[Issue #5] - Added a parameter to set which temperature sensor you're using in config.go

sensor.go

@@ -0,0 +1,106 @@
+package main
+
+import (
+	"errors"
+	"machine"
+  "time"
+
+	"tinygo.org/x/drivers/bme280"
+	"tinygo.org/x/drivers/sht4x"
+)
+
+type ClimateSensor interface {
+	ReadValues() (temp float64, pres float64, hum float64, hasPres bool, err error)
+	Name() string
+}
+
+// -------------------------------------------------------------
+// BME280 Adapter
+// -------------------------------------------------------------
+type BME280Adapter struct {
+	dev bme280.Device
+}
+
+func (b *BME280Adapter) ReadValues() (float64, float64, float64, bool, error) {
+	// ReadTemperature returns milli-°C (e.g. 25000 = 25.00°C)
+	tMilli, err := b.dev.ReadTemperature()
+	if err != nil {
+		return 0, 0, 0, false, err
+	}
+
+	// ReadPressure returns milli-Pa (divide by 100,000 for hPa)
+	pMilli, err := b.dev.ReadPressure()
+	if err != nil {
+		return 0, 0, 0, false, err
+	}
+
+	// ReadHumidity returns 100 * % (e.g. 4500 = 45.00%)
+	hPct, err := b.dev.ReadHumidity()
+	if err != nil {
+		return 0, 0, 0, false, err
+	}
+
+	temp := float64(tMilli) / 1000.0
+	pres := float64(pMilli) / 100000.0
+	hum := float64(hPct) / 100.0
+
+	return temp, pres, hum, true, nil
+}
+
+func (b *BME280Adapter) Name() string { return "BME280" }
+
+// -------------------------------------------------------------
+// SHT41 Adapter
+// -------------------------------------------------------------
+type SHT41Adapter struct {
+	dev sht4x.Device
+}
+
+func (s *SHT41Adapter) ReadValues() (float64, float64, float64, bool, error) {
+	// ReadTemperatureHumidity takes no parameters.
+	// Returns temp in milli-°C and humidity in milli-% (divide by 1000.0)
+	tMilli, hMilli, err := s.dev.ReadTemperatureHumidity()
+	if err != nil {
+		return 0, 0, 0, false, err
+	}
+
+	temp := float64(tMilli) / 1000.0
+	hum := float64(hMilli) / 1000.0
+
+	return temp, 0, hum, false, nil
+}
+
+func (s *SHT41Adapter) Name() string { return "SHT41" }
+
+// -------------------------------------------------------------
+// Factory
+// -------------------------------------------------------------
+func InitSensor(i2c *machine.I2C, sensorType string) (ClimateSensor, error) {
+  // Give the sensors a split-second to wake up before trying to register them
+  time.Sleep(100 * time.Millisecond)
+
+	switch sensorType {
+	case "bme280":
+		dev := bme280.New(i2c)
+		dev.Configure()
+		if !dev.Connected() {
+			return nil, errors.New("BME280 not found on I2C bus")
+		}
+		return &BME280Adapter{dev: dev}, nil
+
+	case "sht41":
+    dev := sht4x.New(i2c)
+    dev.Address = 0x45 // Default is 0x44 (sht4x.Address)
+    if _, _, err := dev.ReadTemperatureHumidity(); err != nil {
+        // Try fallback back to 0x44
+        dev.Address = 0x44
+        if _, _, err := dev.ReadTemperatureHumidity(); err != nil {
+            return nil, errors.New("SHT41 not found at 0x44 or 0x45")
+        }
+    }
+    return &SHT41Adapter{dev: dev}, nil
+
+	default:
+		return nil, errors.New("unsupported sensor configured")
+	}
+}