rohoog

I have now 'hardcoded' the BOARDS_TXT variable to the correct location. This gets me a little further, but the cpu model is passed to the g++ command line as -mmcu=cortex-m0plus,...

OK I see I need to include Sam.mk instead of Arduino.mk... And I have to not define this BOARDS_TXT variable.

I would say that a more important reason is that cat is uni-directional: you cannot type any text to your arduino serial port and expect it to be readable using...

Without the array index overflow change, the optimization will expose the index overflow problem. The epd binary will cause a segmentation fault at the very end of the run.

I didn't have any problem using the software (master branch 751a9fb) on RPi4 64 bit Pi OS.

Yes there are HID buttons too. How would the HID buttons have such an impact on the available bandwidth? The SA9023 is USB2.0 full-speed compliant (not high-speed) according to the...

I tried unbinding the HID (and `tree /sys/bus/usb/drivers/usbhid/` indeed shows unbinding was done), but it doesn't make the ENOSPC error go away.

What is "the maximum possible" for full speed USB-2 on RPI-4? Is it really less than 4 Mbit/s? How are these calculations done? Does it only take the 'worst case'...

Nothing else connected, see the requested attached. [rpi-eeprom-update.txt](https://github.com/raspberrypi/linux/files/9057982/rpi-eeprom-update.txt) [lsusb-v.txt](https://github.com/raspberrypi/linux/files/9057983/lsusb-v.txt)

@P33M , could you get any hint from the requested outputs as of why the bandwidth is deemed insufficlent?