RFM12B library - lowpowerlab

hello. 'm Trying RFM12 library from lowpowerlab. Send three RGB numbers using sprintf function. But I do not know how these three numbers convert back from text char to numbers .

Please help me

https://github.com/LowPowerLab/RFM12B

This sounds like a C issue, not a library issue, look up atoi(). http://forum.arduino.cc/index.php/topic,117267.0.html