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Software/Python/grove_i2c_temp_hum_hdc1000/grove_hdc_1000_example.py

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+#!/usr/bin/env python
+#
+# GrovePi Example for using the Grove - Temperature&Humidity Sensor (HDC1000)(http://www.seeedstudio.com/depot/Grove-TemperatureHumidity-Sensor-HDC1000-p-2535.html)
+#
+# The GrovePi connects the Raspberry Pi and Grove sensors.  You can learn more about GrovePi here:  http://www.dexterindustries.com/GrovePi
+#
+# Have a question about this example?  Ask on the forums here:  http://forum.dexterindustries.com/c/grovepi
+#
+# This example is derived from the HDC1000 example by control everyhing here: https://github.com/ControlEverythingCommunity/HDC1000/blob/master/Python/HDC1000.py
+'''
+## License
+
+The MIT License (MIT)
+
+GrovePi for the Raspberry Pi: an open source platform for connecting Grove Sensors to the Raspberry Pi.
+Copyright (C) 2017  Dexter Industries
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+'''
+
+from grove_i2c_temp_hum_hdc1000 import HDC1000
+import time
+
+hdc = HDC1000()
+hdc.Config()
+
+while 1:
+    print('Temp    : %.2f C' % hdc.Temperature())
+    print('Humidity: %.2f %%' % hdc.Humidity())
+    print('-' * 17)
+    time.sleep(1)

Software/Python/grove_i2c_temp_hum_hdc1000/grove_i2c_temp_hum_hdc1000.py

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+#!/usr/bin/env python
+#
+# GrovePi Library for using the Grove - Temperature&Humidity Sensor (HDC1000)(http://www.seeedstudio.com/depot/Grove-TemperatureHumidity-Sensor-HDC1000-p-2535.html)
+#
+# The GrovePi connects the Raspberry Pi and Grove sensors.  You can learn more about GrovePi here:  http://www.dexterindustries.com/GrovePi
+#
+# Have a question about this library?  Ask on the forums here:  http://forum.dexterindustries.com/c/grovepi
+#
+# This library is derived from the HDC1000 library by aklib here: https://github.com/nonNoise/akilib/blob/master/akilib/raspberrypi/AKI_I2C_HDC1000.py
+#
+
+# Released under the MIT license (http://choosealicense.com/licenses/mit/).
+# For more information see https://github.com/DexterInd/GrovePi/blob/master/LICENSE
+
+import smbus
+import RPi.GPIO as GPIO
+import time
+
+rev = GPIO.RPI_REVISION
+if rev == 2 or rev == 3:
+    bus = smbus.SMBus(1)
+else:
+    bus = smbus.SMBus(0)
+
+class HDC1000:
+    I2C_ADDR = 0
+    def __init__(self):
+        self.I2C_ADDR=0x40
+
+    def Config(self):
+        # HDC1000 address, 0x40(64)
+        # Select configuration register, 0x02(02)
+        #		0x30(48)	Temperature, Humidity enabled, Resolultion = 14-bits, Heater on
+        bus.write_byte_data(self.I2C_ADDR, 0x02, 0x30)
+
+    def Temperature(self):
+        try :
+            bus.write_byte(self.I2C_ADDR,0x00)
+            time.sleep(0.50)
+
+            # Read data back, 2 bytes
+            # temp MSB, temp LSB
+            data0 = bus.read_byte(0x40)
+            data1 = bus.read_byte(0x40)
+
+            # Convert the data
+            temp = (data0 * 256) + data1
+            cTemp = (temp / 65536.0) * 165.0 - 40
+            return cTemp
+        except IOError as err:
+            print("No ACK!")
+            time.sleep(0.1)
+            self.Temperature()
+
+    def Humidity(self):
+        try :
+            bus.write_byte(self.I2C_ADDR,0x01)
+            time.sleep(0.50)
+
+            # Read data back, 2 bytes
+            # humidity MSB, humidity LSB
+            data0 = bus.read_byte(0x40)
+            data1 = bus.read_byte(0x40)
+
+            # Convert the data
+            humidity = (data0 * 256) + data1
+            humidity = (humidity / 65536.0) * 100.0
+            return humidity
+        except IOError as err:
+            print("No ACK!")
+            time.sleep(0.1)
+            self.Humidity()