openwifi-hw

[spwaghmare24]

I am currently working with the openwifi-hw-img on the ADRV9361 platform and have encountered a specific requirement related to GPIO signaling.

As per the current setup, I have observed that:

GPIO P2.48 toggles at the beginning of a transmission burst.
GPIO P2.46 always high.

I verified this using both SMA cables and two antennas at each end. However, I am now aiming to implement a single-antenna, half-duplex setup at both ends of the link using an RF switch. For this, I need a GPIO signal that remains high during the entire TX burst and stays low otherwise—essentially indicating the transmission period.
This GPIO signal would allow me to control the RF switch and alternate between TX and RX using a single antenna.
Could you please advise:

Whether such a GPIO signal is already available or configurable within OpenWiFi?
If not, would it be possible to implement this functionality with minimal changes?

2) However, I am now transitioning to the ANTSDR-E200 board and aiming to use a single antenna at each end via an RF switch to enable half-duplex operation. For this purpose, I need a GPIO on the ANTSDR-E200 that goes high during the entire transmission period and stays low otherwise (i.e., during reception and idle periods). This GPIO will control the RF switch to alternate between transmit and receive modes using a single antenna.

Could you please advise:

Whether such a GPIO signal is already available or configurable within the OpenWiFi hardware design?
If not, could you guide me on how to modify the ANTSDR-E200 design to implement this half-duplex capability?

I appreciate your support and look forward to your guidance.