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33 results

col_defaultdict.py

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  • Forked from card10 / firmware
    Source project has a limited visibility.
    ffsystem.c 3.79 KiB
    /*------------------------------------------------------------------------*/
    /* Sample code of OS dependent controls for FatFs                         */
    /* (C)ChaN, 2017                                                          */
    /*------------------------------------------------------------------------*/
    
    
    #include "ff.h"
    
    
    
    #if FF_USE_LFN == 3	/* Dynamic memory allocation */
    
    /*------------------------------------------------------------------------*/
    /* Allocate a memory block                                                */
    /*------------------------------------------------------------------------*/
    
    void* ff_memalloc (	/* Returns pointer to the allocated memory block (null on not enough core) */
    	UINT msize		/* Number of bytes to allocate */
    )
    {
    	return malloc(msize);	/* Allocate a new memory block with POSIX API */
    }
    
    
    /*------------------------------------------------------------------------*/
    /* Free a memory block                                                    */
    /*------------------------------------------------------------------------*/
    
    void ff_memfree (
    	void* mblock	/* Pointer to the memory block to free */
    )
    {
    	free(mblock);	/* Free the memory block with POSIX API */
    }
    
    #endif
    
    
    
    #if FF_FS_REENTRANT	/* Mutal exclusion */
    
    /* we're providing a dummy implementation here, these functions
     * are to be overridden in the main application (see ffsupport.c)
     */
    
    /*------------------------------------------------------------------------*/
    /* Create a Synchronization Object */
    /*------------------------------------------------------------------------*/
    /* This function is called in f_mount() function to create a new
    /  synchronization object for the volume, such as semaphore and mutex.
    /  When a 0 is returned, the f_mount() function fails with FR_INT_ERR.
    */
    
    static int s_notAMutex;
    
    __attribute__((weak)) int ff_cre_syncobj (	/* 1:Function succeeded, 0:Could not create the sync object */
    	BYTE vol,			/* Corresponding volume (logical drive number) */
    	FF_SYNC_t *sobj		/* Pointer to return the created sync object */
    )
    {
    	(void) vol;
    	*sobj = (FF_SYNC_t)&s_notAMutex;
    	return 1;
    }
    
    
    /*------------------------------------------------------------------------*/
    /* Delete a Synchronization Object                                        */
    /*------------------------------------------------------------------------*/
    /* This function is called in f_mount() function to delete a synchronization
    /  object that created with ff_cre_syncobj() function. When a 0 is returned,
    /  the f_mount() function fails with FR_INT_ERR.
    */
    
    __attribute__((weak)) int ff_del_syncobj (	/* 1:Function succeeded, 0:Could not delete due to an error */
    	FF_SYNC_t sobj		/* Sync object tied to the logical drive to be deleted */
    )
    {
    	(void) sobj;
    	return 1;
    }
    
    
    /*------------------------------------------------------------------------*/
    /* Request Grant to Access the Volume                                     */
    /*------------------------------------------------------------------------*/
    /* This function is called on entering file functions to lock the volume.
    /  When a 0 is returned, the file function fails with FR_TIMEOUT.
    */
    
    __attribute__((weak)) int ff_req_grant (	/* 1:Got a grant to access the volume, 0:Could not get a grant */
    	FF_SYNC_t sobj	/* Sync object to wait */
    )
    {
    	(void) sobj;
    	return 1;
    }
    
    
    /*------------------------------------------------------------------------*/
    /* Release Grant to Access the Volume                                     */
    /*------------------------------------------------------------------------*/
    /* This function is called on leaving file functions to unlock the volume.
    */
    
    __attribute__((weak)) void ff_rel_grant (
    	FF_SYNC_t sobj	/* Sync object to be signaled */
    )
    {
    	(void) sobj;
    }
    
    #endif