Use the below settings to get the FriendlyArm to talk to the Radio Dongle from the Chronos kit. (thanks to Steven Lockhart for confirming these settings)



#include <termios.h>

struct termios settings;
FILE * dongle;
dongle = fopen("/dev/ttyACM0", "r+");

//settings.c_cflag = BAUD | CRTSCTS | DATABITS | STOPBITS | PARITYON | PARITY | CLOCAL (const) | CREAD (const) ;
settings.c_cflag = B115200 | CRTSCTS | CS8      | 0        | 0        | 0      | CLOCAL         | CREAD;
settings.c_iflag = IGNPAR;
   settings.c_oflag = 0;
   settings.c_lflag = 0;       //ICANON;
   settings.c_cc[VMIN]=1;   // timeout = 1s
   settings.c_cc[VTIME]=0;
   tcflush(fileno(dongle), TCIFLUSH);
tcsetattr(fileno(dongle), TCSANOW, &settings);
//ready to send crap\



//Keep in mind that you need to send your bytes as a string that represents the bytes.