MATLAB中GPIB到PyVISA的转换

2024-03-28 08:36:23 发布

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我继承了一些用于通过GPIB连接编程XYZ stage的MATLAB代码。为了使它与Python中的一些现有代码更加兼容,我需要以某种方式对其进行翻译,例如使用PyVISA包。我真的需要一些帮助!在

所以,到目前为止,我所做的只是一些基本的东西,即

from visa import *
stage = instrument("GPIB::2")

由此,我可以使用identification命令并正确获取设备的ID:

^{pr2}$

那么,你知道如何将下面的MATLAB转换成适当的PyVISA命令吗?我最大的问题是我真的不知道如何翻译语法。。。在

classdef cascade12000b < handle
    properties(Constant)
        GPIB_ADDRESS = 28;
        DEVICE_TAG = 'Cascade 12000B Probe Station';
        DEVICE_ID = 2;
    end

    properties
        gpib_conn;
    end

    methods
        function [obj] = cascade12000b()
            obj.open();
        end

        function [x, y, z] = get_position(obj)
            [r] = obj.exec_command(sprintf(':MOV:ABS? %d', cascade12000b.DEVICE_ID));
            tmp = sscanf(r, '%d %d %d');
            x = tmp(1);
            y = tmp(2);
            z = tmp(3);
        end

        function [] = move_absolute(obj, x, y)
            [~, ~, z] = obj.get_position();
            obj.exec_command(sprintf(':MOV:ABS %d %d %d %d', cascade12000b.DEVICE_ID, x, y, z));
        end

        function [] = move_relative(obj, dx, dy)
            obj.exec_command(sprintf(':MOV:REL %d %d %d %d', cascade12000b.DEVICE_ID, dx, dy, 0));
        end

Tags: 代码idobjdevicefunctionstagetmpcommand
1条回答
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1楼 · 发布于 2024-03-28 08:36:23

像这样的东西会有用的

class Cascade12000b(object):
    """A Cascade12000b driver.

    :param connection: A connection object, used to communicate with the real device.
        The connection interface should conform to the following interface.
        It must have two methods:

        * `.write()` taking a string message
        * `.ask()` taking a string message, returning a string response

    :param int id: The device id

    """
    def __init__(self, connection, id=2):
        self.connection = connection
        self.id = int(id)

    def position(self):
        """Returns a tuple `(x,y,z)` with the position coordinates."""
        response = self.connection.ask(':MOV:ABS? {0:d}'.format(self.id))
        # assuming whitespace separated response
        return tuple(int(x) for x in reponse.split())

    def move_absolute(self, x, y, z=None):
        """Sets the position in absolute coordinates."""
        if z is None:
            _, _, z = self.position()
        self.connection.write(':MOV:ABS {0:d} {1:d} {2:d} {3:d}'.format(self.id, x, y, z)

    def move_relative(self, dx, dy, dz=0):
        """Sets the position in relative coordinates."""
        self.connection.write(':MOV:REL {0:d} {1:d} {2:d} {3:d}'.format(self.id, dx, dy, dz)

你会这样用的

^{pr2}$

如果您必须编写多个设备驱动程序,您可能需要查看一些python包,如slave(注意:我是slave的作者)或{a2}。

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