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Forum Index : Microcontroller and PC projects : Memory Leak ?

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srnet
Senior Member

Joined: 08/08/2014
Location: United Kingdom
Posts: 164

Posted: 10:09pm 24 Mar 2015

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I was trying out my GPS Distance and Calculation routines for the LoRa tracker receiver. The program would run for a few minutes and go a bit haywire, it was in fact running out of memory.

The problem turns out to be an error on my part;

FUNCTION CONVERTLAT(LLAT$) as FLOAT
DIM LOCAL FLOAT LGPSDeg, LGPSMins, Ltemp

DIM LOCAL is not highlighted as an error, but causes 3 new variables to be assigned every time it runs.

EXPLICIT mode does pick it up, in that the variables in the incorrect DIM are not created as LOCAL so an error is reported.

Could catch you out, eventually, in an infrequently used routine.

Using MMII 4.6b

Edited by srnet 2015-03-26

$50SAT is Silent but probably still working.
For information on LoRa visit http://www.loratracker.uk/

PicFan
Senior Member

Joined: 18/03/2014
Location: Austria
Posts: 133

Posted: 05:40am 26 Mar 2015

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I think, the correct Syntax is:

LOCAL DIM AS FLOAT var1, var2, varX

twofingers

Guru

Joined: 02/06/2014
Location: Germany
Posts: 1576

Posted: 06:23am 26 Mar 2015

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Hi

please try

LOCAL FLOAT var1, var2, varX

without DIM!

edit: LOCAL replaces DIM in a SUB. LOCAL means "DIM" locally.
Local variables "live" (exist in the memory) until the program exits the SUB.
Generally you should use DIM only in the main program.
DIM variables are globally available.

Regards
MichaelEdited by twofingers 2015-03-27

causality ≠ correlation ≠ coincidence

srnet
Senior Member

Joined: 08/08/2014
Location: United Kingdom
Posts: 164

Posted: 06:56am 26 Mar 2015

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I fixed it as soon as I spotted in in the code.

Point was that the interpreter does not pick it up, but instead your program may crash days or weeks after it started.

$50SAT is Silent but probably still working.
For information on LoRa visit http://www.loratracker.uk/

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