Update adafruit_sgp30.py

Author: Dmole

adafruit_sgp30.py

@@ -130,18 +130,16 @@ def set_iaq_baseline(self, eCO2, TVOC): # pylint: disable=invalid-name
             buffer += arr
         self._run_profile(["iaq_set_baseline", [0x20, 0x1e] + buffer, 0, 0.01])
 
-    def set_iaq_humidity(self, phum): # pylint: disable=invalid-name
+    def set_iaq_humidity(self, rh): # pylint: disable=invalid-name
         """Set the humidity for eCO2 and TVOC compensation algorithm"""
-        if phum == 0:
-            raise RuntimeError('Invalid humidity')
+        rh = int(rh * 256)
         buffer = []
-        for value in [phum]:
+        for value in [rh]:
             arr = [value >> 8, value & 0xFF]
             arr.append(self._generate_crc(arr))
             buffer += arr
         self._run_profile(["iaq_set_humidity", [0x20, 0x61] + buffer, 0, 0.01])
 
-
     # Low level command functions
 
     def _run_profile(self, profile):