main.c

周立功的EASYARM2131的测试程序

/****************************************Copyright (c)**************************************************
**                               Guangzou ZLG-MCU Development Co.,LTD.
**                                      graduate school
**                                 http://www.zlgmcu.com
**
**--------------File Info-------------------------------------------------------------------------------
** File name:			main.c
** Last modified Date:  2004-09-16
** Last Version:		1.0
** Descriptions:		The main() function example template
**
**------------------------------------------------------------------------------------------------------
** Created by:			Chenmingji
** Created date:		2004-09-16
** Version:				1.0
** Descriptions:		The original version
**
**------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
** Version:
** Descriptions:
**
********************************************************************************************************/
#include "config.h"
typedef struct UartMode
{
 	uint8  datab ;
 	uint8  stopb;
 	uint8  parity;
}UARTMODE ;

//uint8 rec_buf[8];
uint8 rec_buf;
uint8 rec_new,sed_new;

void __irq IRQ_UART0()
{
	uint8 i;
	if((U0IIR & 0x0F) == 0x04)
	{
	 	rec_new = 1;
	 	rec_buf = U0RBR;
	}
	else if((U0IIR & 0x0F) == 0x02)
	{
		sed_new = 1;
		
	}	
	/*for(i=0;i<8;i++)
	{
	 rec_buf[i] = U0RBR;
	}*/
	i = U0IIR ;
	VICVectAddr = 0x00;
}

void __irq IRQ_UART0_SED()
{
    
	VICVectAddr = 0x00;
}


int8 UART0_Init(uint32 baud,UARTMODE set)
{
	uint32 bak;
	if((baud == 0) || (baud >115200)) return 0;
	if((set.datab < 5) || (set.datab > 8)) return 0;
	if((set.stopb == 0) || (set.stopb >2)) return 0;
	if(set.parity >4) return 0;
	U0LCR = 0x80;
	bak = (Fpclk >> 4) / baud ; 
	U0DLM = bak >> 8;
	U0DLL = bak & 0xFF;
	bak = set.datab - 5;
	if(set.stopb == 2) bak |= 0x04;
	if(set.parity != 0)
	{
	 	set.parity = set.parity - 1;
	 	bak |= 0x08;
	}
	
	bak |= set.parity << 4 ;
	U0LCR =bak;
	return (1);
	
}

void UART0_SendByte(uint8 dat)
{
	U0THR = dat ;
}

void UART0_SendBuf()
{
 uint8 i;
/* for(i=0;i<8;i++)
 {
 	UART0_SendByte(rec_buf[i]) ;
 }*/
 sed_new = 0;
 UART0_SendByte(rec_buf) ;
 i=U0THR;
// while((U0LSR & 0x20) == 0) ;
}

int main (void)
{// add user source code
	UARTMODE set;
	set.datab = 8;
	set.stopb = 1;
	set.parity = 0;
	rec_new = 0;
	sed_new = 1;
	PINSEL0 = 0x00000005;
	UART0_Init(115200,set);
	U0FCR = 0x01;
	U0IER =0x03;
	IRQEnable() ;
	VICIntSelect = 0x00000000;
	VICVectCntl0 = 0x20 | 0x06 ;
	
	VICVectAddr0 = (uint32) IRQ_UART0;
	VICIntEnable = 1<<0x06;
	while(1)
	{
	 	if(rec_new == 1)
	 	{
	 		rec_new = 0;
	 		if(sed_new)
	 			UART0_SendBuf();
	 	}
	}
    return 0;
}
/*********************************************************************************************************
**                            End Of File
********************************************************************************************************/