Initial upload for create HMC6352 code

Author: randymxj

Adafruit_HMC6352/Adafruit_HMC6352.py

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+#!/usr/bin/python
+
+import time
+from Adafruit_I2C import Adafruit_I2C
+
+# ===========================================================================
+# HMC6352 Class
+# ===========================================================================
+
+class HMC6352 :
+	i2c = None
+  
+	# HMC6352 Address
+	address = 0x42 >> 1
+	
+	# Commands
+	CMD_READ_DATA = 0x41
+	CMD_ENTER_USER_CALIBRATION = 0x45
+	CMD_EXIT_USER_CALIBRATION = 0x4C
+
+	# Constructor
+	def __init__(self):
+		self.i2c = Adafruit_I2C(self.address)
+	
+	def userCalibration(self):
+		"Write 0x45 for calibration and write 0x4C for leave after 20s"
+		self.i2c.write8(0x0, self.CMD_ENTER_USER_CALIBRATION)
+		time.sleep(20)
+		self.i2c.write8(0x0, self.CMD_EXIT_USER_CALIBRATION)
+		
+	def readData(self):
+		"Read the heading data by write a 0x41 first"
+		self.i2c.write8(0x0, self.CMD_READ_DATA)
+		# Wait 6 ms
+		time.sleep(0.006)
+		# Read 2 bytes
+		value = self.i2c.readU16(0x0)
+		# Reverse the data byte order
+		value = self.i2c.reverseByteOrder(value)
+		# Convert to 360.0 range from the raw integer value
+		value = float('%0.1f'%value)/10
+
+		return value

Adafruit_HMC6352/Adafruit_HMC6352_example.py

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+#!/usr/bin/python
+
+import time
+from Adafruit_HMC6352 import HMC6352
+
+# ===========================================================================
+# Example Code
+# ===========================================================================
+
+# Initialise the HMC6352
+hmc = HMC6352()
+
+heading = hmc.readData()
+print "Compass Heading: %.1f" % heading
+
+time.sleep(0.1)

Adafruit_HMC6352/Adafruit_I2C.py

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+../Adafruit_I2C/Adafruit_I2C.py