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let's play a game: spot a funny typo in AVR datasheet
Let's play this game: who spots the most funny typo in any AVR datasheet (or appnote or other AVR-related doc)? Now I don't mean real factual errors, but typos which inevitably...
Monday, 16 November 2009 - 13:22
pgm_read_xxx() parameter typecast is harmful
In pgmspace.h, the pgm_read_xxx()-s' parameter (the address) is explicitly cast to (uint16_t) through a macro, such as in: #define pgm_read_byte_near(address_short) __LPM((...
Friday, 23 October 2009 - 12:44
EEPROM endurance and pages
As a followup to this thread, I concocted a dirty test which aims at revealing the paged nature of EEPROM in AVRs. It writes an alternating pattern of 55/AA into a certain EEPROM...
Monday, 12 October 2009 - 08:15
Quiz of the week: How to disable ADC interrupt temporarily?
Let's have an AVR with ADC, say ATMega128. Let's have written an ADC ISR which re-triggers the ADC, and let's initialise the ADC for single-conversion and enable the interrupt....
Tuesday, 6 October 2009 - 13:25
Any experience with the -A suffixed parts (ATMega128A)?
Our parts supplier noticed us that they might start to have problems supplying the "old" 'M128-s, and recommended the "new" 'M128A. We've of course gone through the migration...
Thursday, 1 October 2009 - 08:45
".....without a single program line !"
http://www.avrtools.no/ Discuss. JW
Wednesday, 30 September 2009 - 10:52
Quiz of the week: spot the error in AVR datasheet
I've noticed an error in the "Instruction Set Summary" table at the end of AVR datasheets. Not a dramatic one, but the error is present in most AVR datasheets, apparently as the...
Tuesday, 8 September 2009 - 10:56
this month's quiz
I feel completely stupid now (maybe that's not just the feeling? ;-) ) [spoiler follows - maybe?] In this month's quiz, question 2: How many data pointers does mega128 have? Well...
Saturday, 6 June 2009 - 11:42
Utility to check sections overflow
This thread and my own needs to check that certain sections content won't overflow the section boundaries, made me to write this utility. Run it with no parameters to get some...
Wednesday, 20 May 2009 - 11:53
How do you allocate pgm sections above text?
Just another one of these stupid questions of mine. On a >64kB ATMega I need to use a lot of data, for which I don't want to waste the precious
Sunday, 26 April 2009 - 15:31
Any smart way how to get rid of "uninitialised" wa
In a complex function, I get the "variable may be used uninitialised" warning. gcc manual in "3.8 Options to Request or Suppress Warnings", for this type of warning, says, "These...
Wednesday, 22 April 2009 - 17:23
How to check if value is unique?
I know this is not an avr-gcc specific question - I will now try to abuse the presence of C-knowledgeable experts here. In a bigger project, I need to assign various *numbers* to...
Monday, 20 April 2009 - 08:17

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