main.c

1

#include <reg51.h>

extern void Init_Max7219(void);//initialize max7219 
extern void Write_Max7219_byte(unsigned char temp);//send max7219 a byte
extern void Write_Max7219(unsigned char address,unsigned char dat);//send max7219 command and data
extern void Show_Max7219(unsigned int left,unsigned int right) reentrant;//十进制显示，第一个参数是7219左四位，第二个是右四位
extern void Byte_Max7219(unsigned char byte_data);//十进制输出一字节数据
extern void Regprint_Max7219(unsigned char byte_data);//二进制输出一字节数据，用于打印八位寄存器
extern void Interger_Max7219(unsigned long int interger) reentrant;//显示十进制整形数

#define Ain1 0x00
#define Ain2 0x01

extern void Writetoreg(unsigned char byteword);
extern unsigned int Read_16bitdata(void);
extern void Init_AD7705( unsigned char Channel );
extern unsigned int Average_Sample(unsigned int Num_Sample);
extern void Reset_AD7705(void);

void main(void)
{
	unsigned long int display_result = 0;
	unsigned int zero = 0;
	unsigned int i = 0;

	Init_Max7219();
	Show_Max7219(2588,5678);
	
	Reset_AD7705();
	Init_AD7705(Ain2);


	while(1)
	{

		display_result = 0;
	 	display_result = Average_Sample(10);
		Interger_Max7219((display_result)*0.290346*1.357466-2242.534);

	}

}