Embedded Linux Timer API

Library is a High-Level POSIX TIMER API.

API Functions

Define Timer Signal

#defineTIMER_SIGNAL_1 SIGRTMIN + 1

Allocate Memory

timerValues_t*timer1= (timerValues_t*)malloc(sizeof(timerValues_t));

Timer Initalize

timerInit(timer1,TIMER_SIGNAL_1,timerCallback_1);

Parameter	Type	Description
Name	timer_t	Timer Name
Signal	uint16_t	Timer Signal
Callback	void *	Timer Callback Functions

Timer Start

timerStart(timer1, 0 , 1000 ); ->1secondPeriodicTimertimerStart(timer1, 1000, 1000 ); ->1secondPeriodicTimertimerStart(timer1, 3000, 0 ); ->3secondOneShotTimer

Parameter	Type	Description
Name	timer_t	Timer Name
Time_Ms	uint16_t	One Shot Timer Value (ms)
Time_Ms	uint16_t	Periodic Timer Value (ms)

Timer Stop

timerStop(timer1);

Parameter	Type	Description
Name	timer_t	Timer Name

Timer Deinit

timerDeinit(timer1);

Parameter	Type	Description
Name	timer_t	Timer Name

Timer Callback Function

voidtimerCallback_1(intsignal)
{
//(void)signal;printf("Timer Interrupt %d ------------\n",signal);
}

Download Code

Clone Project

 git clone https://github.com/seff34/Linux-Timer-API

References:

https://man7.org/linux/

https://demirten.gitbooks.io/linux-sistem-programlama/content/timers/posix.html