@yurikleb, software serial is not supported on the Particle due to the interrupt overhead it uses. However, the photon already has an extra hardware serial port (Serial1) on the TX/RX pins and the Electron has three more! I believe someone already has done some work on this module on the forum:
Nonetheless, it would be easy to port the library. I finally received my units recently so I'll look into porting this week.
