NRF52, Is there CRC on the ACK payload whilst using Gazell?

[spoologa]

Hello,

I'm trying to implement the Gazell protocol for one of my tasks. I understand there is CRC for the data sent from the device to the host. I cannot however find anywhere that explicitly states that there is a CRC for the ACK payload from the host to the device. Is there a CRC for the ACK payload?

Does the packet structure /transmission order remain the same between the initial payload and the ACK payload? 

What about if I'm using the ESB protocol instead? 

Thanks

SP

[AndreasF]

Hi SP.

There is a CRC for every packet, and the packet structure remains the same. (note: The ACK is sent after a normal packet is received)

There shouldn't be any difference in ESB, as Gazell is only a top layer.

- Andreas