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Author Topic: Can Bus and PIC18F4685 suggestions  (Read 268 times)
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Elysion
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« on: July 23, 2018, 08:35:34 08:35 »

Hi All,

I'm starting a new hobby project with CAN. I have some PIC18f4685 in my hands. Does anyone used it for CAN purposes here?
I use EasyPIC v7 board with mikroc.

I want to communicate with my sensors in our garden. Network cable is an expensive solution for now. I want to try CAN.
Do you have any suggestions for CAN and for 18F4685?

Thanks,
Oguz
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Signal
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« Reply #1 on: July 23, 2018, 01:17:46 13:17 »

Do you have any suggestions for CAN and for 18F4685?
Take a look at errata. http://ww1.microchip.com/downloads/en/DeviceDoc/80000284F.pdf
Some notes:
1. There are two issues regarding CAN functionality. They have workarounds that you should implement. I doubt that microc library knows about that particular device but who knows...
2. Available silicon errata is unusually short and is only for the first A1 chip revision. I suppose xx85 series is a modified xx80 with more memory. The errata being so short you may consider as a sign that it is essentially bugfixed release or it was not very popular, and thus not well tested.

Anyway this chip is quite obsolete. Unless you specifically want to not throw away chips that could work for the good I'd consider more recent generations for new projects. Though I have no doubt that your project could be done with 18F4685, after all ten years ago Microchip targeted it for such tasks.
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