I see error frames on the CAN bus whenever my code starts up, before the CAN controller is initialized. What is a common reason for this?

lpcware — Fri, 02 Sep 2016 22:05:52 GMT

The most common reason is that the CAN_TX pin has been set to logic zero before the CAN controller is initialized and enabled. Even a brief period can cause a burst of error frames.
Set the pin state to logic one before setting the CAN_TX pin to be an output. Alternatively, configure and initialize the CAN controller fully before connecting it to the CAN_TX and CAN_RX pins.

"FAQ contribution from Embedded Systems Academy, experts in CAN bus. For more information visit www.esacademy.com"

LPC FAQsのトピックI see error frames on the CAN bus whenever my code starts up, before the CAN controller is initialized. What is a common reason for this?

I see error frames on the CAN bus whenever my code starts up, before the CAN controller is initialized. What is a common reason for this?