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TM4C123GH6PM: Connection to DH22

Basavanagouda Ganganagoudar58
Intellectual 330 points

Part Number: TM4C123GH6PM

HI

I am trying to communicate with the DH22 sensor using CCS and tiva launchpad. I am unable to get any signal from the dh22 

I have given required delay for the communication so that the sensor can read but the output of the sensor is always high during the initial procedure and does not provide the data to the microcontroller.

Only thing i am confused about is the 2 s delay is on power up means the delay after issuing the start signal from the cpu or on connectin therm to the voltage levels.