Code Overhead

hobmail

How would you know or determine the code overhead?
A book (Robotix with boe-bot) pg. 82-82. On a for..next loop, it says that its takes 1.3ms for the loop to execute,

for counter = 1 to 100
pulout 13, 850
pause 20
next

but on page 83,
it says the code overhead is 1.6 ms,

for counter = 1 to 122
pulsout =13. 850
pulsout 12, 650
pause 20
next

So, which one is which? Is it a constant number regardless of how long the for..next loop subroutine is?

Thanks.

Mike Green

The best information on Stamp execution time is at www.emesystems.com. Click on the "app-notes" link near the bottom of the page.

To determine the code overhead, you would need to measure the time to do a large number of these loops including the inner statements and subtract the amount of time to do the same large number of these loops less the inner statements.