feat: add TI INA219 sensor

examples/sensor_ina2xx/README.md

@@ -2,4 +2,4 @@
 
 Simple example with one TI INA226 sensor attached and using I2C interface.
 
-This example should also work with other INA22X and INA23X chips as well.
+This example should also work with other INA2XX chips as well.

examples/sensor_ina2xx/zigbee.yaml

@@ -18,7 +18,7 @@ sensors:
   - type: ina2xx
     # Must specify which model of sensor is being used.
     # Note that currently only INA226 was tested, 
-    # but other INA22X and INA23X should work as well.
+    # but other INA2XX should work as well.
     model: ina226
     # We also need to tell which I2C bus to use.
     # It must be defined in board.i2c configuration,
@@ -29,6 +29,8 @@ sensors:
     # It tells how many measurements sensor will 
     # use to average and return as result.
     # Can be from 1 to 1024, as a power of 2 (so 1, 2, 4, 8, 16, ...).
+    #
+    # Does nothing if model is 'ina219'.
     avg: 4
     # Reuiqred configuration.
     # Value in milliohms of shunt resistor used together

sensor/ti/ina2xx.go

@@ -99,6 +99,7 @@ func (i *INA2XX) ApplyOverlay(overlay *dt.DeviceTree) error {
 
 	// 1 lsb step in microvolts.
 	LsbUvForModel := map[string]float32{
+		"ina219": 10,     // 10 uV
 		"ina226": 2.5,    // 2.5 uV
 		"ina228": 0.3125, // 312.5 nV, ADCRANGE = 0
 		"ina230": 2.5,    // 2.5 uV
@@ -134,13 +135,18 @@ func (i *INA2XX) ApplyOverlay(overlay *dt.DeviceTree) error {
 			dt.NewProperty(dt.PropertyNameCompatible, dt.Quoted("ti,"+i.Model)),
 
 			dt.NewProperty("reg", dt.Angled(dt.String(i.I2C.Reg()))),
-			dt.NewProperty("avg-count", dt.FromValue(i.Avg)),
-			dt.NewProperty("rshunt-micro-ohms", dt.Angled(dt.String(shuntMicroOhmsStr))),
-			dt.NewProperty("current-lsb-microamps", dt.Angled(dt.String(currentMicroAmpsStr))),
 		},
 	}
 
-	i2c.AddNodes(inaNode)
+	var modelProps []dt.Property
+	// INA219 needs some other (older?) properties
+	if i.Model == "ina219" {
+		modelProps = i.dtProperties_ina219(shuntMicroOhmsStr, currentMicroAmpsStr)
+	} else {
+		modelProps = i.dtProperties_ina2xx(shuntMicroOhmsStr, currentMicroAmpsStr)
+	}
+
+	i2c.AddNodes(inaNode.AddProperties(modelProps...))
 
 	return nil
 }
@@ -151,3 +157,18 @@ func (*INA2XX) Extenders() []generator.Extender {
 		extenders.ElectricalMeasurement{},
 	}
 }
+
+func (i *INA2XX) dtProperties_ina219(shuntUOhms, currentUAmps string) []dt.Property {
+	return []dt.Property{
+		dt.NewProperty("shunt-milliohm", dt.Angled(dt.String(shuntUOhms))),
+		dt.NewProperty("lsb-microamp", dt.Angled(dt.String(currentUAmps))),
+	}
+}
+
+func (i *INA2XX) dtProperties_ina2xx(shuntUOhms, currentUAmps string) []dt.Property {
+	return []dt.Property{
+		dt.NewProperty("avg-count", dt.FromValue(i.Avg)),
+		dt.NewProperty("rshunt-micro-ohms", dt.Angled(dt.String(shuntUOhms))),
+		dt.NewProperty("current-lsb-microamps", dt.Angled(dt.String(currentUAmps))),
+	}
+}