mci.Init

#include <file_config.h>

BOOL Init  (
     void);

The function Init initializes the Memory Card Interface controller.

The function is part of the MCI Driver. The prototype is defined in the file File_Config.h. Developers have to customize the function.

Init is invoked by the function finit at system startup and when SD/MMC Flash Memory Card Hot Swapping is used.

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

mci.BusMode, mci.BusSpeed, mci.BusWidth, mci.CheckMedia, mci.Command, mci.Delay, mci.ReadBlock, mci.SetDma, mci.UnInit, mci.WriteBlock

/* MCI Device Driver Control Block */
MCI_DRV mci0_drv = {
  Init,
  UnInit,
  Delay,
  BusMode,
  BusWidth,
  BusSpeed,
  Command,
  ReadBlock,
  WriteBlock,
  NULL,
  CheckMedia
};

/* Initialize MCI interface. */
static BOOL Init (void) {

  PCONP   |=  0x30000000;           /* Power Up the MCI and DMA controller. */

  SCS     |=        0x08;           /* MCIPWR pin is active high.                   */
                                    /* Required for the silicon rev. 'B' and later. */

  PINSEL1 &= ~0x00003FC0;           /* Enable MCI pins. */
  PINSEL1 |=  0x00002A80;
  PINSEL4 &= ~0x0FC00000;
  PINSEL4 |=  0x0A800000;

  MCI_COMMAND   = 0;                /* Clear all pending interrupts. */
  MCI_DATA_CTRL = 0;
  MCI_CLEAR     = 0x7FF;

  MCI_POWER  = 0x02;                /* Power up, switch on VCC for the Flash Card. */
  Delay (10000);

  MCI_POWER |= 0x01;                /* Power on the Flash Card. */

  return (__TRUE);
}