def cmd_serial(self, cmd_str):
self.cmd_str = cmd_str
try:
if self.conn is None:
raise dcsim.DCSimError('Communications port to power supply not open')
self.conn.flushInput()
self.conn.write(cmd_str)
except Exception, e:
raise dcsim.DCSimError(str(e))
def cmd(self, cmd_str):
self.cmd_str = cmd_str
# self.ts.log_debug('cmd_str = %s' % cmd_str)
try:
self._cmd(cmd_str)
resp = self._query('SYSTem:ERRor?\n') #\r
#self.ts.log_debug('error resp = %s' % resp)
if len(resp) > 0:
if resp[0] != '0':
raise dcsim.DCSimError(resp + ' ' + self.cmd_str)
except Exception, e:
raise dcsim.DCSimError(str(e))
def cmd_usb(self, cmd_str):
try:
if self.conn is None:
self.ts.log('USB device = %s' % self.usb_name)
rm = visa.ResourceManager()
self.conn = rm.open_resource(self.usb_name)
#self.conn.write('*RST\n')
self.conn.write('*CLS\n')
self.conn.write(cmd_str)
except Exception, e:
raise dcsim.DCSimError(str(e))
def open(self):
"""
Open the communications resources associated with the grid simulator.
"""
try:
self.conn = serial.Serial(port=self.serial_port, baudrate=self.baudrate, bytesize=8, stopbits=1,
xonxoff=0, timeout=self.timeout, writeTimeout=self.write_timeout)
time.sleep(2)
#self.cmd('CONFigure:REMote ON\n')
except Exception, e:
raise dcsim.DCSimError(str(e))
def query_usb(self, cmd_str):
# setup connection if not already established.
try:
if self.conn is None:
self.ts.log('USB device = %s' % self.usb_name)
rm = visa.ResourceManager()
self.conn = rm.open_resource(self.usb_name)
resp = self.conn.query(cmd_str)
#self.ts.log_debug('cmd_str = %s, resp = %s' % (cmd_str, resp))
except Exception, e:
raise dcsim.DCSimError('Timeout waiting for response')
def cmd_tcp(self, cmd_str):
try:
if self.conn is None:
self.ts.log('ipaddr = %s ipport = %s' % (self.ipaddr, self.ipport))
self.conn = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.conn.settimeout(self.timeout)
self.conn.connect((self.ipaddr, self.ipport))
# print 'cmd> %s' % (cmd_str)
self.conn.send(cmd_str)
except Exception, e:
raise dcsim.DCSimError(str(e))
def query_serial(self, cmd_str):
resp = ''
more_data = True
self.cmd_serial(cmd_str)
while more_data:
try:
count = self.conn.inWaiting()
if count < 1:
count = 1
data = self.conn.read(count)
if len(data) > 0:
for d in data:
resp += d
if d == '\n':
more_data = False
break
else:
raise dcsim.DCSimError('Timeout waiting for response')
except dcsim.DCSimError:
raise
except Exception, e:
raise dcsim.DCSimError('Timeout waiting for response - More data problem')
def query_tcp(self, cmd_str):
resp = ''
more_data = True
self._cmd(cmd_str)
while more_data:
try:
data = self.conn.recv(self.buffer_size)
if len(data) > 0:
for d in data:
resp += d
if d == '\n': #\r
more_data = False
break
except Exception, e:
raise dcsim.DCSimError('Timeout waiting for response')
def query(self, cmd_str):
# self.ts.log_debug('query cmd_str = %s' % cmd_str)
try:
resp = self._query(cmd_str).strip()
except Exception, e:
raise dcsim.DCSimError(str(e))