I have an embedded board with PowerPC 5200 running Realtime Linux with version 2.6.33 (OSADL).
My application is using one high resolution timer in Linux for alarms. This timer sometimes didn’t expire.
I'm learning Android and want to write some kind of count-down timer application, so I get a ring-tone after certain minutes are elapsed. The timer also should work if the user has closed the application or switched to another one.
I've looked for 555 circuits - all the ones I find need an instantaneous trigger, either positive or negative, but my trigger will be persistent, so I'm struggling. I don't want the timer to stay latched if the trigger stays at 0V.
For most of the time, the pump will be powered and the timer will see 12V.
A fixed-rate timer is not part of the ARM specification, but most ARM-based SoCs have such a timer. The Raspberry Pi is no exception. However, reading its timer in Linux takes a Unix hackers understanding.
It is good to be here.
I am a newbie to Linux.Can anyone help me in designing a timer application.
The timer has to start.And after certain time interval the program should call a function continuously.It should not be in sleep mode.During the course of that time interval the program should execute the rest of the functions or statements.
I have implemented a countdown timer in an application of mine. It runs in the background fine and dandy, but when i use advanced task killer, it stops the timer and the only way to restart it is to open the application again.