m5stamp c3U on a mac using arduino side

[Trussell]

I cannot get this to work at the moment I get an error
I can see it on the USB port in Arduino and I did enable CDC on boot
upload.tool.serial is undefined.

By this I mean I create an empty file in Arduino and try to up load it

documentation is a little sparse

Any advice would be really appreciated

Thank you

[felmue]

Hello @Trussell

maybe this info can help?

Thanks
Felix