DHT.h library issue on Linux (Debian 10 Buster) Moderators: adafruit_support_bill, adafruit

[weinhouse]

Sorry if this is the wrong place to post and please let me know where to post.

Was getting error:
/home/larryw/sketchbook/libraries/DHT_sensor_library141/DHT.cpp:31:3: error: ‘UINT32_MAX’ was not declared in this scope
UINT32_MAX /**< Used programmatically for timeout.

With some internet searching I added a line in DHT.cpp file:
#define UINT32_MAX 65535

Is this line correct? seems to work now, is there something else that could be the issue?

OS - Debian 10 Buster
Arduino IDE 2:1.o.5+dfsg2-4.1

[adafruit_support_mike]

Strictly speaking, it should be:

Code: Select all | TOGGLE FULL SIZE

#define UINT32_MAX 0xffffffff


.. the maximum value you can store in a 32-bit unsigned integer.

Looking at the code though, the value is only used as a symbol indicating the microcontroller timed out waiting for a pulse to change. As long as the value you chose works, you should be okay.

[weinhouse]

Thanks!