Diff: main.cpp

Revision:

11:d5fc11ac948a

Parent:

10:5f6fc7dc119b

Child:

12:dfa39c797789

--- a/main.cpp	Sat Feb 20 14:04:54 2016 +0900
+++ b/main.cpp	Sun Feb 21 21:25:55 2016 +0900
@@ -27,11 +27,12 @@
 
 #define SPI_CLOCK_HZ    ( 12 * 1000000 ) 
 Timer timer;
+
 Serial pc(USBTX,USBRX);
 
 SDFileSystem sd( MOSI, MISO, SCLK, CS, "sd", SPI_CLOCK_HZ);  
 
-char buffer[512];
+char buffer[512] __attribute__ ((aligned (4))) ;
 #define X_MEGA_BYTE     ((1)*1024*1024) /* 1Mbyte */
 #define FILE_NAME   "GPATH"
 void wait_key_press(){
@@ -48,7 +49,7 @@
 void writeTest()
 {
     //Test write performance by creating a 1MB file
-    pc.printf("[Write]: Testing %dByte buffer: write performance...", sizeof(buffer));
+    pc.printf("[Write]: Testing %d byte buffer: write performance...", sizeof(buffer));
     fflush(stdout); 
     FileHandle* file = sd.open(FILE_NAME, O_WRONLY | O_CREAT | O_TRUNC);
     if (file != NULL) {
@@ -77,7 +78,7 @@
 void readTest()
 {
     //Test read performance by reading the 1MB file created by writeTest()
-    pc.printf("[Read]: Testing %dByte buffer: read performance...", sizeof(buffer));
+    pc.printf("[Read]: Testing %d byte buffer: read performance...", sizeof(buffer));
     fflush(stdout); 
     FileHandle* file = sd.open(FILE_NAME, O_RDONLY);
     if (file != NULL) {
@@ -105,14 +106,14 @@
 
 int main(){
     /* UART Baudrate is 9600bps*/
-	while(1){
-		pc.printf("\nSysClock= %d Hz", SystemCoreClock);
+    while(1){
+		pc.printf("\n---------------------------------------");
+		pc.printf("\nSPI(%d), SysClock= %d Hz",SPI_DEV, SystemCoreClock);
 		pc.printf("   mbed rev.%d", MBED_LIBRARY_VERSION);
-		pc.printf("\nStart SD card accsess test!");
-		pc.printf("\n  SPI(%d) device",SPI_DEV);
+        pc.printf("\nStart SD card accsess test!");
 		pc.printf("\n[r]: Start Read Test. At least execute [w] onece");
 		pc.printf("\n[w]: Start Write and Read Test");
-		pc.printf("\nWriting is very slow, wait tens of seconds."); 
+        pc.printf("\nWriting is very slow, wait tens of seconds."); 
 		pc.printf("\n-- Select [r] or [w] --\n");  
 		fflush(stdout); 
 		while(!pc.readable());
@@ -120,9 +121,9 @@
 		if( ch =='r' ){
 			readTest();
 		} else if( ch =='w' ){
-			writeTest();
-			readTest();
+        writeTest();
+        readTest();
 		}
-	}
+    }
 }