AioSetDemoAiType

Function

Sets the waveform type used for the analog input value of the demo device.

Format

Ret = AioSetDemoAiType ( Id , AiChannelNum , AiChannel , AiType , AiPeriod )

Parameters

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

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

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

AiType [ C, C++ : short * ] [ Python : ctypes.POINTER(ctypes.c_short) ]
Specifies the address of the array that stored the waveform type.

0	Fixed value
1	Sin wave
2	Triangle wave
3	Square wave

AiPeriod [ C, C++ : short * ] [ Python : ctypes.POINTER(ctypes.c_short) ]
Specifies the address of the array that stored the period (number of 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.
18044	Pointer to AiChannel, AiType, AiPeriod is NULL
28040	The value of AiChannelNum is outside the designated range of the device being used
28041	The value of AiChannel is outside the designated range of the device being used
28042	The value of AiType is outside the designated range of the device being used
28043	The value of AiPeriod is outside the designated range of the device being used
28044	A driver inner error occurred

Remarks

This is a function dedicated to the demo device.

The initial value is fixed value: 0V.
Please call AioSetDemoAi function to modify Analog Input value when the Demo AI Type is "fixed" type.

The one cycle of waveform is indicated by "AiPeriod" parameter.
The minimum and maximum of the waveform match the range setting of the demo device.
You can confirm the current range by calling AioGetAiRange function.

Please call AioSingleAiEx or AioMultiAiEx function when you confirm the current Analog Input values.

Example

Sets the waveform type "Sin wave" used for the analog input value for channel 0 to channel 7.
The period (number of data) is 1000.

C, C++	long Ret; short AiChannel[8]; short AiType[8]; short AiPeriod[8]; short i; for( i = 0 ; i < 8 ; i++ ){ AiChannel[i] = i; AiType[i] = 1; AiPeriod[i] = 1000; } Ret = AioSetDemoAiType ( Id , 8 , &AiChannel[0] , &AiType[0] , &AiPeriod[0] );
Python	Ret = ctypes.c_long() AiChannelType = ctypes.c_short * 8 AiChannel = AiChannelType() AiTypeType = ctypes.c_short * 8 AiType = AiTypeType() AiPeriodType = ctypes.c_short * 8 AiPeriod = AiPeriodType() for i in range(8): AiChannel[i] = i AiType[i] = 1 AiPeriod[i] = 1000 Ret.value = caio.AioSetDemoAiType ( Id , 8 , AiChannel , AiType , AiPeriod )