Fun fun I2C need help

[subzero349]

Is anyone familiar with I2C?

I need to control a TC74 temperature sensor with an PIC16F877 I2C controller.

this is the PICDEM 2 PLUS demo board. Does anyone else have this board?

I'm not sure what the sequence is to get this thing to work....

any help would be appreciated!

 

[kinjalgp]

Getting I2C device working for the first time is a painful job. But once you get the trick, its a childs play with other devices. All you got to do is stick to the Bit-Banging I2C specifications and write the routines accrdingly.

Get the I2C specifications manual from Philips website and write your own routines or you can download a ready PIC I2C code from the net. The basic routines you require are
I2C_START
I2C_STOP
I2C_ACK
I2C_NACK
I2C_SEND_BYTE
I2C_RECV_BYTE
I2C_DELAY

If you get, these is any code thats sufficient for you. Be sure of crytal speed and I2C_DELAY. I2C devices cannot operate at more than 400kHz.

 

[subzero349]

Thanks for the tips!