nodemcu-firmware/docs/modules/am2320.md

AM2320 Module

Since	Origin / Contributor	Maintainer	Source
2016-02-14	Henk Vergonet	Henk Vergonet	am2320.c

This module provides access to the AM2320 humidity and temperature sensor, using the i2c interface.

am2320.read()

Samples the sensor and returns the relative humidity in % and temperature in celsius, as an integer multiplied with 10.

Syntax

am2320.read()

Returns

• relative humidity percentage multiplied with 10 (integer)
• temperature in celcius multiplied with 10 (integer)

Example

sda, scl = 1, 2
i2c.setup(0, sda, scl, i2c.SLOW) -- call i2c.setup() only once
am2320.setup()
rh, t = am2320.read()
print(string.format("RH: %s%%", rh / 10))
print(string.format("Temperature: %s degrees C", t / 10))

am2320.setup()

Initializes the module. Returns model, version, serial but is seams these where all zero on my model.

Syntax

model, version, serial = am2320.setup()

Parameters

None

Returns

• model 16 bits number of model

• version 8 bits version number

• serial 32 bits serial number

  Note: I have only observed values of 0 for all of these, maybe other sensors return more sensible readings.