Hi, I'm new to the Armbian/Alt PI scene, coming from a RPI Zero W.

 

I'm needing to interact with my PI using a CH340G (is it compatible) USB to TTL dongle. I've also trjed a CH351A device, put it into UART mode.

 

Unfortunately, I get nothing from the PI. Despite using the primary RX/TX pins. I've also tried enabling all of the UART pins using armbian-config, and using another set of pins - to no avail.

 

Please view my setup below. I've run out of ideas of where I'm going wrong.

 

I've tried these images:

Armbian_5.90_Nanopineo2_Debian_buster_next_4.19.57
Armbian_5.90_Orangepione_Ubuntu_bionic_next_4.19.57

 

Reference: http://linux-sunxi.org/File:Orange_Pi_One_UART.jpg

Edited July 8, 20197 yr by Turbine

You set speed to 153200. Ofc it can't work.

2 hours ago, Igor said:

You set speed to 153200. Ofc it can't work.

@Turbine set the speed inside puTTY also to 115200 like in the hardware-properties of windows for the usb-dongle

AND you did make a small beginners failure
You have connected RX to RX (Orange <-> Orange) and TX to TX (Green <-> Green).

Normally you have to connect crossover:

RX to TX and

TX to RX but

GND <-> GND

 

46 minutes ago, guidol said:

@Turbine set the speed inside puTTY also to 115200 like in the hardware-properties of windows for the usb-dongle

AND you did make a small beginners failure
You have connected RX to RX (Orange <-> Orange) and TX to TX (Green <-> Green).

Normally you have to connect crossover:

RX to TX and

TX to RX but

GND <-> GND

 

Thank you. It works now that I've connected TX <-> RX & RX <-> TX.

 

That's incredibly embarrassing. None of the SOC guides I followed mentioned which pins to link.

6 minutes ago, Turbine said:

Thank you. It works now that I've connected TX <-> RX & RX <-> TX.

That's incredibly embarrassing. None of the SOC guides I followed mentioned which pins to link.

we got "own" armbian guide with that mentioned:

 

but also other guides I found do mentioned it:
https://www.sigmdel.ca/michel/ha/opi/OPiZ_uart_en.html

https://www.instructables.com/id/Setup-Orange-Pi-Using-Serial-Port/

https://lucsmall.com/2017/01/19/beginners-guide-to-the-orange-pi-zero/