Yuki Abe
Make sure the speed of writing to microSD.
Dependencies: SDFileSystem mbed
Revision 0:b179d330bb2e, committed 2017-05-30
- Comitter:
- aaaaaYukiaaaaa
- Date:
- Tue May 30 04:56:42 2017 +0000
- Commit message:
- This program is making sure the speed of writing to microSD.
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SDFileSystem.lib Tue May 30 04:56:42 2017 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/SDFileSystem/#c8f66dc765d4
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue May 30 04:56:42 2017 +0000
@@ -0,0 +1,88 @@
+#include "mbed.h"
+#include "SDFileSystem.h"
+
+SDFileSystem sd(p5, p6, p7, p8, "sd"); // the pinout on the mbed Cool Components workshop board
+DigitalIn enable(p30);
+AnalogIn inpt(p20);
+DigitalOut myled(LED1);
+
+//float Log[16]={};
+
+ Timer SDspeed;
+
+void SD(int num, float btry, float time, float stack_time){
+ myled = 1;
+
+// printf("Hello World!\n");
+
+ mkdir("/sd/mydir", 0777);
+
+
+ SDspeed.start();
+
+ FILE *fp_csv = fopen("/sd/mydir/SDtestSpeed.csv", "a");
+ if(fp_csv == NULL) {
+ error("Could not open file for write\n");
+ }
+
+ fprintf(fp_csv, "%d,%f,%.5f, %.5f\n", num, btry, time, stack_time);
+
+ fclose(fp_csv);
+
+ SDspeed.stop();
+
+
+ /////////////////
+
+// FILE *fp_txt = fopen("/sd/mydir/sdtest.txt", "a");
+// if(fp_txt == NULL) {
+// error("Could not open file for write\n");
+// }
+// fprintf(fp_txt, "Hello fun SD Card World!\n");
+// fprintf(fp_txt, "Hello fun SD Card World!\n");
+// fprintf(fp_txt, "%f,%f\n", btry, (float)num);
+//
+// fclose(fp_txt);
+
+
+ printf("Goodbye World!\n");
+ myled = 0;
+}
+
+int main() {
+ float btry_lg = 0;
+ int nmbr_lg = 0;
+ float wrt_SD_time = 0;
+ float sec = 0;
+
+ FILE *fp_csv = fopen("/sd/mydir/SDtestSpeed.csv", "w");
+ if(fp_csv == NULL) {
+ error("Could not open file for write\n");
+ }
+ fprintf(fp_csv, "number, battery, time\n");
+ fclose(fp_csv);
+
+ while(1){
+ // test the voltage on the initialized analog pin
+ // and if greater than 0.3 * VCC set the digital pin
+ // to a logic 1 otherwise a logic 0
+ btry_lg = inpt.read()*3.3;
+
+ //if(ain > 0.3f) {
+ //} else {
+ //}
+
+ // print the percentage and 16 bit normalized values
+ //printf("percentage: %3.3f%%\n", ain.read()*100.0f);
+ //printf("normalized: 0x%04X \n", ain.read_u16());
+ //wait(0.2f);
+
+ nmbr_lg++;
+
+ SD(nmbr_lg, btry_lg, wrt_SD_time, sec);
+ wrt_SD_time = SDspeed.read();
+ sec += wrt_SD_time;
+
+ wait_us(10);
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue May 30 04:56:42 2017 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/63cdd78b2dc1 \ No newline at end of file