i.MX ProcessorsのトピックRe: Using UART3_TXD (GPIO5[27]) as an GPIO

Using UART3_TXD (GPIO5[27]) as an GPIO

adde_ado — Fri, 14 Jan 2022 21:35:21 GMT

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

igorpadykov — Fri, 14 Jan 2022 23:35:38 GMT

Hi Adde

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

using jtag debugger or memtool

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

Best regards
igor

adde_ado — Sat, 15 Jan 2022 07:40:51 GMT

Hi Igor,

Thanks for your previous answer.

What about this post?

Could it be the same problem I am experiencing?

Best regards,

Adde

igorpadykov — Sat, 15 Jan 2022 08:17:09 GMT

>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

josephzhou1 — Sat, 15 Jan 2022 13:59:53 GMT

see