SERIAL CLONER BUILD CONSTRUCT HOW TO

Since avrdude doesn’t officially support the ATMEGA8U2, specify the at90usb82 part instead and use the -F flag to tell avr to ignore the device signature. Make sure the device signature matches (0x1E9389). If it reads 0x1E950F, you have the ISP connected to the ATMEGA328, not the ATMEGA8U2. If you program the USB code onto the ATMEGA328 by accident, you’ll overwrite the bootloader. Get the Arduino source from GitHub or copy it from the IDE install (/usr/share/arduino) into a directory of your choice – Let’s call it $SRC.Make sure you can build and burn the Arduino bootloader on the UNO.This will confirm that your build environment is setup correctly and your programmer is working. You’ll need version 100807, even though there are newer versions. Now modify the DFU and USB firmware makefiles to use LUFA and the STK500 programmer: I like to unzip it into $SRC/hardware/arduino/firmwares. Set the LUFA path and avrdude parameters as necessary for your setup. Update the UNOĪs a final test of your hardware setup, upload the pre-built firmware to the ATMEGA8U2. cd $SRC/hardware/arduino/firmwares/atmegaxxu2Īvrdude -p at90usb82 -F -P /dev/ttyS0 -c stk500v2 -U flash:w:UNO-dfu_and_usbserial_combined.hex -U lfuse:w:0xFF:m -U hfuse:w:0xD9:m -U efuse:w:0xF4:m -U lock:w:0x0F:m BUILD A CONSTRCUCT SERIAL CLONER UPDATE This will write both the DFU bootloader and the USB serial code in one pass. BUILD A CONSTRCUCT SERIAL CLONER SOFTWAREĬheck that you can still upload sketches to the UNO using the Arduino IDE.BUILD A CONSTRCUCT SERIAL CLONER UPDATE.BUILD A CONSTRCUCT SERIAL CLONER INSTALL.

SERIAL CLONER BUILD CONSTRUCT HOW TO

BUILD A CONSTRCUCT SERIAL CLONER HOW TO.

Serial cloner build construct