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# MPLAB Stopwatch?

Discussion in 'Programmer's Corner' started by Ben_C, May 9, 2012.

1. ### Ben_C Thread Starter Active Member

Oct 19, 2010
65
4
Anybody got any ideas how to get the total execution time of all iterations of the loop using MPLAB SIM and Stopwatch?
Excluding the final NOP and the instructions that initialize the values of X & Y

Info: 10MHz using PIC18F4520.

716.4μs

Just wondering how you would get this value.. I've tried a lot of ways in MPLAB but I'm getting different times from the Stopwatch

Code ( (Unknown Language)):
1.
2. [B][SIZE=3]      radix decimal [/SIZE][/B]
3. [B][SIZE=3]x     equ 10 [/SIZE][/B]
4. [B][SIZE=3]y     equ 11 [/SIZE][/B]
5. [B][SIZE=3]      CLRF x [/SIZE][/B]
6. [B][SIZE=3]      CLRF y [/SIZE][/B]
7. [B][SIZE=3]loop [/SIZE][/B]
8. [B][SIZE=3]      INCF x [/SIZE][/B]
9. [B][SIZE=3]      INCF x [/SIZE][/B]
10. [B][SIZE=3]      MOVF x,w [/SIZE][/B]
11. [B][SIZE=3]      ADDWF x [/SIZE][/B]
12. [B][SIZE=3]      INCF y [/SIZE][/B]
13. [B][SIZE=3]      BNC loop [/SIZE][/B]
14. [B][SIZE=3]      NOP [/SIZE][/B]
15.       [B]end[/B]
16.

Last edited: May 9, 2012
2. ### Ben_C Thread Starter Active Member

Oct 19, 2010
65
4
I got it, set a breakpoint at NOP then step through the x & y to find the time then minus this to give the total loop time.. but surely theres an easier way than stepping through x & y ??

3. ### Markd77 Senior Member

Sep 7, 2009
2,796
595
If you press the run button, it should stop at the breakpoint. Assuming MPLAB 8, there is a button on the stopwatch to zero it.