I am working on the PietteTech_DHT library with DHT22 sensors, and example is working well in pin 2 and pin 3, however when I am connecting the DHT22 sensors with pin 5 or pin 6, the output will get stuck for no reason. any one knows why ? (I am using the spark core)

Okay, apologies in advance, but I have to ask: have you changed the pin declarations in the code accordingly?

I am using the PietteTech_DHT example, and only change the pin declarations in this #define DHTTYPEA DHT22 // Sensor type DHT11/21/22/AM2301/AM2302 #define DHTPINA 6 // Digital pin for comunications #define DHTTYPEB DHT22 // Sensor type DHT11/21/22/AM2301/AM2302 #define DH…

I too, would expect that to work. Hmm, we could always try asking @mtnscott who wrote the library. @peekay123 and/or @bko might also be able to chime in.

All I have tested so far seems that D0, D1, D2, D3, D4 are working well while D5,D6 are not

I have had the exact same problem on pin 5. I never thought to try other pins. I have no solution for you, I just wanted to back up your observation.

@helxsz , are you using a Photon or a Core? Also, if I can suggest using the full pin designation in your code (D5, D6 instead of 5,6). I can’t remember my own tests but D5, D6 and D7 are pins designated for JTAG debugging so I’m not sure what, if any, impact that may have. @BDub , any ideas?

HI, @peekay123 , i am currently using the Core. And I use full pin like D5 and D6, still get stuck in the program

@helxsz , @BDub or @mohit will need to get involved at this point.

It is good to find out this issue, so I am involved. will look into the library to see the problem

If you can give me some library code and an example, I’ll give it a try and see what the difference is on my oscilloscope. Once you take over a pin’s mode with pinMode() the state of the pins from boot will not be the default JTAG pull up/ pull down inputs. In fact, they should be defaulted as inp…

DHT22 sensor get stuck with Spark Core on pin 5 and pin 6 [SOLVED]

Troubleshooting

xxdede July 23, 2015, 12:54pm 17

Power 3V3 on DHT22 first pin and 1k resistor like this:

[SOLVED] DHT22 issue with Photon

Topic		Replies	Views
Wrong reading value for DH22 & get stuck after running for a while Libraries	17	20165	August 17, 2015
Unable to get results from DHT22 Getting Started	10	3784	January 6, 2017
DHT22 Returning Value of -7.00 on Photon w/ RelayShield Troubleshooting	12	4099	September 4, 2016
[Submission] Updated Non-blocking Interrupt Driven DHT Sensor Library Libraries	36	11976	January 22, 2019
Non-blocking interrupt driven DHT22 library	73	15316	October 14, 2014

DHT22 sensor get stuck with Spark Core on pin 5 and pin 6 [SOLVED]

Related topics