NRF52 BLE UART + Proximity

Question

Hi, 
 I am using NRF52832 to read the sensor data (BMI160 accelerometer sensor) by using I2C. 
 I try to send the sensor data to mobile by using BLE_UART. upto this i finished now. I need is. 
 1.calculate the BATTERY level without using ADC. is there any register used to read the battery? 
 2. need to know the paired device distance. or proximity?

Sunil vignesh · Accepted Answer

Hi bjorn, 
 i got the SAADC values by connecting the P0.02 pin to VDD. if the voltage drop occur this adc value becomes drop. is this correct one or any thing to be change. 
 
 if the method that i done is correct. for hardware protection we need add any resistance or any internal protection circuit is there for the pin.?

Siddharth rana · Answer

Hello Sunil. 
 If u face problem with connection peer failed . 
 Then reload the softdevice program with full chip erase and I guess it will solve the problem

Siddharth rana · Answer

Hello Sunil 
 Regarding the battery voltage measurement u can implement saadc periperperl . 
 The default config have 1/6 ratio with 0.6 internal reference and 10bit resolution.Follow the reference manual for equation for calculation. 
 Further u can Implement voltage to percentile conversation with proximity example. 
 Hope this helps you

Sunil vignesh · Answer

Hi Siddharth, 
 Now i stuck with calculating Battery Voltage Measurement do you have any example or similar code?

NRF52 BLE UART + Proximity

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