mi mi
first
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
NUCLEO-L152RE
About 1MBytes/sec
Diff: main.cpp
- Revision:
- 20:e34f5e5f307b
- Parent:
- 18:5fb42182d85d
- Child:
- 21:6253a88675a5
--- a/main.cpp Tue Aug 30 20:15:36 2016 +0900
+++ b/main.cpp Tue Aug 30 20:17:00 2016 +0900
@@ -22,10 +22,10 @@
* (default is 1 (SPI1))
*/
#include "spi_device.h"
-
#define UART_KEY_PRESS 1
#define SPI_CLOCK_HZ ( 12 * 1000000 )
+
Timer timer;
//Serial pc(PA_9,PA_10);
Serial pc(USBTX,USBRX);
@@ -41,19 +41,19 @@
#define X_MEGA_BYTE ((1)*1024*1024) /* 1Mbyte */
#define FILE_NAME "GPATH"
+
void wait_key_press(){
#if UART_KEY_PRESS
pc.printf("\n-- Select 'r' or 'w' --\n");
fflush(stdout);
while(!pc.readable());
volatile int res = pc.getc();
-#else
-
#endif
}
void writeTest()
{
+#if !_FS_READONLY
//Test write performance by creating a 1MB file
pc.printf("[Write]: Testing %d byte buffer: write performance...", sizeof(buffer));
fflush(stdout);
@@ -82,6 +82,7 @@
} else {
pc.printf("failed to create file!\n");
}
+#endif
}
void readTest()