hii all,
i am going to interface OLEDM204 lcd with PICf1823 using I2C. i have done all the thing .but now i want to change the contrast and i could not. in datasheet they said that you have to set RE and SD bit
and then only you can do that. i tried it but fail. some one having experience in that cam guide me
Code:
I2C_Is_Idle();
I2C1_Start();
I2C_Is_Idle();
I2C1_Wr(0x78);
I2C_Is_Idle();
I2C1_Wr(0x80);
I2C_Is_Idle();
I2C1_Wr(0x08); //Display blink cursor OFF
I2C_Is_Idle();
I2C1_Wr(0x3A); //FunctionSet: N=1 BE=0 RE=1 IS=0
I2C_Is_Idle();
I2C1_Wr(0x79); //set SD
I2C_Is_Idle();
I2C1_Wr(0xFF); //set contrast
I2C_Is_Idle();
I2C1_Wr(0x09); //4-line mode
I2C_Is_Idle();
I2C1_Wr(0x05); //View 0°
I2C_Is_Idle();
I2C1_Wr(0x38); //FunctionSet: N=1 DH=0 RE=0 IS=0
I2C_Is_Idle();
I2C1_Wr(0x3A); //FunctionSet: N=1 BE=0 RE=1 IS=0
I2C_Is_Idle();
I2C1_Wr(0x72); //ROM Selection (RE muss 1 sein)
I2C_Is_Idle();
I2C1_Wr(0x00); //ROM_A = 0x00, ROM_B = 0x04, ROM_C = 0x0C
I2C_Is_Idle();
I2C1_Wr(0x38); //FunctionSet: N=1 DH=0 RE=0 IS=0
I2C_Is_Idle();
I2C1_Wr(0x0D); //Display blink cursor on
I2C_Is_Idle();
I2C1_Wr(0x01); //Clear display
I2C_Is_Idle();
I2C1_Stop();