Hello,
I am developing a device using nRF52832. This device transmits data every 100ms, but periodically transmits data every 5ms.
The BLE connection is functioning well with a connection interval of 7.5ms to 7.5ms, but to adhere to the Apple Accessory Design Guidelines I see it needs to meet the requirements:
- Interval Min ≥ 15 ms
- Interval Min is a multiple of 15 ms.
- One of the following:
- Interval Max at least 15 ms greater than Interval Min.
- Interval Max and Interval Min are both 15 ms.
If we don't meet these requirements the BLE connection drops after 90 seconds. I have tried to use a connection interval of 15ms to 30ms, but this causes some BLE issues when transmitting data quickly (every 5ms).
I am exploring what's causing the BLE issues, and while I think fixing that is the correct solution, I would like to explore other options to see if I am missing anything easier or more obvious. I have tried to use the correct connection interval (15ms to 30ms), but reduce the connection interval (7.5ms to 7.5ms) during fast transmission. This was OK, but it takes a few seconds to update the connection interval, which is too slow.
Any other ideas? How does Apple intend for it to work?
Thanks in advance,
Campbell
