about PPI

[lmouelo]

I studied the ppi register but I have some questions?

Can we synchronize more than 2 peripherals?
Fork registers can trigger a second task from a task simultaneously? and if so
can this second stain be applied to another peripheral?

thank's 

[haakonsh]

You can connect any peripherals EVENTs to any peripheral's TASK with the exception of the radio where it will break the SoftDevice if its running. This means that you can create whole state machines with just peripherals and PPI.

Have fun exploring what you can do with it and tell us if you figure out something cool :P

[lmouelo]

it's nrf52840 sdl15.0 and peripheral define a nordic card. A

nd i want to synchronize the timer  of several  peripheral card sorry for my english 

it's really possible to do this with ppi register ? 

[lmouelo]

i want to synchronize just with ble protocol, without radio protocol? if it's practicable

[lmouelo]

if I use this tutorial will the transmission be affected?

[haakonsh]

The blog post describes how to use the SoftDevice with the Timeslot API in order to use a propriatary 2.4GHz protocol to synchronize nordic devices, whilst being able to service BLE connections. We do not have a solution for time synchronization over BLE yet, but we will with future versions of the BLE spec. 

[lmouelo]

ok i will to use this blog to synchronize my diferents  devices peripehasl   thank you , but  the  data transmission between ble_central and ble_peripheral  are affected or no ? 

[Lurn_Z]

Hi haakonsh,

I have a similar problem: I have 1 PRX and 2 PTX, and I want to synchronize the timer of the 3 devices via ESB.

haakonsh said:

https://devzone.nordicsemi.com/b/blog/posts/wireless-timer-synchronization-among-nrf5-devices?CommentId=e60f395c-99e5-497e-bf2d-8157c2748248 

But the link is lost, can you give me a hand?

Best regards,

Lurn

[haakonsh]

Hey Lurn,

You need to open a new ticket for your issue.

BR,

Håkon.