LongAP One teardown

[shawaj]

LongAP One miner

Main board looks like it's this one from PC engines API 2E0 - https://www.pcengines.ch/apu2e0.htm

• AMD processor (apu2e0 = 2 i211AT LAN / AMD GX-412TC CPU (stripped down board) GE412TIYJ44JB / 2 GB DRAM)
• ram 2gb
• Nfuse USB sx1308 concentrator lrwcc8-mpcie-868 (not sure why there is a little bit of blue plastic hanging out of connector? Possibly to remove connection on some pins?)
• Intel WiFi
• Removable 6 pin ECC on gpio
• Button and 3 LEDs
• SSD over msata (labelled 30gb)
• Seems to also have an RTC as there is a coin cell battery
• buzzer
• has two Ethernet ports (one marked as "MGMT") and a RS232 console port
• 12v DC power jack (forgot to check the amp rating)

[shawaj]

Chip PDF g-series-soc-product-brief.pdf

https://www.cpu-world.com/CPUs/Puma/AMD-G-Series%20GX-412TC.html

[shawaj]

This is the unit https://status.longap.com/5AE9B8

https://explorer.helium.com/hotspots/115JXsPGpmB9BNtCAwEQR1cPreDUrgpgrKGym4eLcVebw8CMoub

[shawaj]

GPIO stuff

https://github.com/pcengines/apu_gpio_lib

https://pcengines.ch/howto.htm#gpio

[shawaj]

Manual LongAP-One-Manual-v1.0.pdf

[shawaj]

Looks like all LEDs are green... The manual above shows the functionality.

[shawaj]

@MuratUrsavas I wonder if this bit of blue tape sticking out is something to do with what you mentioned and needing to stop those signals....

[MuratUrsavas]

@MuratUrsavas I wonder if this bit of blue tape sticking out is something to do with what you mentioned and needing to stop those signals....

@shawaj That's very probable. In the concentrator design those pins are for SX1261 and should be not connected to the mPCIe pins. Looks like they somehow have them connected and got a quick solution for that :smile:

[shawaj]

Datasheet of concentrator they are using... lrwcc3-mpcie-datasheet (1).pdf

https://www.n-fuse.co/de/devices/SX1303-LoRaWAN-Concentrator-Card-mini-PCIe.html

EDIT: this is the correct one sorry...

https://www.n-fuse.co/devices/LoRaWAN-Concentrator-Card-mini-PCIe.html

lrwccx-mpcie-datasheet.pdf

[MuratUrsavas]

Looks like they have also wired SWD lines of the STM32 MCU to the mPCIe interface. Might create additional conflict points according to the design and used base hardware (PCI lane count)

[shawaj]

Yeah we aren't using that one so pinout will not be the same as that. But just thought it was interesting in any case

[MuratUrsavas]

And it's not a reliable way to interfere the signals :smile: