Diff: libraries/tests/mbed/stdio_benchmark/main.cpp

Revision:

0:6c56fb4bc5f0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libraries/tests/mbed/stdio_benchmark/main.cpp	Fri Nov 04 20:27:58 2016 +0000
@@ -0,0 +1,39 @@
+#include "mbed.h"
+
+#if !DEVICE_LOCALFILESYSTEM
+  #error [NOT_SUPPORTED] LocalFileSystem not supported
+#endif
+
+#define TEST_STDIO 0
+
+int main() {
+    printf("\r\n\r\n*** Start of memory write test (2K bytes) ***\r\n");
+
+    // dummy data
+    char buf[2048];
+    int index = 0;
+    for (index = 0; index < 2048; index++) {
+        buf[index] = ~index & 0xFF;
+    }
+
+    // Run the timed write test
+    float starttime, duration;
+    Timer t;
+    t.start();
+    starttime = t.read();
+
+#if TEST_STDIO
+    LocalFileSystem local("local");
+    FILE *fp = fopen("/local/test.dat", "w");
+    fwrite(buf, sizeof(buf[0]), sizeof(buf)/sizeof(buf[0]), fp);
+    fclose(fp);
+#else
+    FILEHANDLE fh = local_file_open("test.dat", O_WRONLY);
+    LocalFileHandle lfh(fh);
+    lfh.write(buf, sizeof(buf));
+    lfh.close();
+#endif
+
+    duration = t.read() - starttime;
+    printf("Write completed in %.2f seconds. Average throughput = %.0f bytes/second.\r\n", duration, 2048/duration);
+}