Using UART3_TXD (GPIO5[27]) as an GPIO

[adde_ado]

Hi,

I'm using i.MX 8M Mini Processor.

I cannot use UART3_TXD (GPIO5[27]) as an GPIO.

What could be the problem?

Best regards,

Adde

[josephzhou1]

see

[igorpadykov · Accepted solution]

Hi Adde

reason may be that it is used by other driver/application. One can try to set manually

using jtag debugger or memtool

https://source.codeaurora.org/external/imx/imx-test/tree/test/memtool?h=lf-5.10.72_2.2.0

Another reason may be that chip is broken, probably due to ESD or overheating.

Best regards
igor

[adde_ado]

Hi Igor,

Thanks for your previous answer.

What about this post?

https://community.nxp.com/t5/i-MX-Processors/Using-UART3-TXD-GPIO3-24-as-an-GPIO/m-p/375613

Could it be the same problem I am experiencing?

Best regards,

Adde

[igorpadykov]

>What about this post?

that post talks about UART3_TXD which is connected to external part

and that part(configured as output) drives UART3_TXD.

Best regards
igor