stats_task.cpp

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#include "Thread.h"
#include "mbed.h"
#include "tasks/stats_task.h"
#include "ui.h"
#include <cstdio>
 
using namespace Tasks;
 
#define SAMPLE_TIME_MS 1000
#define MAX_THREAD_STACK 384
 
UI::Display *_display;
EventQueue *stats_queue = mbed_event_queue();
int _thread_id;
Thread *_thread;
 
void Stats::setDisplay(UI::Display *display) {
    _display = display;
}
 
void collect_stats() {
  mbed_stats_cpu_t stats;
  mbed_stats_cpu_get(&stats);
  _display->update_stats(&stats, SAMPLE_TIME_MS);
}
 
void Stats::start() {
  if (_thread) {
    // we're already running
    return;
  }
 
  _thread_id = stats_queue->call_every(SAMPLE_TIME_MS, collect_stats);
 
  _thread = new Thread(osPriorityNormal, MAX_THREAD_STACK);
}
 
void Stats::stop() {
  if (_thread) {
    _thread->terminate();
  }
}