ardupilot/libraries/AP_GPS/AP_GPS_GSOF.h

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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/>.
*/
//
// Trimble GPS driver for ArduPilot.
// Code by Michael Oborne
// https://receiverhelp.trimble.com/oem-gnss/index.html#Welcome.html?TocPath=_____1
#pragma once
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#include "AP_GPS.h"
#include "GPS_Backend.h"
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#if AP_GPS_GSOF_ENABLED
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class AP_GPS_GSOF : public AP_GPS_Backend
{
public:
AP_GPS_GSOF(AP_GPS &_gps, AP_GPS::GPS_State &_state, AP_HAL::UARTDriver *_port);
AP_GPS::GPS_Status highest_supported_status(void) override WARN_IF_UNUSED {
return AP_GPS::GPS_OK_FIX_3D_RTK_FIXED;
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}
// Methods
bool read() override WARN_IF_UNUSED;
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const char *name() const override { return "GSOF"; }
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private:
bool parse(const uint8_t temp) WARN_IF_UNUSED;
bool process_message() WARN_IF_UNUSED;
void requestBaud(const uint8_t portindex);
void requestGSOF(const uint8_t messagetype, const uint8_t portindex);
double SwapDouble(const uint8_t* src, const uint32_t pos) const WARN_IF_UNUSED;
float SwapFloat(const uint8_t* src, const uint32_t pos) const WARN_IF_UNUSED;
uint32_t SwapUint32(const uint8_t* src, const uint32_t pos) const WARN_IF_UNUSED;
uint16_t SwapUint16(const uint8_t* src, const uint32_t pos) const WARN_IF_UNUSED;
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struct Msg_Parser
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{
enum class State
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{
STARTTX = 0,
STATUS,
PACKETTYPE,
LENGTH,
DATA,
CHECKSUM,
ENDTX
};
State state;
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uint8_t status;
uint8_t packettype;
uint8_t length;
uint8_t data[256];
uint8_t checksum;
uint8_t endtx;
uint16_t read;
uint8_t checksumcalc;
} msg;
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static const uint8_t STX = 0x02;
static const uint8_t ETX = 0x03;
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uint8_t packetcount;
uint32_t gsofmsg_time;
uint8_t gsofmsgreq_index;
const uint8_t gsofmsgreq[5] = {1,2,8,9,12};
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};
#endif