PL7223

The driver class for the PL7223 is based on a datasheet under NDA (non-disclosure agreement). As such, we cannot open source the driver class, however we can make it available through Electric Imp's library management system.

To add this library to your project, add #require "PL7223.class.nut:1.0.0" to the top of your device code

Class Usage

constructor(spi, resetPin, chipSelectPin)

To instantiate a new PL7223 object, you must pass it three parameters: a pre-configured SPI bus, a reset pin, and a chip select pin:

#require "PL7223.class.nut:1.0"

// Configure Power Monitoring:
spi <- hardware.spi257;
spi.configure(CLOCK_IDLE_LOW, 100);

power <- PL7223(spi, hardware.pinB, hardware.pin8);

power.sample([callback])

The sample method takes a reading, and returns the Voltage (Volts), Current (Amps), and Power (watts).

An optional callback may be passed into the method. If the callback is not supplied, a table will be returned with the three values: voltage, current, and power (see example below). If a callback method is provided, the callback will be executed with the same data structure.

// no callback
local powerData = power.sample();
server.log("Voltage: " + powerData.voltage + "V");
server.log("Current: " + powerData.current + "A");
server.log("Power: " + powerData.power + "W");

// with a callback:
power.sample(function(powerData) {
  server.log("Voltage: " + powerData.voltage + "V");
  server.log("Current: " + powerData.current + "A");
  server.log("Power: " + powerData.power + "W");
});

License

The example code in this library is licensed under the MIT License.