We are using BLE and QSPI at the same time and want to have maximum RF range. Sensor data is collected, encoded, and written into flash via QSPI. This goes on for a few minutes.
It sounds like errata: "[133] QSPI: Degraded radio performance with QSPI” could cause a significant RF range reduction. Are there any additional specifics that can be shared about that degradation?
Some follow up questions:
1) If we use SPIM instead of QSPI does that completely eliminate that issue?
2) If we use QSPI at 8 MHz and/or lower drive strength would that eliminate the issue?
Any other thoughts on minimizing BLE degradation while using an external flash chip?
Our hardware is in pre-production and cannot be changed at this point.
Both chips are running at 3V.
The QSPI clock rate is set to 80 MHz in the dts currently.
We aren't explicitly setting the drive strengths currently, so I assume they are set to the default for NCS 2.6.0.