Hi again,
I have not used serial to control the BBB, but use SSH over
usbnet. Besides, I did not connect the external power to pin 3,
but the dedicated power plug seat (The black one with a "5V"
sticker).
Cheers,
Persmule
在 2017年03月21日 20:22, Albin 写道:
Hi again,
Oh, I see, you connect it to 3 on the BBB itself -- of course.
Will I need to use the usb peripheral to supply more power btw? I
couldn't make that work but the serial connection does.
Cheers,
Albin
2017-03-21 12:59 skrev Persmule:
Dear Albin,
You should only power your BBB with an external 5V power
supplier, and
connect its usb peripheral port to your controlling computer. I
have
never used any ATX power supplier for this, just the
configuration I
just described is enough.
Best regards,
Persmule
在 2017年03月21日 18:55, Albin 写道:
Dear Persmule,
First, thank you for your work on free software. I'm following
your
guide[1] to replace Bios on my Thinkpad X220 with a
neutralized
coreboot using a BBB rev. C and an ATX power supply for the
v3.3
pin, but flashrom is unable to recognize the chip. Did you
have any
problems recognizing the chip on your device and do you have
any
ideas of what to try?
"image" at #coreboot suggested that I should connect the power
cable
to the machine instead of using an external power supply but I
haven't read anywhere that this should work or even be safe.
My current setup worked for reflashing a macbook2,1 but not
for this
x220.
Again, any advice would be highly appreciated.
Best,
Albin
1.
https://hardenedlinux.github.io/firmware/2016/11/17/neutralize_ME_firmware_on_sandybridge_and_ivybridge.html
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