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Altera_Forum
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13 years ago

SGDMA status return code 'C'

Hi, I'm trying to perform a simple SGDMA transaction. Memory to Memory. The data is transferred. I use IORD on both memories and read the data to check. But the status code retu...
Altera_Forum's avatar
Altera_Forum
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13 years ago

That's not one of the error codes enumerated in errno.h, but it's the value from the sgdma status register: bits 2 and 3 are set and this tells you the dma transfer has correctly completed. See page 23-13 of the sgdma controller datasheet for thorough status register information.