Hi,

 

I trying to use UART 1 & UART 2 at OPi Zero 2 Plus with no success with armbian stable and ubuntu server. I test all combinations, of fex settings, turn off everything 

except required uarts, set uart_type = 2 and etc, and it did not connect. UART0 and UART3 works fine, but I need cts-rts lines from uart2 for hi speed (it's uart_type = 4, but I would like to start regular uart first).

tested with picocom, ft232 & pl2303

I use 8 & 10 pins for uart 1 and 11&13 for uart2 as described at http://linux-sunxi.org/Orange_Pi_Zero  

Is it correct pins?

 

Thanks

OPiZero and OPiZeroPlus2 are not the same, therefore schematics are not the same and UART2 header pins neither...

http://linux-sunxi.org/Xunlong_Orange_Pi_Zero_Plus_2

UART1 is not exposed on header since it is connected to BlueTooth.

UART2 : TX=10, RX=12, CTS=15, RTS=22.

 

wow! thanks! 

but how do you know that? Where I can find full set of headers of Zero 2 plus?

 

5 minutes ago, geocut said:

Where I can find full set of headers of Zero 2 plus?

In the schematics: https://linux-sunxi.org/File:ORANGE_PI-ZERO-PLUS2_V1_0.pdf

found it at Ext Port and CPU pages. Thanks.