DHT_readTemperature for DHT21/DHT22 Temp sensor - wrong negative value

[zimmerik]

DHT_readTemperature for DHT21/DHT22 Temp sensor - wrong negative values, for negative values only, the first bit is not masked (for negative values & 0x7F) and returns temperature of -3276.7 instead of -0.1

possibly the conversion in src/driver/drv_dht_internal.c is not called from drive_dht.c with correct parameters:

`float DHT_readTemperature(dht_t *dht, bool S, bool force) {
float f = 0;
byte *data;
data = dht->data;

if (DHT_read(dht,force)) {
	switch (dht->_type) {
            .....
            .....
	case DHT22:
	case DHT21:
		f = ((unsigned short)(data[2] & 0x7F)) << 8 | data[3];
		f *= 0.1;
		if (data[2] & 0x80) {
			f *= -1;
		}
		if (S) {
			f = convertCtoF(f);
		}
		break;
	}
}
return f;`

is not performed correctly

when calling this function?

I am observing this issue with
BK7231N
von Beken Corporation
Firmware: 1.17.104

and DHT21/DHT22 temperature sensor.