from ctypes import *
AIOUSB = cdll.LoadLibrary("aiousb")

def displayBoardInfo(index):
    PID = c_int()
    len = c_int(20)
    name = create_string_buffer(len.value)
    AIOUSB.QueryDeviceInfo(index, byref(PID), byref(len), byref(name), 0, 0)
    sn = c_longlong(0)
    AIOUSB.GetDeviceSerialNumber(index, byref(sn))
    print("Board found at index", index, "has deviceID", hex(PID.value), "=", name.value.strip().decode(), "SN=", hex(sn.value))

# main code section
print("AIOUSB Python introductory sample using ctypes\n")

boardsMask = AIOUSB.GetDevices()
if boardsMask == 0:
    print("No valid AIOUSB devices were detected.\nPlease confirm your USB device is connected, powered,\nand the drivers are installed correctly (check Device Manager).")
    exit()

boardsFound = 0
for di in range(0, 31):
    if 0 != boardsMask & (1 << di):
        boardsFound = boardsFound + 1
        displayBoardInfo(di)

print("\nAIOUSB Boards found:", boardsFound)
print("Done.")
input("Press <ENTER> to Exit.")