Protocol decoder:am230x

From sigrok
Jump to navigation Jump to search
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.
am230x
Aosong dht11 top.jpg
Name AM230x/DHTxx/RHTxx
Description Aosong AM230x/DHTxx/RHTxx humidity/temperature sensor protocol
Status supported
License GPLv2+
Source code decoders/am230x
Input logic
Output am230x
Probes SDA
Optional probes
Options device

The am230x protocol decoder decodes the Aosong AM230x/DHT11 temperature and humidity sensor single-wire protocol.

Hardware

See the am230x directory for example capture files.

Models

Model Microcontroller Temperature Humidity Datasheet
Aosong AM2301 Unknown SOIC-10 ? ? PDF
Aosong AM2302 ST STM8S103F3 (8S103F3P6), SOIC-20 analog analog PDF
Aosong AM2303 ST STM8S103F3 (8S103F3P6), SOIC-20 Dallas DS18B20 analog PDF
Aosong AM2305 ? ? ? PDF
Aosong AM2306 ? ? ? PDF
Aosong AM2320 ? ? ? ?
Aosong AM2321 ? ? ? ?
Aosong AM2322 ? ? ? ?
Aosong DHT11 Unknown SOIC-14 analog analog PDF
RTH03 ? ? ? https://www.sparkfun.com/products/10167

These parts are often renamed or rebadged.

Aosong AM2301

Aosong AM2302

Aosong AM2303

Aosong DHT11

Protocol

A custom single-wire protocol (not to be confused with the Dallas 1-Wire protocol!) is used to get the measured values from the sensor.

The actual payload consists of a humidity value, a temperature value, and a checksum.

Resources