For the new batches of WP7607-1 using FW 13.1, the application cannot control the gpio pin associated with the DCD signal. The App uses the literal gpio pin “DCD”. On older WP7607 chips using FW prior to 13.1 the “DCD” gpio can be exported, configured as out direction and really controls the DCD sig…

WP7607-1 App cannot control DCD signal

jyijyi August 5, 2022, 9:21am 2

the UART1 DCD signal cannot be controlled by default.
you need to download the yocto source and make those pin to be GPIO and then rebuild the yocto image:

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WP7607-1 App cannot control DCD signal

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