master initial

Author: AhmetCanSolak

.gitignore

@@ -102,3 +102,5 @@ venv.bak/
 
 # mypy
 .mypy_cache/
+
+.idea/

fishfeed/PCA9685.py

@@ -0,0 +1,97 @@
+#!/usr/bin/python
+
+import time
+import math
+import smbus
+
+
+# ============================================================================
+# Raspi PCA9685 16-Channel PWM Servo Driver
+# ============================================================================
+
+class PCA9685:
+    # Registers/etc.
+    __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
+
+    def __init__(self, address=0x40, debug=False):
+        self.bus = smbus.SMBus(1)
+        self.address = address
+        self.debug = debug
+        if (self.debug):
+            print("Reseting PCA9685")
+        self.write(self.__MODE1, 0x00)
+
+    def write(self, reg, value):
+        "Writes an 8-bit value to the specified register/address"
+        self.bus.write_byte_data(self.address, reg, value)
+        if (self.debug):
+            print("I2C: Write 0x%02X to register 0x%02X" % (value, reg))
+
+    def read(self, reg):
+        "Read an unsigned byte from the I2C device"
+        result = self.bus.read_byte_data(self.address, reg)
+        if (self.debug):
+            print("I2C: Device 0x%02X returned 0x%02X from reg 0x%02X" % (self.address, result & 0xFF, reg))
+        return result
+
+    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.read(self.__MODE1);
+        newmode = (oldmode & 0x7F) | 0x10  # sleep
+        self.write(self.__MODE1, newmode)  # go to sleep
+        self.write(self.__PRESCALE, int(math.floor(prescale)))
+        self.write(self.__MODE1, oldmode)
+        time.sleep(0.005)
+        self.write(self.__MODE1, oldmode | 0x80)
+
+    def setPWM(self, channel, on, off):
+        "Sets a single PWM channel"
+        self.write(self.__LED0_ON_L + 4 * channel, on & 0xFF)
+        self.write(self.__LED0_ON_H + 4 * channel, on >> 8)
+        self.write(self.__LED0_OFF_L + 4 * channel, off & 0xFF)
+        self.write(self.__LED0_OFF_H + 4 * channel, off >> 8)
+        if (self.debug):
+            print("channel: %d  LED_ON: %d LED_OFF: %d" % (channel, on, off))
+
+    def setServoPulse(self, channel, pulse):
+        "Sets the Servo Pulse,The PWM frequency must be 50HZ"
+        pulse = pulse * 4096 / 20000  # PWM frequency is 50HZ,the period is 20000us
+        self.setPWM(channel, 0, int(pulse))
+
+
+if __name__ == '__main__':
+
+    pwm = PCA9685(0x40, debug=False)
+    pwm.setPWMFreq(50)
+    while True:
+        # setServoPulse(2,2500)
+        for i in range(500, 2500, 10):
+            pwm.setServoPulse(0, i)
+            time.sleep(0.02)
+
+        for i in range(2500, 500, -10):
+            pwm.setServoPulse(0, i)
+            time.sleep(0.02)

fishfeed/__init__.py

@@ -0,0 +1,28 @@
+import click
+
+CONTEXT_SETTINGS = dict(help_option_names=['-h', '--help'])
+
+
+@click.group(invoke_without_command=True, context_settings=CONTEXT_SETTINGS)
+@click.version_option(version='0.1')
+def fishfeed():
+    pass
+
+
+@fishfeed.command()
+def run(**kwargs):
+    fishfeed.run()
+
+
+@fishfeed.command()
+def last5(**kwargs):
+    click.echo(5)
+
+
+@fishfeed.command()
+def last50(**kwargs):
+    click.echo(50)
+
+
+if __name__ == '__main__':
+    fishfeed()

fishfeed/cli.py

@@ -0,0 +1,22 @@
+from picamera import PiCamera
+
+from PCA9685 import PCA9685
+
+
+class Singleton(type):
+    _instances = {}
+
+    def __call__(cls, *args, **kwargs):
+        if cls not in cls._instances:
+            cls._instances[cls] = super(Singleton, cls).__call__(*args, **kwargs)
+        return cls._instances[cls]
+
+
+class Ctx(object):
+    __metaclass__ = Singleton
+    camera = PiCamera()
+    pwm = PCA9685(0x40, debug=False)
+
+    DAY = None
+    TIME = None
+    STATUS = None

fishfeed/ctx.py

@@ -0,0 +1,43 @@
+import datetime
+from time import sleep
+
+
+
+def initialize():
+    Ctx.DAY, Ctx.TIME = datetime.datetime.today().strftime('%Y-%m-%d %H:%M:%S').split()
+    Ctx.pwm.setPWMFreq(50)
+
+def prepare():
+    # put food
+
+    # put water
+
+def stream():
+    pass
+
+def clean():
+    for _ in range(2):
+        # put water
+
+        # thrash water
+
+
+def finalize():
+    print Ctx.DAY, Ctx.TIME, Ctx.STATUS
+
+
+def run():
+    # initialize ports
+    initialize()
+
+    # prepare food
+    prepare()
+
+    # stream
+    stream()
+
+    # clean
+    clean()
+
+    # finalize
+    finalize()

fishfeed/fishfeed.py

@@ -0,0 +1,14 @@
+from setuptools import setup
+
+setup(
+    name='fishfeed',
+    version='0.1',
+    py_modules=['fishfeed'],
+    install_requires=[
+        'Click', 'smbus'
+    ],
+    entry_points='''
+        [console_scripts]
+        fishfeed=fishfeed.cli:fishfeed
+    ''',
+)