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Reading Parallel Port Speed


#1

Hey guys,
I was wondering, how long would reading a parallel port take? (16 bit)
As in storing the value of a parallel port, with reading triggered by an interrupt, into a pre-existing buffer.


#2

In RLP? microseconds. In C#? not a good idea


#3

Okay thanks - I’ve got an arm9 doing a lot of video processing, and I was planning to transfer that using a FIFO buffer to the USBizi, for it to be sent along via a wireless link - Whats the fastest way to transfer data between the two chips?


#4

Video feed going into USBizi from ARM9?! Can you explain more? Why doing so?


#5

Actually good point… That gave me a better idea - The USBizi was dealing with all the communication, but instead I’ll serial out all the communication from usbizi to the arm9, and let it deal with it :).