where i will get API definition and their function for BLE blinky .

[virigo]

hii, 

i want the API defintion and their function for BLE blinky program 

[awneil]

You already know where all the Nordic documentation is:

 https://devzone.nordicsemi.com/f/nordic-q-a/39738/hi-i-am-beginner-for-nrf52832-i-need-a-example-program-for-transfering-the-data-i2c-program-using-sensor/154046#154046

https://devzone.nordicsemi.com/f/nordic-q-a/39748/i-couldn-t-able-to-understand-the-nrf-twi-sensor-program/154752#154752

[virigo]

in that i couldn't find everything . only few is present 

[awneil]

Go on - be specific; what are you missing?