munin-miflora: refactor into two implementations using go-ble and gatt libraries, have common package

common/proto.go

@@ -0,0 +1,32 @@
+package common
+
+import (
+	"encoding/binary"
+)
+
+const (
+	MifloraServiceUUID            = "00001204-0000-1000-8000-00805f9b34fb"
+	MifloraCharModeChangeUUID     = "00001a00-0000-1000-8000-00805f9b34fb"
+	MifloraCharReadSensorDataUUID = "00001a01-0000-1000-8000-00805f9b34fb"
+	MifloraCharVersionBatteryUUID = "00001a02-0000-1000-8000-00805f9b34fb"
+)
+
+func MifloraGetModeChangeData() []byte {
+	return []byte{0xa0, 0x1f}
+}
+
+func ParseVersionBattery(bytes []byte) VersionBatteryResponse {
+	return VersionBatteryResponse{
+		string(bytes[2:]),
+		uint8(bytes[0]),
+	}
+}
+
+func ParseSensorData(bytes []byte) SensorDataResponse {
+	return SensorDataResponse{
+		Temperature:  float64(binary.LittleEndian.Uint16(bytes[0:2])) / 10.0,
+		Brightness:   binary.LittleEndian.Uint32(bytes[3:7]),
+		Moisture:     uint8(bytes[7]),
+		Conductivity: binary.LittleEndian.Uint16(bytes[8:10]),
+	}
+}