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2015-01-23 21:03:22 +00:00
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252
Adafruit_MotorHAT/Adafruit_MotorHAT.py Executable file
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#!/usr/bin/python
from Adafruit_PWM_Servo_Driver import PWM
import time
class Adafruit_StepperMotor:
MICROSTEPS = 8
MICROSTEP_CURVE = [0, 50, 98, 142, 180, 212, 236, 250, 255]
#MICROSTEPS = 16
# a sinusoidal curve NOT LINEAR!
#MICROSTEP_CURVE = [0, 25, 50, 74, 98, 120, 141, 162, 180, 197, 212, 225, 236, 244, 250, 253, 255]
def __init__(self, controller, num, steps=200):
self.MC = controller
self.revsteps = steps
self.motornum = num
self.sec_per_step = 0.1
self.steppingcounter = 0
self.currentstep = 0
num -= 1
if (num == 0):
self.PWMA = 8
self.AIN2 = 9
self.AIN1 = 10
self.PWMB = 13
self.BIN2 = 12
self.BIN1 = 11
elif (num == 1):
self.PWMA = 2
self.AIN2 = 3
self.AIN1 = 4
self.PWMB = 7
self.BIN2 = 6
self.BIN1 = 5
else:
raise NameError('MotorHAT Stepper must be between 1 and 2 inclusive')
def setSpeed(self, rpm):
self.sec_per_step = 60.0 / (self.revsteps * rpm)
self.steppingcounter = 0
def oneStep(self, dir, style):
pwm_a = pwm_b = 255
# first determine what sort of stepping procedure we're up to
if (style == Adafruit_MotorHAT.SINGLE):
if ((self.currentstep/(self.MICROSTEPS/2)) % 2):
# we're at an odd step, weird
if (dir == Adafruit_MotorHAT.FORWARD):
self.currentstep += self.MICROSTEPS/2
else:
self.currentstep -= self.MICROSTEPS/2
else:
# go to next even step
if (dir == Adafruit_MotorHAT.FORWARD):
self.currentstep += self.MICROSTEPS
else:
self.currentstep -= self.MICROSTEPS
if (style == Adafruit_MotorHAT.DOUBLE):
if not (self.currentstep/(self.MICROSTEPS/2) % 2):
# we're at an even step, weird
if (dir == Adafruit_MotorHAT.FORWARD):
self.currentstep += self.MICROSTEPS/2
else:
self.currentstep -= self.MICROSTEPS/2
else:
# go to next odd step
if (dir == Adafruit_MotorHAT.FORWARD):
self.currentstep += self.MICROSTEPS
else:
self.currentstep -= self.MICROSTEPS
if (style == Adafruit_MotorHAT.INTERLEAVE):
if (dir == Adafruit_MotorHAT.FORWARD):
self.currentstep += self.MICROSTEPS/2
else:
self.currentstep -= self.MICROSTEPS/2
if (style == Adafruit_MotorHAT.MICROSTEP):
if (dir == Adafruit_MotorHAT.FORWARD):
self.currentstep += 1
else:
self.currentstep -= 1
# go to next 'step' and wrap around
self.currentstep += self.MICROSTEPS * 4
self.currentstep %= self.MICROSTEPS * 4
pwm_a = pwm_b = 0
if (self.currentstep >= 0) and (self.currentstep < self.MICROSTEPS):
pwm_a = self.MICROSTEP_CURVE[self.MICROSTEPS - self.currentstep]
pwm_b = self.MICROSTEP_CURVE[self.currentstep]
elif (self.currentstep >= self.MICROSTEPS) and (self.currentstep < self.MICROSTEPS*2):
pwm_a = self.MICROSTEP_CURVE[self.currentstep - self.MICROSTEPS]
pwm_b = self.MICROSTEP_CURVE[self.MICROSTEPS*2 - self.currentstep]
elif (self.currentstep >= self.MICROSTEPS*2) and (self.currentstep < self.MICROSTEPS*3):
pwm_a = self.MICROSTEP_CURVE[self.MICROSTEPS*3 - self.currentstep]
pwm_b = self.MICROSTEP_CURVE[self.currentstep - self.MICROSTEPS*2]
elif (self.currentstep >= self.MICROSTEPS*3) and (self.currentstep < self.MICROSTEPS*4):
pwm_a = self.MICROSTEP_CURVE[self.currentstep - self.MICROSTEPS*3]
pwm_b = self.MICROSTEP_CURVE[self.MICROSTEPS*4 - self.currentstep]
# go to next 'step' and wrap around
self.currentstep += self.MICROSTEPS * 4
self.currentstep %= self.MICROSTEPS * 4
# only really used for microstepping, otherwise always on!
self.MC._pwm.setPWM(self.PWMA, 0, pwm_a*16)
self.MC._pwm.setPWM(self.PWMB, 0, pwm_b*16)
# set up coil energizing!
coils = [0, 0, 0, 0]
if (style == Adafruit_MotorHAT.MICROSTEP):
if (self.currentstep >= 0) and (self.currentstep < self.MICROSTEPS):
coils = [1, 1, 0, 0]
elif (self.currentstep >= self.MICROSTEPS) and (self.currentstep < self.MICROSTEPS*2):
coils = [0, 1, 1, 0]
elif (self.currentstep >= self.MICROSTEPS*2) and (self.currentstep < self.MICROSTEPS*3):
coils = [0, 0, 1, 1]
elif (self.currentstep >= self.MICROSTEPS*3) and (self.currentstep < self.MICROSTEPS*4):
coils = [1, 0, 0, 1]
else:
step2coils = [ [1, 0, 0, 0],
[1, 1, 0, 0],
[0, 1, 0, 0],
[0, 1, 1, 0],
[0, 0, 1, 0],
[0, 0, 1, 1],
[0, 0, 0, 1],
[1, 0, 0, 1] ]
coils = step2coils[self.currentstep/(self.MICROSTEPS/2)]
#print "coils state = " + str(coils)
self.MC.setPin(self.AIN2, coils[0])
self.MC.setPin(self.BIN1, coils[1])
self.MC.setPin(self.AIN1, coils[2])
self.MC.setPin(self.BIN2, coils[3])
return self.currentstep
def step(self, steps, direction, stepstyle):
s_per_s = self.sec_per_step
lateststep = 0
if (stepstyle == Adafruit_MotorHAT.INTERLEAVE):
s_per_s = s_per_s / 2.0
if (stepstyle == Adafruit_MotorHAT.MICROSTEP):
s_per_s /= self.MICROSTEPS
steps *= self.MICROSTEPS
print s_per_s, " sec per step"
for s in range(steps):
lateststep = self.oneStep(direction, stepstyle)
time.sleep(s_per_s)
if (stepstyle == Adafruit_MotorHAT.MICROSTEP):
# this is an edge case, if we are in between full steps, lets just keep going
# so we end on a full step
while (lateststep != 0) and (lateststep != self.MICROSTEPS):
lateststep = self.oneStep(dir, stepstyle)
time.sleep(s_per_s)
class Adafruit_DCMotor:
def __init__(self, controller, num):
self.MC = controller
self.motornum = num
pwm = in1 = in2 = 0
if (num == 0):
pwm = 8
in2 = 9
in1 = 10
elif (num == 1):
pwm = 13
in2 = 12
in1 = 11
elif (num == 2):
pwm = 2
in2 = 3
in1 = 4
elif (num == 3):
pwm = 7
in2 = 6
in1 = 5
else:
raise NameError('MotorHAT Motor must be between 1 and 4 inclusive')
self.PWMpin = pwm
self.IN1pin = in1
self.IN2pin = in2
def run(self, command):
if not self.MC:
return
if (command == Adafruit_MotorHAT.FORWARD):
self.MC.setPin(self.IN2pin, 0)
self.MC.setPin(self.IN1pin, 1)
if (command == Adafruit_MotorHAT.BACKWARD):
self.MC.setPin(self.IN1pin, 0)
self.MC.setPin(self.IN2pin, 1)
if (command == Adafruit_MotorHAT.RELEASE):
self.MC.setPin(self.IN1pin, 0)
self.MC.setPin(self.IN2pin, 0)
def setSpeed(self, speed):
if (speed < 0):
speed = 0
if (speed > 255):
speed = 255
self.MC._pwm.setPWM(self.PWMpin, 0, speed*16)
class Adafruit_MotorHAT:
FORWARD = 1
BACKWARD = 2
BRAKE = 3
RELEASE = 4
SINGLE = 1
DOUBLE = 2
INTERLEAVE = 3
MICROSTEP = 4
def __init__(self, addr = 0x60, freq = 1600):
self._i2caddr = addr # default addr on HAT
self._frequency = freq # default @1600Hz PWM freq
self.motors = [ Adafruit_DCMotor(self, m) for m in range(4) ]
self.steppers = [ Adafruit_StepperMotor(self, 1), Adafruit_StepperMotor(self, 2) ]
self._pwm = PWM(addr, debug=False)
self._pwm.setPWMFreq(self._frequency)
def setPin(self, pin, value):
if (pin < 0) or (pin > 15):
raise NameError('PWM pin must be between 0 and 15 inclusive')
if (value != 0) and (value != 1):
raise NameError('Pin value must be 0 or 1!')
if (value == 0):
self._pwm.setPWM(pin, 0, 4096)
if (value == 1):
self._pwm.setPWM(pin, 4096, 0)
def getStepper(self, steps, num):
if (num < 1) or (num > 2):
raise NameError('MotorHAT Stepper must be between 1 and 2 inclusive')
return self.steppers[num-1]
def getMotor(self, num):
if (num < 1) or (num > 4):
raise NameError('MotorHAT Motor must be between 1 and 4 inclusive')
return self.motors[num-1]

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Adafruit_MotorHAT/Adafruit_PWM_Servo_Driver.py Normal file
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#!/usr/bin/python
import time
import math
from Adafruit_I2C import Adafruit_I2C
# ============================================================================
# Adafruit PCA9685 16-Channel PWM Servo Driver
# ============================================================================
class PWM :
# Registers/etc.
__MODE1 = 0x00
__MODE2 = 0x01
__SUBADR1 = 0x02
__SUBADR2 = 0x03
__SUBADR3 = 0x04
__PRESCALE = 0xFE
__LED0_ON_L = 0x06
__LED0_ON_H = 0x07
__LED0_OFF_L = 0x08
__LED0_OFF_H = 0x09
__ALL_LED_ON_L = 0xFA
__ALL_LED_ON_H = 0xFB
__ALL_LED_OFF_L = 0xFC
__ALL_LED_OFF_H = 0xFD
# Bits
__RESTART = 0x80
__SLEEP = 0x10
__ALLCALL = 0x01
__INVRT = 0x10
__OUTDRV = 0x04
general_call_i2c = Adafruit_I2C(0x00)
@classmethod
def softwareReset(cls):
"Sends a software reset (SWRST) command to all the servo drivers on the bus"
cls.general_call_i2c.writeRaw8(0x06) # SWRST
def __init__(self, address=0x40, debug=False):
self.i2c = Adafruit_I2C(address)
self.i2c.debug = debug
self.address = address
self.debug = debug
if (self.debug):
print "Reseting PCA9685 MODE1 (without SLEEP) and MODE2"
self.setAllPWM(0, 0)
self.i2c.write8(self.__MODE2, self.__OUTDRV)
self.i2c.write8(self.__MODE1, self.__ALLCALL)
time.sleep(0.005) # wait for oscillator
mode1 = self.i2c.readU8(self.__MODE1)
mode1 = mode1 & ~self.__SLEEP # wake up (reset sleep)
self.i2c.write8(self.__MODE1, mode1)
time.sleep(0.005) # wait for oscillator
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(self.__MODE1);
newmode = (oldmode & 0x7F) | 0x10 # sleep
self.i2c.write8(self.__MODE1, newmode) # go to sleep
self.i2c.write8(self.__PRESCALE, int(math.floor(prescale)))
self.i2c.write8(self.__MODE1, oldmode)
time.sleep(0.005)
self.i2c.write8(self.__MODE1, oldmode | 0x80)
def setPWM(self, channel, on, off):
"Sets a single PWM channel"
self.i2c.write8(self.__LED0_ON_L+4*channel, on & 0xFF)
self.i2c.write8(self.__LED0_ON_H+4*channel, on >> 8)
self.i2c.write8(self.__LED0_OFF_L+4*channel, off & 0xFF)
self.i2c.write8(self.__LED0_OFF_H+4*channel, off >> 8)
def setAllPWM(self, on, off):
"Sets a all PWM channels"
self.i2c.write8(self.__ALL_LED_ON_L, on & 0xFF)
self.i2c.write8(self.__ALL_LED_ON_H, on >> 8)
self.i2c.write8(self.__ALL_LED_OFF_L, off & 0xFF)
self.i2c.write8(self.__ALL_LED_OFF_H, off >> 8)

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examples/DCTest.py Normal file
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#!/usr/bin/python
#import Adafruit_MotorHAT, Adafruit_DCMotor, Adafruit_Stepper
from Adafruit_MotorHAT import Adafruit_MotorHAT, Adafruit_DCMotor, Adafruit_StepperMotor
import time
import atexit
# create a default object, no changes to I2C address or frequency
mh = Adafruit_MotorHAT(addr=0x61)
# recommended for auto-disabling motors on shutdown!
def turnOffMotors():
mh.getMotor(1).run(Adafruit_MotorHAT.RELEASE)
mh.getMotor(2).run(Adafruit_MotorHAT.RELEASE)
mh.getMotor(3).run(Adafruit_MotorHAT.RELEASE)
mh.getMotor(4).run(Adafruit_MotorHAT.RELEASE)
atexit.register(turnOffMotors)
################################# DC motor test!
myMotor = mh.getMotor(3)
# set the speed to start, from 0 (off) to 255 (max speed)
myMotor.setSpeed(150)
myMotor.run(Adafruit_MotorHAT.FORWARD);
# turn on motor
myMotor.run(Adafruit_MotorHAT.RELEASE);
while (True):
print "Forward! "
myMotor.run(Adafruit_MotorHAT.FORWARD)
print "\tSpeed up..."
for i in range(255):
myMotor.setSpeed(i)
time.sleep(0.01)
print "\tSlow down..."
for i in reversed(range(255)):
myMotor.setSpeed(i)
time.sleep(0.01)
print "Backward! "
myMotor.run(Adafruit_MotorHAT.BACKWARD)
print "\tSpeed up..."
for i in range(255):
myMotor.setSpeed(i)
time.sleep(0.01)
print "\tSlow down..."
for i in reversed(range(255)):
myMotor.setSpeed(i)
time.sleep(0.01)
print "Release"
myMotor.run(Adafruit_MotorHAT.RELEASE)
time.sleep(1.0)

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examples/DualStepperTest.py Normal file
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#!/usr/bin/python
from Adafruit_MotorHAT import Adafruit_MotorHAT, Adafruit_DCMotor, Adafruit_StepperMotor
import time
import atexit
import threading
import random
# create a default object, no changes to I2C address or frequency
mh = Adafruit_MotorHAT()
# create empty threads (these will hold the stepper 1 and 2 threads)
st1 = threading.Thread()
st2 = threading.Thread()
# recommended for auto-disabling motors on shutdown!
def turnOffMotors():
mh.getMotor(1).run(Adafruit_MotorHAT.RELEASE)
mh.getMotor(2).run(Adafruit_MotorHAT.RELEASE)
mh.getMotor(3).run(Adafruit_MotorHAT.RELEASE)
mh.getMotor(4).run(Adafruit_MotorHAT.RELEASE)
atexit.register(turnOffMotors)
myStepper1 = mh.getStepper(200, 1) # 200 steps/rev, motor port #1
myStepper2 = mh.getStepper(200, 2) # 200 steps/rev, motor port #1
myStepper1.setSpeed(60) # 30 RPM
myStepper2.setSpeed(60) # 30 RPM
stepstyles = [Adafruit_MotorHAT.SINGLE, Adafruit_MotorHAT.DOUBLE, Adafruit_MotorHAT.INTERLEAVE, Adafruit_MotorHAT.MICROSTEP]
def stepper_worker(stepper, numsteps, direction, style):
#print("Steppin!")
stepper.step(numsteps, direction, style)
#print("Done")
while (True):
if not st1.isAlive():
randomdir = random.randint(0, 1)
print("Stepper 1"),
if (randomdir == 0):
dir = Adafruit_MotorHAT.FORWARD
print("forward"),
else:
dir = Adafruit_MotorHAT.BACKWARD
print("backward"),
randomsteps = random.randint(10,50)
print("%d steps" % randomsteps)
st1 = threading.Thread(target=stepper_worker, args=(myStepper1, randomsteps, dir, stepstyles[random.randint(0,3)],))
st1.start()
if not st2.isAlive():
print("Stepper 2"),
randomdir = random.randint(0, 1)
if (randomdir == 0):
dir = Adafruit_MotorHAT.FORWARD
print("forward"),
else:
dir = Adafruit_MotorHAT.BACKWARD
print("backward"),
randomsteps = random.randint(10,50)
print("%d steps" % randomsteps)
st2 = threading.Thread(target=stepper_worker, args=(myStepper2, randomsteps, dir, stepstyles[random.randint(0,3)],))
st2.start()

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examples/StackingTest.py Normal file
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#!/usr/bin/python
from Adafruit_MotorHAT import Adafruit_MotorHAT, Adafruit_DCMotor, Adafruit_StepperMotor
import time
import atexit
import threading
import random
# bottom hat is default address 0x60
bottomhat = Adafruit_MotorHAT(addr=0x60)
# top hat has A0 jumper closed, so its address 0x61
tophat = Adafruit_MotorHAT(addr=0x61)
# create empty threads (these will hold the stepper 1, 2 & 3 threads)
stepperThreads = [threading.Thread(), threading.Thread(), threading.Thread()]
# recommended for auto-disabling motors on shutdown!
def turnOffMotors():
tophat.getMotor(1).run(Adafruit_MotorHAT.RELEASE)
tophat.getMotor(2).run(Adafruit_MotorHAT.RELEASE)
tophat.getMotor(3).run(Adafruit_MotorHAT.RELEASE)
tophat.getMotor(4).run(Adafruit_MotorHAT.RELEASE)
bottomhat.getMotor(1).run(Adafruit_MotorHAT.RELEASE)
bottomhat.getMotor(2).run(Adafruit_MotorHAT.RELEASE)
bottomhat.getMotor(3).run(Adafruit_MotorHAT.RELEASE)
bottomhat.getMotor(4).run(Adafruit_MotorHAT.RELEASE)
atexit.register(turnOffMotors)
myStepper1 = bottomhat.getStepper(200, 1) # 200 steps/rev, motor port #1
myStepper2 = bottomhat.getStepper(200, 2) # 200 steps/rev, motor port #2
myStepper3 = tophat.getStepper(200, 1) # 200 steps/rev, motor port #1
myStepper1.setSpeed(60) # 60 RPM
myStepper2.setSpeed(30) # 30 RPM
myStepper3.setSpeed(15) # 15 RPM
# get a DC motor!
myMotor = tophat.getMotor(3)
# set the speed to start, from 0 (off) to 255 (max speed)
myMotor.setSpeed(150)
# turn on motor
myMotor.run(Adafruit_MotorHAT.FORWARD);
stepstyles = [Adafruit_MotorHAT.SINGLE, Adafruit_MotorHAT.DOUBLE, Adafruit_MotorHAT.INTERLEAVE]
steppers = [myStepper1, myStepper2, myStepper3]
def stepper_worker(stepper, numsteps, direction, style):
#print("Steppin!")
stepper.step(numsteps, direction, style)
#print("Done")
while (True):
for i in range(3):
if not stepperThreads[i].isAlive():
randomdir = random.randint(0, 1)
print("Stepper %d" % i),
if (randomdir == 0):
dir = Adafruit_MotorHAT.FORWARD
print("forward"),
else:
dir = Adafruit_MotorHAT.BACKWARD
print("backward"),
randomsteps = random.randint(10,50)
print("%d steps" % randomsteps)
stepperThreads[i] = threading.Thread(target=stepper_worker, args=(steppers[i], randomsteps, dir, stepstyles[random.randint(0,len(stepstyles)-1)],))
stepperThreads[i].start()
# also, lets switch around the DC motor!
myMotor.setSpeed(random.randint(0,255)) # random speed
#myMotor.run(random.randint(0,1)) # random forward/back

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examples/StepperTest.py Normal file
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#!/usr/bin/python
#import Adafruit_MotorHAT, Adafruit_DCMotor, Adafruit_Stepper
from Adafruit_MotorHAT import Adafruit_MotorHAT, Adafruit_DCMotor, Adafruit_StepperMotor
import time
import atexit
# create a default object, no changes to I2C address or frequency
mh = Adafruit_MotorHAT()
# recommended for auto-disabling motors on shutdown!
def turnOffMotors():
mh.getMotor(1).run(Adafruit_MotorHAT.RELEASE)
mh.getMotor(2).run(Adafruit_MotorHAT.RELEASE)
mh.getMotor(3).run(Adafruit_MotorHAT.RELEASE)
mh.getMotor(4).run(Adafruit_MotorHAT.RELEASE)
atexit.register(turnOffMotors)
myStepper = mh.getStepper(200, 2) # 200 steps/rev, motor port #1
myStepper.setSpeed(30) # 30 RPM
while (True):
print("Single coil steps")
myStepper.step(100, Adafruit_MotorHAT.FORWARD, Adafruit_MotorHAT.SINGLE)
myStepper.step(100, Adafruit_MotorHAT.BACKWARD, Adafruit_MotorHAT.SINGLE)
print("Double coil steps")
myStepper.step(100, Adafruit_MotorHAT.FORWARD, Adafruit_MotorHAT.DOUBLE)
myStepper.step(100, Adafruit_MotorHAT.BACKWARD, Adafruit_MotorHAT.DOUBLE)
print("Interleaved coil steps")
myStepper.step(100, Adafruit_MotorHAT.FORWARD, Adafruit_MotorHAT.INTERLEAVE)
myStepper.step(100, Adafruit_MotorHAT.BACKWARD, Adafruit_MotorHAT.INTERLEAVE)
print("Microsteps")
myStepper.step(100, Adafruit_MotorHAT.FORWARD, Adafruit_MotorHAT.MICROSTEP)
myStepper.step(100, Adafruit_MotorHAT.BACKWARD, Adafruit_MotorHAT.MICROSTEP)

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ez_setup.py Normal file
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#!/usr/bin/env python
"""Bootstrap setuptools installation
To use setuptools in your package's setup.py, include this
file in the same directory and add this to the top of your setup.py::
from ez_setup import use_setuptools
use_setuptools()
To require a specific version of setuptools, set a download
mirror, or use an alternate download directory, simply supply
the appropriate options to ``use_setuptools()``.
This file can also be run as a script to install or upgrade setuptools.
"""
import os
import shutil
import sys
import tempfile
import zipfile
import optparse
import subprocess
import platform
import textwrap
import contextlib
from distutils import log
try:
from site import USER_SITE
except ImportError:
USER_SITE = None
DEFAULT_VERSION = "3.5.1"
DEFAULT_URL = "https://pypi.python.org/packages/source/s/setuptools/"
def _python_cmd(*args):
"""
Return True if the command succeeded.
"""
args = (sys.executable,) + args
return subprocess.call(args) == 0
def _install(archive_filename, install_args=()):
with archive_context(archive_filename):
# installing
log.warn('Installing Setuptools')
if not _python_cmd('setup.py', 'install', *install_args):
log.warn('Something went wrong during the installation.')
log.warn('See the error message above.')
# exitcode will be 2
return 2
def _build_egg(egg, archive_filename, to_dir):
with archive_context(archive_filename):
# building an egg
log.warn('Building a Setuptools egg in %s', to_dir)
_python_cmd('setup.py', '-q', 'bdist_egg', '--dist-dir', to_dir)
# returning the result
log.warn(egg)
if not os.path.exists(egg):
raise IOError('Could not build the egg.')
def get_zip_class():
"""
Supplement ZipFile class to support context manager for Python 2.6
"""
class ContextualZipFile(zipfile.ZipFile):
def __enter__(self):
return self
def __exit__(self, type, value, traceback):
self.close
return zipfile.ZipFile if hasattr(zipfile.ZipFile, '__exit__') else \
ContextualZipFile
@contextlib.contextmanager
def archive_context(filename):
# extracting the archive
tmpdir = tempfile.mkdtemp()
log.warn('Extracting in %s', tmpdir)
old_wd = os.getcwd()
try:
os.chdir(tmpdir)
with get_zip_class()(filename) as archive:
archive.extractall()
# going in the directory
subdir = os.path.join(tmpdir, os.listdir(tmpdir)[0])
os.chdir(subdir)
log.warn('Now working in %s', subdir)
yield
finally:
os.chdir(old_wd)
shutil.rmtree(tmpdir)
def _do_download(version, download_base, to_dir, download_delay):
egg = os.path.join(to_dir, 'setuptools-%s-py%d.%d.egg'
% (version, sys.version_info[0], sys.version_info[1]))
if not os.path.exists(egg):
archive = download_setuptools(version, download_base,
to_dir, download_delay)
_build_egg(egg, archive, to_dir)
sys.path.insert(0, egg)
# Remove previously-imported pkg_resources if present (see
# https://bitbucket.org/pypa/setuptools/pull-request/7/ for details).
if 'pkg_resources' in sys.modules:
del sys.modules['pkg_resources']
import setuptools
setuptools.bootstrap_install_from = egg
def use_setuptools(version=DEFAULT_VERSION, download_base=DEFAULT_URL,
to_dir=os.curdir, download_delay=15):
to_dir = os.path.abspath(to_dir)
rep_modules = 'pkg_resources', 'setuptools'
imported = set(sys.modules).intersection(rep_modules)
try:
import pkg_resources
except ImportError:
return _do_download(version, download_base, to_dir, download_delay)
try:
pkg_resources.require("setuptools>=" + version)
return
except pkg_resources.DistributionNotFound:
return _do_download(version, download_base, to_dir, download_delay)
except pkg_resources.VersionConflict as VC_err:
if imported:
msg = textwrap.dedent("""
The required version of setuptools (>={version}) is not available,
and can't be installed while this script is running. Please
install a more recent version first, using
'easy_install -U setuptools'.
(Currently using {VC_err.args[0]!r})
""").format(VC_err=VC_err, version=version)
sys.stderr.write(msg)
sys.exit(2)
# otherwise, reload ok
del pkg_resources, sys.modules['pkg_resources']
return _do_download(version, download_base, to_dir, download_delay)
def _clean_check(cmd, target):
"""
Run the command to download target. If the command fails, clean up before
re-raising the error.
"""
try:
subprocess.check_call(cmd)
except subprocess.CalledProcessError:
if os.access(target, os.F_OK):
os.unlink(target)
raise
def download_file_powershell(url, target):
"""
Download the file at url to target using Powershell (which will validate
trust). Raise an exception if the command cannot complete.
"""
target = os.path.abspath(target)
cmd = [
'powershell',
'-Command',
"(new-object System.Net.WebClient).DownloadFile(%(url)r, %(target)r)" % vars(),
]
_clean_check(cmd, target)
def has_powershell():
if platform.system() != 'Windows':
return False
cmd = ['powershell', '-Command', 'echo test']
devnull = open(os.path.devnull, 'wb')
try:
try:
subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
except Exception:
return False
finally:
devnull.close()
return True
download_file_powershell.viable = has_powershell
def download_file_curl(url, target):
cmd = ['curl', url, '--silent', '--output', target]
_clean_check(cmd, target)
def has_curl():
cmd = ['curl', '--version']
devnull = open(os.path.devnull, 'wb')
try:
try:
subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
except Exception:
return False
finally:
devnull.close()
return True
download_file_curl.viable = has_curl
def download_file_wget(url, target):
cmd = ['wget', url, '--quiet', '--output-document', target]
_clean_check(cmd, target)
def has_wget():
cmd = ['wget', '--version']
devnull = open(os.path.devnull, 'wb')
try:
try:
subprocess.check_call(cmd, stdout=devnull, stderr=devnull)
except Exception:
return False
finally:
devnull.close()
return True
download_file_wget.viable = has_wget
def download_file_insecure(url, target):
"""
Use Python to download the file, even though it cannot authenticate the
connection.
"""
try:
from urllib.request import urlopen
except ImportError:
from urllib2 import urlopen
src = dst = None
try:
src = urlopen(url)
# Read/write all in one block, so we don't create a corrupt file
# if the download is interrupted.
data = src.read()
dst = open(target, "wb")
dst.write(data)
finally:
if src:
src.close()
if dst:
dst.close()
download_file_insecure.viable = lambda: True
def get_best_downloader():
downloaders = [
download_file_powershell,
download_file_curl,
download_file_wget,
download_file_insecure,
]
for dl in downloaders:
if dl.viable():
return dl
def download_setuptools(version=DEFAULT_VERSION, download_base=DEFAULT_URL,
to_dir=os.curdir, delay=15, downloader_factory=get_best_downloader):
"""
Download setuptools from a specified location and return its filename
`version` should be a valid setuptools version number that is available
as an egg for download under the `download_base` URL (which should end
with a '/'). `to_dir` is the directory where the egg will be downloaded.
`delay` is the number of seconds to pause before an actual download
attempt.
``downloader_factory`` should be a function taking no arguments and
returning a function for downloading a URL to a target.
"""
# making sure we use the absolute path
to_dir = os.path.abspath(to_dir)
zip_name = "setuptools-%s.zip" % version
url = download_base + zip_name
saveto = os.path.join(to_dir, zip_name)
if not os.path.exists(saveto): # Avoid repeated downloads
log.warn("Downloading %s", url)
downloader = downloader_factory()
downloader(url, saveto)
return os.path.realpath(saveto)
def _build_install_args(options):
"""
Build the arguments to 'python setup.py install' on the setuptools package
"""
return ['--user'] if options.user_install else []
def _parse_args():
"""
Parse the command line for options
"""
parser = optparse.OptionParser()
parser.add_option(
'--user', dest='user_install', action='store_true', default=False,
help='install in user site package (requires Python 2.6 or later)')
parser.add_option(
'--download-base', dest='download_base', metavar="URL",
default=DEFAULT_URL,
help='alternative URL from where to download the setuptools package')
parser.add_option(
'--insecure', dest='downloader_factory', action='store_const',
const=lambda: download_file_insecure, default=get_best_downloader,
help='Use internal, non-validating downloader'
)
parser.add_option(
'--version', help="Specify which version to download",
default=DEFAULT_VERSION,
)
options, args = parser.parse_args()
# positional arguments are ignored
return options
def main():
"""Install or upgrade setuptools and EasyInstall"""
options = _parse_args()
archive = download_setuptools(
version=options.version,
download_base=options.download_base,
downloader_factory=options.downloader_factory,
)
return _install(archive, _build_install_args(options))
if __name__ == '__main__':
sys.exit(main())

14
setup.py Normal file
View File

@@ -0,0 +1,14 @@
from ez_setup import use_setuptools
use_setuptools()
from setuptools import setup, find_packages
setup(name = 'Adafruit_MotorHAT',
version = '1.0.0',
author = 'Limor Fried',
author_email = 'support@adafruit.com',
description = 'Library for Adafruit Motor HAT',
license = 'MIT',
url = 'https://github.com/adafruit/Adafruit_Python_MotorHAT/',
dependency_links = ['https://github.com/adafruit/Adafruit_Python_GPIO/tarball/master#egg=Adafruit-GPIO-0.7'],
install_requires = ['Adafruit-GPIO>=0.7'],
packages = find_packages())