hey Guys,
at first , i has no unix skill 😉
i try to connect my printer serial without usb. i use a mks robin e3p
(https://github.com/makerbase-mks/MKS-Robin-E3P/blob/master/Hardware/MKS Robin E3P V2.0_001/MKS Robin E3P V2.0_001 PIN.pdf)
i would use the serial connection on the "WiFi" Port. On Orange Pi i has tryed S0 to S3 (S1 - S3 enabled at "armbian-config").
"ls /dev/serial/" are empty and i get no connection. is it generally not possible or i forget some essential?
i hope someone knwo what i mean 😛
Edit
for my opinion i plug it right
<a href="https://ibb.co/FD5x2sH"><img src="https://i.ibb.co/FD5x2sH/1648588063171.jpg" alt="1648588063171" border="0"></a>
<a href="https://ibb.co/843VSHR"><img src="https://i.ibb.co/843VSHR/1648588063163.jpg" alt="1648588063163" border="0"></a>