AioGetDemoDoBit

Function

This is a function that gets the digital output of the demo device in bit.

Format

Ret = AioGetDemoDoBit ( Id , DoBitNum , DoBit , DoData )

Parameters

Id [ C, C++ : short ] [ Python : ctypes.c_short ]
Specifies the device ID retrieved from AioInit.

DoBitNum [ C, C++ : short ] [ Python : ctypes.c_short ]
Specifies the number of elements in the bit number array.

DoBit [ C, C++ : short * ] [ Python : ctypes.POINTER(ctypes.c_short) ]
Specifies the address of the array that stored the bit number.

DoData [ C, C++ : short * ] [ Python : ctypes.POINTER(ctypes.c_short) ]
Specifies the address of the array that stores the data.

Return values

Ret [ C, C++ : long ] [ Python : ctypes.c_long ]

Return values	Content
0	Normality completion
10001	Invalid Id was specified Use the Id retrieved from AioInit to specify the Id in this function.
10002	AIO driver can't be called At first, perform AioInit function.
18062	Pointer to DoBit, DoData is NULL
28060	The value of DoBitNum is outside the designated range of the device being used
28061	The value of DoBit is outside the designated range of the device being used
28062	A driver inner error occurred

Remarks

This is a function dedicated to the demo device.

You can modify Digital Output value by calling AioOutputDoBit function.

Example

Gets the digital output data of bit 0 to bit 7.

C, C++	long Ret; short AoChannel[8]; float AoData[8]; short i; for( i = 0 ; i < 8 ; i++ ){ AoChannel[i] = i; } Ret = AioGetDemoAo ( Id , 8 , &AoChannel[0] , &AoData[0] );
Python	Ret = ctypes.c_long() DoBitType = ctypes.c_short * 8 DoBit = DoBitType() DoDataType = ctypes.c_short * 8 DoData = DoDataType() for i in range(8): DoBit[i] = i Ret.value = caio.AioGetDemoDoBit ( Id , 8 , DoBit , DoData )