Andrew Tergis / Mbed 2 deprecated SDFileSystem_test

This is a simple benchmark of the SDFileSystem module. This will attempt to write bytes to the SD card, and will time the operation and display the bits/sec.

Dependencies:   mbed

Diff: main.cpp

Revision:
0:5e7c5b7321c9
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Feb 14 22:12:09 2011 +0000
@@ -0,0 +1,53 @@
+#include "mbed.h"
+
+#include "SDFileSystem.h"
+
+Serial pc(USBTX, USBRX); // tx, rx
+Serial device(p28, p27);  // tx, rx
+DigitalOut myled(LED4);
+SDFileSystem sd(p11, p12, p13, p14, "sd");
+
+long before;
+long after;
+char samp[3];
+char buff[100];
+Timer t;
+
+int getSample();
+void flush();
+
+int main() {
+    FILE *header;
+
+    pc.baud(19200);
+    device.baud(9600);
+    
+    while(1) {
+        memset(buff,'\0',10);
+        pc.printf("\r\nHow many bits would you like to test? ");
+        char temp = '\0';
+        char idx = 0;
+        while (temp != '\r'){
+            temp = pc.getc();
+            buff[idx] = temp;
+            pc.putc(temp);
+            idx++;
+        }
+        long num = atol(buff);
+        pc.printf("testing %d bits",num);
+        t.start();
+        header = fopen("/sd/config.txt","w");
+        myled = 1;
+        before = t.read_us();
+        unsigned char val = 0;
+        for (unsigned long i=0;i<num;i++){
+                fputc(val,header);
+                val++;
+        }
+        after = t.read_us();
+        fclose(header);
+        myled = 0;
+        pc.printf("\r\nIt took %d microseconds to write %d\r\n",(after-before),num);
+        pc.printf("aka, a rate of %f bits/sec\r\n",(float)num/((float)(after-before)/1000000));      
+    }
+}
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