isr_config.c

基于BF533的视频采集及显示

/******************************************************************************/
//
// Name: 	BF533 Interrupt Setup
//
/******************************************************************************

File Name:	ISR_Config.c

Special Connections:  None

Purpose:		The file sets up all interrupts required 
				
*********************************************************************************/


#include <cdefBF533.h>
#include <sys\exception.h>		//Interrupt Handling Header
#include "ISR_Config.h"
     
EX_INTERRUPT_HANDLER(DMA0_PPI_ISR)	// <--|declaration in  exception.h -->
{									//    |declaration with _pragma(interrupt) the ISR Startaddress 
	
	//disable the interrupt request
	*pDMA0_IRQ_STATUS = 0x1;

 }

void Init_Interrupts(void)
{

	// configure interrupt
	*pSIC_IAR0 = *pSIC_IAR0 & 0xffffffff | 0x00000000;	
	*pSIC_IAR1 = *pSIC_IAR1 & 0xffffffff | 0x00000001;	// map DMA0 PPI Interrupt -> IVG8
	*pSIC_IAR2 = *pSIC_IAR2 & 0xffffffff | 0x00000000;	
															
	register_handler(ik_ivg8, DMA0_PPI_ISR);			// assign DMA0 PPI ISR to interrupt vector 8
	
	*pSIC_IMASK=0x00000100; // all interrupts 0=disabled but DMA0 PPI interrupt enabled	
		
}