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[[DuPAL optiboot flash output|Sample output]] | [[DuPAL optiboot flash output|Sample output]] | ||
Originally I tried using BP Microsystems but didn't work. I then flashed using avrdude / header and worked (green LED blinking). | Originally I tried using BP Microsystems but didn't work (fuses not set right?). I then flashed using avrdude / header and worked (green LED blinking). | ||
TODO: dump end flash so can program using bp | TODO: dump end flash so can program using bp | ||
Revision as of 06:26, 21 May 2022
WIP
Pre-compiled: https://proghq.org/media/dupal/
Building
Optiboot
# https://github.com/Optiboot/optiboot # 328P uses 115200? # a few use 57600 but not the one we need :( # wget https://github.com/Optiboot/optiboot/releases/download/v8.0/Optiboot-8.0.zip git clone https://github.com/Optiboot/optiboot.git cd optiboot git checkout -b v8.0 v8.0 cd bootloaders/optiboot make atmega328 AVR_FREQ=20000000L LED_START_FLASHES=8 BAUD_RATE=57600 # sha1sum optiboot_atmega328.hex # 8a16ce8d98d7bf002c54c7aa911bfd124d9e1961 optiboot_atmega328.hex
Flash optiboot. Example CLI to use ISP header, but can also put into tl866 etc
Sample command line:
avrdude -c dragon_isp -P usb \ -p atmega328p -e -u -U efuse:w:0xFD:m -U hfuse:w:0xDE:m \ -U lfuse:w:0xFF:m -U flash:w:optiboot_atmega328.hex
Originally I tried using BP Microsystems but didn't work (fuses not set right?). I then flashed using avrdude / header and worked (green LED blinking).
TODO: dump end flash so can program using bp
cd DuPAL_Firmware make make program