AT24C512存储器调试C程序.doc

#pragma sfr #pragma di #pragma ei#pragma NOP#define uchar unsigned char#define uint unsigned int#define VCTRL P3.1#define PM_VCTRL PM3.1#define WP P5.1#define PM_WP PM5.1#define SCL P5.2#define PM_SCL PM5.2#define SDA P5.3#define PM_SDA PM5.3#define WSlave_Addr 0xA0#define RSlave_Addr 0xA1void NEC_int() WDTE=0xAC;CMC=0x00;CSC=0x80;CKC=0x09;PER0=0xFF;PER1=0x01;OSMC=0x00;OSTS=0x01;void delay3us()NOP();NOP();NOP();NOP();NOP();NOP();NOP();NOP();NOP();NOP();NOP();NOP();void wait100us()int i;for(i=0;i200;i+)NOP();NOP(); void Start()SDA=1;delay3us(); SCL=1; delay3us();SDA=0;delay3us(); SCL=0;delay3us();void Stop()SDA=0; delay3us(); SCL=1; delay3us();SDA=1;void Write(x) int i; PM_SDA=0;PM_SCL=0; for(i=0;i8;i+) SCL=0; delay3us(); if(x&0x80) SDA=1; else SDA=0; delay3us(); SCL=1; delay3us(); x=x1; SCL=0; PM_SDA=1; delay3us(); SCL=1; delay3us(); SCL=0; delay3us(); PM_SDA=0;uchar Read()int i;uchar rdata=0; PM_SDA=1;PM_SCL=0; delay3us();SCL=0;NOP();for(i=0;i8;i+)rdata=rdata1;SCL=1;NOP();NOP();if(SDA=1)rdata+;SCL=0;NOP();NOP();return rdata;void Ram_write() int i;WDTE=0xAC; PM_SDA=0;PM_SCL=0;PM_WP=0;WP=0; wait100us(); Stop(); Start(); Write(WSlave_Addr); Write(0x00); Write(0x00); Write(0xAA); Write(0xBB); Write(0xCC); Stop();uchar Ram_Read() uchar data; Write(WSlave_Addr); Write(0x00); Write(0x00); Start(); Write(RSlave_Addr); data=Read(); return data;void main() uchar y=0; int i;NEC_int();PM_VCTRL=0;VCTRL=0;Ram_write()； Stop(); for(i=0;i10;i+) wait100us(); wait1