Core 2 and COMMU
-
@felmue Yes, thanks that was it :-)
So basically you compile & upload your sketch, you wait until the "...." appears, you press the button and then the upload works.
Thanks again. -
Hello @ChrisZang
glad to hear you got it working.
@TLS : thank you for figuring out the issue and letting us know.
Thanks
Felix -
@chriszang and one more thing that I just learned:
The GPIO for the CS Pin for the mcp2515 is 27 (not 12 as the documentation says).
If you want to initialize the mcp2515 in the COMMU do this:MCP2515 CAN0(27); // (mcp2515 library)
or
MCP_CAN CAN0(27); // (mcp_can library) -
@chriszang and another update.
So I am happily working on my CAN receiver sketch and just noticed that I forgot to press the button that grounds INT-output of the mc2515 but the upload still worked. Gave it another try (w/o pressing the button) and it's still working - weird.
Then I swapped this COMMU module for my 2nd COMMU Module and here the upload doesn't work.
My explanation is that the grounding of the mcp2515 INT-output basically created a short circuit in the transistor that controls this pin and eventually burned it out. Not a big problem for me as
a) I am not using interrupts in my sketch
b) I have a 2nd COMMU unit
I just wanted to warn you guys that grounding the INT output has unintended consequences.
Hello! It looks like you're interested in this conversation, but you don't have an account yet.
Getting fed up of having to scroll through the same posts each visit? When you register for an account, you'll always come back to exactly where you were before, and choose to be notified of new replies (either via email, or push notification). You'll also be able to save bookmarks and upvote posts to show your appreciation to other community members.
With your input, this post could be even better 💗
Register Login