How to communicated with android ril daemon directly

I want to communicate with android RIL daemon with my daemon directly.

Could you tell me how to do it without using telephony layer.

Bes开发者_运维问答t regards.

First of all you shouldn't! Let the Android framework handle ril, or you may put the daemon in some undefined state.

With that disclaimer, you need to look into

./frameworks/base/telephony/java/com/android/internal/telephony/gsm 
./frameworks/base/telephony/java/android/telephony/gsm

For specifics. The actual commands are be passed through the rild socket, so you will also need to run as root or belong to the radio group to get access.