How to send a command to multi peripherals in us level time via BLE

[laumung]

Hi there, I am developing a multi peripherals to central BLE system based on NRF52840. Now I am consider the synchronization between the peripherals and centrals. How can I send a command or data from central to each peripherals in very short time, such as 10us. I tried to send data from central to peripherals via NUS but there was 40ms delay between the command to the different peripherals. Is there any service to send data to multi peripherals in 10 or 20us? Any help will be appreciated. 

[Einar Thorsrud]

Hi,

You cannot get that high accuracy with BLE. If you use nRF devices on all ends there are other possibilities, though, which could be worth considering. See Wireless timer synchronization among nRF5 devices.