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Timer.cpp
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Timer.cpp
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#include "Timer.h"
#include "Arduino.h"
void Timer::speed(uint16_t delay_ms, timer_callback function_name, void * formal_inst)
{
callback_delay[timer_count] = delay_ms;
callbacks[timer_count] = function_name;
time_last_called[timer_count] = millis() & 0xffff;
inst[timer_count] = formal_inst;
timer_count++;
}
void Timer::run()
{
uint8_t i;
uint16_t time_now;
uint16_t time_delta;
time_now = 0xffff & millis();
// If a ms has not changed skip this routine.
if(time_now != time_old)
{
// Check to see if time_now cycled through zero.
if(time_now > time_old)
{
time_delta = time_now - time_old;
}
else
{
time_delta = 0xffff - (time_old - time_now);
}
time_old = time_now;
// Cycle through all the registered callbacks.
for(i = 0; i < timer_count; i++)
{
if(callback_delay[i] < (time_delta + time_last_called[i]))
{
time_last_called[i] = 0;
// Make the call back.
(*(callbacks[i]))(inst[i]);
}
else
{
time_last_called[i] += time_delta;
}
}
}
}