Added vdma oneway transfer to library, fixed passing of frame info #118
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…tion in single write and read transfer
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Hi, skoster, nice work. BTW, what platform do you use? ZynqMp or Zynq7000? Have you tested vdma loopback? @skoster-enclustra |
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The project in which i used this library has long since finished, so I'm a bit fuzzy on the details, but i think it was on zynqmp. We used and abused the axidma driver to inject images generated in software running on the PS. I'm pretty sure we created a loopback in firmware to test the driver. |
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For applications where single frames need to be pulled in with VDMA, it may be required to have a single transfer function besides the continuously running video transfer.
I added a new function to the library rather than change the signature of the existing axidma_oneway_transfer function in order to preserve backwards compatibility. In this work i also discovered a small bug in the dma layer where frame size information was not passed through for single transactions.