Added new go based Mk2 Interface

mk2if/mk2interface.go

@@ -0,0 +1,58 @@
+package mk2if
+
+const (
+	LED_TEMPERATURE = 128
+	LED_LOW_BATTERY = 64
+	LED_OVERLOAD    = 32
+	LED_INVERTER    = 16
+	LED_FLOAT       = 8
+	LED_BULK        = 4
+	LED_ABSORPTION  = 2
+	LED_MAIN        = 1
+)
+
+var LedNames = map[int]string{
+	LED_TEMPERATURE: "Temperature",
+	LED_LOW_BATTERY: "Low Battery",
+	LED_OVERLOAD:    "Overload",
+	LED_INVERTER:    "Inverter",
+	LED_FLOAT:       "Float",
+	LED_BULK:        "Bulk",
+	LED_ABSORPTION:  "Absorbtion",
+	LED_MAIN:        "Mains",
+}
+
+type Mk2Info struct {
+	Valid bool
+
+	Version    uint32
+
+	BatVoltage float64
+	// Positive current == charging
+	// Negative current == discharging
+	BatCurrent float64
+
+	// Input AC parameters
+	InVoltage   float64
+	InCurrent   float64
+	InFrequency float64
+
+	// Output AC parameters
+	OutVoltage   float64
+	OutCurrent   float64
+	OutFrequency float64
+
+	// Charge state 0.0 to 1.0
+	ChargeState float64
+
+	// List only active LEDs
+	LedListOn    []int
+	LedListBlink []int
+
+	Errors []error
+}
+
+type Mk2If interface {
+	GetMk2Info() *Mk2Info
+	Close()
+}