how to measure the coin cell battey voltage in real

[MARTIN FR]

Hello Everyone,

I am trying to measure the (3v)battery voltage by having proximity example as reference but intially it is showing 100percent later it is going to 13(percent) voltage approxmiatelry (after 120seconds) i dont understand why it is happening like this can anyone suggest me some possible ways to measure out by using multimeter how much voltage available on ADC pin ? so that i can able to make some idea about the battery level measurement§?

[Einar Thorsrud]

The proximity example in SDK 11 uses a app timer to measure the battery level. The first measurement is not performed until the first time it times out, and the timeout is 120 second (thus measurements are performed every 120 seconds). You can modify BATTERY_LEVEL_MEAS_INTERVAL and set it to a lower value in order to measure more often. You can also do the first measurement at startup, rather than waiting the full measurement interval before doing the first measurement.

Also, if you are not using the DK you may have to change the value of DIODE_FWD_VOLT_DROP_MILLIVOLTS to reflect your hardware.

[MARTIN FR]

is there is any possible way to debug and see the voltage availble on the ADC pin i have tried with the printf statements and see the output value of (adc_sample) it is showing 11758 i dont understand what is the value of that ? how can i make sure that the real time battery vtolage my aim is to send the battery percent value to the MCP terminla but it reamins always 100 and i try to modify the nattery measinterval value to 1200 and i have checked it is showing 10percent in the Mcp So its hardly cofusing for me