Hello together,
I try to implement a simple timer on the board samr21-xpro. The board
support multiple timers [1].
Here is my code, but the timer is not running although I get a success
back on timer_init(...).
C-File:
=============================================================
#include <stdio.h>
#include "xtimer.h"
#include "timex.h"
#include "board.h"
#include "periph/timer.h"
void ISR_timer(void* arg, int argc){
//Never called :(
(void)arg;
(void)argc;
printf("ISR works...\n");
printf("This should be print every 1Hz\n");
}
int main(void){
int returnval = 0;
xtimer_sleep(1);
printf("Timer available: %d\n",TIMER_NUMOF);//Print how many
timers are available on samr21-xpro
printf("Timer start ...\n");
returnval = timer_init(1,1,&ISR_timer,NULL);//timer 1 with 1Hz
and ISR_timer as callback
printf("returnval = %d\n",returnval);
while(1);//do nothing
}
=============================================================
Makefile:
=============================================================
APPLICATION = timer
RIOTBASE ?= $(CURDIR)/../../RIOT
BOARD ?= samr21-xpro
QUIET ?= 1
# Comment this out to disable code in RIOT that does safety checking
# which is not needed in a production environment but helps in the
# development process:
DEVELHELP ?= 1
FEATURES_REQUIRED += periph_timer
USEMODULE += xtimer
include $(RIOTBASE)/Makefile.include
=============================================================
[1] https://riot-os.org/api/group__boards__samr21-xpro.html
Thanks for the help.
--
Best Regards
Oliver Koepp
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