1e39e7e486
since mc1322x lacks a VIC this is a kind of SW VIC with low latency and compatibility to the VIC API in mind.
51 lines
1.0 KiB
C
51 lines
1.0 KiB
C
/*
|
|
* isr.c - mc1322x specific isr
|
|
* Copyright (C) 2013 Thomas Eichinger <thomas.eichinger@fu-berlin.de>
|
|
*
|
|
* This source code is licensed under the GNU Lesser General Public License,
|
|
* Version 2. See the file LICENSE for more details.
|
|
*
|
|
* This file is part of RIOT.
|
|
*/
|
|
|
|
#include "mc1322x.h"
|
|
|
|
#define MAX_IRQ_INDEX 10
|
|
#define MAX_IRQ_NUM 11
|
|
|
|
static void (*isr_funcs[11])(void) = {
|
|
asm_isr,
|
|
uart1_isr,
|
|
uart2_isr,
|
|
crm_isr,
|
|
i2c_isr,
|
|
tmr_isr,
|
|
spif_isr,
|
|
maca_isr,
|
|
ssi_isr,
|
|
adc_isr,
|
|
spi_isr
|
|
};
|
|
|
|
void register_isr(uint8_t interrupt, void (*isr)(void)) {
|
|
if (interrupt <= MAX_IRQ_INDEX) {
|
|
isr_funcs[interrupt] = isr;
|
|
}
|
|
}
|
|
|
|
void isr(void)
|
|
{
|
|
/* set irq_num to an invalid value */
|
|
uint8_t irq_num = MAX_IRQ_NUM;
|
|
|
|
/* pending interrupt? */
|
|
while (ITC->NIPEND) {
|
|
/* get interrupt source, range 0-10 */
|
|
irq_num = ITC->NIVECTOR;
|
|
/* call corresponding ISR */
|
|
if (isr_funcs[irq_num] != 0) {
|
|
(isr_funcs[irq_num])();
|
|
}
|
|
}
|
|
}
|