/* 24C64子程序 */bit?? I2C_Start(void);void? I2C_Stop(void);void? I2C_Ack(void);void? I2C_Nack(void);bit?? I2C_Send_Byte( uchar);uchar I2C_Receive_Byte(void);void? AT24C64_R(void *mcu_address,uint AT24C64_address,uint count);void? AT24C64_W(void *mcu_address,uint AT24C64_address,uint count);void? Delay_10_uS(void){?char i=10;?while(i--);}void Delay_N_mS( uint n_milisecond)? /* n mS delay */{?uchar i;?while(n_milisecond--)?{? i=37;? while(i--);?}}bit I2C_Start(void){

/*启动I2C总线的函数，当SCL(SCK)为高电平时使SDA产生一个负跳变*/?Delay_10_uS();?I2C_SDA =1;?Delay_10_uS();?I2C_SCK =1;?Delay_10_uS();?if ( I2C_SDA == 0) return 0;?if ( I2C_SCK == 0) return 0;?I2C_SDA = 0;?Delay_10_uS();?I2C_SCK = 0;?Delay_10_uS();?return 1;}void? I2C_Stop(void){

/*终止I2C总线，当SCL为高电平时使SDA产生一个正跳变*/?Delay_10_uS();?I2C_SDA = 0;?Delay_10_uS();?I2C_SCK = 1;?Delay_10_uS();?I2C_SDA = 1;?Delay_10_uS();}void I2C_Ack(void){?Delay_10_uS();?I2C_SDA=0;?Delay_10_uS();?I2C_SCK=1;?Delay_10_uS();?I2C_SCK=0;?Delay_10_uS();}void I2C_Nack(void){?Delay_10_uS();?I2C_SDA=1;?Delay_10_uS();?I2C_SCK=1;?Delay_10_uS();?I2C_SCK=0;?Delay_10_uS();}bit I2C_Send_Byte( uchar d){?uchar i = 8;?bit bit_ack;?while( i-- )?{? Delay_10_uS();? if ( d &0x80 )?? I2C_SDA =1;? else???????????? I2C_SDA =0;? Delay_10_uS();? I2C_SCK = 1;? Delay_10_uS();? I2C_SCK = 0;? d = d << 1;?}?Delay_10_uS();?I2C_SDA = 1;?Delay_10_uS();?I2C_SCK = 1;?Delay_10_uS();?bit_ack = I2C_SDA;?I2C_SCK =0;?Delay_10_uS();?return bit_ack;}uchar I2C_Receive_Byte(void) {?uchar i = 8, d;?Delay_10_uS();?I2C_SDA = 1;?while ( i--)?{? d = d << 1;? Delay_10_uS();? I2C_SCK =1;? if ( I2C_SDA ) d++;? Delay_10_uS();? I2C_SCK =0;?}?return d;}void AT24C64_W(void *mcu_address,uint AT24C64_address,uint count){?DOG_WDI=!DOG_WDI;?DOGTIME=0;?while(count--)?{? I2C_Start();? /*I2C_Send_Byte( 0xa0 + AT24C64_address /256 *2);*/? /* 24C16? USE */? I2C_Send_Byte( 0xa0 );? I2C_Send_Byte(? AT24C64_