gabriel della-monica / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_DISCO_L053C8/serial_api.c@376:cb4d9db17537, 2014-10-31 (annotated)

Committer:
mbed_official
Date:
Fri Oct 31 11:00:10 2014 +0000
Revision:
376:cb4d9db17537
Child:
439:c4382fcbbaed
Synchronized with git revision 07b49da75eac883fc8916d3d6b6962664b8db29e



Full URL: https://github.com/mbedmicro/mbed/commit/07b49da75eac883fc8916d3d6b6962664b8db29e/



Targets: DISCO_L053C8 - new platform - STM32L0 Discovery board

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 376:cb4d9db17537 1 /* mbed Microcontroller Library
mbed_official 376:cb4d9db17537 2 *******************************************************************************
mbed_official 376:cb4d9db17537 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 376:cb4d9db17537 4 * All rights reserved.
mbed_official 376:cb4d9db17537 5 *
mbed_official 376:cb4d9db17537 6 * Redistribution and use in source and binary forms, with or without
mbed_official 376:cb4d9db17537 7 * modification, are permitted provided that the following conditions are met:
mbed_official 376:cb4d9db17537 8 *
mbed_official 376:cb4d9db17537 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 376:cb4d9db17537 10 * this list of conditions and the following disclaimer.
mbed_official 376:cb4d9db17537 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 376:cb4d9db17537 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 376:cb4d9db17537 13 * and/or other materials provided with the distribution.
mbed_official 376:cb4d9db17537 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 376:cb4d9db17537 15 * may be used to endorse or promote products derived from this software
mbed_official 376:cb4d9db17537 16 * without specific prior written permission.
mbed_official 376:cb4d9db17537 17 *
mbed_official 376:cb4d9db17537 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 376:cb4d9db17537 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 376:cb4d9db17537 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 376:cb4d9db17537 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 376:cb4d9db17537 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 376:cb4d9db17537 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 376:cb4d9db17537 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 376:cb4d9db17537 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 376:cb4d9db17537 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 376:cb4d9db17537 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 376:cb4d9db17537 28 *******************************************************************************
mbed_official 376:cb4d9db17537 29 */
mbed_official 376:cb4d9db17537 30 #include "mbed_assert.h"
mbed_official 376:cb4d9db17537 31 #include "serial_api.h"
mbed_official 376:cb4d9db17537 32
mbed_official 376:cb4d9db17537 33 #if DEVICE_SERIAL
mbed_official 376:cb4d9db17537 34
mbed_official 376:cb4d9db17537 35 #include "cmsis.h"
mbed_official 376:cb4d9db17537 36 #include "pinmap.h"
mbed_official 376:cb4d9db17537 37 #include <string.h>
mbed_official 376:cb4d9db17537 38
mbed_official 376:cb4d9db17537 39 static const PinMap PinMap_UART_TX[] = {
mbed_official 376:cb4d9db17537 40 {PA_2, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
mbed_official 376:cb4d9db17537 41 {PA_9, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART1)},
mbed_official 376:cb4d9db17537 42 {PA_14, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)}, // Warning: this pin is used by SWCLK
mbed_official 376:cb4d9db17537 43 {PB_6, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART1)},
mbed_official 376:cb4d9db17537 44 {PB_10, LPUART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_LPUART1)},
mbed_official 376:cb4d9db17537 45 {PC_4, LPUART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_LPUART1)},
mbed_official 376:cb4d9db17537 46 {PC_10, LPUART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_LPUART1)},
mbed_official 376:cb4d9db17537 47 {NC, NC, 0}
mbed_official 376:cb4d9db17537 48 };
mbed_official 376:cb4d9db17537 49
mbed_official 376:cb4d9db17537 50 static const PinMap PinMap_UART_RX[] = {
mbed_official 376:cb4d9db17537 51 {PA_3, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
mbed_official 376:cb4d9db17537 52 {PA_10, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART1)},
mbed_official 376:cb4d9db17537 53 {PA_15, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
mbed_official 376:cb4d9db17537 54 {PB_7, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART1)},
mbed_official 376:cb4d9db17537 55 {PB_11, LPUART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_LPUART1)},
mbed_official 376:cb4d9db17537 56 {PC_5, LPUART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_LPUART1)},
mbed_official 376:cb4d9db17537 57 {PC_11, LPUART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_LPUART1)},
mbed_official 376:cb4d9db17537 58 {NC, NC, 0}
mbed_official 376:cb4d9db17537 59 };
mbed_official 376:cb4d9db17537 60
mbed_official 376:cb4d9db17537 61 #define UART_NUM (3)
mbed_official 376:cb4d9db17537 62
mbed_official 376:cb4d9db17537 63 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0};
mbed_official 376:cb4d9db17537 64
mbed_official 376:cb4d9db17537 65 static uart_irq_handler irq_handler;
mbed_official 376:cb4d9db17537 66
mbed_official 376:cb4d9db17537 67 UART_HandleTypeDef UartHandle;
mbed_official 376:cb4d9db17537 68
mbed_official 376:cb4d9db17537 69 int stdio_uart_inited = 0;
mbed_official 376:cb4d9db17537 70 serial_t stdio_uart;
mbed_official 376:cb4d9db17537 71
mbed_official 376:cb4d9db17537 72 static void init_uart(serial_t *obj) {
mbed_official 376:cb4d9db17537 73 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 376:cb4d9db17537 74
mbed_official 376:cb4d9db17537 75 // [TODO] Workaround to be removed after HAL driver is corrected
mbed_official 376:cb4d9db17537 76 if (obj->uart == LPUART_1) {
mbed_official 376:cb4d9db17537 77 UartHandle.Init.BaudRate = obj->baudrate >> 1;
mbed_official 376:cb4d9db17537 78 } else {
mbed_official 376:cb4d9db17537 79 UartHandle.Init.BaudRate = obj->baudrate;
mbed_official 376:cb4d9db17537 80 }
mbed_official 376:cb4d9db17537 81 UartHandle.Init.WordLength = obj->databits;
mbed_official 376:cb4d9db17537 82 UartHandle.Init.StopBits = obj->stopbits;
mbed_official 376:cb4d9db17537 83 UartHandle.Init.Parity = obj->parity;
mbed_official 376:cb4d9db17537 84 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
mbed_official 376:cb4d9db17537 85
mbed_official 376:cb4d9db17537 86 if (obj->pin_rx == NC) {
mbed_official 376:cb4d9db17537 87 UartHandle.Init.Mode = UART_MODE_TX;
mbed_official 376:cb4d9db17537 88 } else if (obj->pin_tx == NC) {
mbed_official 376:cb4d9db17537 89 UartHandle.Init.Mode = UART_MODE_RX;
mbed_official 376:cb4d9db17537 90 } else {
mbed_official 376:cb4d9db17537 91 UartHandle.Init.Mode = UART_MODE_TX_RX;
mbed_official 376:cb4d9db17537 92 }
mbed_official 376:cb4d9db17537 93
mbed_official 376:cb4d9db17537 94 // Disable the reception overrun detection
mbed_official 376:cb4d9db17537 95 UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_RXOVERRUNDISABLE_INIT;
mbed_official 376:cb4d9db17537 96 UartHandle.AdvancedInit.OverrunDisable = UART_ADVFEATURE_OVERRUN_DISABLE;
mbed_official 376:cb4d9db17537 97
mbed_official 376:cb4d9db17537 98 HAL_UART_Init(&UartHandle);
mbed_official 376:cb4d9db17537 99 }
mbed_official 376:cb4d9db17537 100
mbed_official 376:cb4d9db17537 101 void serial_init(serial_t *obj, PinName tx, PinName rx) {
mbed_official 376:cb4d9db17537 102 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 376:cb4d9db17537 103 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 376:cb4d9db17537 104 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 376:cb4d9db17537 105
mbed_official 376:cb4d9db17537 106 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 376:cb4d9db17537 107 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 376:cb4d9db17537 108 MBED_ASSERT(obj->uart != (UARTName)NC);
mbed_official 376:cb4d9db17537 109
mbed_official 376:cb4d9db17537 110 // Enable UART clock
mbed_official 376:cb4d9db17537 111 if (obj->uart == UART_1) {
mbed_official 376:cb4d9db17537 112 __USART1_CLK_ENABLE();
mbed_official 376:cb4d9db17537 113 obj->index = 0;
mbed_official 376:cb4d9db17537 114 }
mbed_official 376:cb4d9db17537 115
mbed_official 376:cb4d9db17537 116 if (obj->uart == UART_2) {
mbed_official 376:cb4d9db17537 117 __USART2_CLK_ENABLE();
mbed_official 376:cb4d9db17537 118 obj->index = 1;
mbed_official 376:cb4d9db17537 119 }
mbed_official 376:cb4d9db17537 120
mbed_official 376:cb4d9db17537 121 if (obj->uart == LPUART_1) {
mbed_official 376:cb4d9db17537 122 __LPUART1_CLK_ENABLE();
mbed_official 376:cb4d9db17537 123 obj->index = 2;
mbed_official 376:cb4d9db17537 124 }
mbed_official 376:cb4d9db17537 125
mbed_official 376:cb4d9db17537 126 // Configure the UART pins
mbed_official 376:cb4d9db17537 127 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 376:cb4d9db17537 128 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 376:cb4d9db17537 129 if (tx != NC) {
mbed_official 376:cb4d9db17537 130 pin_mode(tx, PullUp);
mbed_official 376:cb4d9db17537 131 }
mbed_official 376:cb4d9db17537 132 if (rx != NC) {
mbed_official 376:cb4d9db17537 133 pin_mode(rx, PullUp);
mbed_official 376:cb4d9db17537 134 }
mbed_official 376:cb4d9db17537 135
mbed_official 376:cb4d9db17537 136 // Configure UART
mbed_official 376:cb4d9db17537 137 obj->baudrate = 9600;
mbed_official 376:cb4d9db17537 138 obj->databits = UART_WORDLENGTH_8B;
mbed_official 376:cb4d9db17537 139 obj->stopbits = UART_STOPBITS_1;
mbed_official 376:cb4d9db17537 140 obj->parity = UART_PARITY_NONE;
mbed_official 376:cb4d9db17537 141 obj->pin_tx = tx;
mbed_official 376:cb4d9db17537 142 obj->pin_rx = rx;
mbed_official 376:cb4d9db17537 143
mbed_official 376:cb4d9db17537 144 init_uart(obj);
mbed_official 376:cb4d9db17537 145
mbed_official 376:cb4d9db17537 146 // For stdio management
mbed_official 376:cb4d9db17537 147 if (obj->uart == STDIO_UART) {
mbed_official 376:cb4d9db17537 148 stdio_uart_inited = 1;
mbed_official 376:cb4d9db17537 149 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 376:cb4d9db17537 150 }
mbed_official 376:cb4d9db17537 151 }
mbed_official 376:cb4d9db17537 152
mbed_official 376:cb4d9db17537 153 void serial_free(serial_t *obj) {
mbed_official 376:cb4d9db17537 154 // Reset UART and disable clock
mbed_official 376:cb4d9db17537 155 if (obj->uart == UART_1) {
mbed_official 376:cb4d9db17537 156 __USART1_FORCE_RESET();
mbed_official 376:cb4d9db17537 157 __USART1_RELEASE_RESET();
mbed_official 376:cb4d9db17537 158 __USART1_CLK_DISABLE();
mbed_official 376:cb4d9db17537 159 }
mbed_official 376:cb4d9db17537 160
mbed_official 376:cb4d9db17537 161 if (obj->uart == UART_2) {
mbed_official 376:cb4d9db17537 162 __USART2_FORCE_RESET();
mbed_official 376:cb4d9db17537 163 __USART2_RELEASE_RESET();
mbed_official 376:cb4d9db17537 164 __USART2_CLK_DISABLE();
mbed_official 376:cb4d9db17537 165 }
mbed_official 376:cb4d9db17537 166
mbed_official 376:cb4d9db17537 167 if (obj->uart == LPUART_1) {
mbed_official 376:cb4d9db17537 168 __LPUART1_FORCE_RESET();
mbed_official 376:cb4d9db17537 169 __LPUART1_RELEASE_RESET();
mbed_official 376:cb4d9db17537 170 __LPUART1_CLK_DISABLE();
mbed_official 376:cb4d9db17537 171 }
mbed_official 376:cb4d9db17537 172
mbed_official 376:cb4d9db17537 173 // Configure GPIOs
mbed_official 376:cb4d9db17537 174 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 376:cb4d9db17537 175 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 376:cb4d9db17537 176
mbed_official 376:cb4d9db17537 177 serial_irq_ids[obj->index] = 0;
mbed_official 376:cb4d9db17537 178 }
mbed_official 376:cb4d9db17537 179
mbed_official 376:cb4d9db17537 180 void serial_baud(serial_t *obj, int baudrate) {
mbed_official 376:cb4d9db17537 181 obj->baudrate = baudrate;
mbed_official 376:cb4d9db17537 182 init_uart(obj);
mbed_official 376:cb4d9db17537 183 }
mbed_official 376:cb4d9db17537 184
mbed_official 376:cb4d9db17537 185 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
mbed_official 376:cb4d9db17537 186 if (data_bits == 9) {
mbed_official 376:cb4d9db17537 187 obj->databits = UART_WORDLENGTH_9B;
mbed_official 376:cb4d9db17537 188 } else {
mbed_official 376:cb4d9db17537 189 obj->databits = UART_WORDLENGTH_8B;
mbed_official 376:cb4d9db17537 190 }
mbed_official 376:cb4d9db17537 191
mbed_official 376:cb4d9db17537 192 switch (parity) {
mbed_official 376:cb4d9db17537 193 case ParityOdd:
mbed_official 376:cb4d9db17537 194 case ParityForced0:
mbed_official 376:cb4d9db17537 195 obj->parity = UART_PARITY_ODD;
mbed_official 376:cb4d9db17537 196 break;
mbed_official 376:cb4d9db17537 197 case ParityEven:
mbed_official 376:cb4d9db17537 198 case ParityForced1:
mbed_official 376:cb4d9db17537 199 obj->parity = UART_PARITY_EVEN;
mbed_official 376:cb4d9db17537 200 break;
mbed_official 376:cb4d9db17537 201 default: // ParityNone
mbed_official 376:cb4d9db17537 202 obj->parity = UART_PARITY_NONE;
mbed_official 376:cb4d9db17537 203 break;
mbed_official 376:cb4d9db17537 204 }
mbed_official 376:cb4d9db17537 205
mbed_official 376:cb4d9db17537 206 if (stop_bits == 2) {
mbed_official 376:cb4d9db17537 207 obj->stopbits = UART_STOPBITS_2;
mbed_official 376:cb4d9db17537 208 } else {
mbed_official 376:cb4d9db17537 209 obj->stopbits = UART_STOPBITS_1;
mbed_official 376:cb4d9db17537 210 }
mbed_official 376:cb4d9db17537 211
mbed_official 376:cb4d9db17537 212 init_uart(obj);
mbed_official 376:cb4d9db17537 213 }
mbed_official 376:cb4d9db17537 214
mbed_official 376:cb4d9db17537 215 /******************************************************************************
mbed_official 376:cb4d9db17537 216 * INTERRUPTS HANDLING
mbed_official 376:cb4d9db17537 217 ******************************************************************************/
mbed_official 376:cb4d9db17537 218
mbed_official 376:cb4d9db17537 219 static void uart_irq(UARTName name, int id) {
mbed_official 376:cb4d9db17537 220 UartHandle.Instance = (USART_TypeDef *)name;
mbed_official 376:cb4d9db17537 221 if (serial_irq_ids[id] != 0) {
mbed_official 376:cb4d9db17537 222 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
mbed_official 376:cb4d9db17537 223 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 376:cb4d9db17537 224 __HAL_UART_CLEAR_IT(&UartHandle, UART_CLEAR_TCF);
mbed_official 376:cb4d9db17537 225 }
mbed_official 376:cb4d9db17537 226 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
mbed_official 376:cb4d9db17537 227 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 376:cb4d9db17537 228 volatile uint32_t tmpval = UartHandle.Instance->RDR; // Clear RXNE bit
mbed_official 376:cb4d9db17537 229 }
mbed_official 376:cb4d9db17537 230 }
mbed_official 376:cb4d9db17537 231 }
mbed_official 376:cb4d9db17537 232
mbed_official 376:cb4d9db17537 233 static void uart1_irq(void) {
mbed_official 376:cb4d9db17537 234 uart_irq(UART_1, 0);
mbed_official 376:cb4d9db17537 235 }
mbed_official 376:cb4d9db17537 236
mbed_official 376:cb4d9db17537 237 static void uart2_irq(void) {
mbed_official 376:cb4d9db17537 238 uart_irq(UART_2, 1);
mbed_official 376:cb4d9db17537 239 }
mbed_official 376:cb4d9db17537 240
mbed_official 376:cb4d9db17537 241 static void lpuart1_irq(void) {
mbed_official 376:cb4d9db17537 242 uart_irq(LPUART_1, 2);
mbed_official 376:cb4d9db17537 243 }
mbed_official 376:cb4d9db17537 244
mbed_official 376:cb4d9db17537 245 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
mbed_official 376:cb4d9db17537 246 irq_handler = handler;
mbed_official 376:cb4d9db17537 247 serial_irq_ids[obj->index] = id;
mbed_official 376:cb4d9db17537 248 }
mbed_official 376:cb4d9db17537 249
mbed_official 376:cb4d9db17537 250 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
mbed_official 376:cb4d9db17537 251 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 376:cb4d9db17537 252 uint32_t vector = 0;
mbed_official 376:cb4d9db17537 253
mbed_official 376:cb4d9db17537 254 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 376:cb4d9db17537 255
mbed_official 376:cb4d9db17537 256 if (obj->uart == UART_1) {
mbed_official 376:cb4d9db17537 257 irq_n = USART1_IRQn;
mbed_official 376:cb4d9db17537 258 vector = (uint32_t)&uart1_irq;
mbed_official 376:cb4d9db17537 259 }
mbed_official 376:cb4d9db17537 260
mbed_official 376:cb4d9db17537 261 if (obj->uart == UART_2) {
mbed_official 376:cb4d9db17537 262 irq_n = USART2_IRQn;
mbed_official 376:cb4d9db17537 263 vector = (uint32_t)&uart2_irq;
mbed_official 376:cb4d9db17537 264 }
mbed_official 376:cb4d9db17537 265
mbed_official 376:cb4d9db17537 266 if (obj->uart == LPUART_1) {
mbed_official 376:cb4d9db17537 267 irq_n = RNG_LPUART1_IRQn;
mbed_official 376:cb4d9db17537 268 vector = (uint32_t)&lpuart1_irq;
mbed_official 376:cb4d9db17537 269 }
mbed_official 376:cb4d9db17537 270
mbed_official 376:cb4d9db17537 271 if (enable) {
mbed_official 376:cb4d9db17537 272
mbed_official 376:cb4d9db17537 273 if (irq == RxIrq) {
mbed_official 376:cb4d9db17537 274 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 376:cb4d9db17537 275 } else { // TxIrq
mbed_official 376:cb4d9db17537 276 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 376:cb4d9db17537 277 }
mbed_official 376:cb4d9db17537 278
mbed_official 376:cb4d9db17537 279 NVIC_SetVector(irq_n, vector);
mbed_official 376:cb4d9db17537 280 NVIC_EnableIRQ(irq_n);
mbed_official 376:cb4d9db17537 281
mbed_official 376:cb4d9db17537 282 } else { // disable
mbed_official 376:cb4d9db17537 283
mbed_official 376:cb4d9db17537 284 int all_disabled = 0;
mbed_official 376:cb4d9db17537 285
mbed_official 376:cb4d9db17537 286 if (irq == RxIrq) {
mbed_official 376:cb4d9db17537 287 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 376:cb4d9db17537 288 // Check if TxIrq is disabled too
mbed_official 376:cb4d9db17537 289 if ((UartHandle.Instance->CR1 & USART_CR1_TCIE) == 0) all_disabled = 1;
mbed_official 376:cb4d9db17537 290 } else { // TxIrq
mbed_official 376:cb4d9db17537 291 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 376:cb4d9db17537 292 // Check if RxIrq is disabled too
mbed_official 376:cb4d9db17537 293 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 376:cb4d9db17537 294 }
mbed_official 376:cb4d9db17537 295
mbed_official 376:cb4d9db17537 296 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 376:cb4d9db17537 297
mbed_official 376:cb4d9db17537 298 }
mbed_official 376:cb4d9db17537 299 }
mbed_official 376:cb4d9db17537 300
mbed_official 376:cb4d9db17537 301 /******************************************************************************
mbed_official 376:cb4d9db17537 302 * READ/WRITE
mbed_official 376:cb4d9db17537 303 ******************************************************************************/
mbed_official 376:cb4d9db17537 304
mbed_official 376:cb4d9db17537 305 int serial_getc(serial_t *obj) {
mbed_official 376:cb4d9db17537 306 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 376:cb4d9db17537 307 while (!serial_readable(obj));
mbed_official 376:cb4d9db17537 308 return (int)(uart->RDR & (uint32_t)0xFF);
mbed_official 376:cb4d9db17537 309 }
mbed_official 376:cb4d9db17537 310
mbed_official 376:cb4d9db17537 311 void serial_putc(serial_t *obj, int c) {
mbed_official 376:cb4d9db17537 312 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 376:cb4d9db17537 313 while (!serial_writable(obj));
mbed_official 376:cb4d9db17537 314 uart->TDR = (uint32_t)(c & (uint32_t)0xFF);
mbed_official 376:cb4d9db17537 315 }
mbed_official 376:cb4d9db17537 316
mbed_official 376:cb4d9db17537 317 int serial_readable(serial_t *obj) {
mbed_official 376:cb4d9db17537 318 int status;
mbed_official 376:cb4d9db17537 319 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 376:cb4d9db17537 320 // Check if data is received
mbed_official 376:cb4d9db17537 321 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 376:cb4d9db17537 322 return status;
mbed_official 376:cb4d9db17537 323 }
mbed_official 376:cb4d9db17537 324
mbed_official 376:cb4d9db17537 325 int serial_writable(serial_t *obj) {
mbed_official 376:cb4d9db17537 326 int status;
mbed_official 376:cb4d9db17537 327 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 376:cb4d9db17537 328 // Check if data is transmitted
mbed_official 376:cb4d9db17537 329 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 376:cb4d9db17537 330 return status;
mbed_official 376:cb4d9db17537 331 }
mbed_official 376:cb4d9db17537 332
mbed_official 376:cb4d9db17537 333 void serial_clear(serial_t *obj) {
mbed_official 376:cb4d9db17537 334 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 376:cb4d9db17537 335 __HAL_UART_CLEAR_IT(&UartHandle, UART_CLEAR_TCF);
mbed_official 376:cb4d9db17537 336 __HAL_UART_SEND_REQ(&UartHandle, UART_RXDATA_FLUSH_REQUEST);
mbed_official 376:cb4d9db17537 337 }
mbed_official 376:cb4d9db17537 338
mbed_official 376:cb4d9db17537 339 void serial_pinout_tx(PinName tx) {
mbed_official 376:cb4d9db17537 340 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 376:cb4d9db17537 341 }
mbed_official 376:cb4d9db17537 342
mbed_official 376:cb4d9db17537 343 void serial_break_set(serial_t *obj) {
mbed_official 376:cb4d9db17537 344 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 376:cb4d9db17537 345 __HAL_UART_SEND_REQ(&UartHandle, UART_SENDBREAK_REQUEST);
mbed_official 376:cb4d9db17537 346 }
mbed_official 376:cb4d9db17537 347
mbed_official 376:cb4d9db17537 348 void serial_break_clear(serial_t *obj) {
mbed_official 376:cb4d9db17537 349 }
mbed_official 376:cb4d9db17537 350
mbed_official 376:cb4d9db17537 351 #endif