是否可以使用 Tkinter 条目作为输入，带有按钮触发器，将值传递给信号发生器

Question

所以我基本上想将不同的值传递给我的Signal Generator，而不是在我的代码上有一个默认的Frequency/Amplitude值。

我尝试了Entry小部件的get方法，但没有运气：

我认为它应该看起来像这样：

inst.write(f"SOUR:POW:LEV:IMM:AMPL {ampl_input.get()}")

但是由于它将文本作为字符串返回，那么我应该以某种方式将该字符串传递给按钮。

import visa
import tkinter as tk

rm = visa.ResourceManager()
print(rm.list_resources())
inst = rm.open_resource('TCPIP::192.168.100.200::INSTR')
ampl = str(-20)
freq_input = str(input())

inst.write("OUTP ON")
def freqset_smb100a():
    inst.write(f""SOUR:FREQ:CW "+ {freq_input.get()})
def amplset_smb100a():
    inst.write("SOUR:POW:LEV:IMM:AMPL " + ampl) #TheSOUR:FREQ etc are commands for the instrument.

HEIGHT = 400
WIDTH = 600
root = tk.Tk()
canvas = tk.Canvas(root, height=HEIGHT, width=WIDTH)
canvas.pack()
frame = tk.Frame(root, bg='#80c1ff', bd=5)
frame.place(relx=0.5, rely=0.1, relwidth=0.75, relheight=0.1, anchor='n')
button = tk.Button(frame, text="Set Freq", font=40, command=freqset_smb100a)
button.place(relx=0.7, relheight=1, relwidth=0.3)
button = tk.Button(frame, text="Set Ampl", font=40, command=amplset_smb100a)
button.place(relx=0.01, relheight=1, relwidth=0.3)
button = tk.Button(frame, text="IDN", font=40, command=show_idn)
button.place(relx=0.35, relheight=1, relwidth=0.3)
entry = tk.Entry(frame, font=15)
entry.place(relx=0.35, relheight=1, relwidth=0.3)
lower_frame = tk.Frame(root, bg='#80c1ff', bd=10)
lower_frame.place(relx=0.5, rely=0.8, relwidth=0.7, relheight=0.2, anchor='n')
label = tk.Label(lower_frame)
label.place(relwidth=1, relheight=1)
root.mainloop()

Answer 1

def freqset_smb100a():
    print(inst.write("SOUR:FREQ:CW 150000000"))
    inst.write(f"SOUR:POW:LEV:IMM:AMPL {ampl_input.get()}")
    print(inst.write("SOUR:POW:LEV:IMM:AMPL -25"))
    print(inst.write("OUTP ON"))

也许是这样的？