_i2c.h

抄水表手持POS代码

extern void start2();
extern void stop2();
extern void ack2();
extern bit  nack2();
extern void out_byte2(unsigned char byte);
extern unsigned char get_byte2();
extern bit  dummy_write2(unsigned char addr);
extern char _seq_write2(uchar no_bytes,uchar addr,uchar *bytes);
extern char _seq_read2(uchar no_bytes,uchar addr,uchar *bytes);
extern void start();
extern void stop();
extern void ack1();
extern bit  nack1();
extern void out_byte(unsigned char byte);
extern unsigned char get_byte();
extern char _seq_write(uchar no_bytes,uchar *bytes);
extern char _seq_read(uchar no_bytes,uchar *bytes);
extern void AT24C64_start();
extern void AT24C64_stop();
extern bit  nack();
extern void _ack();
extern void AT24C64_out_byte(unsigned char byte);
extern unsigned char AT24C64_get_byte();
extern bit  dummy_write(unsigned int addr);
extern uchar clock();
extern uchar clock2();

sbit PIN_SCA	=P2^6;
sbit PIN_SCL	=P2^5;

#define PIN_SCA1		    P22
#define PIN_SCL1		    P23

sbit AT24CXX_SDA=P0^0;
sbit AT24CXX_SCL=P1^0;