”““DWF Python示例作者:Digilent公司。Revision: 2022-05-24 Requires: Python 2.7, 3 """ from ctypes import * from dwfconstants import * import time import sys 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") hdwf = c_int() sts = c_byte() version = create_string_buffer(16) dwf.FDwfGetVersion(version) print("DWF Version: "+str(version.value)) print("Opening first device") dwf.FDwfDeviceOpen(c_int(-1), byref(hdwf)) if hdwf.value == hdwfNone.value: print("failed to open device") quit() dwf.FDwfDeviceAutoConfigureSet(hdwf, c_int(0)) # 0 = the device will be configured only when calling FDwf###Configure # set up analog IO channel nodes # enable p6V supply with 5V and 0.5A dwf.FDwfAnalogIOChannelNodeSet(hdwf, c_int(0), c_int(0), c_double(1)) dwf.FDwfAnalogIOChannelNodeSet(hdwf, c_int(0), c_int(1), c_double(5.0)) dwf.FDwfAnalogIOChannelNodeSet(hdwf, c_int(0), c_int(2), c_double(0.5)) # enable p25V supply with 10V and 0.2A dwf.FDwfAnalogIOChannelNodeSet(hdwf, c_int(1), c_int(0), c_double(1)) dwf.FDwfAnalogIOChannelNodeSet(hdwf, c_int(1), c_int(1), c_double(10.0)) dwf.FDwfAnalogIOChannelNodeSet(hdwf, c_int(1), c_int(2), c_double(0.2)) # enable n25V supply with -10V and -0.2A dwf.FDwfAnalogIOChannelNodeSet(hdwf, c_int(2), c_int(0), c_double(1)) dwf.FDwfAnalogIOChannelNodeSet(hdwf, c_int(2), c_int(1), c_double(-10.0)) dwf.FDwfAnalogIOChannelNodeSet(hdwf, c_int(2), c_int(2), c_double(0.1)) # master enable dwf.FDwfAnalogIOEnableSet(hdwf, c_int(1)) dwf.FDwfAnalogIOConfigure(hdwf) for i in range(1, 11): time.sleep(1) #wait 1 second between readings #fetch analogIO status from device if dwf.FDwfAnalogIOStatus(hdwf) == 0: break #supply monitor v1 = c_double() v2 = c_double() dwf.FDwfAnalogIOChannelNodeStatus(hdwf, c_int(0), c_int(1), byref(v1)) dwf.FDwfAnalogIOChannelNodeStatus(hdwf, c_int(0), c_int(2), byref(v2)) print("p6V: " + str(round(v1.value,3)) + "V\t" + str(round(v2.value,3)) + "A") dwf.FDwfAnalogIOChannelNodeStatus(hdwf, c_int(1), c_int(1), byref(v1)) dwf.FDwfAnalogIOChannelNodeStatus(hdwf, c_int(1), c_int(2), byref(v2)) print("p25V: " + str(round(v1.value,3)) + "V\t" + str(round(v2.value,3)) + "A") dwf.FDwfAnalogIOChannelNodeStatus(hdwf, c_int(2), c_int(1), byref(v1)) dwf.FDwfAnalogIOChannelNodeStatus(hdwf, c_int(2), c_int(2), byref(v2)) print("n25V: " + str(round(v1.value,3)) + "V\t" + str(round(v2.value,3)) + "A") dwf.FDwfAnalogIOChannelNodeStatus(hdwf, c_int(4), c_int(0), byref(v1)) dwf.FDwfAnalogIOChannelNodeStatus(hdwf, c_int(4), c_int(3), byref(v2)) print("Temp: " + str(round(v1.value,3)) + "*C Fan:\t" + str(round(v2.value,3)) + "RPM") dwf.FDwfAnalogIOReset(hdwf) dwf.FDwfAnalogIOConfigure(hdwf) dwf.FDwfDeviceClose(hdwf)