Suga koubou / Mbed 2 deprecated sdhc_speed_test

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependencies:   FatFileSystemCpp SDHC_FileSystem mbed

Diff: main.cpp

Revision:
1:2b18f6628bc1
Parent:
0:58238bb83503
--- a/main.cpp	Fri Feb 08 01:42:33 2013 +0000
+++ b/main.cpp	Fri Feb 08 03:12:56 2013 +0000
@@ -1,18 +1,18 @@
 #include "mbed.h"
 #include "SDHCFileSystem.h"
 
-#define SIZE 10240 // KB
+#define SIZE 1024 // KB
 
 Serial pc(USBTX, USBRX);
 DigitalOut myled(LED1);
 SDFileSystem sd(p5, p6, p7, p8, "sd");
-Timer t;
 
 float wtest (int b, int d) {
     int i;
     int s = b / d;
     char buf[d];
     FILE *fp;
+    Timer t;
 
     fp = fopen("/sd/sdhc_test.dat", "w");
     if (!fp) return 0;
@@ -33,8 +33,9 @@
     int s = b / d;
     char buf[d];
     FILE *fp;
+    Timer t;
 
-    fp = fopen("/sd/test.dat", "r");
+    fp = fopen("/sd/sdhc_test.dat", "r");
     if (!fp) return 0;
     myled = 1;
     t.reset();
@@ -53,12 +54,14 @@
     pc.baud(115200);
     pc.printf("start\r\n");
 
-    pc.printf("write   1: %f KB/sec\r\n", (float)SIZE / wtest(SIZE * 1024, 1));
-    pc.printf("read    1: %f KB/sec\r\n", (float)SIZE / rtest(SIZE * 1024, 1));
-    pc.printf("write 100: %f KB/sec\r\n", (float)SIZE / wtest(SIZE * 1024, 100));
-    pc.printf("read  100: %f KB/sec\r\n", (float)SIZE / rtest(SIZE * 1024, 100));
-    pc.printf("write 10k: %f KB/sec\r\n", (float)SIZE / wtest(SIZE * 1024, 10000));
-    pc.printf("read  10k: %f KB/sec\r\n", (float)SIZE / rtest(SIZE * 1024, 10000));
+    if (sd.disk_initialize()) return -1;
+
+    pc.printf("write   1: %f KB/sec\r\n", (double)SIZE / wtest(SIZE * 1024, 1));
+    pc.printf("read    1: %f KB/sec\r\n", (double)SIZE / rtest(SIZE * 1024, 1));
+    pc.printf("write 100: %f KB/sec\r\n", (double)SIZE / wtest(SIZE * 1024, 100));
+    pc.printf("read  100: %f KB/sec\r\n", (double)SIZE / rtest(SIZE * 1024, 100));
+    pc.printf("write 10k: %f KB/sec\r\n", (double)SIZE / wtest(SIZE * 1024, 10000));
+    pc.printf("read  10k: %f KB/sec\r\n", (double)SIZE / rtest(SIZE * 1024, 10000));
 
     return 0;
 }