The 6 Stages of Debugging

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awneil
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#1
Posted by awneil: Thu. Aug 9, 2018 - 10:51 AM
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Image may contain: text

Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillator: https://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...

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jgmdesign
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Posted by jgmdesign: Thu. Aug 9, 2018 - 12:11 PM
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Those are common replies to OP's around here...............

 

 

JIm

If you want a career with a known path - become an undertaker. Dead people don't sue! - Kartman

Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?  - Lee "theusch"

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user

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awneil
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Posted by awneil: Thu. Aug 9, 2018 - 12:16 PM (Reply to #2)
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exactly!

 

laugh

Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillator: https://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
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kk6gm
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Posted by kk6gm: Thu. Aug 9, 2018 - 03:18 PM
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In my work I often add

 

7. How could I have been so stupid?!

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jgmdesign
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Posted by jgmdesign: Thu. Aug 9, 2018 - 03:42 PM
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kk6gm wrote:

In my work I often add

 

7. How could I have been so stupid?!

 

+1

 

Jim

If you want a career with a known path - become an undertaker. Dead people don't sue! - Kartman

Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?  - Lee "theusch"

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user

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avrcandies
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Posted by avrcandies: Thu. Aug 9, 2018 - 04:38 PM
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after a few months....

 

#8 Is that happening AGAIN???

When in the dark remember-the future looks brighter than ever.

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frog_jr
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Posted by frog_jr: Thu. Aug 9, 2018 - 06:43 PM
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avrcandies wrote:
#8 Is that happening AGAIN???
Immediately followed by, "DRAT! What was it I did to fix this the last time?"wink

David (aka frog_jr)

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kk6gm
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Posted by kk6gm: Thu. Aug 9, 2018 - 06:46 PM
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frog_jr wrote:

avrcandies wrote:
#8 Is that happening AGAIN???
Immediately followed by, "DRAT! What was it I did to fix this the last time?"wink

I was thinking more along the lines of "I fixed this!  What the heck did you guys change?!"

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ka7ehk
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Posted by ka7ehk: Thu. Aug 9, 2018 - 06:52 PM
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In my case that would be: I am sure I fixed it - is my memory really that bad?

Jim trying new iPad Touch

Jim Wagner Oregon Research Electronics, Consulting Div. Tangent, OR, USA http://www.orelectronics.net

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westfw
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Posted by westfw: Thu. Aug 9, 2018 - 07:30 PM
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9.  "Oh crap, look at all this other questionable code near there..."

 

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jgmdesign
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Posted by jgmdesign: Thu. Aug 9, 2018 - 07:51 PM
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10. Why the hell did I use a PIC!?

 

JIm

If you want a career with a known path - become an undertaker. Dead people don't sue! - Kartman

Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?  - Lee "theusch"

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user

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js
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Posted by js: Thu. Aug 9, 2018 - 10:36 PM
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Isn't "blaming the innocents" a step too?

John Samperi

Ampertronics Pty. Ltd.

www.ampertronics.com.au

* Electronic Design * Custom Products * Contract Assembly

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Kartman
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Posted by Kartman: Fri. Aug 10, 2018 - 12:41 AM
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You also have to blame the guy who worked on it last and has left the company.

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valusoft
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Posted by valusoft: Fri. Aug 10, 2018 - 12:46 AM
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It wasn't me. Before my time...

 

Ross McKenzie ValuSoft Melbourne Australia

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joeymorin
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Posted by joeymorin: Fri. Aug 10, 2018 - 05:05 AM
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3.1 - I must have found a compiler bug!

3.2 - Nope, obviously this is a silicon errata!

5.1 - F**K me blind, I should have waited to posted that compiler bug report!

"Experience is what enables you to recognise a mistake the second time you make it."

"Good judgement comes from experience.  Experience comes from bad judgement."

"Wisdom is always wont to arrive late, and to be a little approximate on first possession."

"When you hear hoofbeats, think horses, not unicorns."

"Fast.  Cheap.  Good.  Pick two."

"Read a lot.  Write a lot."

"We see a lot of arses on handlebars around here." - [J Ekdahl]

 

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awneil
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Posted by awneil: Fri. Aug 10, 2018 - 06:53 AM (Reply to #15)
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http://www.catb.org/esr/faqs/sma...

 

frown

Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillator: https://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
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MarkThomas
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Posted by MarkThomas: Fri. Aug 10, 2018 - 04:16 PM
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If you are debugging software, the first stage is to blame it on the hardware guys.  If that doesn't work call it a compiler bug.  If it is hardware you are debugging, the first stage is to blame it on the software guys.

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js
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Posted by js: Fri. Aug 10, 2018 - 09:37 PM
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I have given myself several black eyes as I do both.....

John Samperi

Ampertronics Pty. Ltd.

www.ampertronics.com.au

* Electronic Design * Custom Products * Contract Assembly

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MarkThomas
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Posted by MarkThomas: Sat. Aug 11, 2018 - 05:07 PM
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Yeah, I do too these days.

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KerimF
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Posted by KerimF: Sat. Aug 11, 2018 - 05:25 PM
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Anytime I write a code for a new project (besides designing its board) I prepare myself in advance that I will need to fix many silly bugs (hardware and/or firmware) during the tests. The number of bugs likely varies from 50 (if I am lucky laugh ) up to 500 (if I am not crying ).

 

My problem is that I can't sleep well till I finish properly every project I start.

 

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awneil
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Posted by awneil: Sat. Aug 11, 2018 - 05:33 PM (Reply to #20)
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A very good point: it is important to consider, as part of the design, how you will debug your project - something so often missing in problems posted here!

 

frown

Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillator: https://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
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digitalDan
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Posted by digitalDan: Sat. Aug 11, 2018 - 06:35 PM
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Last step of new board circuit design:  Where's the best points to place test point loops (especially on boards that have analog parts).

Letting the smoke out since 1978

 

 

 

 

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