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Which function do you mean?

Hi, Thank you for your quick response. But no, we would like to select the exact input pin, not the whole 15...0.

Hi, We are working on a code for Digital Discovery to generate a pattern from some pins and at the same time read some other pins and show the plot. This is the code that we are using. As it shows in the code, we are able to select the output pins, however, we would like to select the Digital Discovery input pins to acquire the signal. from ctypes import * from dwfconstants import * import sys import time import matplotlib.pyplot as plt if sys.platform.startswith("win"): dwf = cdll.dwf elif sys.platform.startswith("darwin"): dwf = cdll.LoadLibrary("/Library/Frameworks/dwf.framework/dwf") else: dwf = cdll.LoadLibrary("libdwf.so") #declare ctype variables IsInUse = c_bool() hdwf = c_int() sts = c_byte() channel = c_int() hzfreq = c_double() cdevices = c_int() #declare string variables devicename = create_string_buffer(64) serialnum = create_string_buffer(16) #print DWF version version = create_string_buffer(16) dwf.FDwfGetVersion(version) print("DWF Version: "+str(version.value)) #enumerate and print device information dwf.FDwfEnum(c_int(0), byref(cdevices)) print("Number of Devices: "+str(cdevices.value)) # Get the device name and serial num dwf.FDwfEnumDeviceName (c_int(0), devicename) dwf.FDwfEnumSN (c_int(0), serialnum) print("Device name = %s" %devicename.value) print("Serial num = %s" %serialnum.value) # Check if the device is opened dwf.FDwfEnumDeviceIsOpened(c_int(0), byref(IsInUse)) if not IsInUse: dwf.FDwfDeviceOpen(c_int(0), byref(hdwf)) if hdwf.value == 0: print("failed to open device") szerr = create_string_buffer(512) dwf.FDwfGetLastErrorMsg(szerr) print(str(szerr.value)) quit() print("Configuring Digital Out") hzSys = c_double() dwf.FDwfDigitalOutInternalClockInfo(hdwf, byref(hzSys)) data_py=[0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1] #data_py=[0,1,1,1,1,1] # how many bytes we need to fit this many bits, (+7)/8 rgbdata=(c_ubyte*((len(data_py)+7)>>3))(0) # number of bytes that we need to save the array # array to bits in byte array for i in range(len(data_py)): if data_py[i] != 0: rgbdata[i>>3] |= 1<<(i&7) print(rgbdata[:]) # dwf.FDwfDigitalInInputOrderSet(hdwf, c_int(1)) pin=0 #Pin24 # generate pattern dwf.FDwfDigitalOutEnableSet(hdwf, c_int(pin), c_int(1)) dwf.FDwfDigitalOutTypeSet(hdwf, c_int(pin), DwfDigitalOutTypeCustom) # DwfDigitalOutTypeCustom, DwfDigitalOutTypeRandom # 1kHz sample rate dwf.FDwfDigitalOutDividerSet(hdwf, c_int(pin), c_int(int(hzSys.value/1e3))) # set sample rate dwf.FDwfDigitalOutDataSet(hdwf, c_int(pin), byref(rgbdata), c_int(len(data_py))) print("Generating pattern...") dwf.FDwfDigitalOutConfigure(hdwf, c_int(1)) #sample rate = system frequency / divider, 100MHz/1 dwf.FDwfDigitalInDividerSet(hdwf, c_int(1000)) # 16bit per sample format dwf.FDwfDigitalInSampleFormatSet(hdwf, c_int(16)) # set number of sample to acquire cSamples = 32768 rgwSamples = (c_uint16*cSamples)() dwf.FDwfDigitalInBufferSizeSet(hdwf, c_int(cSamples)) dwf.FDwfDigitalInInputOrderSet(hdwf, c_int(0)) # with 8 bits DIO-0:7 # begin acquisition dwf.FDwfDigitalInConfigure(hdwf, c_bool(0), c_bool(1)) print ("waiting to finish") while True: dwf.FDwfDigitalInStatus(hdwf, c_int(1), byref(sts)) print ("STS VAL: " + str(sts.value)) if sts.value == stsDone.value: break time.sleep(1) print ("Acquisition finished") # get samples, byte size dwf.FDwfDigitalInStatusData(hdwf, rgwSamples, 2*cSamples) time.sleep(10) dwf.FDwfDigitalOutReset(hdwf) dwf.FDwfDeviceCloseAll() rgpy=[0.0]*len(rgwSamples) for i in range(0,len(rgpy)): rgpy[i]=rgwSamples[i] plt.plot(rgpy) plt.show() I was wondering that if someone can help us with this.