Diff: sd-driver/features/TESTS/examples/example1/example1.cpp

Revision:

0:f1d3878b8dd9

diff -r 000000000000 -r f1d3878b8dd9 sd-driver/features/TESTS/examples/example1/example1.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sd-driver/features/TESTS/examples/example1/example1.cpp	Sat Apr 08 14:45:51 2017 +0000
@@ -0,0 +1,80 @@
+#include "mbed.h"
+#include "FATFileSystem.h"
+#include "SDBlockDevice.h"
+#include <stdio.h>
+#include <errno.h>
+/* mbed_retarget.h is included after errno.h so symbols are mapped to
+ * consistent values for all toolchains */
+#include "platform/mbed_retarget.h"
+
+
+SDBlockDevice sd(MBED_CONF_APP_SPI_MOSI, MBED_CONF_APP_SPI_MISO, MBED_CONF_APP_SPI_CLK, MBED_CONF_APP_SPI_CS);
+FATFileSystem fs("sd", &sd);
+
+void return_error(int ret_val){
+  if (ret_val)
+    printf("Failure. %d\n", ret_val);
+  else
+    printf("done.\n");
+}
+
+void errno_error(void* ret_val){
+  if (ret_val == NULL)
+    printf(" Failure. %d \n", errno);
+  else
+    printf(" done.\n");
+}
+
+int main()
+{
+	int error = 0;
+	printf("Welcome to the filesystem example.\n");
+
+	printf("Opening a new file, numbers.txt.");
+	FILE* fd = fopen("/sd/numbers.txt", "w+");
+	errno_error(fd);
+
+	for (int i = 0; i < 20; i++){
+		printf("Writing decimal numbers to a file (%d/20)\r", i);
+		fprintf(fd, "%d\n", i);
+	}
+	printf("Writing decimal numbers to a file (20/20) done.\n");
+
+	printf("Closing file.");
+	fclose(fd);
+	printf(" done.\n");
+
+	printf("Re-opening file read-only.");
+	fd = fopen("/sd/numbers.txt", "r");
+	errno_error(fd);
+
+	printf("Dumping file to screen.\n");
+	char buff[16] = {0};
+	while (!feof(fd)){
+		int size = fread(&buff[0], 1, 15, fd);
+		fwrite(&buff[0], 1, size, stdout);
+	}
+	printf("EOF.\n");
+
+	printf("Closing file.");
+	fclose(fd);
+	printf(" done.\n");
+
+	printf("Opening root directory.");
+	DIR* dir = opendir("/sd/");
+	errno_error(fd);
+
+	struct dirent* de;
+	printf("Printing all filenames:\n");
+	while((de = readdir(dir)) != NULL){
+		printf("  %s\n", &(de->d_name)[0]);
+	}
+
+	printf("Closeing root directory. ");
+	error = closedir(dir);
+	return_error(error);
+	printf("Filesystem Demo complete.\n");
+
+	while (true) {}
+}
+