As of April 2, 2014, this has been fixed using DMA SPI. See reply #15 for working copy of the code. DMA SPI obtained from DUEZoo/dmaspi.ino at master · manitou48/DUEZoo · GitHub Hi guys, I'm trying to program a ship that requires 4 wire serial programming (essentially SPI) For those who are cur…

Continuous SPI for multiple bytes

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