At 19.56 2011.08.30, you wrote: >On Tue, Aug 30, 2011 at 9:40 AM, Nicola Perotto=20 > wrote: >> I was not able to write at more than 64KB/s, continuous. >> The problem, I think, is that we write the internal SD buffer at=20 >full speed and >> then we must wait the real write! With only 2*512 byte buffer this=20 >is a bootleneck. >> > >The problem with all embedded devices using SD cards is that we are >using them in SPI mode which almost never works according to the way >they say it should. And SPI mode is very very slow compared to 4-bit >wide bus that real controllers can use. Is it easy to bit-bang this on PICs/dsPICs/PIC32s? > >--=20 >Martin K. >--=20 >http://www.piclist.com PIC/SX FAQ & list archive >View/change your membership options at >http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .