I'm just starting with SAMD21 Xplained Pro kit and 'Start' online tool, but have plenty of experience with mcu's in general and other tools.
I've tried to load some USB CDC examples but the start tool complains that it can't load some components, so I've tried to build an example from scratch, however when I try to add the USB CDC middleware, I get message "not enough resources".
- start new project
- configure pins required
- add USB driver
- configure clocks, 48MHz from PLL going through clk generator to USB device
- try to add USB CDC middleware -> message "not enough resources" at bottom of add components dialog, and doesn't allow ,me to add component.
I just want to get a basic USB serial echo going as an example so I can build my app from there. I don't really want to use ASF as I'm trying to use minimal resources and have read lots of posts suggesting this uses significant amounts of memory.
I've gone through the user guide and tutorials, as well as quick search of forums but to no avail. Is anyone able to help?
Thanks in advance