fopen cannot write memroy card

I use lpc4357, and config file system & usb0 following the demo code of MCB4300. The usb seems work, for I can read/write file via the usb interface. When I create file failed by calling fopen...
fopen cannot write memroy card

I use lpc4357, and config file system & usb0 following the demo code of MCB4300. The usb seems work, for I can read/write file via the usb interface. When I create file failed by calling fopen...
Problem in using fopen function

I have added the code.Calling init_filesystem() initializes and mounts the RAM drive successfully and turns the corresponding pins of PORT2 HIGH.This happens so if am not calling the tst_fopen() function...
Problem in using fopen function

I have added the code.Calling init_filesystem() initializes and mounts the RAM drive successfully and turns the corresponding pins of PORT2 HIGH.This happens so if am not calling the tst_fopen() function...
fopen problem

Hi!! I have problem with fopen funciton. I'm using MCB2300 (lpc2378). When I use SD_File examle its work's fine. Now I'm doing my project, I have proglem. I could incialize SD card, but I can't open...