110 lines
2.2 KiB
C
110 lines
2.2 KiB
C
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/*
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* File : board.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2009 - 2011 RT-Thread Develop Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2011-02-24 Bernard first implementation
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#include "board.h"
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#include "mb9bf506r.h"
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#include "core_cm3.h"
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extern const uint32_t SystemFrequency;
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#define UART0 FM3_MFS0_UART
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struct serial_int_rx uart0_int_rx;
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struct serial_device uart0 =
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{
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UART0,
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&uart0_int_rx,
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RT_NULL
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};
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struct rt_device uart0_device;
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#define UART2 FM3_MFS2_UART
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struct serial_int_rx uart2_int_rx;
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struct serial_device uart2 =
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{
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UART2,
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&uart2_int_rx,
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RT_NULL
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};
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struct rt_device uart2_device;
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/**
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* @addtogroup FM3
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*/
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/*@{*/
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/**
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* This is the timer interrupt service routine.
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*
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*/
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void rt_hw_timer_handler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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rt_tick_increase();
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/* leave interrupt */
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rt_interrupt_leave();
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}
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void rt_hw_uart2_rx_handler(void)
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{
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#ifdef RT_USING_UART2
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extern struct rt_device uart2_device;
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extern void rt_hw_serial_isr(struct rt_device *device);
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/* enter interrupt */
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rt_interrupt_enter();
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rt_hw_serial_isr(&uart2_device);
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/* leave interrupt */
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rt_interrupt_leave();
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#endif
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}
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/**
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* This function will handle init uart
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*/
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static void rt_hw_uart_init(void)
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{
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/* Set Uart Ch2 Port, SIN2_1, SOT2_1 */
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FM3_GPIO->PFR2 = FM3_GPIO->PFR2 | 0x0030;
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FM3_GPIO->EPFR07 = FM3_GPIO->EPFR07 | 0x000a0000;
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uart2.uart_device->SMR = SMR_MD_UART | SMR_SOE;;
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uart2.uart_device->BGR = (40000000UL + (BPS/2))/BPS - 1;
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uart2.uart_device->ESCR = ESCR_DATABITS_8;
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uart2.uart_device->SCR = SCR_RXE | SCR_TXE | SCR_RIE;
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UART_ENABLE_IRQ(MFS2RX_IRQn);
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UART_ENABLE_IRQ(MFS2TX_IRQn);
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}
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/**
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* This function will initial FM3 Easy Kit board.
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*/
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void rt_hw_board_init()
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{
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/* init systick */
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SysTick_Config(SystemFrequency/RT_TICK_PER_SECOND - 1);
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rt_hw_uart_init();
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}
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/*@}*/
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