def LaserscannerResource(*args,
laser0,
laser1,
photodiode,
pwm,
enable,
number=None,
conn=None,
attrs=None):
""" Resource for laser scanner
The enable pin is currently activated via the Linux host
I/O signals:
O: laser0 -- laser channel 0
O: laser1 -- laser channel 1
I: photodiode -- photodiode used to measure position of laser
O: pwm -- polygon is rotated with pwm
O: en -- on low polygon motor is enabled (depends on type)
"""
io = []
io.append(
Subsignal("laser0", Pins(laser0, dir="o", conn=conn, assert_width=1)))
io.append(
Subsignal("laser1", Pins(laser1, dir="o", conn=conn, assert_width=1)))
io.append(
Subsignal("photodiode",
Pins(photodiode, dir="i", conn=conn, assert_width=1)))
io.append(Subsignal("pwm", Pins(pwm, dir="o", conn=conn, assert_width=1)))
io.append(
Subsignal("en", PinsN(enable, dir="o", conn=conn, assert_width=1)))
if attrs is not None:
io.append(attrs)
return Resource.family(*args, number, default_name="laserscanner", ios=io)
def Bus(*args, pins, invert=False, conn=None, attrs=None, default_name, dir):
"""Adds a bus resource. Add to resources using *Bus(...)."""
assert isinstance(pins, (str, list, dict))
if isinstance(pins, str):
pins = pins.split()
if isinstance(pins, list):
pins = dict(enumerate(pins))
resources = []
for number, pin in pins.items():
ios = [Pins(pin, dir=dir, invert=invert, conn=conn)]
if attrs is not None:
ios.append(attrs)
resources.append(
Resource.family(*args, number, default_name=default_name, ios=ios))
return resources
def StepperResource(*args,
step,
direction,
limit,
number=None,
conn=None,
attrs=None):
""" The enable pin is currently activated via the Linux host
I/O signals:
O: step -- pin for step pulse
O: dir -- rotating direction of motor
I: limit -- limit switch to detect end movement
"""
io = []
io.append(Subsignal("step", Pins(step, dir="o", conn=conn,
assert_width=1)))
io.append(
Subsignal("dir", Pins(direction, dir="o", conn=conn, assert_width=1)))
io.append(
Subsignal("limit", Pins(limit, dir="i", conn=conn, assert_width=1)))
if attrs is not None:
io.append(attrs)
return Resource.family(*args, number, default_name="stepper", ios=io)