Gazell - transmit 10 bytes in under 2ms

[ImQ009]

Is this even possible? I have a BLE connection with an interval of 7.5 ms. I've set up a radio notification with a distance of 2680us in order to be able to transmit 4 BLE packets. When the notification happens I request a timeslot with the length of 2200us. Now, is it possible to receive 10 bytes with Gazell in such a short time? I wasn't really able to go lower than 3.6ms with the following settings:

Payload size: 10 bytes

Channels: 23, 55, 78

Timeslot period: 600us

Timeslots per channel (in sync): 2

Timeslots per channel (out of sync): default

Sync lifetime: 10

Retransmission attempts: default

Data rate: 2Mbit

Thank you in advance

[Hung Bui]

@lmQ009: In out-of-sync mode, the host remain in one channel for at least 2 timeslot before it's switch to the next one.

This explain why it worked for you when you have 3.6ms = 600us x 2 x 3.

Even with 2 channels you would have trouble with 2.2ms (2.4ms needed). I would suggest you to change the timeslot to 550us and use 2 channels.

[ImQ009]

Yes, after thinking about it I'll propably just use a single channel and implement a different kind of hopping myself. Also, it appears a timeslot of 510us also works well, which is great. And no, there's no reason for me to stick with Gazell. In fact I might use the radio directly.

Thank you for your assistance, it was very helpful