Hi there,

 

i need some help with using the UART1 pins 8 & 9. I own a Duo with Ubuntu 16.04.6

I've installed a software that is able to send codes over the UART1 pins to my smart home system. The software is 'active (running)' but has no connection via UART1.

 

UART1 is enabled(npi-config) but i does not work. WiringNP is required for my software and installed.

 

Is there any point i've missed? 

Did i have to switch UART1 pins to in- and output?

 

One error i get:

Service Control Manager on computer xx.x.x.xx cannot be opened. You may not have permission to do this.

 

PS: These pins must work, i rebuild another thing that's works fine! Software configs are the same, that is not the problem.

 

 

Edited February 15, 20206 yr by hYtas

1 hour ago, hYtas said:

I own a Duo with Ubuntu 16.04.6

 

1 hour ago, hYtas said:

npi-config

 

This forum provides support for Armbian (on Duo and others). Welcome to check it. Also we have different/better way of handling hardware and I/O:

 

https://github.com/sgjava/userspaceio

2 hours ago, hYtas said:

UART1 pins 8 & 9.

Not from what we can see on schematic, those are SPI1 pins, UART1 pins are 10 & 11.

http://wiki.friendlyarm.com/wiki/images/8/8a/Schematic_NanoPi_Duo-v1.1.pdf

 

UART1 is specified in this diagram. Enable it in armbian-config, install userspaceio and look at https://github.com/sgjava/userspaceio/blob/master/c-periphery/python/src/serialtest.py