Posted on September 02, 2014 at 12:56I've been looking through the ARM documentation and am confused by when I need a DMB instruction. The CMSIS libraries for DMA(strm, enable) don't seem to include a DMB instruction, however the documentation indic...

Posted on July 17, 2014 at 09:49  The original post was too long to process during our migration. Please click on the attachment to read the original post.

Posted on July 16, 2014 at 10:45I'm trying to understand how to build a buffered serial handler using DMA. I currently have an interrupt driven handler, that adds characters received to a circular buffer, but due to the lack of a FIFO on the USARTs,...

Posted on July 12, 2014 at 15:59While trying to track down my DMA2 stalling problem, I've tried to enable interrupts for things other than completion. As a result, I notice that these two definitions: </p>   #define     </b>     DMA_FLAG_FEIF0 ((u...

Posted on July 09, 2014 at 18:40I'm having some problems with DMA transfers apparently stalling on our STM32F405ZGT6 board. The problem seems to only happen when I have multiple streams running. So, I have Stream3 using SDIO, with 32 bit wide access...