ardupilot/libraries/SITL/SIM_RF_Lanbao.cpp

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/*
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
Simulator for the Lanbao rangefinder
*/
#include "SIM_RF_Lanbao.h"
#include <GCS_MAVLink/GCS.h>
#include <stdio.h>
using namespace SITL;
uint32_t RF_Lanbao::packet_for_alt(uint16_t alt_cm, uint8_t *buffer, uint8_t buflen)
{
buffer[0] = 0xA5;
buffer[1] = 0x5A;
buffer[2] = (alt_cm * 10) >> 8;
buffer[3] = (alt_cm * 10) & 0xff;
const uint16_t crc = calc_crc_modbus(buffer, 4);
buffer[4] = crc & 0xff;
buffer[5] = crc >> 8;
return 6;
}