Author Topic: Trouble with fuse setting on At90usb646/1286  (Read 673 times)

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Offline xiaoquana

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Trouble with fuse setting on At90usb646/1286
« on: Fri, 20 March 2020, 06:19:13 »
Hey, i am customizing a keyboard with the at90usb646/1286,and when i came to burn bootloader into the blank  chip with a isp programer , i don't know how to set the correct fuse . i saw these pagehttps://forum.arduino.cc/index.php?topic=167579.0 ,  and it linked to the github https://github.com/DynamicPerception/ArduinoAT90USBwhere the bootloader.hex is , but nothing about the fuse setting was mentioned in the page and the github repositories.
Can any one give me some idea to set the fuse , if i want burn a Arduino-modified booloader.
my sch is refer to this teensy++
« Last Edit: Fri, 20 March 2020, 06:21:06 by xiaoquana »

Offline hasu

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  • Location: Tokyo, Japan
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Re: Trouble with fuse setting on At90usb646/1286
« Reply #1 on: Sun, 22 March 2020, 03:44:45 »
That github repo has boards.txt, check it.
TMK products:HHKB Alt  ⌨ConvertersAlps64FC660C AltFC980C Alt

Offline xiaoquana

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Re: Trouble with fuse setting on At90usb646/1286
« Reply #2 on: Mon, 23 March 2020, 02:39:53 »
thank you may big brother ,  but i still have some troubles. i notice that the tool "avrdude" is mentioned in the board.txt . but i am not used to using the "avrdude" command tool , for it is troubling to set it .
can i just use the progisp to burn the hex into the chip with a usb-isp programer ?

Offline FaisonSiu

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Re: Trouble with fuse setting on At90usb646/1286
« Reply #3 on: Mon, 30 March 2020, 10:14:57 »
Have you tried it yet? What is the result?