Radio 2.4GHz LENGTH Field

RE: Radio 2.4GHz LENGTH Field

ovrebekk — Fri, 01 Feb 2019 07:42:34 GMT

You can set STATIC_PACKET_LENGTH to 0 and only use the LENGTH field, that is correct.

The LENGTH field can be between 0 and 8 bits in size, as configured through the LFLEN field.

Obviously the maximum length of the packet is lower if you have a shorter LENGTH field.

Back to your question about S0 and S1 these are optional header bits/bytes that will be added before and after the LENGTH field. As an example the BLE stack will use these fields to form the standard BLE packet header.

Best regards
Torbjørn

RE: Radio 2.4GHz LENGTH Field

Sash — Fri, 01 Feb 2019 04:26:08 GMT

Thanks for your fast reply. Can i use only LENGTH field for packet transfer by using register directly? If it so then how many bits i can use with LENGTH field.

RE: Radio 2.4GHz LENGTH Field

ovrebekk — Thu, 31 Jan 2019 14:56:40 GMT

STATIC_PACKET_LENGTH is mainly used for protocols that don't support dynamic packet length (meaning the size of the LENGTH field is 0). Essentially the total packet length is the value of LENGTH + STATIC_PACKET_LENGTH, so if you know that all your packets will have a minimum size > 0 you can configure this in the STATIC_PACKET_LENGTH, and only use the LENGTH field to add additional payload bytes.

Is there any particular reason you want to access the radio registers directly?

Unless you have very particular requirements I would suggest using one of our existing RF protocol implementations, such as BLE or ESB. Then you don't have to spend a lot of time on the low level radio protocol implementation.

Best regards
Torbjørn