RADIO_REGISTER_SIZE
&radio->usb_buf[regnr * RADIO_REGISTER_SIZE + 1]);
regnr * RADIO_REGISTER_SIZE + 1]);
#define REGISTER_REPORT_SIZE (RADIO_REGISTER_SIZE + 1)
#define ENTIRE_REPORT_SIZE (RADIO_REGISTER_NUM * RADIO_REGISTER_SIZE + 1)
#define RDS_REPORT_SIZE (RDS_REGISTER_NUM * RADIO_REGISTER_SIZE + 1)