How to use the pfio.digital_write function in pfio
To help you get started, we’ve selected a few pfio examples, based on popular ways it is used in public projects.
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thomasmacpherson / piface / python / piface / pfion.py View on Github 
sock.sendto(p.for_network(), sender)
elif packet.command == READ_OUT_CMD:
output_bitp = pfio.read_output()
p = PfionPacket(READ_OUT_ACK)
p.bit_pattern = output_bitp
sock.sendto(p.for_network(), sender)
elif packet.command == READ_IN_CMD:
input_bitp = pfio.read_input()
p = PfionPacket(READ_IN_ACK)
p.bit_pattern = input_bitp
sock.sendto(p.for_network(), sender)
elif packet.command == DIGITAL_WRITE_CMD:
pfio.digital_write(packet.pin_number, packet.pin_value)
p = PfionPacket(DIGITAL_WRITE_ACK)
sock.sendto(p.for_network(), sender)
elif packet.command == DIGITAL_READ_CMD:
pin_value = pfio.digital_read(packet.pin_number)
p = PfionPacket(DIGITAL_READ_ACK)
p.pin_number = packet.pin_number
p.pin_value = pin_value
sock.sendto(p.for_network(), sender)
elif callback != None:
callback(packet, sender)
elif verbose:
print "Unkown packet command (%d). Ignoring." % packet.commanddef shift_out(data_pin, latch_pin, clock_pin, edian, data):
delay()
print "Latch pin low"
pfio.digital_write(latch_pin,0)
delay()
print "clock pin low"
pfio.digital_write(clock_pin, 0)
delay()
data_bits = str(bin(data)[2:].zfill(8))
if edian:
for bit in data_bits:
bit = int(bit)
print bit
pfio.digital_write(data_pin, bit)
delay()
pulse_clock(clock_pin)
else:
for bit in reversed(data_bits):def pulse_clock(clock_pin):
print "clock high"
pfio.digital_write(clock_pin, 1)
delay()
print "clock low"
pfio.digital_write(clock_pin, 0)
delay()def pulse_clock(clock_pin):
print "clock high"
pfio.digital_write(clock_pin, 1)
delay()
print "clock low"
pfio.digital_write(clock_pin, 0)
delay()def shift_out(data_pin, latch_pin, clock_pin, edian, data):
delay()
print "Latch pin low"
pfio.digital_write(latch_pin,0)
delay()
print "clock pin low"
pfio.digital_write(clock_pin, 0)
delay()
data_bits = str(bin(data)[2:].zfill(8))
if edian:
for bit in data_bits:
bit = int(bit)
print bit
pfio.digital_write(data_pin, bit)
delay()
pulse_clock(clock_pin)print bit
pfio.digital_write(data_pin, bit)
delay()
pulse_clock(clock_pin)
else:
for bit in reversed(data_bits):
bit = int(bit)
print bit
pfio.digital_write(data_pin, bit)
delay()
pulse_clock(clock_pin)
delay()
print "latch pin high"
pfio.digital_write(latch_pin,1)if edian:
for bit in data_bits:
bit = int(bit)
print bit
pfio.digital_write(data_pin, bit)
delay()
pulse_clock(clock_pin)
else:
for bit in reversed(data_bits):
bit = int(bit)
print bit
pfio.digital_write(data_pin, bit)
delay()
pulse_clock(clock_pin)
delay()
print "latch pin high"
pfio.digital_write(latch_pin,1)
