Ryota Nakamura
Nucleo F3030K8とSDカードスロットを用いた処理時間の測定
Dependencies: SDFileSystem mbed
Revision 0:e07fa2de601f, committed 2017-02-09
- Comitter:
- RyotaNakamura
- Date:
- Thu Feb 09 11:04:01 2017 +0000
- Commit message:
- Nucleo F303K8?SD??????????????????
Changed in this revision
diff -r 000000000000 -r e07fa2de601f SDFileSystem.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SDFileSystem.lib Thu Feb 09 11:04:01 2017 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/neilt6/code/SDFileSystem/#e4d2567200db
diff -r 000000000000 -r e07fa2de601f main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Feb 09 11:04:01 2017 +0000
@@ -0,0 +1,57 @@
+/*
+説明
+Nucleo-F303K8とMicroSDを使ったデータ保存のサンプルプログラム
+
+以下ピン配置
+Nucleo SDモジュール
+GND-----VSS-----------0V
++3V3----VDD
+D11-----CMD
+D12-----DAT0
+D13-----CLK
+D9------CD
+*/
+
+#include "mbed.h"
+#include "SDFileSystem.h"
+
+SDFileSystem sd(D11, D12, D13, D9, "sd"); // the pinout on the mbed Cool Components workshop board
+Serial pc(USBTX, USBRX);
+Timer timer1; //SD open
+Timer timer2; //SD 1byte wrinting
+Timer timer3; //SD 8byte writing
+Timer timer4; //SD close
+
+int main(){
+ int miri=1000;
+
+ timer1.reset();
+ timer1.start();
+ FILE *fp = fopen("/sd/sdtest.txt", "w");
+ timer1.stop();
+ float t1=timer1.read();
+ float time1=t1*miri;
+
+ timer2.reset();
+ timer2.start();
+ fprintf(fp, "0"); //1byte writing
+ timer1.stop();
+ float t2=timer2.read();
+ float time2=t2*miri;
+
+ timer3.reset();
+ timer3.start();
+ fprintf(fp,"12345678"); //8byte writing
+ timer1.stop();
+ float t3=timer3.read();
+ float time3=t3*miri;
+
+ timer4.reset();
+ timer4.start();
+ fclose(fp);
+ timer4.stop();
+ float t4=timer4.read();
+ float time4=t4*miri;
+ pc.printf("time1= %f ms\ntime2= %f ms\ntime3= %f ms\ntime4= %f ms\n",time1,time2,time3,time4);
+ free(fp);
+}
\ No newline at end of file
diff -r 000000000000 -r e07fa2de601f mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Feb 09 11:04:01 2017 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/176b8275d35d \ No newline at end of file