Detailed information at https://tbspace.de/solarcampi.html
BOM (PCB-RevC):
https://tbspace.de/content/downloads/ibom_solarcampi_revc.html
Firmware (PCB-RevB/RevC):
https://github.com/Manawyrm/SolarCamPi/tree/master/firmware
Schematic (PCB-RevC):
https://github.com/Manawyrm/SolarCamPi/blob/master/pcb/solarcampi.pdf
Raspberry Pi can flash the AVR, using avrdude with LinuxSPI support and inverted GPIO 17 as reset.
avrdude.conf configuration entry:
programmer
id = "linuxspi";
desc = "Use Linux SPI device in /dev/spidev*";
type = "linuxspi";
reset = ~ 17;
baudrate = 40000;
;
avrdude Usage to flash firmware:
avrdude -p m328p -P /dev/spidev0.0 -c linuxspi -U flash:w:firmware.hex
avrdude Usage to set fuses:
avrdude -p m328p -P /dev/spidev0.0 -c linuxspi -U lfuse:w:0xe2:m -U hfuse:w:0xd9:m -U efuse:w:0xfd:m
