Promiscuous listen for nRF24L01+

RE: Promiscuous listen for nRF24L01+

Hung Bui — Wed, 28 Dec 2016 09:28:35 GMT

@Dave: Yes, it's a very good solution. I don't see any problem with that.

RE: Promiscuous listen for nRF24L01+

Dave Retz — Tue, 27 Dec 2016 16:10:16 GMT

Hi Hung,

Thanks for your comments. I think what this means is that a device can receive from anyone by using a "global" receive address, while it can also receive on a specific address by using its own address.

For example, if the "global" address were a number like 0xFF, and stations were number 1, 2, and 3, each station would set its PRX to be 0xFF and 1, 2, or 3. Pipe 0 would be using PRX 0xFF, and Pipe 1 would be using the PRX of its station address. That would allow each station to receive from either Pipe - meaning either a "broadcast" to 0xFF, or a directed packet to 1,2, or 3.

There appears to be one slight problem of discovering who the sender is upon receiving a packet. However, this could be solved by using a header byte inside of the payload. That actually would be a satisfactory solution.

Does the above make sense conceptually?

Dave

RE: Promiscuous listen for nRF24L01+

Hung Bui — Tue, 27 Dec 2016 15:38:31 GMT

Hi Dretz,

I don't really understand your requirement.

Why would the receiver PRX need to know about the transmitter PTX in advance ??

PRX listens to any packet that arrive with the address matches with its own RX addresses (up to 6).

So more than 1 PTX can transmit data to one PRX address (one pipe) with no problem. Of course there will be collision if they transmit at the same time, but if they have different retransmission delays, it should be fine.