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Forum Index : Microcontroller and PC projects : Interesting CMM Problem

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Chopperp

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Joined: 03/01/2018
Location: Australia
Posts: 1106
Posted: 12:02pm 04 Mar 2020
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FYI

I had a small software initialisation problem when my CMM program first starts up.

In one of my Library files which gets loaded, runs then gets unloaded, I have a line calling 3 subroutines :-  
Gts1: Gts2: Gts3  

The subroutines themselves just do some initial temperature measurements but some of the readings weren't correct. (They are called separately at different times in the main program & work fine).

I finally got around to looking at it today & found that the first subroutine wasn't doing anything. The others were.

Running it by itself worked as did placing it elsewhere in the program.

I changed the order of the routines to Gts2: Gts1: Gts3 & low & behold, Gts2 did nothing while Gts1 & Gts3 worked. Bit strange.

As a test, I put each on a separate line in the main program & that worked.

I then did the same in the Library file & that solved the problem.

Brian
ChopperP
 
CaptainBoing

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Joined: 07/09/2016
Location: United Kingdom
Posts: 2171
Posted: 03:12pm 04 Mar 2020
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In multi-statement lines,if the sub program names are in the first column with a colon directly following, they can get mistaken for line labels... e.g.

GTS1:GTS2:GTS3

isn't the same as

 GTS1:GTS2:GTS3

Check for that. I only ever put labels in column one. you could mitigate it by putting spaces either side of the colons which prevents them being interpreted as labels.

For this reason I tend to be pretty regimented in my formatting... I'd make a great Python programmer  
Edited 2020-03-05 05:15 by CaptainBoing
 
Chopperp

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Joined: 03/01/2018
Location: Australia
Posts: 1106
Posted: 09:25pm 04 Mar 2020
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Ah, I thought that there would be a logical answer. Forgot about labels.

Thanks.

Brian
ChopperP
 
Chopperp

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Joined: 03/01/2018
Location: Australia
Posts: 1106
Posted: 07:16am 05 Mar 2020
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Just confirmed that:-

Gts1 :Gts2 :Gts3

works OK

Thanks

Brian
ChopperP
 
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