Because of an overflow unsigned int last_read_time in struct mgos_dht and unsigned int now in bool dht_read(), if sntp service is enabled in config, the sensor will always report the same reading because double mg_time() gets too big for an unsigned int and time will always be 2^32-1.

Hi!

DHT22 returning -3271.800049 for -2.375000 (humidity is ok)
same was solved in https://forum.pjrc.com/index.php?threads/dht22-checksum-error-for-negative-temperatures.70344/

Please add DHT12 support to this library. DHT12 uses I2C, not the 1 wire protocol. I would be happy to contribute to this repo but there are no contribution instructions. I will note that DHT12 is pretty much what is being sold now. I would do this myself outside of this but there is no way in mjs to convert a byte to a integer that I can find. And there really isn't a guide to add c functions to be able to call from mjs that I can find. Any help would be appreciated