the difference between the drivers_nrf and libraries ? GPIO input interrupt !

[Tizana]

hi,

1/ i notice that drivers header files are available in two versions. one inside "components\drivers_nrf" folder and the other inside "components\libraries".

and when i check some code example sometimes i find that the example use the drivers_nrf and sometimes libraries.

for example for the timer some code uses the "app_timer.h" and some other use the "nrf_drv_timer.h". i can't figure out what is better to use and what is the difference between them?

2/ and i have another question. i use the code example of the 'BLE Characteristics, a beginner's tutorial' available here : github.com/.../master

i want to add a new function that allows me to trigger an interrupt on input PIN each time a signal input change from 0 to 1. i don't know how to start and where can i found a good code example in order to use it in my main code.

Thanks,

[Susheel Nuguru]

nrf drivers are hal layers that access the the hardware registers directly. There is limited things that you can do with the drivers. Libraries use drivers and can make more complex state machines. If you care about the software overhead, memory then using drivers is better options. If you have memory to spare and if you are not worried about the software overhead added by libraries on top of drivers, then you can have more tools/options to play around with them.