Added example for ADwin communication

.gitignore

-**example**
+**example_apparatus**
 **/__pycache__/
 user_devices/ADwin_old_implementation/
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user_devices/ADwinProII/testing/example.py

+import sys
+import time
+import logging
+import numpy as np
+import matplotlib.pyplot as plt
+try:
+    import ADwin
+except ImportError:
+    sys.path.append(r"C:\ADwin\Developer\Python")
+    import ADwin
+
+from user_devices.ADwinProII.ADwin_utils import ADC,DAC
+
+RAISE_EXCEPTIONS = 1
+NO_YES = ("no", "yes")
+
+DEVICENUMBER = 0x1
+PROCESSORTYPE = "12"
+PROCESS_2 = r"C:\ADwin\LEOLAB\ADbasic_program_manual.TC2"
+
+adw = ADwin.ADwin(DEVICENUMBER, RAISE_EXCEPTIONS)
+
+def init():
+    # Boot ADwin-System
+    if adw.Test_Version():
+        print("boot ADwin-system... ", end="", flush=True)
+        BTL = adw.ADwindir + "adwin" + PROCESSORTYPE + ".btl"
+        adw.Boot(BTL)
+        print("ok")
+
+    # Test_Version
+    print("test_version()... ", end="", flush=True)
+    if adw.Test_Version() == 0:
+        print("ok")
+    else:
+        print("not ok")
+
+    print("process is running:", NO_YES[adw.Process_Status(1)])
+    print("processdelay:", adw.Get_Processdelay(1))
+
+    # ProcessorType
+    print("processor_type:", adw.Processor_Type())
+
+def load_process(PROCESS,PROCESS_NO):
+    # Load and start process
+    print("load process... ", end="", flush=True)
+    adw.Load_Process(PROCESS)
+    time.sleep(0.2)
+    print("ok")
+
+def start_process(PROCESS_NO):
+    print("start process... ", end="", flush=True)
+    adw.Start_Process(PROCESS_NO)
+    print("ok")
+    time.sleep(0.2)
+    print("process is running:", NO_YES[adw.Process_Status(PROCESS_NO)])
+
+    print("workload... ", end="", flush=True)
+    adw.Workload() # first call with invalid value
+    print(adw.Workload(), "%")
+
+    print("free memory, type cm:", adw.Free_Mem(5), "kbyte")
+    print("free memory, type um:", adw.Free_Mem(6), "kbyte")
+
+if __name__=="__main__":
+    init()
+    load_process(PROCESS_2,2)
+
+    # Set AOut of Module 5, Channel 0 to 1V  
+    output = ADC(0)
+    adw.Set_Par(51,5)
+    adw.Set_Par(52,1)
+    adw.Set_Par(53,int(output))
+    adw.Set_Par(54,3)
+    adw.Set_Par(55,1)
+    adw.Fifo_Clear(51)
+
+    # Start Process
+    adw.Start_Process(2)
+    for i in np.arange(0,5.1,0.5):
+        adw.Set_Par(53,int(ADC(i)))
+        time.sleep(1e-3)
+
+    for i in 5*np.sin(np.arange(0,2*np.pi,0.1)):
+        adw.Set_Par(53,int(ADC(i)))
+        time.sleep(1e-3)
+        
+    fifo = np.ctypeslib.as_array(adw.GetFifo_Long(51,adw.Fifo_Full(51)))
+    time.sleep(1)
+    adw.Stop_Process(2)
+
+    values = DAC(fifo)
+    times = np.arange(len(fifo)) * PROCESSDELAY_2 * 1e-9 * 100
+    
+    plt.figure()
+    plt.plot(times*1000,values)
+    plt.xlabel("Time [ms]") 
+    plt.ylabel("Voltage")
+    plt.show()
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