PowerDeliveryBoardSoftware

Building and deploy

Compile

To compile the firmware run:

cmake . && make

To compile the tests run the same commands in the test directory

How to flash to firmware

This assumes that an AVRISP mk2 is used, if you use a different programmer change the -c flag.

avrdude -p m2560 -B 10 -c avrisp2 -U flash:w:PowerDeliveryBoardSoftware.hex:i

Fuses

The fuses select the "Ext. Crystal Osc.; Frequency 8.0- MHz; Start-up time: 16K CK + 4.1 ms; [CKSEL=1111 SUT=10]" clock, disables the clock divider, enables the preserve eeprom flag, enables the watchdog timer, enables SPI and disables JTAG and OCD. The brownout detection level is set to 1.8V.

Fusebyte	Value
Low	0xEF
High	0xC1
Extended	0xFE

How to flash the fuses

avrdude -p m2560 -B 10 -c avrisp2 -U lfuse:w:0xef:m -U hfuse:w:0xc1:m -U efuse:w:0xfe:m

LEDs

Under normal use all leds should be either on or blinking. By inverting most states one can be sure that all leds are working.

If only a single led is off for a longer time, there is a some kind of problem.

LED-Number	Meaning
0	Alive (blinks regularly)
1	Not Watchdog
2	Not Brownout
3	I²C for VCC OK
4	I²C for 5V OK
5	VCC (Voltage and Current) OK
6	5V (Voltage and Current) OK
7	Unused

Package format (Transmitter ID 74)

The package is a 8 bit, 4 Channel Package with the following data:

Command	Response
0	Voltage VCC in mV / 128
1	Current VCC in mA / 256
2	Voltage 5V in mV / 32
3	Current 5V in mA / 64