562     char   cmd = CMD_QUIT;  in gps_state_done()  local
564     write( s->control[0], &cmd, 1 );  in gps_state_done()
580     char  cmd = CMD_START;  in gps_state_start()  local
583     do { ret=write( s->control[0], &cmd, 1 ); }  in gps_state_start()
595     char  cmd = CMD_STOP;  in gps_state_stop()  local
598     do { ret=write( s->control[0], &cmd, 1 ); }  in gps_state_stop()
680                     char  cmd = 255;  in gps_state_thread()  local
684                         ret = read( fd, &cmd, 1 );  in gps_state_thread()
687                     if (cmd == CMD_QUIT) {  in gps_state_thread()
691                     else if (cmd == CMD_START) {  in gps_state_thread()
698                     else if (cmd == CMD_STOP) {  in gps_state_thread()