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avr_bootloader:bootloader [2020/03/23 18:53]
admin [Burning the Bootloader with the AVRdude] 		avr_bootloader:bootloader [2020/03/23 20:32]
admin [Burning the Bootloader with the AVRdude]
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 === Fuse Bits === === Fuse Bits ===
-In the board.txt file the fuses bits are set like that:+In the board.txt file for the Arduino UNO the fuse bits are set like that:
   uno.bootloader.low_fuses=0xFF   uno.bootloader.low_fuses=0xFF
   uno.bootloader.high_fuses=0xDE   uno.bootloader.high_fuses=0xDE
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 A good manual for calculating the fuse bits one findes here [[https://​www.instructables.com/​id/​How-to-change-fuse-bits-of-AVR-Atmega328p-8bit-mic/​]]. A good manual for calculating the fuse bits one findes here [[https://​www.instructables.com/​id/​How-to-change-fuse-bits-of-AVR-Atmega328p-8bit-mic/​]].
 +
 +=== ... with the Paper-USBasp Programmer ====
 +
 +{{:​avr_bootloader:​paper-usbasp_programming_board.jpg?​400|}}\\
 +
 +For setting the fuse bits one has to type:
 +  $ sudo avrdude -p m328p -c usbasp -P usb -U lfuse:​w:​0xFF:​m -U hfuse:​w:​0xDE:​m -U efuse:​w:​0xFD:​m
 +And for the bootloader:
 +  $ sudo avrdude -p m328p -c usbasp -P usb -U flash:​w:​optiboot_atmega328.hex:​i
 +
  
 === ... with an AVR ISP Programmer ==== === ... with an AVR ISP Programmer ====
  
 For setting the fuse bits one has to type: For setting the fuse bits one has to type:
-  $ sudo avrdude -p m328p -c stk500v2 -P /​dev/​ttyACM0 -U lfuse:​w:​0xFF:​m -U hfuse:​w:​0xDE:​m -U efuse:w:0x05:m+  $ sudo avrdude -p m328p -c stk500v2 -P /​dev/​ttyACM0 -U lfuse:​w:​0xFF:​m -U hfuse:​w:​0xDE:​m -U efuse:w:0xFD:m
 And for the bootloader: And for the bootloader:
   $ sudo avrdude -p m328p -c stk500v2 -P /​dev/​ttyACM0 -U flash:​w:​optiboot_atmega328.hex:​i   $ sudo avrdude -p m328p -c stk500v2 -P /​dev/​ttyACM0 -U flash:​w:​optiboot_atmega328.hex:​i
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 If one has a [[avr_bootloader:​paper-avrisp_mk2|Paper-AVRISP mkII]] one hast to type in the terminal the following. For setting the fuse bits: If one has a [[avr_bootloader:​paper-avrisp_mk2|Paper-AVRISP mkII]] one hast to type in the terminal the following. For setting the fuse bits:
-  $ sudo avrdude -p m328p -c avrispmkII -P usb -U lfuse:​w:​0xFF:​m -U hfuse:​w:​0xDE:​m -U efuse:w:0x05:m+  $ sudo avrdude -p m328p -c avrispmkII -P usb -U lfuse:​w:​0xFF:​m -U hfuse:​w:​0xDE:​m -U efuse:w:0xFD:m
 And for the actual bootloader: And for the actual bootloader:
   $ sudo avrdude -p m328p -c avrispmkII -P usb -U flash:​w:​optiboot_atmega328.hex:​i   $ sudo avrdude -p m328p -c avrispmkII -P usb -U flash:​w:​optiboot_atmega328.hex:​i