KuaiquPowerSupply.h

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* libscopehal                                                                                                          *
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#ifndef KuaiquPowerSupply_h
#define KuaiquPowerSupply_h
 
class KuaiquPowerSupply
    : public virtual SCPIPowerSupply
    , public virtual SCPIInstrument
{
public:
    KuaiquPowerSupply(SCPITransport* transport);
    virtual ~KuaiquPowerSupply();
 
    //Device information
    virtual uint32_t GetInstrumentTypesForChannel(size_t i) const override;
 
    //Device capabilities
    virtual bool SupportsIndividualOutputSwitching() override;
    virtual bool SupportsVoltageCurrentControl(int chan) override;
 
    //Read sensors
    virtual double GetPowerVoltageActual(int chan) override;    //actual voltage after current limiting
    virtual double GetPowerVoltageNominal(int chan) override;   //set point
    virtual double GetPowerCurrentActual(int chan) override;    //actual current drawn by the load
    virtual double GetPowerCurrentNominal(int chan) override;   //current limit
    virtual bool GetPowerChannelActive(int chan) override;
 
    //Configuration
    virtual void SetPowerVoltage(int chan, double volts) override;
    virtual void SetPowerCurrent(int chan, double amps) override;
    virtual void SetPowerChannelActive(int chan, bool on) override;
    virtual bool IsPowerConstantCurrent(int chan) override;
 
protected:
    enum Command : char {
        COMMAND_WRITE_VOLTAGE= '1',
        COMMAND_READ_VOLTAGE = '2',
        COMMAND_WRITE_CURRENT= '3',
        COMMAND_READ_CURRENT = '4',
        COMMAND_KEYPAD_ECHO  = '5',
        COMMAND_FIRMWARE     = '6',
        COMMAND_ON           = '7', // No reply to off command
        COMMAND_OFF          = '8', // No reply to on command
        COMMAND_LOCK         = '9',
        COMMAND_LOCK_ON,
        COMMAND_LOCK_OFF
    };
    // Make sure several request don't collide before we received the corresponding response
    std::recursive_mutex m_transportMutex;
    // Rate limiting as per documentation : 3.5 bytes at 9600 bauds = 3.5 * 1.04ms = 3.64ms => 4 ms
    std::chrono::milliseconds m_rateLimitingInterval = std::chrono::milliseconds(4);
    std::chrono::system_clock::time_point m_nextCommandReady = std::chrono::system_clock::now();
 
 
    bool SendWriteValueCommand(Command command, double value);
    double SendReadValueCommand(Command command);
    std::string SendSimpleCommand(Command command);
    std::string SendCommand(Command command, std::string commandString);
 
    // PSU state
    bool m_on = false;
    double m_current = 0;
    double m_voltage = 0;
    bool m_constantCurrent = false;
 
public:
    static std::string GetDriverNameInternal();
    POWER_INITPROC(KuaiquPowerSupply);
};
 
#endif