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/* *************************************
* Includes
* *************************************/
#include "Timer.h"
#include "GameStructures.h"
/* *************************************
* Defines
* *************************************/
#define MAX_TIMERS 16
/* *************************************
* Local Variables
* *************************************/
//Timer array.
static TYPE_TIMER timer_array[MAX_TIMERS];
/* *************************************
* Local Prototypes
* *************************************/
/* ********************************************************************************************
*
* @name TYPE_TIMER* TimerCreate(uint32_t t, bool rf, void (*timer_callback)(void) )
*
* @author: Xavier Del Campo
*
* @brief: fills a TYPE_TIMER structure with input parameters
*
* @param: uint32_t t:
* Timeout value (1 unit = 10 ms)
* bool rf:
* Repeat flag
* void (*timer_callback)(void)
* Function to be called on timeout
*
* @return: pointer to TYPE_TIMER structure if filled correctly, NULL pointer otherwise.
*
* ********************************************************************************************/
TYPE_TIMER* TimerCreate(uint32_t t, bool rf, void (*timer_callback)(void) )
{
bool success = false;
uint8_t i;
if (t == 0)
{
Serial_printf("Cannot create timer with time == 0!\n");
return NULL;
}
for (i = 0; i < MAX_TIMERS; i++)
{
if (timer_array[i].busy == false)
{
timer_array[i].Timeout_Callback = timer_callback;
timer_array[i].time = t;
timer_array[i].orig_time = t;
timer_array[i].repeat_flag = rf;
timer_array[i].busy = true;
success = true;
break;
}
}
if (success == false)
{
Serial_printf("Could not find any free timer!\n");
return NULL;
}
return &timer_array[i];
}
/* *******************************************
*
* @name void TimerReset(void)
*
* @author: Xavier Del Campo
*
* @brief: reportedly, removes all timers.
*
* *******************************************/
void TimerReset(void)
{
uint8_t i;
for (i = 0; i < MAX_TIMERS; i++)
{
TimerRemove(&timer_array[i]);
}
}
/* *****************************************************
*
* @name void TimerHandler(void)
*
* @author: Xavier Del Campo
*
* @brief: reportedly, handles all available timers.
*
* @remarks: calls callback on timeout.
*
* *****************************************************/
void TimerHandler(void)
{
uint8_t i;
for (i = 0; i < MAX_TIMERS; i++)
{
if (timer_array[i].busy)
{
if (System100msTick())
{
timer_array[i].time--;
if (timer_array[i].time == 0)
{
timer_array[i].Timeout_Callback();
if (timer_array[i].repeat_flag)
{
timer_array[i].time = timer_array[i].orig_time;
}
}
}
}
}
}
/* *********************************************************************
*
* @name void TimerRestart(TYPE_TIMER* timer)
*
* @author: Xavier Del Campo
*
* @brief: sets time left for TYPE_TIMER instance to initial value.
*
* @remarks: specially used when TYPE_TIMER.rf is enabled.
*
* *********************************************************************/
void TimerRestart(TYPE_TIMER* timer)
{
timer->time = timer->orig_time;
}
/* *********************************************************************
*
* @name void TimerRemove(TYPE_TIMER* timer)
*
* @author: Xavier Del Campo
*
* @brief: Resets timer parameters to default values so timer instance
* can be recycled.
*
* @remarks:
*
* *********************************************************************/
void TimerRemove(TYPE_TIMER* timer)
{
timer->time = 0;
timer->orig_time = 0;
timer->Timeout_Callback = NULL;
timer->busy = false;
timer->repeat_flag = false;
}
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