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As near as I can tell mine are correct, bottom and top silkscreen match and the pinout to the chip (as much as I can see) seem correct as well, though thank you for pointing that out, I'll keep that in mind for future since that's definitely the kind of thing I would not think to check.

Here is a screenshot that shows both the oscilloscope reading from the CANH and CANL lines, which definitely don't look right, given that they barely seem to change and are both at the same voltage. CANL is connected to the yellow signal, CANH is connected to the blue, not that they are...

My bad! Hadn't realized there were different versions. Here is the sketch I'm using, #include <FlexCAN_T4.h> FlexCAN_T4<CAN1, RX_SIZE_256, TX_SIZE_16> Can0; void setup(void) { Serial.begin(115200); delay(400); pinMode(6, OUTPUT); digitalWrite(6, LOW); /* optional tranceiver enable pin */...

The sketch is literally the CAN2.0_example_FIFO_with_interrupts code from the github with the ID modified be able to differentiate packets from one controller vs the other. I’ll adjust the reading to be analog and update if that changes anything, though Im still not seeing any messages at the...

I’m using a desktop oscilloscope (Analog Discovery 2), the DIO pins are 5V tolerant with a sample rate of 100 million samples / sec. I’m not super great at electrical testing, but I had thought that should be fine?

I'm using an off-the-shelf breakout for the CAN transceiver chip, the exact chip is seen here: https://www.amazon.com/WWZMDiB-SN65HVD230-Transceiver-Communication-Protection/dp/B0B82GJLH5/ I have tested with brand new ones as of today, so unless they were bad out of the box, I'm thinking I...

Sanity Check for Simple CAN Circuit Hi All, I had been working on a project a few months back and it ended up falling by the wayside, trying to pick it back up now and wanted to start out by validating a super simple communication circuit between two Teensy 4.0s. I'm running into repeated...

Ah, I see, I had attempted to verify if the TJA1050 supported CANFD, but it just cited compliance with the ISO 11898 standard, which CANFD is included under, so I had thought it was supported, thank you!

Advice on bad CANFD signal? Running into a weird issue with the CAN3 CANFD transmission. I've got my script setup as below, most of it matches the documentation's examples, and I've got it set up to broadcast a message every 500 ms. The system works fine for CAN2.0, but when I try and do it...