FPU Power Consumption

[Lorenzo]

Hi everybody,

I'm using nRF52832 on a custom board mounting a BME680 sensor.

I'm running a third party library for the usage of the sensor (namely BSEC Library), and it uses floating point calculations.

I'm experiencing a ∼6 mA power consumption only when dealing with floating point calculations. I've read and tried some solutions on FPU handling on this forum but they're quite old (3 years ago) and with some broken links, long story short: none of them worked for me.

Any suggestion/workaround to suggest?

Thank you and best regards

Gino

[awneil]

That's Bosch, isn't it?

I've not used that one, but for some others, their low-level driver doesn't require FP.
Or they might have some non-FP code in app notes?

But I am also interested in the FPU question ...

[Lorenzo]

Hi awneil, yeah that's from Bosch, however it needs to be used together with their BSEC Library (coming as a binary blob where I cannot do much) to get some special functions such as IAQ calculation.