adafruit · dhavlik · Oct 8, 2012 · Oct 8, 2012 · Oct 8, 2012 · Oct 8, 2012
diff --git a/Adafruit_PWM_Servo_Driver/Adafruit_I2C.py b/Adafruit_PWM_Servo_Driver/Adafruit_I2C.py
diff --git a/Adafruit_PWM_Servo_Driver/Adafruit_PWM_Servo_Driver.py b/Adafruit_PWM_Servo_Driver/Adafruit_PWM_Servo_Driver.py
diff --git a/Adafruit_PWM_Servo_Driver/Adafruit_PWM_Servo_Driver.py b/Adafruit_PWM_Servo_Driver/Adafruit_PWM_Servo_Driver.py
@@ -0,0 +1 @@
+ada.pca9685/src/ada/pca9685/9685.py
diff --git a/Adafruit_PWM_Servo_Driver/ada.pca9685/CHANGES.txt b/Adafruit_PWM_Servo_Driver/ada.pca9685/CHANGES.txt
@@ -0,0 +1,9 @@
+Changelog
+=========
+
+0.1-dev (unreleased)
+--------------------
+
+- Initialize egg.
+
+- Move existing Python code into egg, add symlinks.
diff --git a/Adafruit_PWM_Servo_Driver/ada.pca9685/CONTRIBUTORS.txt b/Adafruit_PWM_Servo_Driver/ada.pca9685/CONTRIBUTORS.txt
@@ -0,0 +1,2 @@
+Daniel Havlik, Egg-packaging
+Adafruit Industries, Code/Cool hardware
diff --git a/Adafruit_PWM_Servo_Driver/ada.pca9685/README.txt b/Adafruit_PWM_Servo_Driver/ada.pca9685/README.txt
@@ -0,0 +1,14 @@
+.. contents::
+
+Introduction
+============
+
+This is a Library supporting the Adafruit PWM Servo Driver. (PCA9685
+Breakout).
+
+The code requires python-smbus to be installed on the system.
+
+For further documentation see
+<learn.adafruit.com
+`http://learn.adafruit.com/adafruit-16-channel-servo-driver-with-raspberry-pi/using-the-adafruit-library`>.
+
diff --git a/Adafruit_PWM_Servo_Driver/ada.pca9685/setup.py b/Adafruit_PWM_Servo_Driver/ada.pca9685/setup.py
@@ -0,0 +1,43 @@
+from setuptools import setup, find_packages
+import os
+
+version = '0.1'
+
+long_description = (
+    open('README.txt').read()
+    + '\n' +
+    'Contributors\n'
+    '============\n'
+    + '\n' +
+    open('CONTRIBUTORS.txt').read()
+    + '\n' +
+    open('CHANGES.txt').read()
+    + '\n')
+
+setup(name='ada.pca9685',
+      version=version,
+      description="Python library for interfacing the "Adafruit" PCA9685 16-Channel 12-bit PWM/Servo Driver.",
+      long_description=long_description,
+      # Get more strings from
+      # http://pypi.python.org/pypi?%3Aaction=list_classifiers
+      classifiers=[
+        "Programming Language :: Python",
+        ],
+      keywords='',
+      author='Daniel Havlik',
+      author_email='[email protected]',
+      url='https://github.com/dhavlik/Adafruit-Raspberry-Pi-Python-Code',
+      license='bsd',
+      packages=find_packages('src'),
+      package_dir = {'': 'src'},
+      namespace_packages=['ada'],
+      include_package_data=True,
+      zip_safe=False,
+      install_requires=[
+          'setuptools',
+          # -*- Extra requirements: -*-
+      ],
+      entry_points="""
+      # -*- Entry points: -*-
+      """,
+      )
diff --git a/Adafruit_PWM_Servo_Driver/ada.pca9685/src/ada/__init__.py b/Adafruit_PWM_Servo_Driver/ada.pca9685/src/ada/__init__.py
@@ -0,0 +1 @@
+__import__('pkg_resources').declare_namespace(__name__)
diff --git a/Adafruit_PWM_Servo_Driver/ada.pca9685/src/ada/pca9685/9685.py b/Adafruit_PWM_Servo_Driver/ada.pca9685/src/ada/pca9685/9685.py
@@ -0,0 +1,68 @@
+#coding:utf8
+
+import i2c
+import math
+import time
+
+DEFAULT = []
+
+SUBADR1 = 0x02
+SUBADR2 = 0x03
+SUBADR3 = 0x04
+MODE1 = 0x00
+PRESCALE = 0xFE
+LED0_ON_L = 0x06
+LED0_ON_H = 0x07
+LED0_OFF_L = 0x08
+LED0_OFF_H = 0x09
+ALLLED_ON_L = 0xFA
+ALLLED_ON_H = 0xFB
+ALLLED_OFF_L = 0xFC
+ALLLED_OFF_H = 0xFD
+
+
+class PWM(object):
+    """API for interfacing an PCA9685."""
+
+    i2c = None
+
+    def __init__(self, address=0x40, bus=DEFAULT, debug=False):
+        params = dict(address=address, bus=bus)
+        if bus == DEFAULT:
+            # Urks: Use default bus specified in Adafruit_I2C.__init__
+            # signature.
+            # Better refactor the I2C class to take only port number.
+            del params['bus']
+        self.i2c = i2c.Adafruit_I2C(**params)
+        self.address = address
+        self.debug = debug
+        if (self.debug):
+            print "Reseting PCA9685"
+        self.i2c.write8(MODE1, 0x00)
+
+    def setPWMFreq(self, freq):
+        """Sets the PWM frequency."""
+        prescaleval = 25000000.0    # 25MHz
+        prescaleval /= 4096.0       # 12-bit
+        prescaleval /= float(freq)
+        prescaleval -= 1.0
+        if (self.debug):
+            print "Setting PWM frequency to %d Hz" % freq
+            print "Estimated pre-scale: %d" % prescaleval
+        prescale = math.floor(prescaleval + 0.5)
+        if (self.debug):
+            print "Final pre-scale: %d" % prescale
+        oldmode = self.i2c.readU8(MODE1)
+        newmode = (oldmode & 0x7F) | 0x10             # sleep
+        self.i2c.write8(MODE1, newmode)        # go to sleep
+        self.i2c.write8(PRESCALE, int(math.floor(prescale)))
+        self.i2c.write8(MODE1, oldmode)
+        time.sleep(0.005)
+        self.i2c.write8(MODE1, oldmode | 0x80)
+
+    def setPWM(self, channel, on, off):
+        """Sets a single PWM channel."""
+        self.i2c.write8(LED0_ON_L + 4 * channel, on & 0xFF)
+        self.i2c.write8(LED0_ON_H + 4 * channel, on >> 8)
+        self.i2c.write8(LED0_OFF_L + 4 * channel, off & 0xFF)
+        self.i2c.write8(LED0_OFF_H + 4 * channel, off >> 8)
diff --git a/Adafruit_PWM_Servo_Driver/ada.pca9685/src/ada/pca9685/__init__.py b/Adafruit_PWM_Servo_Driver/ada.pca9685/src/ada/pca9685/__init__.py
@@ -0,0 +1 @@
+#init
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		Daniel Havlik, Egg-packaging
		Adafruit Industries, Code/Cool hardware
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		__import__('pkg_resources').declare_namespace(__name__)