sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Open1788 SDCard DMA works

Browse Source 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5805 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2013-03-31 21:11:29 +00:00
parent ee3c2a24dd
commit 7430e9b629
2 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
ChangeLog
View File

@ -4478,3 +4478,7 @@
logic to extend directory clusters for the case of long file names logic to extend directory clusters for the case of long file names
but also include a few important general fixes (such as for storing but also include a few important general fixes (such as for storing
32 bit FAT values) (2013-03-31). 32 bit FAT values) (2013-03-31).
* arch/arm/src/lpc17xx/lpc17_gdma.c and lpc17_sdcard.c: SD card DMA
is now functional. Thre may be some issues with DMA from CPU SRAM
which is apparently disabled in sleep mode; up_idle() always enters
sleep mode (2013-03-31).

4
arch/arm/src/lpc17xx/lpc17_gpdma.c
View File

@ -247,6 +247,10 @@ void weak_function up_dmainitialize(void)
{ {
up_enable_irq(LPC17_IRQ_GPDMA); up_enable_irq(LPC17_IRQ_GPDMA);
} }
/* Enable the DMA controller (for little endian operation) */
putreg32(DMA_CONFIG_E, LPC17_DMA_CONFIG);
} }
/**************************************************************************** /****************************************************************************