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2D DMA on BF537

Question asked by Findl on Jun 10, 2011
Latest reply on Jun 13, 2011 by Prashant



the "Device Drivers and System Services" Manual describes how easily 2D DMA can be used to deinterleave incoming Data from an Image Sensor (RGBRGB => RR, GG BB). Following the given example in the document, XMODIFY gets the value N*M (height*width of the image) and YMODIFY gets the value 1-2*N*M. This makes sense. But how can I use it to deinterlace an RGB image of common size 480*640*3 Bytes with the given constraint in the document that the modifiers XMODIFY, YMODIFY can have values only up to +/-32 kBytes. In this example XMODIFY should become 307200 and YMODIFY should become -614399.


Thank you in advance for a response