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Altera_Forum's avatar
Altera_Forum
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21 years ago

alt_dma_txchan_send status

I am getting an error from alt_dma_txchan_send. The status returned is -22. Below is the code. I lifted this code from this forum http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/smile...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Perhaps you should use

alt_dma_txchan_ioctl(txchan,ALT_DMA_RX_STREAM_ON,start_addr);

instead of

alt_dma_txchan_ioctl(txchan,ALT_DMA_TX_STREAM_ON,start_addr);