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@293:2a9cf2ed1474, 2014-08-21 (annotated)

Committer:
mbed_official
Date:
Thu Aug 21 10:45:06 2014 +0100
Revision:
293:2a9cf2ed1474
Parent:
237:f3da66175598 
Synchronized with git revision 0f8a06d8186efc5ba0f63d93600e113de217fb45



Full URL: https://github.com/mbedmicro/mbed/commit/0f8a06d8186efc5ba0f63d93600e113de217fb45/



[NUCLEOs] Improvement of Serial hal

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 293:2a9cf2ed1474 94 // Disable the reception overrun detection
mbed_official 293:2a9cf2ed1474 95 UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_RXOVERRUNDISABLE_INIT;
mbed_official 293:2a9cf2ed1474 96 UartHandle.AdvancedInit.OverrunDisable = UART_ADVFEATURE_OVERRUN_DISABLE;
mbed_official 293:2a9cf2ed1474 97
mbed_official 237:f3da66175598 98 HAL_UART_Init(&UartHandle);
mbed_official 237:f3da66175598 99 }
mbed_official 237:f3da66175598 100
mbed_official 237:f3da66175598 101 void serial_init(serial_t *obj, PinName tx, PinName rx)
mbed_official 237:f3da66175598 102 {
mbed_official 237:f3da66175598 103 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 237:f3da66175598 104 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 237:f3da66175598 105 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 237:f3da66175598 106
mbed_official 237:f3da66175598 107 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 237:f3da66175598 108 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 237:f3da66175598 109 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 237:f3da66175598 110
mbed_official 237:f3da66175598 111 // Enable USART clock
mbed_official 237:f3da66175598 112 if (obj->uart == UART_1) {
mbed_official 237:f3da66175598 113 __USART1_CLK_ENABLE();
mbed_official 237:f3da66175598 114 obj->index = 0;
mbed_official 237:f3da66175598 115 }
mbed_official 237:f3da66175598 116 if (obj->uart == UART_2) {
mbed_official 237:f3da66175598 117 __USART2_CLK_ENABLE();
mbed_official 237:f3da66175598 118 obj->index = 1;
mbed_official 237:f3da66175598 119 }
mbed_official 237:f3da66175598 120 if (obj->uart == UART_3) {
mbed_official 237:f3da66175598 121 __USART3_CLK_ENABLE();
mbed_official 237:f3da66175598 122 obj->index = 2;
mbed_official 237:f3da66175598 123 }
mbed_official 237:f3da66175598 124
mbed_official 237:f3da66175598 125 // Configure the UART pins
mbed_official 237:f3da66175598 126 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 237:f3da66175598 127 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 237:f3da66175598 128 pin_mode(tx, PullUp);
mbed_official 237:f3da66175598 129 pin_mode(rx, PullUp);
mbed_official 237:f3da66175598 130
mbed_official 237:f3da66175598 131 // Configure UART
mbed_official 237:f3da66175598 132 obj->baudrate = 9600;
mbed_official 237:f3da66175598 133 obj->databits = UART_WORDLENGTH_8B;
mbed_official 237:f3da66175598 134 obj->stopbits = UART_STOPBITS_1;
mbed_official 237:f3da66175598 135 obj->parity = UART_PARITY_NONE;
mbed_official 237:f3da66175598 136
mbed_official 237:f3da66175598 137 obj->pin_tx = tx;
mbed_official 237:f3da66175598 138 obj->pin_rx = rx;
mbed_official 237:f3da66175598 139
mbed_official 237:f3da66175598 140 init_uart(obj);
mbed_official 237:f3da66175598 141
mbed_official 237:f3da66175598 142 // For stdio management
mbed_official 237:f3da66175598 143 if (obj->uart == STDIO_UART) {
mbed_official 237:f3da66175598 144 stdio_uart_inited = 1;
mbed_official 237:f3da66175598 145 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 237:f3da66175598 146 }
mbed_official 237:f3da66175598 147 }
mbed_official 237:f3da66175598 148
mbed_official 237:f3da66175598 149 void serial_free(serial_t *obj)
mbed_official 237:f3da66175598 150 {
mbed_official 237:f3da66175598 151 // Reset UART and disable clock
mbed_official 237:f3da66175598 152 if (obj->uart == UART_1) {
mbed_official 237:f3da66175598 153 __USART1_FORCE_RESET();
mbed_official 237:f3da66175598 154 __USART1_RELEASE_RESET();
mbed_official 237:f3da66175598 155 __USART1_CLK_DISABLE();
mbed_official 237:f3da66175598 156 }
mbed_official 237:f3da66175598 157 if (obj->uart == UART_2) {
mbed_official 237:f3da66175598 158 __USART2_FORCE_RESET();
mbed_official 237:f3da66175598 159 __USART2_RELEASE_RESET();
mbed_official 237:f3da66175598 160 __USART2_CLK_DISABLE();
mbed_official 237:f3da66175598 161 }
mbed_official 237:f3da66175598 162 if (obj->uart == UART_3) {
mbed_official 237:f3da66175598 163 __USART3_FORCE_RESET();
mbed_official 237:f3da66175598 164 __USART3_RELEASE_RESET();
mbed_official 237:f3da66175598 165 __USART3_CLK_DISABLE();
mbed_official 237:f3da66175598 166 }
mbed_official 237:f3da66175598 167
mbed_official 237:f3da66175598 168 // Configure GPIOs
mbed_official 237:f3da66175598 169 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 237:f3da66175598 170 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 237:f3da66175598 171
mbed_official 237:f3da66175598 172 serial_irq_ids[obj->index] = 0;
mbed_official 237:f3da66175598 173 }
mbed_official 237:f3da66175598 174
mbed_official 237:f3da66175598 175 void serial_baud(serial_t *obj, int baudrate)
mbed_official 237:f3da66175598 176 {
mbed_official 237:f3da66175598 177 obj->baudrate = baudrate;
mbed_official 237:f3da66175598 178 init_uart(obj);
mbed_official 237:f3da66175598 179 }
mbed_official 237:f3da66175598 180
mbed_official 237:f3da66175598 181 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
mbed_official 237:f3da66175598 182 {
mbed_official 237:f3da66175598 183 if (data_bits == 9) {
mbed_official 237:f3da66175598 184 obj->databits = UART_WORDLENGTH_9B;
mbed_official 237:f3da66175598 185 } else {
mbed_official 237:f3da66175598 186 obj->databits = UART_WORDLENGTH_8B;
mbed_official 237:f3da66175598 187 }
mbed_official 237:f3da66175598 188
mbed_official 237:f3da66175598 189 switch (parity) {
mbed_official 237:f3da66175598 190 case ParityOdd:
mbed_official 237:f3da66175598 191 case ParityForced0:
mbed_official 237:f3da66175598 192 obj->parity = UART_PARITY_ODD;
mbed_official 237:f3da66175598 193 break;
mbed_official 237:f3da66175598 194 case ParityEven:
mbed_official 237:f3da66175598 195 case ParityForced1:
mbed_official 237:f3da66175598 196 obj->parity = UART_PARITY_EVEN;
mbed_official 237:f3da66175598 197 break;
mbed_official 237:f3da66175598 198 default: // ParityNone
mbed_official 237:f3da66175598 199 obj->parity = UART_PARITY_NONE;
mbed_official 237:f3da66175598 200 break;
mbed_official 237:f3da66175598 201 }
mbed_official 237:f3da66175598 202
mbed_official 237:f3da66175598 203 if (stop_bits == 2) {
mbed_official 237:f3da66175598 204 obj->stopbits = UART_STOPBITS_2;
mbed_official 237:f3da66175598 205 } else {
mbed_official 237:f3da66175598 206 obj->stopbits = UART_STOPBITS_1;
mbed_official 237:f3da66175598 207 }
mbed_official 237:f3da66175598 208
mbed_official 237:f3da66175598 209 init_uart(obj);
mbed_official 237:f3da66175598 210 }
mbed_official 237:f3da66175598 211
mbed_official 237:f3da66175598 212 /******************************************************************************
mbed_official 237:f3da66175598 213 * INTERRUPTS HANDLING
mbed_official 237:f3da66175598 214 ******************************************************************************/
mbed_official 237:f3da66175598 215
mbed_official 237:f3da66175598 216 static void uart_irq(UARTName name, int id)
mbed_official 237:f3da66175598 217 {
mbed_official 237:f3da66175598 218 UartHandle.Instance = (USART_TypeDef *)name;
mbed_official 237:f3da66175598 219 if (serial_irq_ids[id] != 0) {
mbed_official 237:f3da66175598 220 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
mbed_official 237:f3da66175598 221 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 237:f3da66175598 222 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TC);
mbed_official 237:f3da66175598 223 }
mbed_official 237:f3da66175598 224 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
mbed_official 237:f3da66175598 225 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 293:2a9cf2ed1474 226 volatile uint32_t tmpval = UartHandle.Instance->RDR; // Clear RXNE bit
mbed_official 237:f3da66175598 227 }
mbed_official 237:f3da66175598 228 }
mbed_official 237:f3da66175598 229 }
mbed_official 237:f3da66175598 230
mbed_official 237:f3da66175598 231 static void uart1_irq(void)
mbed_official 237:f3da66175598 232 {
mbed_official 237:f3da66175598 233 uart_irq(UART_1, 0);
mbed_official 237:f3da66175598 234 }
mbed_official 237:f3da66175598 235
mbed_official 237:f3da66175598 236 static void uart2_irq(void)
mbed_official 237:f3da66175598 237 {
mbed_official 237:f3da66175598 238 uart_irq(UART_2, 1);
mbed_official 237:f3da66175598 239 }
mbed_official 237:f3da66175598 240
mbed_official 237:f3da66175598 241 static void uart3_irq(void)
mbed_official 237:f3da66175598 242 {
mbed_official 237:f3da66175598 243 uart_irq(UART_3, 2);
mbed_official 237:f3da66175598 244 }
mbed_official 237:f3da66175598 245
mbed_official 237:f3da66175598 246 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
mbed_official 237:f3da66175598 247 {
mbed_official 237:f3da66175598 248 irq_handler = handler;
mbed_official 237:f3da66175598 249 serial_irq_ids[obj->index] = id;
mbed_official 237:f3da66175598 250 }
mbed_official 237:f3da66175598 251
mbed_official 237:f3da66175598 252 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
mbed_official 237:f3da66175598 253 {
mbed_official 237:f3da66175598 254 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 237:f3da66175598 255 uint32_t vector = 0;
mbed_official 237:f3da66175598 256
mbed_official 237:f3da66175598 257 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 237:f3da66175598 258
mbed_official 237:f3da66175598 259 if (obj->uart == UART_1) {
mbed_official 237:f3da66175598 260 irq_n = USART1_IRQn;
mbed_official 237:f3da66175598 261 vector = (uint32_t)&uart1_irq;
mbed_official 237:f3da66175598 262 }
mbed_official 237:f3da66175598 263
mbed_official 237:f3da66175598 264 if (obj->uart == UART_2) {
mbed_official 237:f3da66175598 265 irq_n = USART2_IRQn;
mbed_official 237:f3da66175598 266 vector = (uint32_t)&uart2_irq;
mbed_official 237:f3da66175598 267 }
mbed_official 237:f3da66175598 268
mbed_official 237:f3da66175598 269 if (obj->uart == UART_3) {
mbed_official 237:f3da66175598 270 irq_n = USART3_IRQn;
mbed_official 237:f3da66175598 271 vector = (uint32_t)&uart3_irq;
mbed_official 237:f3da66175598 272 }
mbed_official 237:f3da66175598 273
mbed_official 237:f3da66175598 274 if (enable) {
mbed_official 237:f3da66175598 275
mbed_official 237:f3da66175598 276 if (irq == RxIrq) {
mbed_official 237:f3da66175598 277 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 237:f3da66175598 278 } else { // TxIrq
mbed_official 237:f3da66175598 279 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 237:f3da66175598 280 }
mbed_official 237:f3da66175598 281
mbed_official 237:f3da66175598 282 NVIC_SetVector(irq_n, vector);
mbed_official 237:f3da66175598 283 NVIC_EnableIRQ(irq_n);
mbed_official 237:f3da66175598 284
mbed_official 237:f3da66175598 285 } else { // disable
mbed_official 237:f3da66175598 286
mbed_official 237:f3da66175598 287 int all_disabled = 0;
mbed_official 237:f3da66175598 288
mbed_official 237:f3da66175598 289 if (irq == RxIrq) {
mbed_official 237:f3da66175598 290 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 237:f3da66175598 291 // Check if TxIrq is disabled too
mbed_official 293:2a9cf2ed1474 292 if ((UartHandle.Instance->CR1 & USART_CR1_TCIE) == 0) all_disabled = 1;
mbed_official 237:f3da66175598 293 } else { // TxIrq
mbed_official 293:2a9cf2ed1474 294 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 237:f3da66175598 295 // Check if RxIrq is disabled too
mbed_official 237:f3da66175598 296 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 237:f3da66175598 297 }
mbed_official 237:f3da66175598 298
mbed_official 237:f3da66175598 299 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 237:f3da66175598 300
mbed_official 237:f3da66175598 301 }
mbed_official 237:f3da66175598 302 }
mbed_official 237:f3da66175598 303
mbed_official 237:f3da66175598 304 /******************************************************************************
mbed_official 237:f3da66175598 305 * READ/WRITE
mbed_official 237:f3da66175598 306 ******************************************************************************/
mbed_official 237:f3da66175598 307
mbed_official 237:f3da66175598 308 int serial_getc(serial_t *obj)
mbed_official 237:f3da66175598 309 {
mbed_official 237:f3da66175598 310 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 237:f3da66175598 311 while (!serial_readable(obj));
mbed_official 237:f3da66175598 312 if (obj->databits == UART_WORDLENGTH_8B) {
mbed_official 237:f3da66175598 313 return (int)(uart->RDR & (uint8_t)0xFF);
mbed_official 237:f3da66175598 314 } else {
mbed_official 237:f3da66175598 315 return (int)(uart->RDR & (uint16_t)0x1FF);
mbed_official 237:f3da66175598 316 }
mbed_official 237:f3da66175598 317 }
mbed_official 237:f3da66175598 318
mbed_official 237:f3da66175598 319 void serial_putc(serial_t *obj, int c)
mbed_official 237:f3da66175598 320 {
mbed_official 237:f3da66175598 321 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 237:f3da66175598 322 while (!serial_writable(obj));
mbed_official 237:f3da66175598 323 if (obj->databits == UART_WORDLENGTH_8B) {
mbed_official 237:f3da66175598 324 uart->TDR = (uint8_t)(c & (uint8_t)0xFF);
mbed_official 237:f3da66175598 325 } else {
mbed_official 237:f3da66175598 326 uart->TDR = (uint16_t)(c & (uint16_t)0x1FF);
mbed_official 237:f3da66175598 327 }
mbed_official 237:f3da66175598 328 }
mbed_official 237:f3da66175598 329
mbed_official 237:f3da66175598 330 int serial_readable(serial_t *obj)
mbed_official 237:f3da66175598 331 {
mbed_official 237:f3da66175598 332 int status;
mbed_official 237:f3da66175598 333 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 237:f3da66175598 334 // Check if data is received
mbed_official 237:f3da66175598 335 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 237:f3da66175598 336 return status;
mbed_official 237:f3da66175598 337 }
mbed_official 237:f3da66175598 338
mbed_official 237:f3da66175598 339 int serial_writable(serial_t *obj)
mbed_official 237:f3da66175598 340 {
mbed_official 237:f3da66175598 341 int status;
mbed_official 237:f3da66175598 342 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 237:f3da66175598 343 // Check if data is transmitted
mbed_official 237:f3da66175598 344 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 237:f3da66175598 345 return status;
mbed_official 237:f3da66175598 346 }
mbed_official 237:f3da66175598 347
mbed_official 237:f3da66175598 348 void serial_clear(serial_t *obj)
mbed_official 237:f3da66175598 349 {
mbed_official 237:f3da66175598 350 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 293:2a9cf2ed1474 351 __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TC);
mbed_official 293:2a9cf2ed1474 352 __HAL_UART_SEND_REQ(&UartHandle, UART_RXDATA_FLUSH_REQUEST);
mbed_official 237:f3da66175598 353 }
mbed_official 237:f3da66175598 354
mbed_official 237:f3da66175598 355 void serial_pinout_tx(PinName tx)
mbed_official 237:f3da66175598 356 {
mbed_official 237:f3da66175598 357 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 237:f3da66175598 358 }
mbed_official 237:f3da66175598 359
mbed_official 237:f3da66175598 360 void serial_break_set(serial_t *obj)
mbed_official 237:f3da66175598 361 {
mbed_official 237:f3da66175598 362 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 237:f3da66175598 363 HAL_LIN_SendBreak(&UartHandle);
mbed_official 237:f3da66175598 364 }
mbed_official 237:f3da66175598 365
mbed_official 237:f3da66175598 366 void serial_break_clear(serial_t *obj)
mbed_official 237:f3da66175598 367 {
mbed_official 237:f3da66175598 368 }
mbed_official 237:f3da66175598 369
mbed_official 237:f3da66175598 370 #endif