gabriel della-monica / mbed-src

mbed library sources

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targets/hal/TARGET_STM/TARGET_NUCLEO_L053R8/serial_api.c@201:fa203361dc70, 2014-05-21 (annotated)

Committer:
mbed_official
Date:
Wed May 21 10:30:07 2014 +0100
Revision:
201:fa203361dc70
Parent:
181:a4cbdfbbd2f4
Child:
227:7bd0639b8911
Synchronized with git revision 29b91e5636c1001db3c38fb7841f278542728631



Full URL: https://github.com/mbedmicro/mbed/commit/29b91e5636c1001db3c38fb7841f278542728631/



[NUCLEO_L053R8] Fix baudrate issue with LPUART1

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 181:a4cbdfbbd2f4 3 * Copyright (c) 2014, 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 181:a4cbdfbbd2f4 30 #include "serial_api.h"
mbed_official 181:a4cbdfbbd2f4 31
mbed_official 181:a4cbdfbbd2f4 32 #if DEVICE_SERIAL
mbed_official 181:a4cbdfbbd2f4 33
mbed_official 181:a4cbdfbbd2f4 34 #include "cmsis.h"
mbed_official 181:a4cbdfbbd2f4 35 #include "pinmap.h"
mbed_official 181:a4cbdfbbd2f4 36 #include "error.h"
mbed_official 181:a4cbdfbbd2f4 37 #include <string.h>
mbed_official 181:a4cbdfbbd2f4 38
mbed_official 181:a4cbdfbbd2f4 39 static const PinMap PinMap_UART_TX[] = {
mbed_official 181:a4cbdfbbd2f4 40 {PA_2, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
mbed_official 181:a4cbdfbbd2f4 41 {PA_9, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART1)},
mbed_official 181:a4cbdfbbd2f4 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 181:a4cbdfbbd2f4 43 {PB_6, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART1)},
mbed_official 181:a4cbdfbbd2f4 44 {PB_10, LPUART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_LPUART1)},
mbed_official 181:a4cbdfbbd2f4 45 {PC_4, LPUART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_LPUART1)},
mbed_official 181:a4cbdfbbd2f4 46 {PC_10, LPUART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_LPUART1)},
mbed_official 181:a4cbdfbbd2f4 47 {NC, NC, 0}
mbed_official 181:a4cbdfbbd2f4 48 };
mbed_official 181:a4cbdfbbd2f4 49
mbed_official 181:a4cbdfbbd2f4 50 static const PinMap PinMap_UART_RX[] = {
mbed_official 181:a4cbdfbbd2f4 51 {PA_3, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
mbed_official 181:a4cbdfbbd2f4 52 {PA_10, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART1)},
mbed_official 181:a4cbdfbbd2f4 53 {PA_15, UART_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_USART2)},
mbed_official 181:a4cbdfbbd2f4 54 {PB_7, UART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_USART1)},
mbed_official 181:a4cbdfbbd2f4 55 {PB_11, LPUART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF4_LPUART1)},
mbed_official 181:a4cbdfbbd2f4 56 {PC_5, LPUART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF2_LPUART1)},
mbed_official 181:a4cbdfbbd2f4 57 {PC_11, LPUART_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF0_LPUART1)},
mbed_official 181:a4cbdfbbd2f4 58 {NC, NC, 0}
mbed_official 181:a4cbdfbbd2f4 59 };
mbed_official 181:a4cbdfbbd2f4 60
mbed_official 181:a4cbdfbbd2f4 61 #define UART_NUM (3)
mbed_official 181:a4cbdfbbd2f4 62
mbed_official 181:a4cbdfbbd2f4 63 static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0};
mbed_official 181:a4cbdfbbd2f4 64
mbed_official 181:a4cbdfbbd2f4 65 static uart_irq_handler irq_handler;
mbed_official 181:a4cbdfbbd2f4 66
mbed_official 181:a4cbdfbbd2f4 67 UART_HandleTypeDef UartHandle;
mbed_official 181:a4cbdfbbd2f4 68
mbed_official 181:a4cbdfbbd2f4 69 int stdio_uart_inited = 0;
mbed_official 181:a4cbdfbbd2f4 70 serial_t stdio_uart;
mbed_official 181:a4cbdfbbd2f4 71
mbed_official 181:a4cbdfbbd2f4 72 static void init_uart(serial_t *obj) {
mbed_official 181:a4cbdfbbd2f4 73 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 74
mbed_official 201:fa203361dc70 75 // [TODO] Workaround to be removed after HAL driver is corrected
mbed_official 201:fa203361dc70 76 if (obj->uart == LPUART_1) {
mbed_official 201:fa203361dc70 77 UartHandle.Init.BaudRate = obj->baudrate >> 1;
mbed_official 201:fa203361dc70 78 } else {
mbed_official 201:fa203361dc70 79 UartHandle.Init.BaudRate = obj->baudrate;
mbed_official 201:fa203361dc70 80 }
mbed_official 181:a4cbdfbbd2f4 81 UartHandle.Init.WordLength = obj->databits;
mbed_official 181:a4cbdfbbd2f4 82 UartHandle.Init.StopBits = obj->stopbits;
mbed_official 181:a4cbdfbbd2f4 83 UartHandle.Init.Parity = obj->parity;
mbed_official 181:a4cbdfbbd2f4 84 UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
mbed_official 201:fa203361dc70 85
mbed_official 201:fa203361dc70 86 if (obj->pin_rx == NC) {
mbed_official 201:fa203361dc70 87 UartHandle.Init.Mode = UART_MODE_TX;
mbed_official 201:fa203361dc70 88 } else if (obj->pin_tx == NC) {
mbed_official 201:fa203361dc70 89 UartHandle.Init.Mode = UART_MODE_RX;
mbed_official 181:a4cbdfbbd2f4 90 } else {
mbed_official 201:fa203361dc70 91 UartHandle.Init.Mode = UART_MODE_TX_RX;
mbed_official 181:a4cbdfbbd2f4 92 }
mbed_official 181:a4cbdfbbd2f4 93
mbed_official 181:a4cbdfbbd2f4 94 HAL_UART_Init(&UartHandle);
mbed_official 181:a4cbdfbbd2f4 95 }
mbed_official 181:a4cbdfbbd2f4 96
mbed_official 181:a4cbdfbbd2f4 97 void serial_init(serial_t *obj, PinName tx, PinName rx) {
mbed_official 181:a4cbdfbbd2f4 98 // Determine the UART to use (UART_1, UART_2, ...)
mbed_official 181:a4cbdfbbd2f4 99 UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
mbed_official 181:a4cbdfbbd2f4 100 UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
mbed_official 181:a4cbdfbbd2f4 101
mbed_official 181:a4cbdfbbd2f4 102 // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
mbed_official 181:a4cbdfbbd2f4 103 obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
mbed_official 181:a4cbdfbbd2f4 104
mbed_official 181:a4cbdfbbd2f4 105 if (obj->uart == (UARTName)NC) {
mbed_official 181:a4cbdfbbd2f4 106 error("Serial error: pinout mapping failed.");
mbed_official 181:a4cbdfbbd2f4 107 }
mbed_official 181:a4cbdfbbd2f4 108
mbed_official 181:a4cbdfbbd2f4 109 // Enable UART clock
mbed_official 181:a4cbdfbbd2f4 110 if (obj->uart == UART_1) {
mbed_official 181:a4cbdfbbd2f4 111 __USART1_CLK_ENABLE();
mbed_official 181:a4cbdfbbd2f4 112 obj->index = 0;
mbed_official 181:a4cbdfbbd2f4 113 }
mbed_official 181:a4cbdfbbd2f4 114
mbed_official 181:a4cbdfbbd2f4 115 if (obj->uart == UART_2) {
mbed_official 181:a4cbdfbbd2f4 116 __USART2_CLK_ENABLE();
mbed_official 181:a4cbdfbbd2f4 117 obj->index = 1;
mbed_official 181:a4cbdfbbd2f4 118 }
mbed_official 181:a4cbdfbbd2f4 119
mbed_official 181:a4cbdfbbd2f4 120 if (obj->uart == LPUART_1) {
mbed_official 181:a4cbdfbbd2f4 121 __LPUART1_CLK_ENABLE();
mbed_official 181:a4cbdfbbd2f4 122 obj->index = 2;
mbed_official 181:a4cbdfbbd2f4 123 }
mbed_official 181:a4cbdfbbd2f4 124
mbed_official 181:a4cbdfbbd2f4 125 // Configure the UART pins
mbed_official 181:a4cbdfbbd2f4 126 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 181:a4cbdfbbd2f4 127 pinmap_pinout(rx, PinMap_UART_RX);
mbed_official 181:a4cbdfbbd2f4 128 pin_mode(tx, PullUp);
mbed_official 181:a4cbdfbbd2f4 129 pin_mode(rx, PullUp);
mbed_official 181:a4cbdfbbd2f4 130
mbed_official 181:a4cbdfbbd2f4 131 // Configure UART
mbed_official 181:a4cbdfbbd2f4 132 obj->baudrate = 9600;
mbed_official 181:a4cbdfbbd2f4 133 obj->databits = UART_WORDLENGTH_8B;
mbed_official 181:a4cbdfbbd2f4 134 obj->stopbits = UART_STOPBITS_1;
mbed_official 181:a4cbdfbbd2f4 135 obj->parity = UART_PARITY_NONE;
mbed_official 201:fa203361dc70 136 obj->pin_tx = tx;
mbed_official 201:fa203361dc70 137 obj->pin_rx = rx;
mbed_official 181:a4cbdfbbd2f4 138
mbed_official 181:a4cbdfbbd2f4 139 init_uart(obj);
mbed_official 181:a4cbdfbbd2f4 140
mbed_official 181:a4cbdfbbd2f4 141 // For stdio management
mbed_official 181:a4cbdfbbd2f4 142 if (obj->uart == STDIO_UART) {
mbed_official 181:a4cbdfbbd2f4 143 stdio_uart_inited = 1;
mbed_official 181:a4cbdfbbd2f4 144 memcpy(&stdio_uart, obj, sizeof(serial_t));
mbed_official 181:a4cbdfbbd2f4 145 }
mbed_official 181:a4cbdfbbd2f4 146 }
mbed_official 181:a4cbdfbbd2f4 147
mbed_official 181:a4cbdfbbd2f4 148 void serial_free(serial_t *obj) {
mbed_official 201:fa203361dc70 149 // Reset UART and disable clock
mbed_official 201:fa203361dc70 150 if (obj->uart == UART_1) {
mbed_official 201:fa203361dc70 151 __USART1_FORCE_RESET();
mbed_official 201:fa203361dc70 152 __USART1_RELEASE_RESET();
mbed_official 201:fa203361dc70 153 __USART1_CLK_DISABLE();
mbed_official 201:fa203361dc70 154 }
mbed_official 201:fa203361dc70 155
mbed_official 201:fa203361dc70 156 if (obj->uart == UART_2) {
mbed_official 201:fa203361dc70 157 __USART2_FORCE_RESET();
mbed_official 201:fa203361dc70 158 __USART2_RELEASE_RESET();
mbed_official 201:fa203361dc70 159 __USART2_CLK_DISABLE();
mbed_official 201:fa203361dc70 160 }
mbed_official 201:fa203361dc70 161
mbed_official 201:fa203361dc70 162 if (obj->uart == LPUART_1) {
mbed_official 201:fa203361dc70 163 __LPUART1_FORCE_RESET();
mbed_official 201:fa203361dc70 164 __LPUART1_RELEASE_RESET();
mbed_official 201:fa203361dc70 165 __LPUART1_CLK_DISABLE();
mbed_official 201:fa203361dc70 166 }
mbed_official 201:fa203361dc70 167
mbed_official 201:fa203361dc70 168 // Configure GPIOs
mbed_official 201:fa203361dc70 169 pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 201:fa203361dc70 170 pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 201:fa203361dc70 171
mbed_official 181:a4cbdfbbd2f4 172 serial_irq_ids[obj->index] = 0;
mbed_official 181:a4cbdfbbd2f4 173 }
mbed_official 181:a4cbdfbbd2f4 174
mbed_official 181:a4cbdfbbd2f4 175 void serial_baud(serial_t *obj, int baudrate) {
mbed_official 181:a4cbdfbbd2f4 176 obj->baudrate = baudrate;
mbed_official 181:a4cbdfbbd2f4 177 init_uart(obj);
mbed_official 181:a4cbdfbbd2f4 178 }
mbed_official 181:a4cbdfbbd2f4 179
mbed_official 181:a4cbdfbbd2f4 180 void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) {
mbed_official 181:a4cbdfbbd2f4 181 if (data_bits == 8) {
mbed_official 181:a4cbdfbbd2f4 182 obj->databits = UART_WORDLENGTH_8B;
mbed_official 181:a4cbdfbbd2f4 183 } else {
mbed_official 181:a4cbdfbbd2f4 184 obj->databits = UART_WORDLENGTH_9B;
mbed_official 181:a4cbdfbbd2f4 185 }
mbed_official 181:a4cbdfbbd2f4 186
mbed_official 181:a4cbdfbbd2f4 187 switch (parity) {
mbed_official 181:a4cbdfbbd2f4 188 case ParityOdd:
mbed_official 181:a4cbdfbbd2f4 189 case ParityForced0:
mbed_official 181:a4cbdfbbd2f4 190 obj->parity = UART_PARITY_ODD;
mbed_official 181:a4cbdfbbd2f4 191 break;
mbed_official 181:a4cbdfbbd2f4 192 case ParityEven:
mbed_official 181:a4cbdfbbd2f4 193 case ParityForced1:
mbed_official 181:a4cbdfbbd2f4 194 obj->parity = UART_PARITY_EVEN;
mbed_official 181:a4cbdfbbd2f4 195 break;
mbed_official 181:a4cbdfbbd2f4 196 default: // ParityNone
mbed_official 181:a4cbdfbbd2f4 197 obj->parity = UART_PARITY_NONE;
mbed_official 181:a4cbdfbbd2f4 198 break;
mbed_official 181:a4cbdfbbd2f4 199 }
mbed_official 181:a4cbdfbbd2f4 200
mbed_official 181:a4cbdfbbd2f4 201 if (stop_bits == 2) {
mbed_official 181:a4cbdfbbd2f4 202 obj->stopbits = UART_STOPBITS_2;
mbed_official 181:a4cbdfbbd2f4 203 } else {
mbed_official 181:a4cbdfbbd2f4 204 obj->stopbits = UART_STOPBITS_1;
mbed_official 181:a4cbdfbbd2f4 205 }
mbed_official 181:a4cbdfbbd2f4 206
mbed_official 181:a4cbdfbbd2f4 207 init_uart(obj);
mbed_official 181:a4cbdfbbd2f4 208 }
mbed_official 181:a4cbdfbbd2f4 209
mbed_official 181:a4cbdfbbd2f4 210 /******************************************************************************
mbed_official 181:a4cbdfbbd2f4 211 * INTERRUPTS HANDLING
mbed_official 181:a4cbdfbbd2f4 212 ******************************************************************************/
mbed_official 181:a4cbdfbbd2f4 213
mbed_official 181:a4cbdfbbd2f4 214 static void uart_irq(UARTName name, int id) {
mbed_official 181:a4cbdfbbd2f4 215 UartHandle.Instance = (USART_TypeDef *)name;
mbed_official 181:a4cbdfbbd2f4 216 if (serial_irq_ids[id] != 0) {
mbed_official 181:a4cbdfbbd2f4 217 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
mbed_official 181:a4cbdfbbd2f4 218 irq_handler(serial_irq_ids[id], TxIrq);
mbed_official 181:a4cbdfbbd2f4 219 __HAL_UART_CLEAR_IT(&UartHandle, UART_CLEAR_TCF);
mbed_official 181:a4cbdfbbd2f4 220 }
mbed_official 181:a4cbdfbbd2f4 221 if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
mbed_official 181:a4cbdfbbd2f4 222 irq_handler(serial_irq_ids[id], RxIrq);
mbed_official 181:a4cbdfbbd2f4 223 __HAL_UART_SEND_REQ(&UartHandle, UART_RXDATA_FLUSH_REQUEST);
mbed_official 181:a4cbdfbbd2f4 224 }
mbed_official 181:a4cbdfbbd2f4 225 }
mbed_official 181:a4cbdfbbd2f4 226 }
mbed_official 181:a4cbdfbbd2f4 227
mbed_official 181:a4cbdfbbd2f4 228 static void uart1_irq(void) {
mbed_official 181:a4cbdfbbd2f4 229 uart_irq(UART_1, 0);
mbed_official 181:a4cbdfbbd2f4 230 }
mbed_official 201:fa203361dc70 231
mbed_official 181:a4cbdfbbd2f4 232 static void uart2_irq(void) {
mbed_official 181:a4cbdfbbd2f4 233 uart_irq(UART_2, 1);
mbed_official 181:a4cbdfbbd2f4 234 }
mbed_official 201:fa203361dc70 235
mbed_official 181:a4cbdfbbd2f4 236 static void lpuart1_irq(void) {
mbed_official 181:a4cbdfbbd2f4 237 uart_irq(LPUART_1, 2);
mbed_official 181:a4cbdfbbd2f4 238 }
mbed_official 181:a4cbdfbbd2f4 239
mbed_official 181:a4cbdfbbd2f4 240 void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) {
mbed_official 181:a4cbdfbbd2f4 241 irq_handler = handler;
mbed_official 181:a4cbdfbbd2f4 242 serial_irq_ids[obj->index] = id;
mbed_official 181:a4cbdfbbd2f4 243 }
mbed_official 181:a4cbdfbbd2f4 244
mbed_official 181:a4cbdfbbd2f4 245 void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) {
mbed_official 181:a4cbdfbbd2f4 246 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 181:a4cbdfbbd2f4 247 uint32_t vector = 0;
mbed_official 181:a4cbdfbbd2f4 248
mbed_official 181:a4cbdfbbd2f4 249 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 250
mbed_official 181:a4cbdfbbd2f4 251 if (obj->uart == UART_1) {
mbed_official 181:a4cbdfbbd2f4 252 irq_n = USART1_IRQn;
mbed_official 181:a4cbdfbbd2f4 253 vector = (uint32_t)&uart1_irq;
mbed_official 181:a4cbdfbbd2f4 254 }
mbed_official 181:a4cbdfbbd2f4 255
mbed_official 181:a4cbdfbbd2f4 256 if (obj->uart == UART_2) {
mbed_official 181:a4cbdfbbd2f4 257 irq_n = USART2_IRQn;
mbed_official 181:a4cbdfbbd2f4 258 vector = (uint32_t)&uart2_irq;
mbed_official 181:a4cbdfbbd2f4 259 }
mbed_official 181:a4cbdfbbd2f4 260
mbed_official 181:a4cbdfbbd2f4 261 if (obj->uart == LPUART_1) {
mbed_official 181:a4cbdfbbd2f4 262 irq_n = RNG_LPUART1_IRQn;
mbed_official 181:a4cbdfbbd2f4 263 vector = (uint32_t)&lpuart1_irq;
mbed_official 181:a4cbdfbbd2f4 264 }
mbed_official 181:a4cbdfbbd2f4 265
mbed_official 181:a4cbdfbbd2f4 266 if (enable) {
mbed_official 181:a4cbdfbbd2f4 267
mbed_official 181:a4cbdfbbd2f4 268 if (irq == RxIrq) {
mbed_official 181:a4cbdfbbd2f4 269 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 181:a4cbdfbbd2f4 270 } else { // TxIrq
mbed_official 181:a4cbdfbbd2f4 271 __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
mbed_official 181:a4cbdfbbd2f4 272 }
mbed_official 181:a4cbdfbbd2f4 273
mbed_official 181:a4cbdfbbd2f4 274 NVIC_SetVector(irq_n, vector);
mbed_official 181:a4cbdfbbd2f4 275 NVIC_EnableIRQ(irq_n);
mbed_official 181:a4cbdfbbd2f4 276
mbed_official 181:a4cbdfbbd2f4 277 } else { // disable
mbed_official 181:a4cbdfbbd2f4 278
mbed_official 181:a4cbdfbbd2f4 279 int all_disabled = 0;
mbed_official 181:a4cbdfbbd2f4 280
mbed_official 181:a4cbdfbbd2f4 281 if (irq == RxIrq) {
mbed_official 181:a4cbdfbbd2f4 282 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
mbed_official 181:a4cbdfbbd2f4 283 // Check if TxIrq is disabled too
mbed_official 181:a4cbdfbbd2f4 284 if ((UartHandle.Instance->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
mbed_official 181:a4cbdfbbd2f4 285 } else { // TxIrq
mbed_official 181:a4cbdfbbd2f4 286 __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TXE);
mbed_official 181:a4cbdfbbd2f4 287 // Check if RxIrq is disabled too
mbed_official 181:a4cbdfbbd2f4 288 if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
mbed_official 181:a4cbdfbbd2f4 289 }
mbed_official 181:a4cbdfbbd2f4 290
mbed_official 181:a4cbdfbbd2f4 291 if (all_disabled) NVIC_DisableIRQ(irq_n);
mbed_official 181:a4cbdfbbd2f4 292
mbed_official 181:a4cbdfbbd2f4 293 }
mbed_official 181:a4cbdfbbd2f4 294 }
mbed_official 181:a4cbdfbbd2f4 295
mbed_official 181:a4cbdfbbd2f4 296 /******************************************************************************
mbed_official 181:a4cbdfbbd2f4 297 * READ/WRITE
mbed_official 181:a4cbdfbbd2f4 298 ******************************************************************************/
mbed_official 181:a4cbdfbbd2f4 299
mbed_official 181:a4cbdfbbd2f4 300 int serial_getc(serial_t *obj) {
mbed_official 181:a4cbdfbbd2f4 301 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 302 while (!serial_readable(obj));
mbed_official 181:a4cbdfbbd2f4 303 return (int)(uart->RDR & 0xFF);
mbed_official 181:a4cbdfbbd2f4 304 }
mbed_official 181:a4cbdfbbd2f4 305
mbed_official 181:a4cbdfbbd2f4 306 void serial_putc(serial_t *obj, int c) {
mbed_official 181:a4cbdfbbd2f4 307 USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 308 while (!serial_writable(obj));
mbed_official 181:a4cbdfbbd2f4 309 uart->TDR = (uint32_t)(c & 0xFF);
mbed_official 181:a4cbdfbbd2f4 310 }
mbed_official 181:a4cbdfbbd2f4 311
mbed_official 181:a4cbdfbbd2f4 312 int serial_readable(serial_t *obj) {
mbed_official 181:a4cbdfbbd2f4 313 int status;
mbed_official 181:a4cbdfbbd2f4 314 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 315 // Check if data is received
mbed_official 181:a4cbdfbbd2f4 316 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
mbed_official 181:a4cbdfbbd2f4 317 return status;
mbed_official 181:a4cbdfbbd2f4 318 }
mbed_official 181:a4cbdfbbd2f4 319
mbed_official 181:a4cbdfbbd2f4 320 int serial_writable(serial_t *obj) {
mbed_official 181:a4cbdfbbd2f4 321 int status;
mbed_official 181:a4cbdfbbd2f4 322 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 323 // Check if data is transmitted
mbed_official 181:a4cbdfbbd2f4 324 status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
mbed_official 181:a4cbdfbbd2f4 325 return status;
mbed_official 181:a4cbdfbbd2f4 326 }
mbed_official 181:a4cbdfbbd2f4 327
mbed_official 181:a4cbdfbbd2f4 328 void serial_clear(serial_t *obj) {
mbed_official 181:a4cbdfbbd2f4 329 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 330 __HAL_UART_CLEAR_IT(&UartHandle, UART_CLEAR_TCF);
mbed_official 181:a4cbdfbbd2f4 331 __HAL_UART_SEND_REQ(&UartHandle, UART_RXDATA_FLUSH_REQUEST);
mbed_official 181:a4cbdfbbd2f4 332 }
mbed_official 181:a4cbdfbbd2f4 333
mbed_official 181:a4cbdfbbd2f4 334 void serial_pinout_tx(PinName tx) {
mbed_official 181:a4cbdfbbd2f4 335 pinmap_pinout(tx, PinMap_UART_TX);
mbed_official 181:a4cbdfbbd2f4 336 }
mbed_official 181:a4cbdfbbd2f4 337
mbed_official 181:a4cbdfbbd2f4 338 void serial_break_set(serial_t *obj) {
mbed_official 181:a4cbdfbbd2f4 339 UartHandle.Instance = (USART_TypeDef *)(obj->uart);
mbed_official 181:a4cbdfbbd2f4 340 __HAL_UART_SEND_REQ(&UartHandle, UART_SENDBREAK_REQUEST);
mbed_official 181:a4cbdfbbd2f4 341 }
mbed_official 181:a4cbdfbbd2f4 342
mbed_official 181:a4cbdfbbd2f4 343 void serial_break_clear(serial_t *obj) {
mbed_official 181:a4cbdfbbd2f4 344 }
mbed_official 181:a4cbdfbbd2f4 345
mbed_official 181:a4cbdfbbd2f4 346 #endif