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Altera_Forum's avatar
Altera_Forum
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15 years ago

I have a problem about the sgdma when I used it to transfer vga data(800x600x4bytes)!

Hi, Just as the title describes,I wanna to use the SGDMA to tranfer VGA data which has much of data(800x600x4bytes=1920000bytes).SGDMA is configured to Memory to Streaming mode , the descripto...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

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Hm, if it is monitor, did You check the visible areas?

Enable memory content viewer and check if descriptors are written to the on-chip memory.

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Thank you for your reply!

But,I have already checked the descriptor memory ever,it is no problem!And the TFT monitor is Ok(800x600)!

It is the data from the sgdma that is wrong,so that I have a idea that if altera has some prohibition about it!