Timer synchronization between nRF52832 with STM32

[Skyliu]

I want two STM32 timers synchronization via BLE . Used two nRF52832DKs  download the timersync demo :https://github.com/nordic-auko/nRF5-ble-timesync-demo, 

the nRF52832DKs  timers are synchronous. But how to Synchronize STM32 and NRF timers.

[Hung Bui]

Hi Skyliu, 

Since the nRF52 and the STM32 can be connected via a wire. You can use that to synchronize the timer. For example when the GPIO pin is toggled the Timer should be reset to 0. It's deterministic number of cycle of latency from the time you trigger the toggle, until the interrupt is received on the other side (STM32).