Requires python smbus to be installed with: sudo apt-get install python3-smbus
run with: sudo python3 demo-iowrite.py
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This example uses the write_pin and writeBank methods to switch the pins
on and off on the I/O bus.
Initialise the IO class and create an instance called io.
"""
io = IO()
# We will write to the pins 9 to 16 so set port 1 to be outputs turn off
# the pins
io.set_port_direction(1, 0x00)
io.write_port(1, 0x00)
while True:
# count to 255 and display the value on pins 9 to 16 in binary format
for x in range(0, 255):
time.sleep(0.05)
io.write_port(1, x)
# turn off all of the pins on bank 1
io.write_port(1, 0x00)
# now turn on all of the leds in turn by writing to one pin at a time
io.write_pin(9, 1)
time.sleep(0.1)
io.write_pin(10, 1)
This example uses the write_pin and writeBank methods to switch the pins
on and off on the I/O bus.
Initialise the IO class and create an instance called io.
"""
i2c_helper = ABEHelpers()
bus = i2c_helper.get_smbus()
io = IO(bus)
# We will write to the pins 9 to 16 so set port 1 to be outputs turn off
# the pins
io.set_port_direction(1, 0x00)
io.write_port(1, 0x00)
while True:
# count to 255 and display the value on pins 9 to 16 in binary format
for x in range(0, 255):
time.sleep(0.05)
io.write_port(1, x)
# turn off all of the pins on bank 1
io.write_port(1, 0x00)
# now turn on all of the leds in turn by writing to one pin at a time
io.write_pin(9, 1)
time.sleep(0.1)
io.write_pin(10, 1)
