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How to prevent #use I2C to hang up

 
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capfelix



Joined: 02 Dec 2005
Posts: 9

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How to prevent #use I2C to hang up
PostPosted: Tue Mar 27, 2007 10:12 am     Reply with quote
Hi,

Sometimes my I2C bus will hang at #use I2C line during emulation. Is there anyway to break out from this situation (without using WDT) or anyway to prevent it from getting stuck at #use I2C during I2C communication?

Another thing is that sometimes I would get rubbish data from the I2C communication. Is the I2C function is CCS foolproof? What can cause this to happen?

Cheers!
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Tue Mar 27, 2007 11:34 am     Reply with quote
Quote:
Sometimes my I2C bus will hang at #use I2C line during emulation.

Give the name of the emulator and the i2c chip that you're using,
and the PIC, etc.

Quote:

Is there anyway to break out from this situation (without using WDT)
or anyway to prevent it from getting stuck at #use I2C during I2C
communication?

capefelix = Fabri ?
capfelix



Joined: 02 Dec 2005
Posts: 9

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PostPosted: Thu Mar 29, 2007 3:21 am     Reply with quote
First of all, I'm not Fabri although our problem seems similar.

I'm using ICD from Microchip as the emulator. Another thing is that v3 and v4, I noticed the I2C routine in v3 is more stable than v4. What's your comments.

I'm using PIC18F2455.
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