Commit cb568e88d79b3bf31cf92eef8aea1e9f6b2817c7
1 parent
9af9f93f99
Exists in
master
Add Lakeshore LS350 support over ethernet
Showing 1 changed file with 70 additions and 0 deletions Side-by-side Diff
instruments/LS350.py
| 1 | +from abstract_instrument import abstract_instrument | |
| 2 | +import socket | |
| 3 | + | |
| 4 | +#============================================================================== | |
| 5 | + | |
| 6 | +ALL_VAL_TYPE = ['TEMP', 'RES'] | |
| 7 | +ALL_CHANNELS = ['a', 'b', 'c', 'd'] | |
| 8 | + | |
| 9 | +ADRESS = "192.168.0.12" | |
| 10 | +CONF_VAL_TYPE = ['krdg?', 'srdg?'] | |
| 11 | + | |
| 12 | +#============================================================================== | |
| 13 | + | |
| 14 | +class LS350(abstract_instrument): | |
| 15 | + def __init__(self, channels, vtypes, adress): | |
| 16 | + self.adress = adress | |
| 17 | + self.port = 7777 | |
| 18 | + self.channels = channels | |
| 19 | + self.vtypes = vtypes | |
| 20 | + | |
| 21 | + def model(self): | |
| 22 | + #self.send("*IDN?") | |
| 23 | + #return self.read() | |
| 24 | + return "LS350" | |
| 25 | + | |
| 26 | + def connect(self): | |
| 27 | + print('Connecting to device @%s:%s...' %(self.adress, self.port)) | |
| 28 | + self.sock = socket.socket(socket.AF_INET, | |
| 29 | + socket.SOCK_STREAM, | |
| 30 | + socket.IPPROTO_TCP) | |
| 31 | + self.sock.settimeout(10.0) # Don't hang around forever | |
| 32 | + self.sock.connect((self.adress, self.port)) | |
| 33 | + print(' --> Ok') | |
| 34 | + print(self.model()) | |
| 35 | + self.configure() | |
| 36 | + | |
| 37 | + def configure(self): | |
| 38 | + self.strCh = '' | |
| 39 | + for ch in self.channels: | |
| 40 | + self.strCh = self.strCh + '%s %s;'%(CONF_VAL_TYPE[ALL_VAL_TYPE.index(self.vtypes[self.channels.index(ch)])], ch) | |
| 41 | + self.strCh = self.strCh[0:-1] | |
| 42 | + print(self.strCh) | |
| 43 | + | |
| 44 | + def getValue(self): | |
| 45 | + self.send(self.strCh) | |
| 46 | + return self.read() | |
| 47 | + | |
| 48 | + def read(self): | |
| 49 | + self.send("++read eoi") | |
| 50 | + ans = '' | |
| 51 | + nb_data_list = [] | |
| 52 | + nb_data = '' | |
| 53 | + try: | |
| 54 | + while ans != '\n': | |
| 55 | + ans = self.sock.recv(1) | |
| 56 | + nb_data_list.append(ans) # Return the number of data | |
| 57 | + list_size = len(nb_data_list) | |
| 58 | + for j in range (0, list_size): | |
| 59 | + nb_data = nb_data+nb_data_list[j] | |
| 60 | + return nb_data | |
| 61 | + except socket.timeout: | |
| 62 | + print "Socket timeout error when reading." | |
| 63 | + raise | |
| 64 | + | |
| 65 | + def disconnect(self): | |
| 66 | + self.send('MODE0') | |
| 67 | + self.sock.close() | |
| 68 | + | |
| 69 | + def send(self, command): | |
| 70 | + self.sock.send("%s\n"%command) |