Hi.
On the adapter board for the RPi Compute Module, there are three USB-C ports.
1- Can any of them be used to power the board? (because there is also a batter connector)
2- Is there a display output? If so, which one?
Thanks!
https://opensourceleg.discourse.group/t/wi-fi-on-the-interface-board/36/2
1- If your adapter board is same as this one probably the J2 type-c port is for power supply in. If you track the XT connector pins you can see it is connected to a tantalum capacitor 227C placed at C9. J2 connector if i am not mistaken goes to same capacitor to regulate power.
So you could use J2 and XT connector to power up the board but if sensors or other things that draw more power than type-c could supply then you will have instability so depending on board design they might used XT power supply as external supply for those sensors but i doubt it it is the case for this one cause sensor probably will not draw that much power so you are fine with using only J2 i suppose.
2- I don’t think you can use type-c ports for display output. You can only use DSI and HDMI ports on the CM5 to actually get an output for display but if they connect those traces together somehow you could use it but it is a very low chance of this is the case.
What you can do is actually try to plug it to a display each type-c port so you could test if you get any image or not. Due to type-c power controllers you cannot damage your monitor or adapter board in normal cases. You could also try to plug power cable to those 3 type-c ports but only one of them will actually work and other 2 ones is for usb data so it will not get power at all to card so again in normal cases you probably will be fine even if you plug it to wrong type-c port.
If this does not solve your problem please provide back and front of the adapter board so even without schematics maybe we could see traces to identify whether or not it is correct port for power supply in or display output.
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