add battery status in advertisement packet

[rushin]

hello there i want to add battery status in my advertisement packet.is adc required for battery level? can you give me links for adding battery status in advertisement packet.

[xtting]

static __INLINE uint8_t battery_level_in_percent(const uint16_t mvolts)

You can find this function in SDK-10. I don't know when this function support began.