AT24C256完整程序

AT24C64C 语言程序 copyright lance include c8051F020 h include 24C256 h include LCD display h sbit ISCL P1 4 sbit ISDA P1 3 I2c Wait Wait for some time to get proper I2C timing void I2cWait void unsigned int i 10 24C64 unsigned int i 5 24C256 while i i2c start condition SDA 1 0 while SCL 1 void I2cStart void ISDA 1 ISCL 1 I2cWait ISDA 0 I2cWait ISCL 0 I2cWait I2c sotp condition SDA 0 1 while SCL 1 void I2cStop void ISDA 0 I2cWait ISCL 1 I2cWait ISDA 1 I2cWait I2c Init Initialize I2C interface Release I2c BUS void I2cInit void ISDA 1 ISCL 1 I2cWait I2c SentByte master transfer data to slave and return acknowledge bit don t include bit I2cSentByte unsigned char bytedata unsigned char i bit ack for i 0 i 8 i if bytedata else ISDA 0 bytedata 1 I2cWait ISCL 1 I2cWait ISCL 0 I2cWait ISDA 1 I2cWait ISCL 1 I2cWait ack ISDA ISCL 0 I2cWait return ack I2c ReceiveByte slave trransfer data to master unsigned char I2cReceiveByte void unsigned char i unsigned char bytedata 0 ISCL 0 I2cWait for i 0 i 8 i ISCL 1 I2cWait bytedata bytedata 8 送高位地址 I2cSentByte addr 送低位地址 I2cSentByte value I2cStop delay1ms 15 24c64 WriteMulti page 0 255 count 要写入的数个数 void 24c64WriteMulti unsigned int page unsigned char count unsigned char SenBuf unsigned char i unsigned int addr page 32 I2cStart I2cSentByte 0 xa0 I2cSentByte addr 8 送高位地址 I2cSentByte addr 送低位地址 for i 0 i 8 送高位地址 I2cSentByte addr 送低位地址 I2cStart I2cSentByte 0 xa1 temp I2cReceiveByte SendAcknowledge 1 I2cStop return temp 24c64 ReadMulti page 0 256 count0 32 count 要读出的数的个数 void 24c64ReadMulti unsigned int page unsigned char count unsigned char RedBuf unsigned int addr page 32 unsigne