class LEDTest():
"""Test for LED on FT232H board"""
def __init__(self):
self._gpio = GpioController()
self._state = 0 # SW cache of the GPIO output lines
def pins(self):
print(self._gpio.direction)
def open(self, out_pins):
"""Open a GPIO connection, defining which pins are configured as
output and input"""
out_pins &= 0xFF
url = environ.get('FTDI_DEVICE', 'ftdi://ftdi:232h/1')
self._gpio.open_from_url(url, direction=out_pins)
def close(self):
"""Close the GPIO connection"""
self._gpio.close()
def get_gpio(self, line):
"""Retrieve the level of a GPIO input pin
:param line: specify which GPIO to read out.
:return: True for high-level, False for low-level
"""
value = self._gpio.read_port()
print(value)
return bool(value & (1 << line))
def set_gpio(self, line, on):
"""Set the level of a GPIO ouput pin.
:param line: specify which GPIO to madify.
:param on: a boolean value, True for high-level, False for low-level
"""
if on:
state = self._state | (1 << line)
else:
state = self._state & ~(1 << line)
self._commit_state(state)
def _commit_state(self, state):
"""Update GPIO outputs
"""
self._gpio.write_port(state)
# do not update cache on error
self._state = state
def test(self):
"""Check simple GPIO write and read sequence."""
gpio = GpioController()
# access to the virtual GPIO port
out_pins = 0xAA
gpio.configure('ftdi://:232h/1', direction=out_pins)
bus, address, iface = gpio.ftdi.usb_path
self.assertEqual((bus, address, iface), (4, 5, 0))
vftdi = self.loader.get_virtual_ftdi(bus, address)
gpio.write_port(0xF3)
self.assertEqual(vftdi.gpio, 0xAA & 0xF3)
vftdi.gpio = 0x0c
vio = gpio.read_port()
self.assertEqual(vio, (0xAA & 0xF3) | (~0xAA & 0x0c))
gpio.close()
class GpioTest(object):
"""
"""
def __init__(self):
self._gpio = GpioController()
self._state = 0 # SW cache of the GPIO output lines
def open(self, out_pins):
"""Open a GPIO connection, defining which pins are configured as
output and input"""
out_pins &= 0xFF
self._gpio.open(vendor=0x403, product=0x6011, interface=1,
direction=out_pins)
def close(self):
"""Close the GPIO connection"""
self._gpio.close()
def set_gpio(self, line, on):
"""Set the level of a GPIO ouput pin.
:param line: specify which GPIO to madify.
:param on: a boolean value, True for high-level, False for low-level
"""
if on:
state = self._state | (1 << line)
else:
state = self._state & ~(1 << line)
self._commit_state(state)
def get_gpio(self, line):
"""Retrieve the level of a GPIO input pin
:param line: specify which GPIO to read out.
:return: True for high-level, False for low-level
"""
value = self._gpio.read_port()
return bool(value & (1 << line))
def _commit_state(self, state):
"""Update GPIO outputs
"""
self._gpio.write_port(state)
# do not update cache on error
self._state = state
def _test_gpio(self):
"""Check simple GPIO write and read sequence."""
with open('pyftdi/tests/resources/ft232h.yaml', 'rb') as yfp:
self.loader.load(yfp)
gpio = GpioController()
# access to the virtual GPIO port
out_pins = 0xAA
gpio.configure('ftdi://:232h/1', direction=out_pins)
bus, address, iface = gpio.ftdi.usb_path
self.assertEqual((bus, address, iface), (4, 5, 0))
vftdi = self.loader.get_virtual_ftdi(bus, address)
vport = vftdi.get_port(1)
gpio.write_port(0xF3)
self.assertEqual(vport.gpio, 0xAA & 0xF3)
vport.gpio = 0x0c
vio = gpio.read_port()
self.assertEqual(vio, (0xAA & 0xF3) | (~0xAA & 0x0c))
gpio.close()
