PIC16F877单片机硬件IIC编程实例

BANKSEL I2C_Addr ; The "BANKSEL" may not necessary if I2C_Addr is @ the same bank with SSPBUF

 movf I2C_Addr,W ; The Address you wish to "READ" from

 BANKSEL SSPBUF

  movwf SSPBUF

 call WaiTI2C

  call RstarTI2C ; Restart CondiTIon !!

 call WaiTI2C  ; Wait Until Restart OK !!

 BANKSEL SSPBUF

 movlw B'10100001' ; Write Read Command

 movwf SSPBUF

 call WaitI2C

 call RecI2C  ; Enable I2C Receive

 call WaitI2C  ; Wait Until Buffer Received

 BANKSEL SSPBUF

 movf SSPBUF,W ; Save to I2C_Data First !!