My custom board with a NRF5340 (MDBT53-1M) with LF crystal is running as a central on NCS 2.6.1.
It's connecting to a legacy device which has a BLE121LR.
- NRF5340 centrals connects to BLE121LR.
- NRF5340 pairs via legacy OOB.
- NRF5340 subscribes to characteristics.
- NRF5340 changes connection parameters which make the BLE121LR send a message at a interval larger than 6 seconds.
- No notifications from BLE121LR is received.
- NRF5340 reports connection has timed out.
I have tried a few combinations of interval and slave latency and I was still unable to get past 6 second.
Setting CONFIG_CLOCK_CONTROL_NRF_K32SRC_500PPM did not fix it.
I have connected my custom board to a NRF5340-DK running as a peripheral and the connection parameters worked.
How can I workout what is causing this?
I have a nRF52840 dongle is that helps.
//Works
{
.interval_min = 400,
.interval_max = 400,
.latency = 11,
.timeout = 3200
}
//Works
{
.interval_min = 80,
.interval_max = 80,
.latency = 59,
.timeout = 3200
}
//Timeout
{
.interval_min = 400,
.interval_max = 400,
.latency = 12,
.timeout = 3200
}
//Timeout
{
.interval_min = 80,
.interval_max = 80,
.latency = 69,
.timeout = 3200
}
