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donperryjm
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Ddonperryjm reacted to CollinK's post in the thread FlexCAN_T4.h - Detecting If Canbus Chip Is present with
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I believe this is the best way. -
Ddonperryjm replied to the thread FlexCAN_T4.h - Detecting If Canbus Chip Is present.A scope is an absolute necessity sometimes, glad I have one. Fixed using the solution suggested above. When the pin is present the CRX pin is high.
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Ddonperryjm replied to the thread FlexCAN_T4.h - Detecting If Canbus Chip Is present.Something like that is worth testing. I'll get back to you!
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Ddonperryjm reacted to KenHahn's post in the thread FlexCAN_T4.h - Detecting If Canbus Chip Is present with Like.
Not totally sure if this will work, so just brainstorming here. The CAN bus transceiver receive pin going to the Teensy is always being driven either HIGH or LOW. If there is no CAN bus activity or it is disconnected, the output is driven LOW...
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Ddonperryjm replied to the thread FlexCAN_T4.h - Detecting If Canbus Chip Is present.OK, but there is no way to make changes to hardware at this point. It's in production and in use. I have a firmware update that only canbus devices should get. Don't want to be doing two firmware and leaving it up to the client to decide.
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Ddonperryjm posted the thread FlexCAN_T4.h - Detecting If Canbus Chip Is present in Project Guidance.Hey guys, I have a device with some menu items and one of them is a canbus menu. I want only the devices that have the SN65H CAN chip to see that menu. Is there any way I can code this?
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