Original date: 2022-09-07

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TL;DR it's awesome! I'm so happy!

So I received the new X1000 SoM from JLCPCB. Surprisingly, the quality is good enough. They got everything right, including the 0201 passive components, 1612 crystals, XDFN-4 LDOs, and the 0.8mm BGA X1000. Nice.

And then, I can't wait to test if it works, so I used the jumper wires exactly like last time (lol). Smoke test passed, USB bootloader recognized, and firmware flashing works. Good. So then I built a new kernel image with the RTC clock workaround code removed. And... and !! The suspend-to-RAM FINALLY WORKS!!!! I used a USB multimeter to measure the power consumption, and it's ONLY 0.003W!!!! This means the X1000 itself can standby for more than a month on a 1000mAh Li-ion battery!!

Did you ever noticed that I actually soldered all SPI flashes upside down? It's embarrassing bruh ,-,