SimulatedFPGA.h

/*
 * This file is part of LSST M1M3 support system package.
 *
 * Developed for the Vera C. Rubin Telescope and Site System.
 * This product includes software developed by the LSST Project
 * (https://www.lsst.org).
 * See the COPYRIGHT file at the top-level directory of this distribution
 * for details of code ownership.
 *
 * 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 <https://www.gnu.org/licenses/>.
 */
 
#ifndef LSST_M1M3_SS_FPGA_SIMULATEDFPGA_H_
#define LSST_M1M3_SS_FPGA_SIMULATEDFPGA_H_
 
#include <chrono>
#include <mutex>
#include <queue>
#include <thread>
 
#include <SAL_MTM1M3C.h>
#include <SAL_MTMount.h>
#include <SAL_MTMountC.h>
 
#include <HardpointActuatorSettings.h>
#include <IFPGA.h>
#include <ILCSubnetData.h>
 
namespace LSST {
namespace M1M3 {
namespace SS {

class SimulatedFPGA : public IFPGA {
public:
    SimulatedFPGA();
 
    ~SimulatedFPGA();
 
    void initialize() override;
    void open() override;
    void close() override;
    void finalize() override;
 
    void waitForOuterLoopClock(uint32_t) override;
    void ackOuterLoopClock() override;
 
    void waitForPPS(uint32_t) override;
    void ackPPS() override;
 
    void waitForModbusIRQs(uint32_t, uint32_t) override;
    void ackModbusIRQs() override;
 
    void pullTelemetry() override;
    void pullHealthAndStatus() override;
 
    void writeCommandFIFO(uint16_t *data, size_t length, uint32_t timeoutInMs) override;
    void writeRequestFIFO(uint16_t *data, size_t length, uint32_t timeoutInMs) override;
    void writeTimestampFIFO(uint64_t timestamp) override;
    void readU8ResponseFIFO(uint8_t *data, size_t length, uint32_t timeoutInMs) override;
    void readU16ResponseFIFO(uint16_t *data, size_t length, uint32_t timeoutInMs) override;
 
    void waitOnIrqs(uint32_t irqs, uint32_t timeout, bool &timedout, uint32_t *triggered = NULL) override {
        timedout = false;
    }
    void ackIrqs(uint32_t irqs) override {}
    uint32_t getIrq(uint8_t bus) override { return 0; }
 
    void writeHealthAndStatusFIFO(uint16_t request, uint16_t param = 0) override;
    void readHealthAndStatusFIFO(uint64_t *data, size_t length, uint32_t timeoutInMs = 10) override;
 
    void readRawAccelerometerFIFO(uint64_t *raw, size_t samples) override;
 
private:
    std::thread _monitorMountElevationThread;
    std::mutex _elevationReadWriteLock;
    SAL_MTMount _mgrMTMount;
 
    MTM1M3_hardpointActuatorDataC *_hardpointActuatorData;
    HardpointActuatorSettings *_hardpointActuatorSettings;
 
    int _lastRequest;
    std::queue<uint16_t> _u8Response;
    std::queue<uint16_t> _u16Response;
    std::queue<uint16_t> _subnetAResponse;
    std::queue<uint16_t> _subnetBResponse;
    std::queue<uint16_t> _subnetCResponse;
    std::queue<uint16_t> _subnetDResponse;
    std::queue<uint16_t> _subnetEResponse;
 
    std::queue<uint16_t> _crcVector;
    void _writeModbus(std::queue<uint16_t> *response, uint16_t data);
    void _writeModbus16(std::queue<uint16_t> *reponse, int16_t data);
    void _writeModbus32(std::queue<uint16_t> *reponse, int32_t data);
    void _writeModbusFloat(std::queue<uint16_t> *response, float data);
    void _writeModbusCRC(std::queue<uint16_t> *response);
    void _writeHP_ILCStatus(std::queue<uint16_t> *response, int index);
 
    void _monitorElevation(void);
 
    float _mountElevation = 90.;
    std::chrono::steady_clock::time_point _mountElevationValidTo;
    bool _simulatingToHorizon;
    bool _mountSimulatedMovementFirstPass = true;
 
    bool _exitThread = false;
 
    bool _sendResponse;
 
    // simulates properly clock signal
    std::chrono::time_point<std::chrono::steady_clock> _nextClock;
 
    // simulates pressure raising after air valve is opened
    std::chrono::time_point<std::chrono::steady_clock> _lastAirOpen;
 
    float _getAirPressure();
 
    uint64_t _error_counter;
};

double getRndPM1();
 
} /* namespace SS */
} /* namespace M1M3 */
} /* namespace LSST */
 
#endif /* LSST_M1M3_SS_FPGA_SIMULATEDFPGA_H_ */