main.h

mcp3221 ad转换。通过iic串口读取ad转换数值

#include <reg51.h>
#include <intrins.h>

#define  uchar unsigned char
#define  uint unsigned int
typedef bit 			BIT;
typedef bit 			BOOL;
typedef unsigned char 	BYTE;
typedef unsigned int    WORD;
typedef unsigned long	DWORD;

void start_i2c(void);
void stop_i2c(void);
void  send_byte(uchar c);
uchar  receive_byte(void);
void ack_i2c(bit a);
bit send_data(uchar sla,uchar c);
bit send_string(uchar sla,uchar suba,uchar *s,uchar num);
bit receive_data(uchar sla,uchar *c);

bit receive_string(uchar sla,uchar *s,uchar num);

#define  _Nop()   _nop_()