AioGetAiMemoryType

Function

Retrieves the memory type for storing data.

Format

Ret = AioGetAiMemoryType ( Id , AiMemoryType )

Parameters

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

AiMemoryType [ C, C++ : short * ] [ Python : ctypes.POINTER(ctypes.c_short) ]
Specifies the address of the variable that stores the memory type for storing data.
The stored value meanings depends on the transfer mode that is decided by AioSetAiTransferMode function.

Device buffer

0	FIFO
1	RING

User buffer

0	Not overwrite the memory
1	Overwrite the memory

Return value

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

Return values	Content
0	Normality completion
7	Execute AioResetDevice function because the device has recovered from standby mode
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.
11090	Pointer to AiMemoryType is NULL Specify the address of variable to parameter.
20001	This function can't be used by this device
20002	Can not use while by another device works To use this function, analog input operation must be stopped.
20003	Can not use because another process is using the device When another process is using the device, all functions except for those that support multi-process can not be performed.

Initial value

In all devices, it is FIFO when device buffer is used, or it is "Overwrite the memory" when user buffer is used.

Remarks

This function cannot be used on devices without the analog input function.
If the device is in operation, the function cannot be performed.

Example

Retrieves the memory type for storing data.

C, C++	long Ret; short AiMemoryType; Ret = AioGetAiMemoryType ( Id , &AiMemoryType );
Python	Ret = ctypes.c_long() AiMemoryType = ctypes.c_short() Ret.value = caio.AioGetAiMemoryType ( Id , ctypes.byref(AiMemoryType) )