def read_output():
"""Returns the values of the output pins"""
global rpi_emulator
data = __read_pins(rpi_emulator.emu_screen.output_pins)
global pfio_connect
if pfio_connect:
data |= pfio.read_output()
return data
def start_pfio_server(callback=None, verbose=False, port=DEFAULT_PORT):
"""Starts listening for pfio packets over the network"""
pfio.init()
try:
# this returns the loopback ip on the RPi :-(
#hostname = socket.gethostname()
###################################################
# this is pretty hacky, if anyone can find a better
# solution, then please change this!
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.connect(("8.8.8.8", 80)) # try to connect to google's dns
hostname = s.getsockname()[0] # get this device's hostname
s.close()
# blergh, nasty stuff
###################################################
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.bind((hostname, port))
except socket.error as e:
print "There was an error setting up the server socket!"
print e
return
else:
if verbose:
print "Listening at %s on port %d" % (hostname, port)
while True:
# get the packet
packet, sender = sock.recvfrom(BUFFER_SIZE)
if verbose:
print "Recieved packet from", sender
# make it something sensible
packet = PfionPacket().from_network(packet)
if packet.command == WRITE_OUT_CMD:
pfio.write_output(packet.bit_pattern)
p = PfionPacket(WRITE_OUT_ACK)
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.command
def start_pfio_server(callback=None, verbose=False, port=DEFAULT_PORT):
"""Starts listening for pfio packets over the network"""
pfio.init()
try:
# this returns the loopback ip on the RPi :-(
#hostname = socket.gethostname()
###################################################
# this is pretty hacky, if anyone can find a better
# solution, then please change this!
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.connect(("8.8.8.8", 80)) # try to connect to google's dns
hostname = s.getsockname()[0] # get this device's hostname
s.close()
# blergh, nasty stuff
###################################################
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.bind((hostname, port))
except socket.error as e:
print "There was an error setting up the server socket!"
print e
return
else:
if verbose:
print "Listening at %s on port %d" % (hostname, port)
while True:
# get the packet
packet, sender = sock.recvfrom(BUFFER_SIZE)
if verbose:
print "Recieved packet from", sender
# make it something sensible
packet = PfionPacket().from_network(packet)
if packet.command == WRITE_OUT_CMD:
pfio.write_output(packet.bit_pattern)
p = PfionPacket(WRITE_OUT_ACK)
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.command