302 vector = (uint32_t)&uart3_irq;
bogdanm 0:9b334a45a8ff 303 }
mbed_official 7:cf567a118ec7 304 #endif
bogdanm 0:9b334a45a8ff 305
bogdanm 0:9b334a45a8ff 306 #if defined(UART4_BASE)
bogdanm 0:9b334a45a8ff 307 if (obj->uart == UART_4) {
bogdanm 0:9b334a45a8ff 308 irq_n = UART4_IRQn;
bogdanm 0:9b334a45a8ff 309 vector = (uint32_t)&uart4_irq;
bogdanm 0:9b334a45a8ff 310 }
bogdanm 0:9b334a45a8ff 311 #endif
bogdanm 0:9b334a45a8ff 312
bogdanm 0:9b334a45a8ff 313 #if defined(UART5_BASE)
bogdanm 0:9b334a45a8ff 314 if (obj->uart == UART_5) {
bogdanm 0:9b334a45a8ff 315 irq_n = UART5_IRQn;
bogdanm 0:9b334a45a8ff 316 vector = (uint32_t)&uart5_irq;
bogdanm 0:9b334a45a8ff 317 }
bogdanm 0:9b334a45a8ff 318 #endif
bogdanm 0:9b334a45a8ff 319
bogdanm 0:9b334a45a8ff 320 if (enable) {
bogdanm 0:9b334a45a8ff 321
bogdanm 0:9b334a45a8ff 322 if (irq == RxIrq) {
bogdanm 0:9b334a45a8ff 323 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
bogdanm 0:9b334a45a8ff 324 } else { // TxIrq
bogdanm 0:9b334a45a8ff 325 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
bogdanm 0:9b334a45a8ff 326 }
bogdanm 0:9b334a45a8ff 327
bogdanm 0:9b334a45a8ff 328 NVIC_SetVector(irq_n, vector);
bogdanm 0:9b334a45a8ff 329 NVIC_EnableIRQ(irq_n);
bogdanm 0:9b334a45a8ff 330
bogdanm 0:9b334a45a8ff 331 } else { // disable
bogdanm 0:9b334a45a8ff 332
bogdanm 0:9b334a45a8ff 333 int all_disabled = 0;
bogdanm 0:9b334a45a8ff 334
bogdanm 0:9b334a45a8ff 335 if (irq == RxIrq) {
bogdanm 0:9b334a45a8ff 336 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
bogdanm 0:9b334a45a8ff 337 // Check if TxIrq is disabled too
bogdanm 0:9b334a45a8ff 338 if ((UartHandle.Instance->CR1 & USART_CR1_TCIE) == 0) all_disabled = 1;
bogdanm 0:9b334a45a8ff 339 } else { // TxIrq
bogdanm 0:9b334a45a8ff 340 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TC);
bogdanm 0:9b334a45a8ff 341 // Check if RxIrq is disabled too
bogdanm 0:9b334a45a8ff 342 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
bogdanm 0:9b334a45a8ff 343 }
bogdanm 0:9b334a45a8ff 344
bogdanm 0:9b334a45a8ff 345 if (all_disabled) NVIC_DisableIRQ(irq_n);
bogdanm 0:9b334a45a8ff 346
bogdanm 0:9b334a45a8ff 347 }
bogdanm 0:9b334a45a8ff 348 }
bogdanm 0:9b334a45a8ff 349
bogdanm 0:9b334a45a8ff 350 /******************************************************************************
bogdanm 0:9b334a45a8ff 351 * READ/WRITE
bogdanm 0:9b334a45a8ff 352 ******************************************************************************/
bogdanm 0:9b334a45a8ff 353
bogdanm 0:9b334a45a8ff 354 int serial_getc(serial_t *obj)
bogdanm 0:9b334a45a8ff 355 {
bogdanm 0:9b334a45a8ff 356 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 357 while (!serial_readable(obj));
bogdanm 0:9b334a45a8ff 358 if (obj->databits == UART_WORDLENGTH_8B) {
bogdanm 0:9b334a45a8ff 359 return (int)(uart->RDR & (uint8_t)0xFF);
bogdanm 0:9b334a45a8ff 360 } else {
bogdanm 0:9b334a45a8ff 361 return (int)(uart->RDR & (uint16_t)0x1FF);
bogdanm 0:9b334a45a8ff 362 }
bogdanm 0:9b334a45a8ff 363 }
bogdanm 0:9b334a45a8ff 364
bogdanm 0:9b334a45a8ff 365 void serial_putc(serial_t *obj, int c)
bogdanm 0:9b334a45a8ff 366 {
bogdanm 0:9b334a45a8ff 367 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 368 while (!serial_writable(obj));
bogdanm 0:9b334a45a8ff 369 if (obj->databits == UART_WORDLENGTH_8B) {
bogdanm 0:9b334a45a8ff 370 uart->TDR = (uint8_t)(c & (uint8_t)0xFF);
bogdanm 0:9b334a45a8ff 371 } else {
bogdanm 0:9b334a45a8ff 372 uart->TDR = (uint16_t)(c & (uint16_t)0x1FF);
bogdanm 0:9b334a45a8ff 373 }
bogdanm 0:9b334a45a8ff 374 }
bogdanm 0:9b334a45a8ff 375
bogdanm 0:9b334a45a8ff 376 int serial_readable(serial_t *obj)
bogdanm 0:9b334a45a8ff 377 {
bogdanm 0:9b334a45a8ff 378 int status;
bogdanm 0:9b334a45a8ff 379 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 380 // Check if data is received
bogdanm 0:9b334a45a8ff 381 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
bogdanm 0:9b334a45a8ff 382 return status;
bogdanm 0:9b334a45a8ff 383 }
bogdanm 0:9b334a45a8ff 384
bogdanm 0:9b334a45a8ff 385 int serial_writable(serial_t *obj)
bogdanm 0:9b334a45a8ff 386 {
bogdanm 0:9b334a45a8ff 387 int status;
bogdanm 0:9b334a45a8ff 388 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 389 // Check if data is transmitted
bogdanm 0:9b334a45a8ff 390 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
bogdanm 0:9b334a45a8ff 391 return status;
bogdanm 0:9b334a45a8ff 392 }
bogdanm 0:9b334a45a8ff 393
bogdanm 0:9b334a45a8ff 394 void serial_clear(serial_t *obj)
bogdanm 0:9b334a45a8ff 395 {
bogdanm 0:9b334a45a8ff 396 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 397 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TC);
bogdanm 0:9b334a45a8ff 398 __HAL_UART_SEND_REQ(&UartHandle, UART_RXDATA_FLUSH_REQUEST);
bogdanm 0:9b334a45a8ff 399 }
bogdanm 0:9b334a45a8ff 400
bogdanm 0:9b334a45a8ff 401 void serial_pinout_tx(PinName tx)
bogdanm 0:9b334a45a8ff 402 {
bogdanm 0:9b334a45a8ff 403 pinmap_pinout(tx, PinMap_UART_TX);
bogdanm 0:9b334a45a8ff 404 }
bogdanm 0:9b334a45a8ff 405
bogdanm 0:9b334a45a8ff 406 void serial_break_set(serial_t *obj)
bogdanm 0:9b334a45a8ff 407 {
bogdanm 0:9b334a45a8ff 408 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
bogdanm 0:9b334a45a8ff 409 HAL_LIN_SendBreak(&UartHandle);
bogdanm 0:9b334a45a8ff 410 }
bogdanm 0:9b334a45a8ff 411
bogdanm 0:9b334a45a8ff 412 void serial_break_clear(serial_t *obj)
bogdanm 0:9b334a45a8ff 413 {
bogdanm 0:9b334a45a8ff 414 }
bogdanm 0:9b334a45a8ff 415
bogdanm 0:9b334a45a8ff 416 #endif