11.3.1.1. TCP/IP related methods¶
Created on Fri Aug 30 12:21:56 2019
@author: Weber
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class
pymodaq.daq_utils.tcp_server_client.Grabber(grab_method=None)[source]¶ -
grab_data()[source]¶ - Do a grab session using 2 profile :
- if grab pb checked do a continous save and send an “update_channels” thread command and a “grab” too.
- if not send a “stop_grab” thread command with settings “main settings-naverage” node value as an attribute.
See also
daq_utils.ThreadCommand(),set_enabled_Ini_buttons()
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class
pymodaq.daq_utils.tcp_server_client.TCPClient(ipaddress='192.168.1.62', port=6341, params_state=None, client_type='GRABBER')[source]¶ PyQt5 object initializing a TCP socket client. Can be used by any module but is a builtin functionnality of all actuators and detectors of PyMoDAQ
The module should init TCPClient, move it in a thread and communicate with it using a custom signal connected to TCPClient.queue_command slot. The module should also connect TCPClient.cmd_signal to one of its methods inorder to get info/data back from the client
The client itself communicate with a TCP server, it is best to use a server object subclassing the TCPServer class defined within this python module
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queue_command(command=<pymodaq.daq_utils.daq_utils.ThreadCommand object>)[source]¶ when this TCPClient object is within a thread, the corresponding module communicate with it with signal and slots from module to client: module_signal to queue_command slot from client to module: self.cmd_signal to a module slot
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class
pymodaq.daq_utils.tcp_server_client.TCPServer(client_type='GRABBER')[source]¶ Abstract class to be used as inherited by DAQ_Viewer_TCP or DAQ_Move_TCP
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close_server()[source]¶ close the current opened server. Update the settings tree consequently.
See also
set_connected_clients_table(),daq_utils.ThreadCommand()
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find_socket_type_within_connected_clients(sock)[source]¶ Find a socket type from a connected client with socket content corresponding.
Parameters Type Description sock ??? The socket content corresponding. Returns: the socket dictionnary Return type: dictionnary
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find_socket_within_connected_clients(client_type)[source]¶ Find a socket from a conneceted client with socket type corresponding.
Parameters Type Description client_type string The corresponding client type Returns: the socket dictionnary Return type: dictionnary
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print_status(status)[source]¶ Print the given status.
Parameters Type Description status string list a string list representing the status socket
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read_info(sock=None, test_info='an_info', test_value='')[source]¶ if the client is not from PyMoDAQ it can use this method to display some info into the server widget
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select(rlist, wlist=[], xlist=[], timeout=0)[source]¶ Implements the select method, https://docs.python.org/3/library/select.html :param rlist: :type rlist: (list) wait until ready for reading :param wlist: :type wlist: (list) wait until ready for writing :param xlist: :type xlist: (list) wait for an “exceptional condition” :param timeout: When the timeout argument is omitted the function blocks until at least one file descriptor is ready.
A time-out value of zero specifies a poll and never blocks.Returns: - list (readable sockets)
- list (writable sockets)
- list (sockets with error pending)
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send_command(sock, command='move_at')[source]¶ Send one of the message contained in self.message_list toward a socket with identity socket_type. First send the length of the command with 4bytes.
Parameters Type Description sock ??? The current socket command string The command as a string See also
utility_classes.DAQ_Viewer_base.emit_status(),daq_utils.ThreadCommand(),message_to_bytes()
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