Get list of connected devices

[drtrigon]

I found https://github.com/gioblu/PJON/blob/master/documentation/addressing.md#dynamic-addressing and am wondering whether I can use bus.check_slaves_presence(); also on a bus with fixed ids? Does it work on LUDP also? A quick try resulted in error like:

../../../../../../libraries/PJON/src/PJONMaster.h:62:30: error: expected type-specifier before ‘SoftwareBitBang’
template

Would automatic listing of device ids for fixed ids be possible?

[gioblu]

Ciao @drtrigon the listing of available devices with static addressing is a feature that should be added on top and is not provided by the PJON class, primarily not to affect memory footprint. How this should be implemented depends on the limitations of the data-link or the set of data-links used (if master-slave request-response based or multi-master cyclic broadcast request-response based).

[drtrigon]

Does that mean the dynamic addressing (or parts of it) can not be (re)used for this?

[gioblu]

Yes absolutely, you could implement on top whatever system is required for you to reach your goal, and yes you could also be inspired by the dynamic addressing implementation.

[drtrigon]

I will have a look at this, thanks! My naive first approach would be to use e.g. PJON_BROADCAST as mentioned in https://github.com/gioblu/PJON/blob/master/documentation/data-transmission.md and #40.

[drtrigon]

Is it possible to have all devices answer to broadcasted message? In a way that the answers do not collide?

[mxbranson]

All devices will receive broadcast messages.
Stick your message processing code in your receiver function and look for packet_info.receiver_id to check if its a zero.
You can also use ports to specify different message types and decode the payload based on the packets port.