I2C problems

[Mad_Labs]

Hi All,

I'm having trouble with I2C. I am trying to communicate with a MAX6953, which is a 5x7 LED matrix display driver. I have had the device up and running with a Stamp, but can't get it to work with a PIC.

The PIC I am using is the 16F88. I am using the internal OSC at 8mHz. I am using portb.0 for SDA and portb.1 for SCL. I have tried using the DEFINE I2C_Slow.

Any ideas what could be causing the problem?

Thanks,

Jonathan

[Melanie]

Defines should all be in UPPERCASE and ensure you check your SPELLINGS of them, as they may not flag errors in any compilation...

http://www.picbasic.co.uk/forum/showthread.php?t=558

I2CREAD and I2CWRITE are really easy to fly with no issues providing you follow the rules in the PICBasic manual...

http://www.picbasic.co.uk/forum/showthread.php?t=587

Please do check the FAQ's...

[Mad_Labs]

Melanie,

I had checked the FAQ, your posts and the book. The problem turned out to be (after mucho hair pulling) a bum PIC pin.

Thanks for the help tho!

Jonathan