tectiv3 / am2315-lua

NodeMCU Lua AM2315 temperature and humidity sensor

am2315-lua

NodeMCU Lua AM2315 temperature and humidity sensor

##Require

am2315 = require("am2315")

Release

am2315 = nil
package.loaded["am2315"]=nil

##Example ####Description getting temperature and humidity data from am2315.

####Syntax am2315.getData()

####init Parameters sda: 112, IO index.
scl: 112, IO index.
addr: i2c address (default 0x5c).

am2315 = require("am2315")
gpio0 = 4
gpio2 = 3
sda = gpio0
scl = gpio2
am2315.init(sda, scl)

-- Get temperature and humidity.
t,h = am2315.getData()
print(t, h)

-- Don't forget to release it after use
am2315 = nil
package.loaded["am2315"]=nil

am2315-lua's Issues

False result for temperature under 0°C

For AM2315 the MSB of the temperature is set for negative temperatures.
Masking this bit and multiplication of the result by -1 gives the right value in this case.

For upload I had to change from .lua to .txt. Rename it before use.
am2315.txt