Hi,
I want to use the nRF53 with the timesync demo (https://github.com/nordic-auko/nRF5-ble-timesync-demo) to start an I2S task when a timer overflows on the net core. Since the I2S DPPI is on the appcore, I don't think I'm able to route the I2S start task to the netcore timer. I've considered using a GPIOTE task that toggles on the netcore timer overflow (with forwarding) to trigger a GPIOTE event on the appcore, and then have that event trigger the I2S start. I can do this if I route the GPIO pins with an external wire. I'm wondering if:
1) Can I somehow route/connect GPIO pins (one used by the netcore, one used by the appcore) internally? I don't think I can use the same pin for GPIOTE on each core.
2) If this isn't an option, what is the best way to trigger a DPPI task on the appcore from an event on the netcore with the lowest latency possible?
