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我該如何設定我的DAQ卡是使用中斷而非使用DMA?
主要軟體:
主要軟體版本: 4.6.1
主要軟體修正版本: N/A
次要軟體: N/A
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問題:
我該如何設定我的DAQ卡是使用中斷(IRQ)而非使用DMA?
解答:
對LabVIEW而言:
- 對Traditional DAQ而言:使用位於Functions Palette » Data Acquisition » Calibration and Configuration.的"Set DAQ Device Information.vi",使用這個VI可以讓你改變傳輸模式是利用DMA或是中斷.使用這個VI時可以參考LabVIEW help.
- 對DAQmx而言:使用DAQmx Channel的Property Node,這位在Functions Palette » DAQ - Data Acquisition palette.在上面點右鍵並選擇Properties » Analog Input » General Properties » Advanced » Data Transfer and Memory » Data Transfer Mechanism.
對CVI而言(或Visual Basic / Visual C++):
- 對Traditional DAQ而言:使用"Set_DAQ_Device_Info"函數.請參考NI-DAQ Help檔以獲得更多相關的資訊.
- 對DAQmx而言:使用DAQmxSetAODataXferMech函數.
相關連結:
Developer Zone Tutorial: Data Acquisition Specifications -- a Glossary
KnowledgeBase 0I5924EO: What Are DMA and IRQ and What Are They Used for in GPIB?
KnowledgeBase 23GF01Q1: My Low-Cost E Series Multifunction DAQ Board Has a DMA Conflict
Developer Zone Tutorial: Programming Interrupts for DOS-Based Data Acquisition on 80x86-Based Computers
附加檔案:
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報告日期: 04/25/2003
最後更新: 12/07/2007
文件偏號: 2WOEP7MW