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_F334R8/serial_api.c@237:f3da66175598, 2014-06-24 (annotated)

Committer:
mbed_official
Date:
Tue Jun 24 14:45:08 2014 +0100
Revision:
237:f3da66175598
Child:
293:2a9cf2ed1474
Synchronized with git revision 8ef659bca81f12dfc896b5a7af7c2abbd1a1b8b7



Full URL: https://github.com/mbedmicro/mbed/commit/8ef659bca81f12dfc896b5a7af7c2abbd1a1b8b7/



[NUCLEO_F334R8] Add platform files

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 237:f3da66175598 1 /* mbed Microcontroller Library
mbed_official 237:f3da66175598 2 *******************************************************************************
mbed_official 237:f3da66175598 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 237:f3da66175598 4 * All rights reserved.
mbed_official 237:f3da66175598 5 *
mbed_official 237:f3da66175598 6 * Redistribution and use in source and binary forms, with or without
mbed_official 237:f3da66175598 7 * modification, are permitted provided that the following conditions are met:
mbed_official 237:f3da66175598 8 *
mbed_official 237:f3da66175598 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 237:f3da66175598 10 * this list of conditions and the following disclaimer.
mbed_official 237:f3da66175598 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 237:f3da66175598 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 237:f3da66175598 13 * and/or other materials provided with the distribution.
mbed_official 237:f3da66175598 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 237:f3da66175598 15 * may be used to endorse or promote products derived from this software
mbed_official 237:f3da66175598 16 * without specific prior written permission.
mbed_official 237:f3da66175598 17 *
mbed_official 237:f3da66175598 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 237:f3da66175598 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 237:f3da66175598 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 237:f3da66175598 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 237:f3da66175598 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 237:f3da66175598 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 237:f3da66175598 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 237:f3da66175598 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 237:f3da66175598 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 237:f3da66175598 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 237:f3da66175598 28 *******************************************************************************
mbed_official 237:f3da66175598 29 */
mbed_official 237:f3da66175598 30 #include "mbed_assert.h"
mbed_official 237:f3da66175598 31 #include "serial_api.h"
mbed_official 237:f3da66175598 32
mbed_official 237:f3da66175598 33 #if DEVICE_SERIAL
mbed_official 237:f3da66175598 34
mbed_official 237:f3da66175598 35 #include "cmsis.h"
mbed_official 237:f3da66175598 36 #include "pinmap.h"
mbed_official 237:f3da66175598 37 #include <string.h>
mbed_official 237:f3da66175598 38
mbed_official 237:f3da66175598 39 static const PinMap PinMap_UART_TX[] = {
mbed_official 237:f3da66175598 40 {PA_2, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
mbed_official 237:f3da66175598 41 {PA_9, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 237:f3da66175598 42 {PA_14, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
mbed_official 237:f3da66175598 43 {PB_3, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
mbed_official 237:f3da66175598 44 {PB_6, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 237:f3da66175598 45 {PB_9, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
mbed_official 237:f3da66175598 46 {PB_10, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
mbed_official 237:f3da66175598 47 {PC_4, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 237:f3da66175598 48 {PC_10, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
mbed_official 237:f3da66175598 49 {NC, NC, 0}
mbed_official 237:f3da66175598 50 };
mbed_official 237:f3da66175598 51
mbed_official 237:f3da66175598 52 static const PinMap PinMap_UART_RX[] = {
mbed_official 237:f3da66175598 53 {PA_3, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
mbed_official 237:f3da66175598 54 {PA_10, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 237:f3da66175598 55 {PA_15, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
mbed_official 237:f3da66175598 56 {PB_4, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART2)},
mbed_official 237:f3da66175598 57 {PB_7, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 237:f3da66175598 58 {PB_8, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
mbed_official 237:f3da66175598 59 {PB_11, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
mbed_official 237:f3da66175598 60 {PC_5, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART1)},
mbed_official 237:f3da66175598 61 {PC_11, UART_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_USART3)},
mbed_official 237:f3da66175598 62 {NC, NC, 0}
mbed_official 237:f3da66175598 63 };
mbed_official 237:f3da66175598 64
mbed_official 237:f3da66175598 65 #define UART_NUM (3)
mbed_official 237:f3da66175598 66
mbed_official 237:f3da66175598 67 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0};
mbed_official 237:f3da66175598 68
mbed_official 237:f3da66175598 69 static uart_irq_handler irq_handler;
mbed_official 237:f3da66175598 70
mbed_official 237:f3da66175598 71 UART_HandleTypeDef UartHandle;
mbed_official 237:f3da66175598 72
mbed_official 237:f3da66175598 73 int stdio_uart_inited = 0;
mbed_official 237:f3da66175598 74 serial_t stdio_uart;
mbed_official 237:f3da66175598 75
mbed_official 237:f3da66175598 76 static void init_uart(serial_t *obj)
mbed_official 237:f3da66175598 77 {
mbed_official 237:f3da66175598 78 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 237:f3da66175598 79
mbed_official 237:f3da66175598 80 UartHandle.Init.BaudRate = obj->baudrate;
mbed_official 237:f3da66175598 81 UartHandle.Init.WordLength = obj->databits;
mbed_official 237:f3da66175598 82 UartHandle.Init.StopBits = obj->stopbits;
mbed_official 237:f3da66175598 83 UartHandle.Init.Parity = obj->parity;
mbed_official 237:f3da66175598 84 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
mbed_official 237:f3da66175598 85
mbed_official 237:f3da66175598 86 if (obj->pin_rx == NC) {
mbed_official 237:f3da66175598 87 UartHandle.Init.Mode = UART_MODE_TX;
mbed_official 237:f3da66175598 88 } else if (obj->pin_tx == NC) {
mbed_official 237:f3da66175598 89 UartHandle.Init.Mode = UART_MODE_RX;
mbed_official 237:f3da66175598 90 } else {
mbed_official 237:f3da66175598 91 UartHandle.Init.Mode = UART_MODE_TX_RX;
mbed_official 237:f3da66175598 92 }
mbed_official 237:f3da66175598 93
mbed_official 237:f3da66175598 94 HAL_UART_Init(&UartHandle);
mbed_official 237:f3da66175598 95 }
mbed_official 237:f3da66175598 96
mbed_official 237:f3da66175598 97 void serial_init(serial_t *obj, PinName tx, PinName rx)
mbed_official 237:f3da66175598 98 {
mbed_official 237:f3da66175598 99 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 237:f3da66175598 100 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 237:f3da66175598 101 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 237:f3da66175598 102
mbed_official 237:f3da66175598 103 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 237:f3da66175598 104 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 237:f3da66175598 105 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 237:f3da66175598 106
mbed_official 237:f3da66175598 107 // Enable USART clock
mbed_official 237:f3da66175598 108 if (obj->uart == UART_1) {
mbed_official 237:f3da66175598 109 __USART1_CLK_ENABLE();
mbed_official 237:f3da66175598 110 obj->index = 0;
mbed_official 237:f3da66175598 111 }
mbed_official 237:f3da66175598 112 if (obj->uart == UART_2) {
mbed_official 237:f3da66175598 113 __USART2_CLK_ENABLE();
mbed_official 237:f3da66175598 114 obj->index = 1;
mbed_official 237:f3da66175598 115 }
mbed_official 237:f3da66175598 116 if (obj->uart == UART_3) {
mbed_official 237:f3da66175598 117 __USART3_CLK_ENABLE();
mbed_official 237:f3da66175598 118 obj->index = 2;
mbed_official 237:f3da66175598 119 }
mbed_official 237:f3da66175598 120
mbed_official 237:f3da66175598 121 // Configure the UART pins
mbed_official 237:f3da66175598 122 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 237:f3da66175598 123 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 237:f3da66175598 124 pin_mode(tx, PullUp);
mbed_official 237:f3da66175598 125 pin_mode(rx, PullUp);
mbed_official 237:f3da66175598 126
mbed_official 237:f3da66175598 127 // Configure UART
mbed_official 237:f3da66175598 128 obj->baudrate = 9600;
mbed_official 237:f3da66175598 129 obj->databits = UART_WORDLENGTH_8B;
mbed_official 237:f3da66175598 130 obj->stopbits = UART_STOPBITS_1;
mbed_official 237:f3da66175598 131 obj->parity = UART_PARITY_NONE;
mbed_official 237:f3da66175598 132
mbed_official 237:f3da66175598 133 obj->pin_tx = tx;
mbed_official 237:f3da66175598 134 obj->pin_rx = rx;
mbed_official 237:f3da66175598 135
mbed_official 237:f3da66175598 136 init_uart(obj);
mbed_official 237:f3da66175598 137
mbed_official 237:f3da66175598 138 // For stdio management
mbed_official 237:f3da66175598 139 if (obj->uart == STDIO_UART) {
mbed_official 237:f3da66175598 140 stdio_uart_inited = 1;
mbed_official 237:f3da66175598 141 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 237:f3da66175598 142 }
mbed_official 237:f3da66175598 143 }
mbed_official 237:f3da66175598 144
mbed_official 237:f3da66175598 145 void serial_free(serial_t *obj)
mbed_official 237:f3da66175598 146 {
mbed_official 237:f3da66175598 147 // Reset UART and disable clock
mbed_official 237:f3da66175598 148 if (obj->uart == UART_1) {
mbed_official 237:f3da66175598 149 __USART1_FORCE_RESET();
mbed_official 237:f3da66175598 150 __USART1_RELEASE_RESET();
mbed_official 237:f3da66175598 151 __USART1_CLK_DISABLE();
mbed_official 237:f3da66175598 152 }
mbed_official 237:f3da66175598 153 if (obj->uart == UART_2) {
mbed_official 237:f3da66175598 154 __USART2_FORCE_RESET();
mbed_official 237:f3da66175598 155 __USART2_RELEASE_RESET();
mbed_official 237:f3da66175598 156 __USART2_CLK_DISABLE();
mbed_official 237:f3da66175598 157 }
mbed_official 237:f3da66175598 158 if (obj->uart == UART_3) {
mbed_official 237:f3da66175598 159 __USART3_FORCE_RESET();
mbed_official 237:f3da66175598 160 __USART3_RELEASE_RESET();
mbed_official 237:f3da66175598 161 __USART3_CLK_DISABLE();
mbed_official 237:f3da66175598 162 }
mbed_official 237:f3da66175598 163
mbed_official 237:f3da66175598 164 // Configure GPIOs
mbed_official 237:f3da66175598 165 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 237:f3da66175598 166 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 237:f3da66175598 167
mbed_official 237:f3da66175598 168 serial_irq_ids[obj->index] = 0;
mbed_official 237:f3da66175598 169 }
mbed_official 237:f3da66175598 170
mbed_official 237:f3da66175598 171 void serial_baud(serial_t *obj, int baudrate)
mbed_official 237:f3da66175598 172 {
mbed_official 237:f3da66175598 173 obj->baudrate = baudrate;
mbed_official 237:f3da66175598 174 init_uart(obj);
mbed_official 237:f3da66175598 175 }
mbed_official 237:f3da66175598 176
mbed_official 237:f3da66175598 177 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
mbed_official 237:f3da66175598 178 {
mbed_official 237:f3da66175598 179 if (data_bits == 9) {
mbed_official 237:f3da66175598 180 obj->databits = UART_WORDLENGTH_9B;
mbed_official 237:f3da66175598 181 } else {
mbed_official 237:f3da66175598 182 obj->databits = UART_WORDLENGTH_8B;
mbed_official 237:f3da66175598 183 }
mbed_official 237:f3da66175598 184
mbed_official 237:f3da66175598 185 switch (parity) {
mbed_official 237:f3da66175598 186 case ParityOdd:
mbed_official 237:f3da66175598 187 case ParityForced0:
mbed_official 237:f3da66175598 188 obj->parity = UART_PARITY_ODD;
mbed_official 237:f3da66175598 189 break;
mbed_official 237:f3da66175598 190 case ParityEven:
mbed_official 237:f3da66175598 191 case ParityForced1:
mbed_official 237:f3da66175598 192 obj->parity = UART_PARITY_EVEN;
mbed_official 237:f3da66175598 193 break;
mbed_official 237:f3da66175598 194 default: // ParityNone
mbed_official 237:f3da66175598 195 obj->parity = UART_PARITY_NONE;
mbed_official 237:f3da66175598 196 break;
mbed_official 237:f3da66175598 197 }
mbed_official 237:f3da66175598 198
mbed_official 237:f3da66175598 199 if (stop_bits == 2) {
mbed_official 237:f3da66175598 200 obj->stopbits = UART_STOPBITS_2;
mbed_official 237:f3da66175598 201 } else {
mbed_official 237:f3da66175598 202 obj->stopbits = UART_STOPBITS_1;
mbed_official 237:f3da66175598 203 }
mbed_official 237:f3da66175598 204
mbed_official 237:f3da66175598 205 init_uart(obj);
mbed_official 237:f3da66175598 206 }
mbed_official 237:f3da66175598 207
mbed_official 237:f3da66175598 208 /******************************************************************************
mbed_official 237:f3da66175598 209 * INTERRUPTS HANDLING
mbed_official 237:f3da66175598 210 ******************************************************************************/
mbed_official 237:f3da66175598 211
mbed_official 237:f3da66175598 212 static void uart_irq(UARTName name, int id)
mbed_official 237:f3da66175598 213 {
mbed_official 237:f3da66175598 214 UartHandle.Instance = (USART_TypeDef *)name;
mbed_official 237:f3da66175598 215 if (serial_irq_ids[id] != 0) {
mbed_official 237:f3da66175598 216 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
mbed_official 237:f3da66175598 217 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 237:f3da66175598 218 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TC);
mbed_official 237:f3da66175598 219 }
mbed_official 237:f3da66175598 220 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
mbed_official 237:f3da66175598 221 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 237:f3da66175598 222 // [TODO] Check which line works the best
mbed_official 237:f3da66175598 223 __HAL_UART_SEND_REQ(&UartHandle, UART_RXDATA_FLUSH_REQUEST);
mbed_official 237:f3da66175598 224 //__HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_RXNE);
mbed_official 237:f3da66175598 225 }
mbed_official 237:f3da66175598 226 }
mbed_official 237:f3da66175598 227 }
mbed_official 237:f3da66175598 228
mbed_official 237:f3da66175598 229 static void uart1_irq(void)
mbed_official 237:f3da66175598 230 {
mbed_official 237:f3da66175598 231 uart_irq(UART_1, 0);
mbed_official 237:f3da66175598 232 }
mbed_official 237:f3da66175598 233
mbed_official 237:f3da66175598 234 static void uart2_irq(void)
mbed_official 237:f3da66175598 235 {
mbed_official 237:f3da66175598 236 uart_irq(UART_2, 1);
mbed_official 237:f3da66175598 237 }
mbed_official 237:f3da66175598 238
mbed_official 237:f3da66175598 239 static void uart3_irq(void)
mbed_official 237:f3da66175598 240 {
mbed_official 237:f3da66175598 241 uart_irq(UART_3, 2);
mbed_official 237:f3da66175598 242 }
mbed_official 237:f3da66175598 243
mbed_official 237:f3da66175598 244 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
mbed_official 237:f3da66175598 245 {
mbed_official 237:f3da66175598 246 irq_handler = handler;
mbed_official 237:f3da66175598 247 serial_irq_ids[obj->index] = id;
mbed_official 237:f3da66175598 248 }
mbed_official 237:f3da66175598 249
mbed_official 237:f3da66175598 250 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
mbed_official 237:f3da66175598 251 {
mbed_official 237:f3da66175598 252 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 237:f3da66175598 253 uint32_t vector = 0;
mbed_official 237:f3da66175598 254
mbed_official 237:f3da66175598 255 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 237:f3da66175598 256
mbed_official 237:f3da66175598 257 if (obj->uart == UART_1) {
mbed_official 237:f3da66175598 258 irq_n = USART1_IRQn;
mbed_official 237:f3da66175598 259 vector = (uint32_t)&uart1_irq;
mbed_official 237:f3da66175598 260 }
mbed_official 237:f3da66175598 261
mbed_official 237:f3da66175598 262 if (obj->uart == UART_2) {
mbed_official 237:f3da66175598 263 irq_n = USART2_IRQn;
mbed_official 237:f3da66175598 264 vector = (uint32_t)&uart2_irq;
mbed_official 237:f3da66175598 265 }
mbed_official 237:f3da66175598 266
mbed_official 237:f3da66175598 267 if (obj->uart == UART_3) {
mbed_official 237:f3da66175598 268 irq_n = USART3_IRQn;
mbed_official 237:f3da66175598 269 vector = (uint32_t)&uart3_irq;
mbed_official 237:f3da66175598 270 }
mbed_official 237:f3da66175598 271
mbed_official 237:f3da66175598 272 if (enable) {
mbed_official 237:f3da66175598 273
mbed_official 237:f3da66175598 274 if (irq == RxIrq) {
mbed_official 237:f3da66175598 275 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 237:f3da66175598 276 } else { // TxIrq
mbed_official 237:f3da66175598 277 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 237:f3da66175598 278 }
mbed_official 237:f3da66175598 279
mbed_official 237:f3da66175598 280 NVIC_SetVector(irq_n, vector);
mbed_official 237:f3da66175598 281 NVIC_EnableIRQ(irq_n);
mbed_official 237:f3da66175598 282
mbed_official 237:f3da66175598 283 } else { // disable
mbed_official 237:f3da66175598 284
mbed_official 237:f3da66175598 285 int all_disabled = 0;
mbed_official 237:f3da66175598 286
mbed_official 237:f3da66175598 287 if (irq == RxIrq) {
mbed_official 237:f3da66175598 288 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 237:f3da66175598 289 // Check if TxIrq is disabled too
mbed_official 237:f3da66175598 290 if ((UartHandle.Instance->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 237:f3da66175598 291 } else { // TxIrq
mbed_official 237:f3da66175598 292 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TXE);
mbed_official 237:f3da66175598 293 // Check if RxIrq is disabled too
mbed_official 237:f3da66175598 294 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 237:f3da66175598 295 }
mbed_official 237:f3da66175598 296
mbed_official 237:f3da66175598 297 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 237:f3da66175598 298
mbed_official 237:f3da66175598 299 }
mbed_official 237:f3da66175598 300 }
mbed_official 237:f3da66175598 301
mbed_official 237:f3da66175598 302 /******************************************************************************
mbed_official 237:f3da66175598 303 * READ/WRITE
mbed_official 237:f3da66175598 304 ******************************************************************************/
mbed_official 237:f3da66175598 305
mbed_official 237:f3da66175598 306 int serial_getc(serial_t *obj)
mbed_official 237:f3da66175598 307 {
mbed_official 237:f3da66175598 308 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 237:f3da66175598 309 while (!serial_readable(obj));
mbed_official 237:f3da66175598 310 if (obj->databits == UART_WORDLENGTH_8B) {
mbed_official 237:f3da66175598 311 return (int)(uart->RDR & (uint8_t)0xFF);
mbed_official 237:f3da66175598 312 } else {
mbed_official 237:f3da66175598 313 return (int)(uart->RDR & (uint16_t)0x1FF);
mbed_official 237:f3da66175598 314 }
mbed_official 237:f3da66175598 315 }
mbed_official 237:f3da66175598 316
mbed_official 237:f3da66175598 317 void serial_putc(serial_t *obj, int c)
mbed_official 237:f3da66175598 318 {
mbed_official 237:f3da66175598 319 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 237:f3da66175598 320 while (!serial_writable(obj));
mbed_official 237:f3da66175598 321 if (obj->databits == UART_WORDLENGTH_8B) {
mbed_official 237:f3da66175598 322 uart->TDR = (uint8_t)(c & (uint8_t)0xFF);
mbed_official 237:f3da66175598 323 } else {
mbed_official 237:f3da66175598 324 uart->TDR = (uint16_t)(c & (uint16_t)0x1FF);
mbed_official 237:f3da66175598 325 }
mbed_official 237:f3da66175598 326 }
mbed_official 237:f3da66175598 327
mbed_official 237:f3da66175598 328 int serial_readable(serial_t *obj)
mbed_official 237:f3da66175598 329 {
mbed_official 237:f3da66175598 330 int status;
mbed_official 237:f3da66175598 331 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 237:f3da66175598 332 // Check if data is received
mbed_official 237:f3da66175598 333 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 237:f3da66175598 334 return status;
mbed_official 237:f3da66175598 335 }
mbed_official 237:f3da66175598 336
mbed_official 237:f3da66175598 337 int serial_writable(serial_t *obj)
mbed_official 237:f3da66175598 338 {
mbed_official 237:f3da66175598 339 int status;
mbed_official 237:f3da66175598 340 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 237:f3da66175598 341 // Check if data is transmitted
mbed_official 237:f3da66175598 342 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 237:f3da66175598 343 return status;
mbed_official 237:f3da66175598 344 }
mbed_official 237:f3da66175598 345
mbed_official 237:f3da66175598 346 void serial_clear(serial_t *obj)
mbed_official 237:f3da66175598 347 {
mbed_official 237:f3da66175598 348 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 237:f3da66175598 349 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TXE);
mbed_official 237:f3da66175598 350 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_RXNE);
mbed_official 237:f3da66175598 351 }
mbed_official 237:f3da66175598 352
mbed_official 237:f3da66175598 353 void serial_pinout_tx(PinName tx)
mbed_official 237:f3da66175598 354 {
mbed_official 237:f3da66175598 355 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 237:f3da66175598 356 }
mbed_official 237:f3da66175598 357
mbed_official 237:f3da66175598 358 void serial_break_set(serial_t *obj)
mbed_official 237:f3da66175598 359 {
mbed_official 237:f3da66175598 360 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 237:f3da66175598 361 HAL_LIN_SendBreak(&UartHandle);
mbed_official 237:f3da66175598 362 }
mbed_official 237:f3da66175598 363
mbed_official 237:f3da66175598 364 void serial_break_clear(serial_t *obj)
mbed_official 237:f3da66175598 365 {
mbed_official 237:f3da66175598 366 }
mbed_official 237:f3da66175598 367
mbed_official 237:f3da66175598 368 #endif