sprintf() causing huge current consumption

[Dinesh]

Hi,

Greetings!

I am using nRF52832 with SDK 16.0.0 and mesh sdk 4.0.0.

Application: light switch client with LPN features added

In one of application, I have to use float variables and for converting them to string, I have used sprintf().

However it is observed that if we use sprintf() then module's current consumption is 3mA and if we don't use it then it is 10uA.

Please help me to resolve this issue.

Regards,

Dinesh

[Turbo J]

Possible cause: FPU exception flag set, which keeps the MCU core from entering sleep state.

If you use nrf_pwr_mgmt then check that NRF_PWR_MGMT_CONFIG_FPU_SUPPORT_ENABLED is set to "1" in sdk_config.h

Otherwise you might want to clear FPU exception flags yourself just before sleeping.

[Dinesh]

Hi Turbo J,

Thanks for your reply.

I helped to me solve problem.

Thank you.

Regards,

Dinesh