WIZ750SR-485 can't see the message in the AT mode

[irinakim12]

WIZ750SR-485 uses 2-Wire method among RS-485 wiring methods. That's why you only need to activate the port when sending data. Because this part was missing, the transmission of the command could not be performed.

After adding the code, I found that it works normally as shown below.

[irinakim12]

WIZ750SRv133_#24_issue_APP_firmware.zip