def open(self):
self._dev = d2xx.openEx(self._real_serial_number)
# Recommended setup from Thorlabs APT Programming Guide
self._dev.setBaudRate(d2xx.BAUD_115200)
self._dev.setDataCharacteristics(d2xx.BITS_8, d2xx.STOP_BITS_1,
d2xx.PARITY_NONE)
time.sleep(50e-3) # Wait 50 ms before and after purge
self._dev.purge() # Clear I/O queue
time.sleep(50e-3)
self._dev.resetDevice()
self._dev.setRts() # Assert the request-to-send line
def open(self):
self._dev = d2xx.openEx(self._real_serial_number)
# Recommended setup from Thorlabs APT Programming Guide
self._dev.setBaudRate(d2xx.BAUD_115200)
self._dev.setDataCharacteristics(d2xx.BITS_8, d2xx.STOP_BITS_1,
d2xx.PARITY_NONE)
time.sleep(50e-3) # Wait 50 ms before and after purge
self._dev.purge() # Clear I/O queue
time.sleep(50e-3)
self._dev.resetDevice()
self._dev.setRts() # Assert the request-to-send line
def openBySerialNumber(serialNumber,
lowByteValue=MASK.SPI_S,
lowByteDirection=MASK.SPI_O):
return Mpsse(d2xx.openEx(serialNumber, d2xx.OPEN_BY_SERIAL_NUMBER),
lowByteValue, lowByteDirection)
def openBySerialNumber(serialNumber,
lowByteValue = MASK.SPI_S,
lowByteDirection = MASK.SPI_O):
return Mpsse(d2xx.openEx(serialNumber, d2xx.OPEN_BY_SERIAL_NUMBER),
lowByteValue, lowByteDirection)
def __init__(self, SN, device_type=None):
print('Opening device %s:' % (str(SN)))
self._ready = False
self._debug = False
self.port = d2xx.openEx(str(SN))
self.info = self.port.getDeviceInfo()
self.port.setTimeouts(1000, 1000)
self.port.setBaudRate(d2xx.BAUD_115200)
self.port.setDataCharacteristics(d2xx.BITS_8, d2xx.STOP_BITS_1,
d2xx.PARITY_NONE)
time.sleep(0.05)
self.port.purge(d2xx.PURGE_RX | d2xx.PURGE_TX)
time.sleep(0.05)
self.port.setFlowControl(d2xx.FLOW_RTS_CTS, 0, 0)
self.port.setRts()
self.TXstack = []
self.write_lock = threading.Lock()
self.RXstack = []
self.read_lock = threading.Lock()
self._events = {}
self._return_codes = {}
self._channels = {}
self.require_update = False
self.device_type = device_type
if self.device_type in APT_messages.return_codes and self.device_type in APT_messages.channels:
self._channels = dict(
zip(APT_messages.channels[self.device_type],
range(len(APT_messages.channels[self.device_type]))))
self._channel_lookup = {v: k for k, v in self._channels.items()}
self._return_codes = APT_messages.return_codes[self.device_type]
for request_code in [
self._return_codes[key] for key in self._return_codes
]:
for chan in self._channels:
self.__create_event(request_code, chan)
class data_thread(threading.Thread):
def __init__(self, device):
threading.Thread.__init__(self)
self.device = device
self.abort_lock = threading.Lock()
self.update_time = 0
def run(self):
while True:
if not self.abort_lock.acquire(False):
break
start_time = time.time()
time.sleep(0.001)
if len(self.device.TXstack) > 0:
try:
self.device.write_lock.acquire(True)
message = self.device.TXstack.pop()
self.device.write_lock.release()
TXchunk = APT_messages.encode_header(
message['header'])
if 'data' in message:
data_dict = APT_messages.data_type[
message['header']['code']]
TXchunk += struct.pack(
data_dict['format'], *[
message['data'].get(key, 0)
for key in data_dict['parameters']
])
self.device.port.write(TXchunk)
except Exception as ex:
if self.device._debug:
print(
'(S/N %s) Error writing data to device: %s'
% (self.device.info['serial'], ex))
break
time.sleep(0.001)
if self.device.port.getStatus()[0]:
try:
message = {}
RXchunk = self.device.port.read(6)
#print('RX chunk: %s' % RXchunk.encode('hex'))
message['header'] = APT_messages.decode_header(
RXchunk)
if message['header']['data_follows'] == True:
message['data'] = {}
data = self.device.port.read(
message['header']['length'])
#print(' - Data: %s' % data)
data_dict = APT_messages.data_type.get(
message['header']['code'], None)
if data_dict is not None:
data_stripped = struct.unpack(
data_dict['format'],
data[:struct.
calcsize(data_dict['format'])])
for n, key in enumerate(
data_dict['parameters']):
if key is None:
continue
message['data'][key] = data_stripped[n]
else:
message['data']['raw'] = data
self.device.read_lock.acquire(True)
self.device.RXstack.append(message)
self.device.read_lock.release()
except Exception as ex:
if self.device._debug:
print(
'(S/N %s) Error reading data from device: %s'
% (self.device.info['serial'], ex))
break
self.update_time = time.time() - start_time
self.abort_lock.release()
self.abort_lock.release()
print(' Thread stopped.')
return
def abort(self):
self.abort_lock.acquire(True)
class processing_thread(threading.Thread):
def __init__(self, device):
threading.Thread.__init__(self)
self.device = device
self.abort_lock = threading.Lock()
def run(self):
# DO NOT FORGET TO SET THE DEVICE TO READY
while not self.device._ready:
pass
while True:
if not self.abort_lock.acquire(False):
break
time.sleep(0.001)
if len(self.device.RXstack) > 0:
self.device.read_lock.acquire(True)
message = self.device.RXstack.pop()
self.device.read_lock.release()
header = message['header']
data = message.get('data', {})
if header['source'] in self.device._channels:
self.device._processRX(message)
self.device._set_event(header['code'],
header['source'])
else:
if self.device._debug:
print(
'(S/N %s) Unrecognized message: %s - data: %s'
%
(self.device.info['serial'], header, data))
self.abort_lock.release()
self.abort_lock.release()
def abort(self):
self.abort_lock.acquire(True)
print(' Creating data & processing threads...')
self._data_thread = data_thread(self)
self._processing_thread = processing_thread(self)
print(' Starting threads...')
self._data_thread.start()
self._processing_thread.start()
print(' Device opened.')
def __init__(self, SN, device_type=None):
print('Opening device %s:' % (str(SN)))
self._ready = False
self._debug = False
self.port = d2xx.openEx(str(SN))
self.info = self.port.getDeviceInfo()
self.port.setTimeouts(1000,1000)
self.port.setBaudRate(d2xx.BAUD_115200)
self.port.setDataCharacteristics(d2xx.BITS_8, d2xx.STOP_BITS_1, d2xx.PARITY_NONE)
time.sleep(0.05)
self.port.purge(d2xx.PURGE_RX | d2xx.PURGE_TX)
time.sleep(0.05)
self.port.setFlowControl(d2xx.FLOW_RTS_CTS, 0, 0)
self.port.setRts()
self.TXstack = []
self.write_lock = threading.Lock()
self.RXstack = []
self.read_lock = threading.Lock()
self._events = {}
self._return_codes = {}
self._channels = {}
self.require_update = False
self.device_type = device_type
if self.device_type in APT_messages.return_codes and self.device_type in APT_messages.channels:
self._channels = dict(zip(APT_messages.channels[self.device_type],
range(len(APT_messages.channels[self.device_type]))))
self._channel_lookup = {v:k for k,v in self._channels.items()}
self._return_codes = APT_messages.return_codes[self.device_type]
for request_code in [self._return_codes[key] for key in self._return_codes]:
for chan in self._channels:
self.__create_event(request_code, chan)
class data_thread(threading.Thread):
def __init__(self, device):
threading.Thread.__init__(self)
self.device = device
self.abort_lock = threading.Lock()
self.update_time = 0
def run(self):
while True:
if not self.abort_lock.acquire(False):
break
start_time = time.time()
time.sleep(0.001)
if len(self.device.TXstack) > 0:
try:
self.device.write_lock.acquire(True)
message = self.device.TXstack.pop()
self.device.write_lock.release()
TXchunk = APT_messages.encode_header(message['header'])
if 'data' in message:
data_dict = APT_messages.data_type[message['header']['code']]
TXchunk += struct.pack(data_dict['format'], *[message['data'].get(key,0) for key in data_dict['parameters']])
self.device.port.write(TXchunk)
except Exception as ex:
if self.device._debug:
print('(S/N %s) Error writing data to device: %s' % (self.device.info['serial'], ex))
break
time.sleep(0.001)
if self.device.port.getStatus()[0]:
try:
message = {}
RXchunk = self.device.port.read(6)
#print('RX chunk: %s' % RXchunk.encode('hex'))
message['header'] = APT_messages.decode_header(RXchunk)
if message['header']['data_follows'] == True:
message['data'] = {}
data = self.device.port.read(message['header']['length'])
#print(' - Data: %s' % data)
data_dict = APT_messages.data_type.get(message['header']['code'], None)
if data_dict is not None:
data_stripped = struct.unpack(data_dict['format'], data[:struct.calcsize(data_dict['format'])])
for n,key in enumerate(data_dict['parameters']):
if key is None:
continue
message['data'][key] = data_stripped[n]
else:
message['data']['raw'] = data
self.device.read_lock.acquire(True)
self.device.RXstack.append(message)
self.device.read_lock.release()
except Exception as ex:
if self.device._debug:
print('(S/N %s) Error reading data from device: %s' % (self.device.info['serial'], ex))
break
self.update_time = time.time() - start_time
self.abort_lock.release()
self.abort_lock.release()
print(' Thread stopped.')
return
def abort(self):
self.abort_lock.acquire(True)
class processing_thread(threading.Thread):
def __init__(self, device):
threading.Thread.__init__(self)
self.device = device
self.abort_lock = threading.Lock()
def run(self):
# DO NOT FORGET TO SET THE DEVICE TO READY
while not self.device._ready:
pass
while True:
if not self.abort_lock.acquire(False):
break
time.sleep(0.001)
if len(self.device.RXstack) > 0:
self.device.read_lock.acquire(True)
message = self.device.RXstack.pop()
self.device.read_lock.release()
header = message['header']
data = message.get('data', {})
if header['source'] in self.device._channels:
self.device._processRX(message)
self.device._set_event(header['code'], header['source'])
else:
if self.device._debug:
print('(S/N %s) Unrecognized message: %s - data: %s' % (self.device.info['serial'], header, data))
self.abort_lock.release()
self.abort_lock.release()
def abort(self):
self.abort_lock.acquire(True)
print(' Creating data & processing threads...')
self._data_thread = data_thread(self)
self._processing_thread = processing_thread(self)
print(' Starting threads...')
self._data_thread.start()
self._processing_thread.start()
print(' Device opened.')
except getopt.GetoptError:
# print help information and exit:
usage()
sys.exit(2)
if len(args) == 4:
addr = int(args[0])
cmd = int(args[1])
dat1 = int(args[2])
dat2 = int(args[3])
cksum = (addr + cmd + dat1 + dat2) %256
wbuffer = chr(0) + chr(0) + chr(addr) + chr(cmd) + chr(dat1) + chr(dat2) + chr(cksum) + chr(0) # filled out to 8 bytes
#open the port
try:
h=d2xx.openEx('SEMSCA', d2xx.OPEN_BY_DESCRIPTION)
h.setTimeouts(500, 500)
h.setLatencyTimer(2)
except:
sys.stderr.write("Could not open port\n")
sys.exit(1)
h.write(wbuffer)
print
print '>>>Reply: ',
returneddata = h.read(8)
if returneddata[1] == '\x00': # If the second byte sent is not x00 then an error has occurred - see Firmware command list for details
print [ord(byte) for byte in returneddata][2:6]
