mbed library sources
Dependents: Freedman_v2 Nucleo_i2c_OLED_BME280_copy
Fork of mbed-src by
targets/hal/TARGET_WIZNET/TARGET_W7500x/serial_api.c
- Committer:
- mbed_official
- Date:
- 2015-06-03
- Revision:
- 558:0880f51c4036
- Child:
- 614:d1b257119699
File content as of revision 558:0880f51c4036:
/* mbed Microcontroller Library ******************************************************************************* * Copyright (c) 2015 WIZnet Co.,Ltd. All rights reserved. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of ARM Limited nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ******************************************************************************* */ #include "mbed_assert.h" #include "serial_api.h" #if DEVICE_SERIAL #include "cmsis.h" #include "pinmap.h" #include <string.h> #include "PeripheralPins.h" #define UART_NUM (2) static uint32_t serial_irq_ids[UART_NUM] = {0, 0}; static uart_irq_handler irq_handler; static UART_TypeDef *UART; UART_InitTypeDef UART_InitStructure; int stdio_uart_inited = 0; serial_t stdio_uart; static void init_uart(serial_t *obj) { UART = (UART_TypeDef *)(obj->uart); UART_InitStructure.UART_BaudRate = obj->baudrate; UART_InitStructure.UART_WordLength = obj->databits; UART_InitStructure.UART_StopBits = obj->stopbits; UART_InitStructure.UART_Parity = obj->parity; UART_InitStructure.UART_HardwareFlowControl = UART_HardwareFlowControl_None; if (obj->pin_rx == NC) { UART_InitStructure.UART_Mode = UART_Mode_Tx; } else if (obj->pin_tx == NC) { UART_InitStructure.UART_Mode = UART_Mode_Rx; } else { UART_InitStructure.UART_Mode = (UART_Mode_Rx | UART_Mode_Tx); } UART_Init(UART,&UART_InitStructure); } void serial_init(serial_t *obj, PinName tx, PinName rx) { // Determine the UART to use (UART_1, UART_2, ...) UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX); UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX); // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx); MBED_ASSERT(obj->uart != (UARTName)NC); // Enable USART clock if (obj->uart == UART_0) { obj->index = 0; } if (obj->uart == UART_1) { obj->index = 1; } // Configure the UART pins pinmap_pinout(tx, PinMap_UART_TX); pinmap_pinout(rx, PinMap_UART_RX); if (tx != NC) { pin_mode(tx, PullUp); } if (rx != NC) { pin_mode(rx, PullUp); } // Configure UART obj->baudrate = 9600; obj->databits = UART_WordLength_8b; obj->stopbits = UART_StopBits_1; obj->parity = UART_Parity_No; obj->pin_tx = tx; obj->pin_rx = rx; init_uart(obj); // For stdio management if (obj->uart == STDIO_UART) { stdio_uart_inited = 1; memcpy(&stdio_uart, obj, sizeof(serial_t)); } } void serial_free(serial_t *obj) { // Reset UART and disable clock if (obj->uart == UART_0) { } if (obj->uart == UART_1) { } // Configure GPIOs // pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); // pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); serial_irq_ids[obj->index] = 0; } void serial_baud(serial_t *obj, int baudrate) { obj->baudrate = baudrate; init_uart(obj); } void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits) { if (data_bits == 7) { obj->databits = UART_WordLength_7b; } else { obj->databits = UART_WordLength_8b; } switch (parity) { case ParityOdd: case ParityForced0: obj->parity = UART_Parity_Odd; break; case ParityEven: case ParityForced1: obj->parity = UART_Parity_Even; break; default: // ParityNone obj->parity = UART_Parity_No; break; } if (stop_bits == 2) { obj->stopbits = UART_StopBits_2; } else { obj->stopbits = UART_StopBits_1; } init_uart(obj); } /****************************************************************************** * INTERRUPTS HANDLING ******************************************************************************/ static void uart_irq(UARTName name, int id) { UART = (UART_TypeDef *)name; if (serial_irq_ids[id] != 0) { if( UART_GetITStatus(UART,UART_IT_FLAG_TXI) != RESET ){ irq_handler(serial_irq_ids[id], TxIrq); UART_ClearITPendingBit(UART,UART_IT_FLAG_TXI); } if( UART_GetITStatus(UART,UART_IT_FLAG_RXI) != RESET ){ irq_handler(serial_irq_ids[id], RxIrq); } } } #ifdef __cplusplus extern "C"{ #endif void UART0_Handler() { uart_irq(UART_0, 0); } void UART1_Handler() { uart_irq(UART_1, 1); } #ifdef __cplusplus } #endif void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id) { irq_handler = handler; serial_irq_ids[obj->index] = id; } void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable) { IRQn_Type irq_n = (IRQn_Type)0; UART = (UART_TypeDef *)(obj->uart); if (obj->uart == UART_0) { irq_n = UART0_IRQn; } if (obj->uart == UART_1) { irq_n = UART1_IRQn; } if (enable) { if (irq == RxIrq) { UART_ITConfig(UART,UART_IT_FLAG_RXI,ENABLE); } else { // TxIrq UART_ITConfig(UART,UART_IT_FLAG_TXI,ENABLE); } NVIC_ClearPendingIRQ(irq_n); NVIC_EnableIRQ(irq_n); } else { // disable UART_ITConfig(UART,(UART_IT_FLAG_RXI|UART_IT_FLAG_TXI),DISABLE); NVIC_DisableIRQ(irq_n); } } /****************************************************************************** * READ/WRITE ******************************************************************************/ int serial_getc(serial_t *obj) { UART_TypeDef *uart = (UART_TypeDef *)(obj->uart); // while(!serial_readable(obj)); while(uart->FR & UART_FR_RXFE); return (uart->DR & 0xFF); } void serial_putc(serial_t *obj, int c) { UART_TypeDef *uart = (UART_TypeDef *)(obj->uart); uart->DR = (uint32_t)(c & (uint16_t)0xFF); while(uart->FR & UART_FR_BUSY); } int serial_readable(serial_t *obj) { int status; UART_TypeDef *uart = (UART_TypeDef *)(obj->uart); // Check if data is received status = ((uart->FR & UART_FR_RXFE) ? 0: 1); return status; } int serial_writable(serial_t *obj) { int status; UART_TypeDef *uart = (UART_TypeDef *)(obj->uart); // Check if data is transmitted status = ((uart->FR & UART_FR_BUSY) ? 0: 1); return status; } void serial_clear(serial_t *obj) { // UartHandle.Instance = (USART_TypeDef *)(obj->uart); // __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TC); // __HAL_UART_SEND_REQ(&UartHandle, UART_RXDATA_FLUSH_REQUEST); } void serial_pinout_tx(PinName tx) { //pinmap_pinout(tx, PinMap_UART_TX); } void serial_break_set(serial_t *obj) { // [TODO] } void serial_break_clear(serial_t *obj) { // [TODO] } #endif