Actually it IS a HAT and would fully meet the HAT spec if the EEPROM was programmed.DougieLawson wrote: ↑Thu May 17, 2018 4:36 pmhttp://rasp.io/prohat/
That's not a HAT. It's just a simple way to get a small breadboard connected to your RPi.
So it's an out-of-spec HAT.
Indeed, but only in software. It can easily be brought into spec. by pulling GPIO26 LOW and flashing the EEPROM.
And that is the answer for the OP. Because it needs no special device tree configuration you simply can't tell that it is connected because the eeprom is an unwritten lump.alexeames wrote: ↑Sat May 19, 2018 8:39 amBut the bottom line is that very few people think it matters (proven by the fact that only 2 people have ever asked me about it - including this thread). With a board as simple as the Pro Hat there is little gained by programming the EEPROM as no pre-configuration is necessary, since it's a completely blank canvas.
I would suggest the EEPROM should be programmed with default data which identifies it as a HAT which doesn't configure any GPIO.
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