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Forum Index : Microcontroller and PC projects : I2C Question

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OA47

Guru

Joined: 11/04/2012
Location: Australia
Posts: 982
Posted: 10:35am 10 Oct 2016
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I am using a 150 chip with MMBasic version 4.5E and the program (which was working for some time) now crashes with ERROR: I2C is busy when it tries to update the clock from a DS3231 using Jman's RTC code. Could anyone throw some light on the possible causes?

Thanks
Graeme
 
Zonker

Guru

Joined: 18/08/2012
Location: United States
Posts: 767
Posted: 11:21am 10 Oct 2016
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Humm... Maybe it's time to move up to a 170 core with the fresh firmware... I once had a MM board go Jessy on me after a few days, as it was new hardware, I re did a visual on the PCB, seemed to be OK, so I re-flashed the PIC and problem went away...Not sure why... But, sometimes, weird crap happens...
 
Grogster

Admin Group

Joined: 31/12/2012
Location: New Zealand
Posts: 9588
Posted: 11:43pm 10 Oct 2016
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I would have to agree with Zonker - the 150 is quite an old version now, and there could indeed be some kind of obscure bug in there somewhere, which has never been found and squished due to MMBASIC moving up to the 170 chips.

If you want a free 170 DIL chip, flick me a PM - you only have to pay postage.
We can't have you struggling along with the old 150 core nowadays.....
Smoke makes things work. When the smoke gets out, it stops!
 
OA47

Guru

Joined: 11/04/2012
Location: Australia
Posts: 982
Posted: 11:10am 11 Oct 2016
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The news is that the 150 has a reprieve The issue was a hardware fault, not a firmware/software issue. The donut had disconnected from the track on the I2C data line. This could have happened any time in the past and was still making contact intermittently.

Thanks Zonker for your comments and thanks Grogster for your offer. I still have a tube of 150's to use so I would like to find jobs for them. I would hate to see them live the rest of their life living in the tube and not the outside world exercising the great work that Geoffg has done in making these little fellas fun to use.

Graeme
 
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