[Solved] USB_DEVICE_DESCRIPTOR (Leonardo board)

Using Arduino Microcontrollers
1

Hello,

I wanted to know if there is a reason for that we cannot change the whole USB_DEVICE_DESCRIPTOR structure with:

  • Arduino\hardware\arduino\avr\bootloaders\caterina\Descriptors.c
  • Arduino\hardware\arduino\avr\bootloaders\caterina\makefile

For example if I want to change VID/PID and product name, I need to modify those values into:

  • Arduino\hardware\arduino\avr\boards.txt
leonardo.build.vid=0x
leonardo.build.pid=0x
leonardo.build.usb_product=""

Then if I want to change the other members of this structure, I need to change directly the bootloader file located at:

  • Arduino\hardware\arduino\avr\bootloaders\caterina\Caterina-Leonardo.hex

at line 29, because this line contain the structure of USB device descriptors, but I only success to changed SerialNumStrIndex (and by changing matched checksum ofc), I failed with others.

2

Do not cross-post. Other thread removed.

3

ok I just didn't know in which category should I open this post, they are so many categories related to my problem that I am kind lost.