main.c

国内某测温系统信号处理处理板的代码

#include "config.h"

unsigned char dp2rass[5];
unsigned int test_freq;
unsigned char rass2dp=1;
unsigned int seed;
unsigned char rxed_flag=0;//接收完数据为1
unsigned char dp2rass[5];
unsigned char work_state;
unsigned char work_mode;
unsigned char work_grade;
unsigned char Ns;//频率点的个数
unsigned int Fh,Fl;
unsigned char TCNT1_L;
unsigned char TCNT1_H;
unsigned int D15_0;//为2315控制字
unsigned char timer1;



void main(void)
{
	//unsigned int rand;
	//unsigned int first,second;
	//unsigned char x,y;
	//unsigned int num,mod1=0;
	unsigned int j=1;
	
 	CLI(); //stop errant interrupts until set up
 	port_init();
 	timer1_init();
 	uart0_init();
 		
	MCUCR = 0x00;
	EMCUCR = 0x00;
	GICR = 0x00;
 	TIMSK = 0x80;
	SEI(); //re-enable interrupts
 	//all peripherals are now initialized
		  
	do
		{
			if(rxed_flag==1)      //如果刚刚接收完dp的数据，则
				{
					if(!(dp2rass[0]&0x01))//判断是命令还是数据请求
						UDR=rass2dp;   //为0时是dp请求rass的状态信息,	                        
		      else             //为1时是dp发送给rass的命令 
		      	{
		      		work_state=(dp2rass[0]&0x02)>>1; 
 		  				if(work_state==0)      //如果是关闭工作命令，则
 		  					{
 		  						ACSR = ACSR & 0xF7;  //关闭时间、比较中断
 		  						TCCR1B = 0x00;       
 		  						ml2035(0,1);          //关闭2305，1666
 		  						ds1666(128,0);
 		  					}
 		  				else                  //如果是开始工作指令的话
 		  					{
 		  						TCCR1B = 0x05;       //start Timer1,comparator
 		  						comparator_init();
 		  						data_process();
 		  						seed=TCNT1L;
 		  						ds1666(128,0);
 		  						switch(work_grade)
										{
											case 0: ds1666(128,1);break;
											case 1: ds1666(119,1);break;
											case 2: ds1666(110,1);break;
											case 3: 
											defaulf:ds1666(96,1);
										}
								}
							}
						rxed_flag=0;
					}
					
				if(timer1==1)    //计数溢出中断后改变频率
					{
						if(work_mode==0)   //random mode
							D15_0=rand(seed);
						else
							{
								D15_0=line(j++);
								if(j>Ns)
									j=1;									
							}
						timer1=0;
					}
	 }							
	while(1);	
}