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Hi
I have an error that shows its ugly head now and then.... The µC I'm using is C8051F122.
When I debug I can locate the problem, but the bug does not show the same place in code all times.
What I see now is that when stepping over the following line:
SMB0CN = 0x44;
The register SMB0CN actually is set to 0xC4. This sets the BUSY bit in the register.
It can be resolved by removing the µC supply, but a RESET won't do. But after some time the problem shows again.....
Does anyone have an idea????
Best Regards....
But I'm not sure what how to prevent that communication is stopped halfway....
You quite probably can't. Reset will reset everying. Immediately. Software gets no say in what is stopped or not, once the CPU resets.
You'll have to reset I2C communication state in the slaves somehow...