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.

!!! caution

This code is licensed under GPL by its author. Any binaries that include this module becomes subject to the GPL, requiring anyone who ships them to also ship source.

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.