ECE 4180
SD card open and close
Dependencies: mbed 4180-L2-P13
Revision 0:0167d43aad96, committed 2021-03-09
- Comitter:
- glanier9
- Date:
- Tue Mar 09 16:11:35 2021 +0000
- Commit message:
- Final version
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SDFileSystem.lib Tue Mar 09 16:11:35 2021 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/teams/ECE-41801234/code/4180-L2-P13/#628e794eb35d
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue Mar 09 16:11:35 2021 +0000
@@ -0,0 +1,57 @@
+#include "mbed.h"
+#include "SDFileSystem.h"
+
+SDFileSystem sd(p5, p6, p7, p8, "sd"); // the pinout on the mbed Cool Components workshop board
+Serial pc(USBTX, USBRX);
+LocalFileSystem chip("uc");\
+
+int main() {
+ FILE * pFile;
+ long lSize;
+ char * buffer;
+ size_t result;
+
+ printf("Hello World!\n");
+
+ mkdir("/sd/mydir", 0777);
+
+ FILE *fp = fopen("/sd/mydir/sdtest.txt", "w");
+ if(fp == NULL) {
+ error("Could not open file for write\n");
+ }
+ fprintf(fp, "Hello SD File World!");
+ fclose(fp);
+
+ printf("Goodbye World!\n");
+
+ pFile = fopen("/sd/mydir/sdtest.txt", "r");
+ if (pFile==NULL) {
+ fputs ("File error",stderr);
+ exit (1);
+ }
+ // obtain file size:
+ fseek (pFile , 0 , SEEK_END);
+ lSize = ftell (pFile);
+ rewind (pFile);
+ pc.printf("File Size: %d\n",lSize);
+
+ buffer = (char*) malloc (sizeof(char)*lSize);
+ if (buffer == NULL) {
+ fputs ("Memory error",stderr);
+ exit (2);
+ }
+
+ // copy the file into the buffer:
+ result = fread (buffer,1,lSize,pFile);
+ if (result != lSize) {
+ fputs ("Reading error",stderr);
+ exit (3);
+ }
+ pc.printf("%s",buffer);
+ /* the whole file is now loaded in the memory buffer. */
+ fclose (pFile);
+ free (buffer);
+ return 0;
+
+
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue Mar 09 16:11:35 2021 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400 \ No newline at end of file