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Implement etimer callback

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This commit is contained in:
Ralf Schlatterbeck 2016-05-05 16:18:21 +02:00
parent c043a00bb4
commit 0232e6c9dc
8 changed files with 47 additions and 11 deletions
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41
cpu/pico-rv32/dev/clock.c
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@ -55,29 +55,40 @@
* It is defined through CONF_CLOCK_SECOND in the contiki-conf.h for
* each platform.
* The usual AVR defaults are 128 or 125 ticks per second, counting a
* prescaled CPU clock using the 8 bit timer0.
* prescaled CPU clock using the 8 bit timer0. We use the same in the
* timer interrupt: 1/128 second ticks, this can be changed by modifying
* CLOCK_TIMER_PERIOD below.
*
* clock_time_t is usually declared by the platform as an unsigned 16
* bit data type, thus intervals up to 512 or 524 seconds can be
* measured with ~8 millisecond precision.
* For longer intervals the 32 bit clock_seconds() is available.
* We directly use the 64-bit cycle counter provided by the CPU.
*/
#include "sys/clock.h"
#include "sys/etimer.h"
#include "icosoc.h"
#include <stdio.h> // FIXME
// 1/128 second ticks
#define CLOCK_TIMER_PERIOD (F_CPU >> 7)
static volatile clock_time_t count;
unsigned long offset;
long sleepseconds;
void irq_handler(uint32_t irq_mask, uint32_t *regs);
/*---------------------------------------------------------------------------*/
/**
* No need to init
* Initialize interrupt handler
*/
void
clock_init(void)
{
icosoc_irq(irq_handler);
icosoc_maskirq(0);
icosoc_timer(CLOCK_TIMER_PERIOD);
}
/*---------------------------------------------------------------------------*/
/**
@ -147,5 +158,29 @@ clock_adjust_ticks(clock_time_t howmany)
{
}
/** \brief irq handler
* for running interrupts every 1/128 second.
*/
void
irq_handler(uint32_t irq_mask, uint32_t *regs)
{
// timer interrupt
if (irq_mask & 1) {
// FIXME: Want to call rtimer_run_next();
icosoc_timer(CLOCK_TIMER_PERIOD);
if(etimer_pending()) {
etimer_request_poll();
}
}
// SBREAK, ILLINS or BUSERROR
if (irq_mask & 4) {
printf("Bus Error!\n");
}
// Can we distinguish ILLINS and SBREAK?
if (irq_mask & 2) {
icosoc_sbreak();
}
}
/** @} */
/** @} */