diff --git a/python/current.py b/python/current.py new file mode 100644 index 00000000..30b24dd3 --- /dev/null +++ b/python/current.py @@ -0,0 +1,48 @@ +"""Sample code and test for adafruit_in219""" + +import sys +import board +import busio +from adafruit_extended_bus import ExtendedI2C as I2C +from adafruit_ina219 import ADCResolution, BusVoltageRange, INA219 + +if __name__ == "__main__": +# print 'Length: ', len(sys.argv) + + if (len(sys.argv)) > 1: +# print("There are arguments!") +# if (('a' == sys.argv[1]) or ('afsk' in sys.argv[1])): + bus = int(sys.argv[1], base=10) + if (len(sys.argv)) > 2: + address = int(sys.argv[2], base=16) + else: + address = 0x40 + else: + bus = 1 + address = 0x40 + + # Create library object using Extended Bus I2C port + i2c_bus = I2C(bus) # 1 Device is /dev/i2c-1 + + ina219 = INA219(i2c_bus, address) + +# print("ina219 test") + +# optional : change configuration to use 32 samples averaging for both bus voltage and shunt voltage + ina219.bus_adc_resolution = ADCResolution.ADCRES_12BIT_32S + ina219.shunt_adc_resolution = ADCResolution.ADCRES_12BIT_32S +# optional : change voltage range to 16V + ina219.bus_voltage_range = BusVoltageRange.RANGE_16V + + 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 + + # INA219 measure bus voltage on the load side. So PSU voltage = bus_voltage + shunt_voltage +# print("{:6.3f}".format(bus_voltage + shunt_voltage)) +# print("Shunt Voltage: {:9.6f} V".format(shunt_voltage)) +# print("Load Voltage: {:6.3f} V".format(bus_voltage)) + print("{:9.1f}".format(current)) +# print("") + +# time.sleep(2)