Problems with transmiting data with RS422/RS485

Technical Support
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1

Hi, all.

The RS422/485 port(X55) didn’t work on the Apalis Evaluation Board V1.1C.

The iMX8 can receive data from PC through the RS422/485 port, but can’t tansmit data to PC.

My jumpers setting:

JP7 CLOSED.

JP5, JP8 CLOSED.

JP6, JP9 OPEN.

JP11 CLOSED.

With jumper JP11 opened, the RS232 upper port on X28 works fine.

Is any problem with the RS422/485 port on X55?

Any ideas please tell me.

Thanks!

2

Hi @xavier . do you enable RS485 feature in device tree?

1 Like
3

@benjamin.tx It works after enable RS485 feature. Thanks!