_old_main.c

MMC/SD on Olimex Sam7-EX256

#include "include/include.h"

extern char mmc_buffer[512];

AT91PS_PIO    m_pPio   = AT91C_BASE_PIOA;

void Delay (unsigned long var){
	while(--var != 0) ;
}

/*-----------------------------------------------------------------------------
 *-----------------------------------------------------------------------------*/
static void ConfigureIO (void){
	// for LCD Backlight
	AT91C_BASE_PIOB->PIO_OER = (AT91B_LCD_BL);		// set to output
	AT91C_BASE_PIOB->PIO_PER = (AT91B_LCD_BL);		// set to PIO mode
	AT91C_BASE_PIOB->PIO_PPUDR = (AT91B_LCD_BL);	// disable pull up

	AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_PIOA);	// enable periph clock for PIO controller
	AT91C_BASE_PIOA->PIO_ODR = (AT91A_JS_ALL);			// set PIO line to input
	
	AT91C_BASE_PIOB->PIO_ODR = SW1 | SW2; //Configure as Input
	AT91C_BASE_PIOB->PIO_PER = SW1 | SW2; //Enable pin
}

int main()
{
	const double wait = 1650000;

	ConfigureIO();
	AT91C_BASE_PMC->PMC_PCER = ( 1 << AT91C_ID_PIOA ) | ( 1 << AT91C_ID_PIOB ) | ( 1 << AT91C_ID_US0 );
	
  	uart0_init();
  	uart0_puts("\n\nINIT...OK\n");
  	
  	Init_CP_WP();
  	uart0_puts("CP, WP...OK\n");
  
  //CP - card present
  /*uart0_puts("WP present? ");

  while(((AT91C_BASE_PIOB->PIO_PDSR) & SW1)) { uart0_puts("NO WP\n");  }
  uart0_puts("YES\n");
  
  //WP - write protect
  uart0_puts("Write protected? ");
  while(((m_pPio->PIO_PDSR) & BIT16)) { //put your write protect event here }
  //uart0_puts("NO WP\n");
  */
  
  		if ((AT91C_BASE_PIOB->PIO_PDSR) & SW1) uart0_puts("SW1 ");
		if ((AT91C_BASE_PIOB->PIO_PDSR) & SW2) uart0_puts("SW2 ");
		if ((AT91C_BASE_PIOB->PIO_PDSR) & CP) uart0_puts("CP ");
		if ((AT91C_BASE_PIOB->PIO_PDSR) & WP) uart0_puts("WP ");
  
  AT91C_BASE_PIOB->PIO_SODR = NPCS1;
   /**** MMC CARD ****/
  if (initMMC() == MMC_SUCCESS)	// card found
  {
  AT91C_BASE_PIOB->PIO_SODR = NPCS1;  	
    //card_state |= 1;
    memset(&mmc_buffer,0,512);
    mmcReadRegister (10, 16);
    mmc_buffer[7]=0;

   // Fill first Block (0) with 'A'
    memset(&mmc_buffer,'0',512);    //set breakpoint and trace mmc_buffer contents
    mmcWriteBlock(0);
    // Fill second Block (1)-AbsAddr 512 with 'B'
    memset(&mmc_buffer,'1',512);
    mmcWriteBlock(512); 

    // Read first Block back to buffer
    memset(&mmc_buffer,0x00,512);
    mmcReadBlock(0,512);

    // Read first Block back to buffer
    memset(&mmc_buffer,0x00,512);
    mmcReadBlock(512,512);
    
    uart0_puts(mmc_buffer[0]);
    uart0_puts(mmc_buffer[1]);
    uart0_puts(mmc_buffer[2]);
  }
  
  
	// loop forever
	while (1) {
		AT91C_BASE_PIOB->PIO_SODR = AT91B_LCD_BL;
		Delay(wait);
		AT91C_BASE_PIOB->PIO_CODR = AT91B_LCD_BL;
		Delay(wait);	
	
	}
}