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Counter Design in Contiki NG Operating System

Counter Design in Contiki NG OS

$] make TARGET=native

Step 1 - Files needed 

myowncounter.h, myowncounter.c and ngcounter.c Makefile.
Inside the folder contiki-ng/examples/myowncounter

Step 2: 
//myowncounter.h

#ifndef MYOWNCOUNTER_H
#define MYOWNCOUNTER_H

int next_round(int temp);

#endif

Step 3: 
//myowncounter.c

#include "myowncounter.h"

int next_round(int temp)
{
if(temp>59)
temp=1;
else 
temp++;
return temp;
}


Step 4: 

//ngcounter.c
#include "contiki.h"
#include "sys/etimer.h"
#include "mycounter.h"

#include <stdio.h>

PROCESS(mycounter_process, "My Counter Process");
AUTOSTART_PROCESSES(&mycounter_process);

static struct etimer et;
static int count=0;

PROCESS_THREAD(mycounter_process,ev,data)
{

PROCESS_BEGIN();
while(1)
{
etimer_set(&et, CLOCK_SECOND*2);
PROCESS_WAIT_EVENT_UNTIL(etimer_Expired(&et));

count=next_round(count);
printf("Count Value : %d\n",count);
}
PROCESS_END();
}

Step 5: Makefile
#Makefile Content
CONTIKI_PROJECT = ngcounter
all: $(CONTIKI_PROJECT)

PROJECT_SOURCEFILES += myowncounter.c

CONTIKI = ../..
include $(CONTIKI)/Makefile.include


How to Execute

To run this, Open the Terminal and Go to 

$] cd contiki-ng/examples/myowncounter
$] make TARGET=native

It will create a file called ngcounter.native file 

$] ./ngcounter.native


You will get the  Output Looks this this:
Contiki NG
Contiki NG

The above code is working on a Mote As Well in Z1 Zolertia Motes as shown below.
Zolertia Z1
Zolertia Z1





Complete Instructions are there in the Video.


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