mi mi / Mbed 2 deprecated SDFileSystemDMA-test Featured

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Dependencies:   SDFileSystemDMA mbed

Refer to:
https://developer.mbed.org/users/mimi3/code/SDFileSystemDMA

Caution

If your board has SRAM less than or equal to 8KB, the 'buffer' size must be set to 512 Bytes.

NUCLEO-F411RE
About 2.5MBytes/sec
/media/uploads/mimi3/sdfilesystemdma-speed-test-teraterm-output-f411re.png
NUCLEO-L152RE
About 1MBytes/sec
/media/uploads/mimi3/sdfilesystemdma-l152re-cui.png

Diff: main.cpp

Revision:
18:5fb42182d85d
Parent:
12:dfa39c797789
Child:
20:e34f5e5f307b
--- a/main.cpp	Mon Aug 29 10:02:26 2016 +0000
+++ b/main.cpp	Mon Aug 29 20:03:29 2016 +0900
@@ -34,7 +34,7 @@
 
 //char buffer[512*1]  __attribute__ ((aligned (4))) ;    /*   512 byte */
 //char buffer[512*2]  __attribute__ ((aligned (4))) ;    /*  1024 byte */
-char buffer[512*4]  __attribute__ ((aligned (4))) ;    /*  2028 byte */
+char buffer[512*4]  __attribute__ ((aligned (4))) ;    /*  2048 byte */
 //char buffer[512*8]  __attribute__ ((aligned (4))) ;    /*  4096 byte */
 //char buffer[512*16] __attribute__ ((aligned (4))) ;    /*  8192 byte */
 //char buffer[512*32] __attribute__ ((aligned (4))) ;    /* 16384 byte */