AioGetAoStatus

Function

Retrieves the analog output status.

Format

Ret = AioGetAoStatus ( Id , AoStatus )

Parameters

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

AoStatus [ C, C++ : long * ] [ Python : ctypes.POINTER(ctypes.c_long) ]
Specifies the address of the variable that stores status.
AoStatus have the meanings as following in bit.

Status	Macro	Value
Device is running	AOS_BUSY	00000001H
Wait the start trigger	AOS_START_TRG	00000002H
The specified number of data are output	AOS_DATA_NUM	00000010H
Generating clock period error	AOS_SCERR	00020000H
DA conversion error	AOS_AOERR	00040000H
Driver spec error	AOS_DRVERR	00080000H

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.
13380	Pointer to AoStatus is NULL Specify the address of variable to parameter.
20001	This function can't be used by this device
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, AoStatus = 0

Remarks

If "Generating clock period error" or "DA conversion error" occurs, the conversion stops.
This function cannot be used on devices without the analog output function.
This function can be executed even if the device is in operation.
If the conversion start condition is specified to Event controller output, Wait the start trigger status will not be notified.
When the device is in operation, using function AioSetAoSamplingData or AioSetAoSamplingDataEx
to set the sequential output data, if data isn't added in time, the operation will be terminated without error status.

Example

Retrieves the analog output status.

C, C++	long Ret; long AoStatus; Ret = AioGetAoStatus ( Id , &AoStatus );
Python	Ret = ctypes.c_long() AoStatus = ctypes.c_long() Ret.value = caio.AioGetAoStatus ( Id , ctypes.byref(AoStatus) )