A nRF5340 module unexpected power consumption as BLE non-connectable broadcaster

RE: A nRF5340 module unexpected power consumption as BLE non-connectable broadcaster

valioiv — Fri, 07 Jul 2023 13:59:16 GMT

Thanks for confirmation, case closed!

RE: A nRF5340 module unexpected power consumption as BLE non-connectable broadcaster

Bendik Heiskel — Fri, 07 Jul 2023 13:13:30 GMT

Hi,

Great to hear that you managed to lower the current consumption. When this config is enabled the QSPI peripheral is enabled causing the increased current consumption.

Best regards,

Bendik

RE: A nRF5340 module unexpected power consumption as BLE non-connectable broadcaster

valioiv — Fri, 07 Jul 2023 11:07:59 GMT

Hi again! Just wanted to share I've just resolved (workaround) the issue!

I saw in the Kconfig there is an option called "Device Drivers -> Flash Hardware Support" (probably forgot to strip this down while was removing UART/console functionalities). Just removed the tick, rebuild the code, flashed the standalone Fanstel BT40 module and voila - I see consumption of 734 microamps, which is awesome!!!

Would be glad to read an explanation why removing it gives so much power gain having in mind I don't have any QSPI/Flash interactions in my code...