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#include "platform/etTimer.h"
#include "hal_MSP-EXP430F5438.h"
/* global timer */
static etTargetTime_t targetTime;
static etTargetTime_t lastTargetTime;
static volatile etBool etTimer_executeFlag = FALSE;
void etTimer_init(void){
targetTime.nSec=0;
targetTime.sec=0;
lastTargetTime.nSec=0;
lastTargetTime.sec=0;
}
etBool etTimer_executeNeeded(void){
if (etTimer_executeFlag == TRUE){
etTimer_executeFlag = FALSE;
return TRUE;
}
else {
return FALSE;
}
}
int isTimeGreaterThanActualTime(const etTargetTime_t *t) {
_disable_interrupt();
if (t->sec > targetTime.sec) {
_enable_interrupt();
return 1;
}
if (t->sec < targetTime.sec) {
_enable_interrupt();
return 0;
}
if (t->nSec > targetTime.nSec) {
_enable_interrupt();
return 1;
}
else {
_enable_interrupt();
return 0;
}
}
uint32 getNSecFromTarget(void){
etTargetTime_t time;
getTimeFromTarget(&time);
return time.nSec;
}
uint32 getSecFromTarget(void){
etTargetTime_t time;
getTimeFromTarget(&time);
return time.sec;
}
void getTimeFromTarget(etTargetTime_t *t) {
_disable_interrupt();
*t = targetTime;
_enable_interrupt();
}
#define ET_TIMER_TIME_BASE_NS 15625000L
#define ET_TIMER_TIME_BASE_US ET_TIMER_TIME_BASE_NS / 1000L
#define ET_TIMER_TIME_BASE_MS ET_TIMER_TIME_BASE_US / 1000L
uint32 getTimeBaseNS(void){
return ET_TIMER_TIME_BASE_NS;
}
uint32 getTimeBaseUS(void){
return ET_TIMER_TIME_BASE_US;
}
uint32 getTimeBaseMS(void){
return ET_TIMER_TIME_BASE_MS;
}
/* the timer interrupt */
#pragma INTERRUPT(wdt_isr)
#pragma vector=WDT_VECTOR
void wdt_isr(void) {
// this interrupt will be called every 15,625ms
static unsigned char secCounter = 0;
etTimer_executeFlag = TRUE;
targetTime.nSec += 15625000L;
if (targetTime.nSec >= 1000000000L) {
targetTime.nSec -= 1000000000L;
targetTime.sec++;
}
secCounter++;
if (secCounter >= 64) {
secCounter = 0;
}
} // end interrupt
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