24c01-24c16读写驱动程序-24c01- 24c16 literacy Driver.zip

//24c01-24c16读写驱动程序， sbit a0=ACC^0; //定义ACC的位，利用ACC操作速度最快 sbit a1=ACC^1; sbit a2=ACC^2; sbit a3=ACC^3; sbit a4=ACC^4; sbit a5=ACC^5; sbit a6=ACC^6; sbit a7=ACC^7; void s24(void) { _nop_();scl=0;sda=1;scl=1;_nop_();sda=0;_nop_();scl=0; } void s240(void) { _nop_();scl0=0;sda0=1;scl0=1;_nop_();sda0=0;_nop_();scl0=0; } void p24(void) { sda=0;scl=1;_nop_();sda=1; } void p240(void) { sda0=0;scl0=1;_nop_();sda0=1; } unsigned char rd24(void) { sda=1; scl=1;a7=sda;scl=0; scl=1;a6=sda;scl=0; scl=1;a5=sda;scl=0; scl=1;a4=sda;scl=0; scl=1;a3=sda;scl=0; scl=1;a2=sda;scl=0; scl=1;a1=sda;scl=0; scl=1;a0=sda;scl=0; sda=1;scl=1;scl=0; return(ACC); } void wd24(unsigned char dd) { ACC=dd; sda=a7;scl=1;scl=0; sda=a6;scl=1;scl=0; sda=a5;scl=1;scl=0; sda=a4;scl=1;scl=0; sda=a3;scl=1;scl=0; sda=a2;scl=1;scl=0; sda=a1;scl=1;scl=0; sda=a0;scl=1;scl=0; sda=1;scl=1; } unsigned char read(unsigned int address){ unsigned char dd; dd=((address&0x7ff)/256)<<1; s24();wd24(0xa0|dd);scl=0;wd24(address);scl=0; s24();wd24(0xa1|dd);scl=0;dd=rd24();p24();return(dd); } void write(unsigned int address,unsigned char dd){ unsigned char ddd; ddd=((address&0x7ff)/256)<<1; s24();wd24(0xa0|ddd);scl=0;wd24(address);scl=0;wd24(dd);scl=0;p24(); time=0; //time为定时器时间参考，time增加1代表1ms,如果没有用定时器，取消该行 while (1) { s24(); wd24(0xa0|ddd); sda=1; if (sda==0) break; if (time>10) break; //此行防止由于eeprom器件损坏后的死循环 scl=0; } }