For communication is using FTDI USB Serial Port

Commands that follow are intended for communication with the device: 
* c|R|G|B - sets the color
* p|p1|p2 - pwm 0-1023 light intensity
* i - text info about version ex. pcmm v13
* I - numeric version ex. 13
* g - returns the current time 1/10000 sec
* s - flashing start
* P - pause (stops timer)
* S - end of pause (starts timer)
* t - stops flashing
* m - receives flash time
* n - receives turn off time
* M - returns the number of free bytes in cache memory for glasses
* N - returns the number of free bytes in cache memory for glasses
* r - reset
* u1836 - unlock
* L - lock
* b - startBootloader
* w - startADC(1)
* W - startADC(0)
* x - isADVCC5V = false;
* X - isADVCC5V = true;
* k|l1|l2 - sets the duration of flash