isr_dmac0.c

来自「diPIC 系列程序」· C语言 代码 · 共 64 行

/**********************************************************************
* ?2006 Microchip Technology Inc.
*
* FileName:        isr_DMAC0.c
* Dependencies:    p33FJ256GP710.h
* Processor:       dsPIC33F
* Compiler:        MPLAB?C30 v2.01 or higher
*
* SOFTWARE LICENSE AGREEMENT:
* Microchip Technology Inc. (揗icrochip? licenses this software to you
* solely for use with Microchip dsPIC?digital signal controller
* products. The software is owned by Microchip and is protected under
* applicable copyright laws.  All rights reserved.
*
* SOFTWARE IS PROVIDED 揂S IS.? MICROCHIP EXPRESSLY DISCLAIMS ANY
* WARRANTY OF ANY KIND, WHETHER EXPRESS OR IMPLIED, INCLUDING BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL MICROCHIP
* BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT OR CONSEQUENTIAL
* DAMAGES, LOST PROFITS OR LOST DATA, HARM TO YOUR EQUIPMENT, COST OF
* PROCUREMENT OF SUBSTITUTE GOODS, TECHNOLOGY OR SERVICES, ANY CLAIMS
* BY THIRD PARTIES (INCLUDING BUT NOT LIMITED TO ANY DEFENSE THEREOF),
* ANY CLAIMS FOR INDEMNITY OR CONTRIBUTION, OR OTHER SIMILAR COSTS.
*
* REVISION HISTORY:
*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* Author            Date      Comments on this revision
*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* Richard Fischer   07/14/05  DMA CH0 interrupt handler
* Priyabrata Sinha  01/27/06  Ported to non-prototype devices
*
*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* ADDITIONAL NOTES:
*
*
**********************************************************************/

#include "p33FJ256GP710.h"
#include "common.h"
void __builtin_btg(unsigned int *, unsigned int);
volatile unsigned int temp1;

/*---------------------------------------------------------------------
  Function Name: DMA0Interrupt
  Description:   DMA Channel0 Interrupt Handler
  Inputs:        None
  Returns:       None
-----------------------------------------------------------------------*/
int count = 0;
void __attribute__((__interrupt__)) _DMA0Interrupt( void )
{
	
	count++;
	if (count >= 2000) {
		__builtin_btg((unsigned int *)&LATA, 0);
		count = 0;
	}
	//temp1 = (ad2buffera[0]+ad2buffera[1])/2;
	IFS0bits.DMA0IF = 0;            // reset DMA interrupt flag  
}