02-16-2020, 12:59 PM
/proc/ioports is empty on the Raspberry Pi too (at least in Raspbian) - I don't know if this is a kernel config thing, and ARM-specific behaviour or what.
When I was poking around /sys and /proc yesterday in pine-pinephone-20200210-phosh.img.xz I found some of the info in the pmOS wiki wasn't quite right, notably the iio devices were numbered differently. I don't know if that's a kernel change, a detection order thing or what. I also couldn't find the flash LED anywhere.
GPS is on the modem, accessed via ttyUSB serial devices. It's controlled by AT commands through /dev/ttyUSB2 (and possibly 3?) while /dev/ttyUSB1 is read-only, sending the NMEA content you've configured via the AT commands. Search for "EC25&EC21 GNSS AT Commands Manual" for the full command set.
When I was poking around /sys and /proc yesterday in pine-pinephone-20200210-phosh.img.xz I found some of the info in the pmOS wiki wasn't quite right, notably the iio devices were numbered differently. I don't know if that's a kernel change, a detection order thing or what. I also couldn't find the flash LED anywhere.
GPS is on the modem, accessed via ttyUSB serial devices. It's controlled by AT commands through /dev/ttyUSB2 (and possibly 3?) while /dev/ttyUSB1 is read-only, sending the NMEA content you've configured via the AT commands. Search for "EC25&EC21 GNSS AT Commands Manual" for the full command set.
