Incorrect frequency limit for DHT11

[cryptoAlgorithm]

• Arduino board: Raspberry Pi Pico (RP2040 B1)

• Arduino IDE version (found in Arduino -> About Arduino menu): PlatformIO earlephilhower core

• List the steps to reproduce the problem below (if possible attach a sketch or copy the sketch code in too):

1. Read values from the sensor in a loop: dht.readHumidity() or dht.readTemperature()
2. Observe that values do not change at a frequency higher than 0.5Hz

It appears that this is due to an artificial ratelimit imposed by the DHT::read(...) method. Specifically, MIN_INTERVAL is hardcoded to 2000 for all types of sensors, which I assume is due to the DHT22's maximum read frequency of 0.5Hz. However, other sensors supported by this library, such as the DHT11, can read at a higher rate of 1Hz, so this value should instead be set based on the sensor type.

[MakerPact]

It appears that this issue is currently resolved. If it is not, please inform me. Otherwise, the ticket can be closed.

This is my reference @cryptoAlgorithm

[cryptoAlgorithm]

@MaderDash Nope, the file in question is DHT.cpp, not the "unified library" in DHT_U.cpp.

https://github.com/adafruit/DHT-sensor-library/blob/2295fe471c38d5e649a7b68cecccc42193c8e41c/DHT.cpp#L28

In the vanilla DHT library in this repository, the minimum interval is hardcoded with a preprocessor definition to be 2000ms (0.5Hz).