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UART2 not working in Diva module

Kiran G
Prodigy 120 points

Hi,

We have a custom board with diva SOM . OS is linux. 

The application requires UART (UART2). But we are unable to communicate with any device connected to the UART2.  I think /dev/ttyO2 is the file abstraction for this. When we do "echo test > /dev/ttyO2"  we are not getting anything on the other side.

Is there any extra pinmuxing required to make UART2 communicate with outside?

Regards,

Kiran G

  • 0
    TI__Guru**** 393215 points

    Hi Kiran,

    This SOM is a third-party product. We don't have access to the SOM schematics, therefore we can't say from which processor pins the UART2 signal have been routed out. There are quite a lot of possibilities, as you can see from Table 4-56 in the AN335X Datasheet Rev. G.