src/main/io/spektrum_rssi.h

   1 /*
   2  * This file is part of Cleanflight and Betaflight.
   3  *
   4  * Cleanflight and Betaflight are free software. You can redistribute
   5  * this software and/or modify this software under the terms of the
   6  * GNU General Public License as published by the Free Software
   7  * Foundation, either version 3 of the License, or (at your option)
   8  * any later version.
   9  *
  10  * Cleanflight and Betaflight are distributed in the hope that they
  11  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  12  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  13  * See the GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this software.
  17  *
  18  * If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 // Spektrum RSSI signal strength range, in dBm
  22 #define SPEKTRUM_RSSI_MAX         (-42)
  23 #define SPEKTRUM_RSSI_MIN         (-92)
  24
  25 // Spektrum RSSI reported value limit at or below which signals a fade instead of a real RSSI
  26 #define SPEKTRUM_RSSI_FADE_LIMIT (-100)
  27
  28 #define SPEKTRUM_MAX_FADE_PER_SEC       40
  29 #define SPEKTRUM_FADE_REPORTS_PER_SEC   2
  30
  31 typedef struct dbm_table_s
  32 {
  33     int8_t  dBm;
  34     uint8_t reportAs;
  35 } dbm_table_t;
  36
  37
  38 void spektrumHandleRSSI(volatile uint8_t spekFrame[]);