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Isis 7 - CPU high load

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Linspire

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Does anyone here experiencing high cpu load during simulation ?
I having it for simulating the keypad + sd card + lcd with 20Mhz.
Even I reduce the speed of crystal, it still occurs.


Regards
Linspire
 

hi

the problem may be with your PC
what's the config of the system?
how many programs running (may be on back ground)?
and of course your code ...

regards

ml
 

PC spec:
i.AMD Phenom II X2 1055T - 2.8Ghz
ii.8G RAM
iii.Windows 7 (Ultimate Ver)
iv.GT-450 graphic

I realised when I turn off the google chrome, it run abit better.

Linspire
 

Depending on the simulated circuit complexity you can get 100% load even in modern fast cpu.

Alex
 

Yap, so far I tested several components UART, SD card,LCD.
All are running fine.
However,for keypad connection, it runs slow.
Attachment shown below:
Capture.JPG


Linspire
 

The keypad is a bunch of switches, they don't use any cpu power, the problem is the mcu and LCD

Alex
 

okay..guess I can't solve it then
 

Linspire said:
...
However,for keypad connection, it runs slow.
...
Click to expand...
alexan_e said:
The keypad is a bunch of switches, they don't use any cpu power
Click to expand...

Alexan_e, I'm different experienced, the keypad model in ISIS is active (has a DLL) so - perhaps - may cause slowdown.
I have other problems with it, definitely not a passive element.

Linspire, try to substitute it with real momentary pushbuttons. First - let's say - apply just two properly connected buttons.
If it helps and the slowdown is removed, it was caused by the keypad model.
No other idea ...
 

zuisti said:
Alexan_e, I'm different experienced, the keypad model in ISIS is active (has a DLL) so - perhaps - may cause slowdown.
I have other problems with it, definitely not a passive element.
Click to expand...

I agree with you, I didn't say it is a passive component but the operational model is so simple that it doesn't present any load in the cpu, if you try an empty project with a keypad you will barely see a few peaks of 1%.

Anyway the alternative of passive buttons may help so he can try that solution.

Alex
 

zuisti said:
Alexan_e, I'm different experienced, the keypad model in ISIS is active (has a DLL) so - perhaps - may cause slowdown.
I have other problems with it, definitely not a passive element.

Linspire, try to substitute it with real momentary pushbuttons. First - let's say - apply just two properly connected buttons.
If it helps and the slowdown is removed, it was caused by the keypad model.
No other idea ...
Click to expand...

I cant understand what are you trying to say.
Can draw some circuit so that I can understand more ?

Linspire
 

Tried it. It's still show warning excessive cpu load.
I guess this problem cant be solved.


Linspire
 

I think your computer is loaded with some other programms in the background.

I had tried the same which is running quite nicely in corei3 with 2GB ram.
 

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