src/main/rx/crsf.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 #pragma once
  22
  23 #include "rx/crsf_protocol.h"
  24
  25
  26 #define CRSF_PORT_OPTIONS       (SERIAL_STOPBITS_1 | SERIAL_PARITY_NO)
  27 #define CRSF_PORT_MODE          MODE_RXTX
  28
  29 #define CRSF_MAX_CHANNEL        16
  30
  31 #define CRSF_RSSI_MIN (-130)
  32 #define CRSF_RSSI_MAX 0
  33 #define CRSF_SNR_MIN (-30)
  34 #define CRSF_SNR_MAX 20
  35
  36 typedef struct crsfFrameDef_s {
  37     uint8_t deviceAddress;
  38     uint8_t frameLength;
  39     uint8_t type;
  40     uint8_t payload[CRSF_PAYLOAD_SIZE_MAX + 1]; // +1 for CRC at end of payload
  41 } crsfFrameDef_t;
  42
  43 typedef union crsfFrame_u {
  44     uint8_t bytes[CRSF_FRAME_SIZE_MAX];
  45     crsfFrameDef_t frame;
  46 } crsfFrame_t;
  47
  48 void crsfRxWriteTelemetryData(const void *data, int len);
  49 void crsfRxSendTelemetryData(void);
  50
  51 struct rxConfig_s;
  52 struct rxRuntimeState_s;
  53 bool crsfRxInit(const struct rxConfig_s *initialRxConfig, struct rxRuntimeState_s *rxRuntimeState);
  54 bool crsfRxIsActive(void);