fat.Init

#include <file_config.h>

BOOL Init  (
     U32 mode);      /* Initialization mode */

The function Init initializes the FAT driver. The parameter mode specifies the initialization mode and can have the following values:

The function is part of the FAT driver. The prototype is defined in the file File_Config.h. Developers must customize the function.

The function is invoked twice by the function finit on system startup. First, with the argument DM_IO to initialize the peripherals, system clocks, configure interrupts, ... Second, with the argument DM_MEDIA.

In the MSD Driver, this function initializes the USB host stack and USB host controller hardware and allows enumeration of USB MSC Devices if such a device is connected to the USB host bus.

• __TRUE - on success.
• __FALSE - on failure.

fat.DeviceCtrl, fat.ReadInfo, fat.ReadSect, fat.UnInit, fat.WriteSect

/* USB-MSC Device Driver Control Block */
FAT_DRV usb0_drv = {
  Init,
  UnInit,
  ReadSector,
  WriteSector,
  ReadInfo,
  CheckMedia
};

/* Initialize USB Host. */
static BOOL Init (U32 mode)  {
  U32 cnt;

  if (mode == DM_IO)  {
    media_ok = __FALSE;
    return (usbh_init());                       /* Initialize USB hardware. */
  }

  if (mode == DM_MEDIA)  {
    for (cnt = 0; cnt < 1000; cnt++)  {
      usbh_engine();
      if (usbh_msc_status () == __TRUE)  {
        media_ok = __TRUE;
        return (__TRUE);
      }
      Delay (500);
    }
  }
  return (__FALSE);
}