Merge pull request #26 from WizardTim/master

Improve example outputs

Author: siddacious

examples/ina219_simpletest.py

@@ -31,12 +31,20 @@
     bus_voltage = ina219.bus_voltage  # voltage on V- (load side)
     shunt_voltage = ina219.shunt_voltage  # voltage between V+ and V- across the shunt
     current = ina219.current  # current in mA
+    power = ina219.power  # power in watts
 
     # INA219 measure bus voltage on the load side. So PSU voltage = bus_voltage + shunt_voltage
-    print("PSU Voltage:   {:6.3f} V".format(bus_voltage + shunt_voltage))
-    print("Shunt Voltage: {:9.6f} V".format(shunt_voltage))
-    print("Load Voltage:  {:6.3f} V".format(bus_voltage))
-    print("Current:       {:9.6f} A".format(current / 1000))
+    print("Voltage (VIN+) : {:6.3f}   V".format(bus_voltage + shunt_voltage))
+    print("Voltage (VIN-) : {:6.3f}   V".format(bus_voltage))
+    print("Shunt Voltage  : {:8.5f} V".format(shunt_voltage))
+    print("Shunt Current  : {:7.4f}  A".format(current / 1000))
+    print("Power Calc.    : {:8.5f} W".format(bus_voltage * (current / 1000)))
+    print("Power Register : {:6.3f}   W".format(power))
     print("")
 
+    # Check internal calculations haven't overflowed (doesn't detect ADC overflows)
+    if ina219.overflow:
+        print("Internal Math Overflow Detected!")
+        print("")
+
     time.sleep(2)