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use synchronous transmission.

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This commit is contained in:
nvt-se 2007-12-17 15:26:47 +00:00
parent 2a0351afb4
commit 5f1ca4ccdf
3 changed files with 51 additions and 78 deletions
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25
platform/msb430/dev/dma.c
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@ -44,31 +44,30 @@
#include "dev/cc1020.h"
#include "dev/dma.h"
static struct process *subscribers[DMA_LINES];
process_event_t dma_event;
static void (*callbacks[DMA_LINES])(void);
interrupt(DACDMA_VECTOR) irq_dacdma(void)
{
if (DMA0CTL & DMAIFG) {
DMA0CTL &= ~(DMAIFG | DMAIE);
if (subscribers[0] != NULL) {
process_post(subscribers[0], dma_event, NULL);
if (callbacks[0] != NULL) {
callbacks[0]();
}
LPM_AWAKE();
}
if (DMA1CTL & DMAIFG) {
DMA1CTL &= ~(DMAIFG | DMAIE);
if (subscribers[1] != NULL) {
process_post(subscribers[1], dma_event, NULL);
if (callbacks[1] != NULL) {
callbacks[1]();
}
LPM_AWAKE();
}
if (DMA2CTL & DMAIFG) {
DMA2CTL &= ~(DMAIFG | DMAIE);
if (subscribers[2] != NULL) {
process_post(subscribers[2], dma_event, NULL);
if (callbacks[2] != NULL) {
callbacks[2]();
}
LPM_AWAKE();
}
@ -82,19 +81,13 @@ interrupt(DACDMA_VECTOR) irq_dacdma(void)
}
}
void
dma_init(void)
{
dma_event = process_alloc_event();
}
int
dma_subscribe(int line, struct process *p)
dma_subscribe(int line, void (*callback)(void))
{
if (line >= DMA_LINES)
return -1;
subscribers[line] = p;
callbacks[line] = callback;
return 0;
}