def wait_response (self):
link = self.link
for buf in link.dump_rx_buffer( ):
resp = Packet.fromBuffer(buf)
if self.responds_to(resp):
print "READ"
print lib.hexdump(buf)
return resp
def __init__ (self, com, state):
# print com, com.__name__
self.name = com.__name__.split('.').pop( )
#print com
self.com = com
self.code = com.code
self.state = state
self.resp = Packet.fromCommand(com, serial=state.serial, crc=0x00)
def ack (self):
null = bytearray([0x00])
pkt = Packet.fromCommand(self.command, payload=null, serial=self.command.serial)
pkt = pkt._replace(payload=null, op=0x06)
buf = pkt.assemble( )
print "ACK tx", str(buf).encode('hex')
encoded = FourBySix.encode(buf)
self.link.write(encoded)
self.link.triggerTX( )
def wait_for_ack (self):
link = self.link
# while not self.done( ):
for buf in link.dump_rx_buffer( ):
print "wait_for_ack"
resp = Packet.fromBuffer(buf)
if self.responds_to(resp):
print lib.hexdump(buf)
if resp.op == 0x06:
# self.unframe(resp)
print "found valid ACK"
return resp
def prelude (self, command):
link = self.link
self.expected = command.bytesPerRecord * command.maxRecords
self.command = command
# payload = bytearray([len(command.params)]) + bytearray(command.params)
payload = bytearray([0])
self.pkt = Packet.fromCommand(command, payload=payload, serial=command.serial)
self.pkt = self.pkt.update(payload)
buf = self.pkt.assemble( )
print "sending", str(buf).encode('hex')
encoded = FourBySix.encode(buf)
self.send(encoded)
print "searching response for ", command, 'done? ', self.done( )
def send_params (self):
command = self.command
params = self.command.params
payload = bytearray([len(params)]) + bytearray(params)
missing = [ ]
missing = bytearray([0x00]) * (64 - len(params))
payload = payload + missing
pkt = Packet.fromCommand(command, payload=payload, serial=command.serial)
pkt = pkt.update(payload)
buf = pkt.assemble( )
print "sending PARAMS", str(buf).encode('hex')
encoded = FourBySix.encode(buf)
self.link.write(encoded)
self.link.triggerTX( )
# self.link.write(encoded)
# self.link.triggerTX( )
self.sent_params = True
