esb rx with multiple tx devices.

RE: esb rx with multiple tx devices.

Kenneth — Wed, 10 Apr 2024 09:14:18 GMT

Please refer to the ESB documentation for the development environment you are using, for instance:
https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.1.0/esb_users_guide.html
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.6.0/nrf/protocols/esb/index.html

[quote user="carefree"]

2. If the above question is true, then it means that I must know the amount of PRX in advance. Right?

So if I can't determine the access device for PRX in advance, what can I do?

[/quote]

The PRX can support up to 8 pipes, so you can then have up to 8 PTX devices. The PRX may use ack payload to send back information to the PTX which pipe it should use for further communication.

Kenneth

RE: esb rx with multiple tx devices.

carefree — Wed, 10 Apr 2024 08:01:09 GMT

Thank you very much. I understand what you mean. I have a few last questions.

1. Is the esb_set_prefixes function setting the same address as "pipe" in the esb payload?

In previous programs, I did not pay attention to this address, and I did not do any additional processing for the "pipe" in the esb payload, either PTX or PRX.

2. If the above question is true, then it means that I must know the amount of PRX in advance. Right?

So if I can't determine the access device for PRX in advance, what can I do?

Thanks！

RE: esb rx with multiple tx devices.

Kenneth — Wed, 10 Apr 2024 07:11:31 GMT

Hello,

It's not a good idea to have several PTX that send data to the same PRX using the same address, the problem is that since all devices share address and use ack, you can end up in a situation that a PTX will interpret the packet from another PTX as the ACK for it's previously sent packet. So, ideally you can use a shared address the first packet, but then switch to one of the available "pipes" that the PRX have, so you ensure that normally every PTX use their own address.

Kenneth