def download(self, partial_bit=None): if partial_bit is not None: decoupler = GPIO(int(partial_bit[len(self.PARTIAL_BITSTREAM_PATH) + 3]) + GPIO.get_gpio_base(), 'out') decoupler.write(1) super().download(partial_bit) if partial_bit is not None: decoupler.write(0)
def test_gpio():
""" Test whether the GPIO class is working properly.
Note
----
The gpio_min is the GPIO base pin number + minimum user pin
The gpio_max is the smallest power of 2 greater than the GPIO base.
"""
# Find the GPIO base pin
for root, dirs, files in os.walk('/sys/class/gpio'):
for name in dirs:
if 'gpiochip' in name:
index = int(''.join(x for x in name if x.isdigit()))
base = GPIO.get_gpio_base()
gpio_min = base + general_const.GPIO_MIN_USER_PIN
gpio_max = 2**(math.ceil(math.log(gpio_min, 2)))
for index in range(gpio_min, gpio_max):
g = GPIO(index, 'in')
with pytest.raises(Exception) as error_infor:
# GPIO type is 'in'. Hence g.write() is illegal.
# Test will pass if exception is raised.
g.write()
del g
g = GPIO(index, 'out')
with pytest.raises(Exception) as error_infor:
# GPIO type is 'out'. Hence g.read() is illegal.
# Test will pass if exception is raised.
g.read()
with pytest.raises(Exception) as error_infor:
# write() only accepts integer 0 or 1 (not 'str').
# Test will pass if exception is raised.
g.write('1')
del g
def test_gpio():
""" Test whether the GPIO class is working properly.
Note
----
The gpio_min is the GPIO base pin number + minimum user pin
The gpio_max is the smallest power of 2 greater than the GPIO base.
"""
# Find the GPIO base pin
for root, dirs, files in os.walk('/sys/class/gpio'):
for name in dirs:
if 'gpiochip' in name:
index = int(''.join(x for x in name if x.isdigit()))
base = GPIO.get_gpio_base()
gpio_min = base + general_const.GPIO_MIN_USER_PIN
gpio_max = 2**(math.ceil(math.log(gpio_min, 2)))
for index in range(gpio_min, gpio_max):
g = GPIO(index, 'in')
with pytest.raises(Exception) as error_infor:
# GPIO type is 'in'. Hence g.write() is illegal.
# Test will pass if exception is raised.
g.write()
g = GPIO(index, 'out')
with pytest.raises(Exception) as error_infor:
# GPIO type is 'out'. Hence g.read() is illegal.
# Test will pass if exception is raised.
g.read()
with pytest.raises(Exception) as error_infor:
# write() only accepts integer 0 or 1 (not 'str').
# Test will pass if exception is raised.
g.write('1')
del g
from pynq import GPIO
import time
import smbus
# This will minipulate a LED Ring R Click Board in Slot 1
# of the Ultra96 mikro click mezzanine board
# Obtain the reset pin of slot 1 of the Ultra96 mikro mezzanine board
# PS pin MIO37 is connected to slot 1 RST
# PS pin MIO40 is connected to slot 2 RST
# Linux pin number to Xilinx pin numbers are weird and have a large
# base number than can change between different releases of Linux
# The pynq base fcn will help here! base for 2018.2 was 338
mio_linux_number = GPIO.get_gpio_base() + 37
# EMIOs start after MIO and there
# is fixed offset for ZYNQ (54) and ZYNQ US+ (78)
# emio_linux_number = GPIO.get_gpio_pin(emio_offset)
rst_pin = GPIO(mio_linux_number, 'out')
# Reset is usually active LOW
rst_pin.write(1)
time.sleep(.1)
rst_pin.write(0)
time.sleep(.1)
rst_pin.write(1)
print("Start I2C Test\n")
def pr_download(self, partial_region, partial_bit, dtbo_path=None):
decoupler = GPIO(int(partial_region[3]) + GPIO.get_gpio_base(), 'out')
decoupler.write(1)
super().pr_download(partial_region, partial_bit, dtbo_path)
decoupler.write(0)
