add tests for power management

lora_test.go

@@ -58,3 +58,24 @@ func TestTimeOnAir(t *testing.T) {
 		})
 	}
 }
+
+func TestTemperature(t *testing.T) {
+	for _, cs := range []struct {
+		tempVal uint8
+		expect  uint8
+		celsius int
+	}{
+		{tempVal: 63, expect: 0, celsius: -40},
+		{tempVal: 33, expect: 36, celsius: -15},
+		{tempVal: 0, expect: 100, celsius: 15},
+		{tempVal: 245, expect: 128, celsius: 10},
+		{tempVal: 211, expect: 220, celsius: 55},
+		{tempVal: 181, expect: 255, celsius: 85},
+	} {
+		val := cs.tempVal
+		val -= 64
+		val = uint8(255 - 14*uint16(val)/8)
+		// val += 128
+		t.Errorf("regTemp=%d  val=%d  expect=%d  celsius=%d", cs.tempVal, val, cs.expect, cs.celsius)
+	}
+}