nes-proj/cpu/cc2430/dev/dma_intr.c

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/**
* \file
* DMA driver ISRs
* \author
* Original: Martti Huttunen <martti@sensinode.com>
* Port: Zach Shelby <zach@sensinode.com>
*
* DMA interrupt routines, must be stored in HOME bank
*/
#include <stdio.h>
#include "contiki.h"
#include "dev/dma.h"
#include "cc2430_sfr.h"
#include "banked.h"
extern struct process * dma_callback[4];
/*---------------------------------------------------------------------------*/
#ifdef HAVE_RF_DMA
extern void rf_dma_callback_isr(void);
#endif
#ifdef SPI_DMA_RX
extern void spi_rx_dma_callback(void);
#endif
/*---------------------------------------------------------------------------*/
/**
* DMA interrupt service routine.
*
* if callback defined a poll is made to that process
*/
void
dma_ISR(void) __interrupt (DMA_VECTOR)
{
#ifdef HAVE_DMA
uint8_t i;
#endif
EA=0;
#ifdef HAVE_RF_DMA
if((DMAIRQ & 1) != 0) {
DMAIRQ &= ~1;
DMAARM=0x81;
rf_dma_callback_isr();
}
#endif
#ifdef SPI_DMA_RX
if((DMAIRQ & 0x08) != 0) {
DMAIRQ &= ~(1 << 3);
spi_rx_dma_callback();
}
#endif
#ifdef HAVE_DMA
for(i = 0; i < 4; i++) {
if((DMAIRQ & (1 << i + 1)) != 0) {
DMAIRQ &= ~(1 << i+1);
if(dma_callback[i] != 0) {
process_poll(dma_callback[i]);
}
}
}
#endif
IRCON_DMAIF = 0;
EA = 1;
}
/*---------------------------------------------------------------------------*/