Demo to read and write to both SD and USB File System
Example (more detailed example in the main.cpp file):
#include "mbed.h" #include "MSCFileSystem.h" #include "SDFileSystem.h" MSCFileSystem fs("fs"); SDFileSystem sd(p5, p6, p7, p8, "sd", p11, SDFileSystem::SWITCH_NEG_NO, 15000000); // CAUTION: Return values should ALWAYS be checked. Not shown here for brevity. int main() { ... FileHandle * sdfile = sd.open("test.txt", O_WRONLY | O_CREAT | O_TRUNC); sdfile->write("hello", 6); sdfile->close(); ... FILE * file = fopen("nextest.txt", "w"); fwrite(buffer, 1, sizeof(buffer), file); fclose(file); ... mkdir("/sd/sd_dir", 0777); mkdir("/fs/fs_dir", 0777); remove("/sd/sdfinal.log"); rename("/sd/sdfinal.txt", "/sd/sdfinal.log"); ... }
main.cpp@2:c887cf1c3ed9, 2012-10-16 (annotated)
- Committer:
- chris
- Date:
- Tue Oct 16 15:47:35 2012 +0000
- Revision:
- 2:c887cf1c3ed9
- Parent:
- 0:22a5db2c7926
- Child:
- 3:a72f30142261
Adapted from USBFlashDiskTest
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
chris | 2:c887cf1c3ed9 | 1 | #include "mbed.h" |
chris | 2:c887cf1c3ed9 | 2 | #include "MSCFileSystem.h" |
chris | 2:c887cf1c3ed9 | 3 | |
chris | 2:c887cf1c3ed9 | 4 | MSCFileSystem fs("fs"); |
chris | 2:c887cf1c3ed9 | 5 | DigitalOut led(LED1); |
chris | 2:c887cf1c3ed9 | 6 | AnalogIn pot1(p19); |
chris | 2:c887cf1c3ed9 | 7 | |
chris | 2:c887cf1c3ed9 | 8 | int main() |
chris | 2:c887cf1c3ed9 | 9 | { |
chris | 2:c887cf1c3ed9 | 10 | FILE *fp = fopen("/fs/test.csv","w"); |
chris | 2:c887cf1c3ed9 | 11 | printf("Create filehandle for test.csv\n"); |
chris | 2:c887cf1c3ed9 | 12 | |
chris | 2:c887cf1c3ed9 | 13 | printf("Writing to file\n"); |
chris | 2:c887cf1c3ed9 | 14 | for (int i=0; i<100; i++) { |
chris | 2:c887cf1c3ed9 | 15 | fprintf(fp,"%.2f\n",pot1.read()); |
chris | 2:c887cf1c3ed9 | 16 | wait(0.05); |
chris | 2:c887cf1c3ed9 | 17 | led=!led; |
chris | 2:c887cf1c3ed9 | 18 | } |
chris | 2:c887cf1c3ed9 | 19 | |
chris | 2:c887cf1c3ed9 | 20 | fclose(fp); |
chris | 2:c887cf1c3ed9 | 21 | printf("Close the handle\n"); |
chris | 2:c887cf1c3ed9 | 22 | led=1; |
chris | 2:c887cf1c3ed9 | 23 | } |