I ordered several Atmega32u4 from China. They promised to program the chips before shipping and asked the HEX file for that.
I provided them with the Leonardo-prod-firmware-2012-04-26.hex Leonardo bootloader. They told me that HEX file is OK and the chips are programmed.
Yesterday I received the controllers. But seems bootloader is not programmed correctly.
The Arduino software doesn't recognize the device.
Today I'll try to update the bootloader by my Arduino to see if these chips are alive or no.
In the meanwhile I have a several questions.
- The provided hex file is enough or I need to provide more information?
- Does hex file contain the fuse information?
Any suggestion please?
Thank you very much.