howto configure gateway

Once you completed your west build , your image is located under the build directory

$ cd ~/work/pinetime/zephyr/build/zephyr
here you can find zephyr.bin which you can flash

I use an orange pi single board computer.
The pinetime watch is attached to this.
My development is done on a laptop.

How can you copy from one environment (laptop) to another (SBC) without typing password?

On the laptop :

ssh-keygen -b 8092 -t rsa -C "fota gw access key" -f ~/.ssh/orange
Generating public/private rsa key pair.
Enter passphrase (empty for no passphrase):          (LEAVE EMPTY!)
Enter same passphrase again:
Your identification has been saved in /root/.ssh/orange.
Your public key has been saved in /root/.ssh/orange.pub.
The key fingerprint is:
SHA256:xCM5Fk1LAVjEWqrM6LKM8Y6+Y12ONt6eV8vDa/KdRUM fota gw access key
The key's randomart image is:
+---[RSA 8092]----+
|     ==++.       |
|B*B.o+. +ooo     |
+----[SHA256]-----+

(the standard port is 22 and not 9988 which is my custom port)

copy the certificate to the SBC (which name is orange in my case):
ssh-copy-id -p 9988 -i ~/.ssh/orange.pub root@orange


create config file :  ~/.ssh/config
      Host orange
      HostName orange
      User root
      Port 9988
      IdentityFile ~/.ssh/orange

Now you can copy without a password :
scp build/zephyr/zephyr.bin orange:/usr/src