fs_drv.c

ARM_CORTEX-M3应用实例开发详解光盘

/**************************************************************************
* 文件名          : fs_drv.c
* 功能描述        : RTOS下的文件系统支持
**************************************************************************/

/* Includes -----------------------------------------------------------------*/
#include <stdio.h>
#include "ucos_ii.h"
#include "ff.h"
#include "fs_drv.h"

/* Variables ----------------------------------------------------------------*/


/*=============================================================================
* Function	: 
* Description	: 
* Input Para	: 
* Output Para	: 
* Return Value  : 
=============================================================================*/
int fs_init(FATFS* fs) {
	if (FR_OK != f_mount(1, fs)) {
		printf("\r\nMount SD Card fs error");
		return -1;
	}
	return 0;
}

#if 0
DWORD WaitForSingleObject(
  HANDLE hHandle,        // handle to object to wait for
  DWORD dwMilliseconds   // time-out interval in milliseconds
) {
	INT8U err;

	OSMutexPend(hHandle, OS_TICKS_PER_SEC * dwMilliseconds / 1000, &err);
	if (err != OS_ERR_NONE) {
		return WAIT_TIMEOUT;
	}
	return WAIT_OBJECT_0;
}

BOOL ReleaseMutex(
  HANDLE hMutex   // handle to mutex object
) {
	INT8U err;

	err = OSMutexPost(hMutex);
	if (err != OS_ERR_NONE) {
		return FALSE;
	}
	return TRUE;
}

BOOL CloseHandle(
  HANDLE hObject   // handle to object to close
) {
	INT8U err;

	OSMutexDel(hObject, OS_DEL_ALWAYS, &err);
	if (err != OS_ERR_NONE) {
		return FALSE;
	}
	return TRUE;
}

HANDLE CreateMutex(
  void* lpMutexAttributes,
                       // pointer to security attributes
  BOOL bInitialOwner,  // flag for initial ownership
  const char* lpName       // pointer to mutex-object name
) {
	INT8U err;
	HANDLE h;

	h = OSMutexCreate(APP_TASK_MP3_PRIO - 1, &err);
	if (0
	|| (err != OS_ERR_NONE)
	|| (h == NULL)
	) {
		return NULL;
	}

	return h;
}
#endif

/************************************END OF FILE******************************/