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wbebenben
Posts: 8
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VISA USB通信,单片机程序无误,timeout设置足够长,LabVIEW调试

求问各位高手,我现在用labview和c8051f320单片机usb通信,用VISA创建驱动,现在设备已经能够识别了,但是用MAX或LabVIEW调试的时候出问题:主机给单片机写数据时,每写两次只能成功一次,另一次显示超时;读数据时,总也读不了,显示超时。读写数据都是个位数字节,不存在数据量大的问题。同样程序,用别的驱动在C++写的上位机程序中没有问题。

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乐哥
Posts: 2
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Re: VISA USB通信,单片机程序无误,timeout设置足够长,LabVIEW调试

你的us通信做好了吗?

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wbebenben
Posts: 8
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Re: VISA USB通信,单片机程序无误,timeout设置足够长,LabVIEW调试

it's all right now, but not with VISA. sorry i can not type chinese now.

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乐哥
Posts: 2
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Re: VISA USB通信,单片机程序无误,timeout设置足够长,LabVIEW调试

use the faction in labwindows ? can you give me some help ? and share the thought of the program  thank you !!!!!!

Member
wbebenben
Posts: 8
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Re: VISA USB通信,单片机程序无误,timeout设置足够长,LabVIEW调试

用visa我一直没调成,最后用了单片机厂家自带的工具包和驱动。在labview里用调用dll的方法调用厂家工具包里的函数