mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-11-19 18:40:17 +00:00
35 lines
975 B
C
35 lines
975 B
C
|
#include "contiki.h"
|
||
|
|
#include "dev/battery-sensor.h"
|
||
|
|
#include "lib/sensors.h"
|
||
|
|
#include <stdio.h> /* For printf() */
|
||
|
|
/*---------------------------------------------------------------------------*/
|
||
|
|
PROCESS(battery_monitor_process, "Battery Voltage Monitor");
|
||
|
|
AUTOSTART_PROCESSES(&battery_monitor_process);
|
||
|
|
/*---------------------------------------------------------------------------*/
|
||
|
|
PROCESS_THREAD(battery_monitor_process, ev, data)
|
||
|
|
{
|
||
|
|
static struct etimer et;
|
||
|
|
|
||
|
|
PROCESS_BEGIN();
|
||
|
|
|
||
|
|
SENSORS_ACTIVATE(battery_sensor);
|
||
|
|
|
||
|
|
while(1) {
|
||
|
|
|
||
|
|
etimer_set(&et, CLOCK_SECOND * 2);
|
||
|
|
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
|
||
|
|
/*
|
||
|
|
* Battery voltage calculation formula
|
||
|
|
*
|
||
|
|
* V(Battery Voltage) = v(Voltage Reference) * 1024 / ADC
|
||
|
|
*
|
||
|
|
* Where:
|
||
|
|
* v = 1.223
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
printf("ADC value : %d\n", battery_sensor.value(0));
|
||
|
|
}
|
||
|
|
PROCESS_END();
|
||
|
|
}
|
||
|
|
/*---------------------------------------------------------------------------*/
|