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bigtreetech / CB1

OS System image for CB1
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RPI CM4 board. CB1 can't start #105

Open Regressor opened 1 year ago

Regressor commented 1 year ago

Hi. I have a working custom RPI CM4 board. CB1 module (v2.2) after power on eats 120ma from 5V bus and it looks like it can't start. RX/TX shows nothing, hdmi/ethernet nothing. I tried to set usb boot jumper and connect usb cable (usb id connected to input usb 5V bus using 5.1/5.1 divider) and there is no usb activity at all.

"pon" test point shows 1.01V, "res" testpoint shows 1.8V, "irq" testpoint shows 0V. Input power testpoint shows 5.1V

Also I measured pins 88/90 voltage and get 1.8V. Pins 84/86 shows 3.3V. "3V3" testpoint shows 3.3V

Is there any way to get it working or find out a problem?

My motherboard uses almost all contacts from rpi cm4 module (4 x i2c buses, spi with two slaves, second sdcard, eth 1G, pci, usb) but with CB1 I just want to get ethernet, hdmi and usb

docman11 commented 1 year ago

I have same problem with BTT PI4B with CB1. After flashing microsd with image - I can boot only 1 time, and works good. But after shut down or reboot - stay off and eats 110mA.... Only formatting microsd and flash image again help to start it again for 1 time..... Now I don't even understand - it's hardware or software problem in CB1..... not solved, wrote to BTT service... waiting for answer...

Abyss8 commented 1 year ago

I have problem to connect browser and putty, and when i go to wifi settings on Pad 7 it freezes. Changed SD card and do a fresh install, when i click someting in putty i need to wait a long to response and while installing something from kiauh it freezes.