arduino_st4.h

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/*******************************************************************************
  Copyright(c) 2018 Jasem Mutlaq. All rights reserved.
 
  Arduino ST4 Driver.
 
  For this project: https://github.com/kevinferrare/arduino-st4
 
  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 2 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 Library General Public License
  along with this library; see the file COPYING.LIB.  If not, write to
  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  Boston, MA 02110-1301, USA.
 
  The full GNU General Public License is included in this distribution in the
  file called LICENSE.
*******************************************************************************/
 
#pragma once
 
#include "defaultdevice.h"
#include "indiguiderinterface.h"
#include <stdint.h>
 
namespace Connection
{
class Serial;
}
 
class ArduinoST4 : public INDI::DefaultDevice, public INDI::GuiderInterface
{
    public:
        ArduinoST4();
 
        typedef enum { ARD_N, ARD_S, ARD_W, ARD_E } ARDUINO_DIRECTION;
 
        virtual bool initProperties() override;
        virtual bool updateProperties() override;
 
        virtual bool ISNewNumber(const char *dev, const char *name, double values[], char *names[], int n) override ;
 
        void guideTimeout(ARDUINO_DIRECTION direction);
 
    protected:
        const char *getDefaultName() override;
 
        virtual bool Disconnect() override;
        virtual IPState GuideNorth(uint32_t ms) override;
        virtual IPState GuideSouth(uint32_t ms) override;
        virtual IPState GuideEast(uint32_t ms) override;
        virtual IPState GuideWest(uint32_t ms) override;
 
        // Helper functions
        static void guideTimeoutHelperN(void *p);
        static void guideTimeoutHelperS(void *p);
        static void guideTimeoutHelperW(void *p);
        static void guideTimeoutHelperE(void *p);
 
    private:
        bool Handshake();
        bool sendCommand(const char *cmd);
 
        int GuideNSTID { -1 };
        int GuideWETID { -1 };
        ARDUINO_DIRECTION guideDirection;
 
        int PortFD { -1 };
 
        Connection::Serial *serialConnection { nullptr };
 
        const uint8_t ARDUINO_TIMEOUT = 3;
};