radar.c

T112 MCU源程码,用于T112外接MCU篇程,用来驱动模拟屏

#include "reg51.h"
#include "math.h"
#include "common.h"
#include "struct.h"
#include "system.h"
#include "twowire.h"
#include "T112OSD.h"
#include "OSDDROW.H"
#include "key1.h"





#define		uint	unsigned int

#define  speed    340
#define  time_min	(27/12/10000)


sbit channel0=P3^4;

sbit channel1=P4^0;
sbit channel2=P4^1;
sbit channel3=P4^2;

sbit XY_a=P3^5;
sbit XY_b=P3^6;


uCHAR count_num;
uint count_num1;
uCHAR back_num0;
uCHAR back_num1;
uCHAR back_num2;
uCHAR back_num3;

extern uCHAR back_num0;

#define	uchar unsigned char
#define	uint unsigned int

void delay(uint time)				///one loop use 14us
{
	uint i;
	for(i=0;i<time;i++);
}

void Send_40Hz(void)
{
	uchar j;
	EX0=1;
	while(1)
	{
		channel0=0;
		for(j=0;j<20;j++)
		{
			channel0=~channel0;
			if(P3&0x10)
			{	
				delay(1);
			}
			else
			{
				delay(0);
			}
		}
		delay(40);					//0.2/340=588.2us/14=66
//		EX0=1;
//		delay(8900);				//124ms=124000/14=14000				
	}
}


		
		
void INT0_Garage (void) interrupt 0					
{
	back_num0++;
	OSDShowDig(15,2,0x06,back_num0);
}