Short intro to start your HiKey with serial console

Is this the correct configuration ?

Welcome to minicom 2.7

OPTI±----------------------------------------------------------------------+
Comp> A - Serial Device : /dev/ttyUSB1 |
Port> B - Lockfile Location : /var/lock |
> C - Callin Program : |
Pres> D - Callout Program : |
> E - Bps/Par/Bits : 115200 8N1 |
> F - Hardware Flow Control : No |
> G - Software Flow Control : No |
> >
> Change which setting? |
±----------------------------------------------------------------------+
> Screen and keyboard |
> Save setup as dfl |
> Save setup as… |
> Exit |
±-------------------------+

Yes, this looks ok (assuming you know from your dmesg traces that /dev/ttyUSB1
is your UART adapter).

But I get the to same screen like in the above post. Am I doing anything wrong?

No idea, I’m not sure what you expect to happen (aren’t you trying to
unbrick your board? it so right now it might not be saying anything).
At the moment all we are trying to do is confirm you have minicom setup
correctly.

The diagnostic that is suggested is that you watch the TX light
whilst you also press keys on the keyboard. The TX light will only
light up for a very short time when the key first goes down (it
does not say on if you hold the key down… although it might start
flashing when keyboard auto-repeat happens).

You have not yet replied to say what happens when you press keys on the
keyboard (e.g. sending keystrokes to minicom) whilst watching the TX
light. So far you have only said that it is off by default (which is
expected).

When I press something I cannot see the lights . but when I use a different application like picocom (a similar application like minicom ) I can see the lights on the TX LED as you have suggested.

I’m trying to install Linux on the board and I’m trying to see the boot process or the error messages on the serial console.

Here is the link of the issue which I have been working

When I press something I cannot see the lights . but when I use a
different application like picocom (a similar application like
minicom) I can see the lights on the TX LED as you have suggested.

Ok, great. Actually I use picocom for everything too… much easier
to launch from scripts.

I’m trying to install Linux on the board and I’m trying to see the
boot process or the error messages on the serial console.

The problem with “nothing happens” is that we can’t tell where nothing
is happening. However with your setup now showing the TX LED correctly
we can be pretty confident that the UART is setup correctly and if you
see nothing it’s because the hikey960 sent nothing.

Doesn’t sound like much, but it matters!

Here is the link of the issue which I have been working:
Installing Linux on Hikey960

Looking like the UART side of things is working now, so I’m gla
to hear this is sorted, and I’ll leave you with @Loic for the Linux
stuff. Have fun!

Thank you for the help regarding the UART side. :slight_smile: