NsAtn

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To get console access via UART on Akai devices you have to proceed like on the pictures below :

{{http://dnttalo.cluster029.hosting.ovh.net/Pictures/Uart/AKF_UART.png}}


On my AKF i have 6 pins, sometimes on MPC there is less pins. 
Use an USB/TTL converter to avoid damage on your board.
You can use this one as on the photo : 
[[https://www.amazon.fr/QIQIAZI-UART-TTL-Adaptateur-convertisseur-compatible/dp/B0DBHM62GM/|USB-TTL Converter]]

Connect like this :

- GND from Akf to GND on usb stick 
(you can measure gnd when running with a voltmeter), if you have 0v between measuring point and the gnd, there is a big change that the measuring point is a gnd. 
 

- Rx from Akf to Tx on usb stick 

- Tx from Akf to Rx on usb stick  

**/!\ Do not connect Pins 5v or 3.3v**


Connect USB dongle to your computer. 
Connect USB type B on force to the same computer ( if you dont do this, you can have inconsistent messages when sending commands or receiving messages in the console application). 

Then when its done, download putty and run it. 
In session choose Serial and adjust Com1 port to the port used by your USB/TTL converter. 
On my side its often COM6, COM4 or  COM7. 
Change speed on 115200, and click Open. 
I wrong port has been chosen you will have an error message.
Otherwise you'll have black screen. 

Then power on your force and Uboot prompt & start will appear.

Let linux boot then you will see login prompt (force login:), waiting for you to login. 

If you have already a firwmare with ssh enabled, you can log like this on your device.
Otherwise if you dont have the login, you'll have to go into uboot console. 

To do this and just after booting your device, there is a quick message allowing you to interrupt boot process. 


{{http://dnttalo.cluster029.hosting.ovh.net/Pictures/Uart/AKF_Uboot.jpg}}

So to interrupt, press space or another key few times in your putty ( console apps ) 
Then you'll be on uboot prompt ( => ) .

There you can type help to get list of all commands but be careful of what you do. 
 
To log into linux, as we don't have password, we are going to change it by mounting the rootfs partition and then we run passwd to change password. 

  


<code>
# Under uboot, print current bootargs , UUID will be different so use the one you have. 

$>printenv bootargs
$>bootargs=root=PARTUUID=1c5755ae-899e-475b-821b-636c4825550c rootwait ro console=ttyS2,115200 rfkill.default_state=0

# We add "single init=/bin/sh'" to the end of the booting args with command below : 
$>setenv bootargs 'root=PARTUUID=1c5755ae-899e-475b-821b-636c4825550c rootwait ro console=ttyS2,115200 rfkill.default_state=0 single init=/bin/sh'

# Print again to check everything is fine : 
$>printenv bootargs

# Then boot 
$>boot

#Remount rootfs / with read write rights : 
$>mount -rw -o remount /

#Change password, type what you want 
$>passwd root

#Reboot
$>reboot -f
</code>

and Voila, you have a console access to your device.