DHT22 sensor data pin reading low

Hi Team Nordic,

According to the AM2302 (DHT22) datasheet, the data pin will be pulled to high state in idle state. But in my case, when i am reading the data pin before even sending any signal to the sensor, i am reading 0 on the data pin. I am using p0.07 (pin 9 ) as data pin. VCC -> 5V, GND -> GND.

Am i not reading the pin correctly or is it a communication protocol error that i have to figure out?

Please find attached the image with output. 

Thanks, 

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  • I am using p0.07 (pin 9 ) as data pin. VCC -> 5V, GND -> GND.

    Trying to describe circuit connections in words is a waste of time. Please post a schematic (aka "circuit diagram").

    You haven't said what Nordic part you're using, but the Absolute Maximum voltage at any IO pin on the nRF52832 is 3.9V - I expect others are similar ...

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