initflash.c

基于ADI blackfin处理器的范例程序

#include "system.h"

/********************************************************************************/
/***** InitFlash()															*****/
/***** Needed to Selected the ExtenderPPI clock on te BF53x-EZkit 			*****/
/********************************************************************************/
void InitFlash(void)
{ short temp;
	
	// Initalize EBIU control registers
	*pEBIU_AMBCTL0 = 0x78B078B0;
	*pEBIU_AMBCTL1 = 0x78B078B0;
	asm("ssync;");

	//	*pPPI_COUNT   = Number_of_DAC_channels * Number_of_Samples -1; //don't know if relevant
	*pEBIU_AMGCTL |= 0x000F;
	asm("ssync;");
	
/*	temp = *((short*)(FLASHA_CSIO+PORTA_DATA_DIR));
	printf("%d\n", temp);
	temp = *((short*)(FLASHA_CSIO+PORTA_DATA_OUT));
	printf("%d\n", temp);
*/
	*((short*)(FLASHA_CSIO+PORTA_DATA_DIR)) |= 1<< PPI_EXTENDER_CLK_BIT;	// set direction to output
	*((short*)(FLASHA_CSIO+PORTA_DATA_OUT)) |= 1<< PPI_EXTENDER_CLK_BIT;	// set Flag PA5 high to select external PPI clock
/*
	temp = *((short*)(FLASHA_CSIO+PORTA_DATA_DIR));
	printf("%d\n", temp);
	temp = *((short*)(FLASHA_CSIO+PORTA_DATA_OUT));
	printf("%d\n", temp);
*/	
}