Nuvoton
/
NuMaker-mbed-SD-FileSystem-example
NuMaker SD-File-System with SD mode
Diff: main.cpp
- Revision:
- 1:2fb056322926
- Parent:
- 0:2ec42a097d17
- Child:
- 2:ee10b396e545
--- a/main.cpp Tue Mar 14 06:34:01 2017 +0000 +++ b/main.cpp Wed Mar 15 11:52:57 2017 +0800 @@ -1,7 +1,82 @@ #include "mbed.h" +#include "FATFileSystem.h" +#include "NuSDBlockDevice.h" +#include <stdio.h> +#include <errno.h> + +NuSDBlockDevice bd; +FATFileSystem fs("fs"); + +void return_error(int ret_val){ + if (ret_val) + printf("Failure. %d\r\n", ret_val); + else + printf("done.\r\n"); +} + +void errno_error(void* ret_val){ + if (ret_val == NULL) + printf(" Failure. %d \r\n", errno); + else + printf(" done.\r\n"); +} int main() { - // TO BE CONTINUED - return 0; + int error = 0; + printf("Welcome to the filesystem example.\r\n" + "Formatting a FAT, SD-backed filesystem. "); + error = FATFileSystem::format(&bd); + return_error(error); + + printf("Mounting the filesystem on \"/fs\". "); + error = fs.mount(&bd); + return_error(error); + + printf("Opening a new file, numbers.txt."); + FILE* fd = fopen("/fs/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\r\n", i); + } + printf("Writing decimal numbers to a file (20/20) done.\r\n"); + + printf("Closing file."); + fclose(fd); + printf(" done.\r\n"); + + printf("Re-opening file read-only."); + fd = fopen("/fs/numbers.txt", "r"); + errno_error(fd); + + printf("Dumping file to screen.\r\n"); + char buff[16] = {0}; + while (!feof(fd)){ + int size = fread(&buff[0], 1, 15, fd); + fwrite(&buff[0], 1, size, stdout); + } + printf("EOF.\r\n"); + + printf("Closing file."); + fclose(fd); + printf(" done.\r\n"); + + printf("Opening root directory."); + DIR* dir = opendir("/fs/"); + errno_error(fd); + + struct dirent* de; + printf("Printing all filenames:\r\n"); + while((de = readdir(dir)) != NULL){ + printf(" %s\r\n", &(de->d_name)[0]); + } + + printf("Closeing root directory. "); + error = closedir(dir); + return_error(error); + printf("Filesystem Demo complete.\r\n"); + + while (true) {} }