How to increase ability to transmit data successfully when using ESB and TIMESLOT

[Giang]

Hi all, I have 2 module NRF52832.

Module 1: I using BLE and ESB at the same time, so I request timeslot for ESB, mode RX

Module 2 : I not use BLE, so I can't request timeslot. So, I only use ESB mode TX

Now, I config timeslot as : 

length_us = 10000

timeout_us = 50000

When I send message via ESB fail, I retry send again 5 time. If still fail, I remove message

But I press 50 time, I fail 3,4 message. So, I want increase % success . Please show me how to calculate params of timeslot for this.

Thank you !!!

[Kenneth]

Hello,

If the application is requesting a time slot of 10ms, and there is an BLE event starting in for instance 9ms, then that means the timeslot will not occur until after (9ms+BLE event). This may be considerably time, so a better solution may be to request small timeslots.

For instance if the application request a timeslot of 5ms, and there is an BLE event starting in for instance 9ms, then there will be enough to have the timeslot before the BLE event.

Best regards,
Kenneth

[Giang]

I only need increase % send data success, all params of timeslot can modify. So Can you show me the proven good parameters ?

[Kenneth]

My suggestion was to try smaller timeslots, for instance:

length_us = 3000

timeout_us = 50000

I also recommend to add some pin toggling when packet is lost, this will check if the packet loss occur at every BLE event.