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empty space between .data section symbols
Hi all, I'm watching the elf image .data section and have sorted all the symbols offsets with the following command: /usr/local/avr/bin/avr-objdump -t image.elf --demangle |grep...
Thursday, 14 February 2013 - 17:05
avrdude chiperase issue
My chip is avrxmega256A3. Let me first explain what I'm trying to achieve so that you can possibly preempt any further discussion if the approach is bad. I'm developing for a...
Friday, 1 February 2013 - 09:26
EEPROM access on xmega [xmega256A3U]
Hi all, I'm trying to properly understand the way eeprom memory is presented to the application by the above stated uC. At my current state of knowledge about xmega eeprom, I'm...
Wednesday, 30 January 2013 - 15:42
AT86 RF231 SLEEP to TRX_OFF transition
I'm reading the software programming model (swpm) and the datasheet (ds) of RF231 802.15.4 transceiver. They report a tTR2 time to change the radio state from SLEEP to TRX_OFF. On...
Friday, 19 October 2012 - 08:59
Xmega 256 a3u power consumption
Hi all, I'm messing with these micros and using the same code on all of the below described cases. I'm experiencing a power consumption of about 60uA in sleep mode with an xmega...
Thursday, 11 October 2012 - 15:34
Flashing boot section on XMEGA256A3
Hi all, I'm trying to flash the boot section of an Xmega256A3U (G rev.). I have a boot memory section @ address 0x40000 and I have code residing there : $#> avr-objdump image....
Thursday, 2 August 2012 - 10:04
Software access (erase/write) to flash on Xmega
Hi all, In AVR1008 they mention a bug affecting Flash accessing for the ATXMEGA256A3B (they state that revision B only is affected). I'm dealing with a ATXMEGA256A3U micro, and...
Wednesday, 1 August 2012 - 13:31
realloc bug in avrlibc
I'm experiencing a bug in the realloc when trying to realloc to a chunck of size 1; in such case, the realloc provides me with a size 1 chunk, but when I free that,it can happen...
Friday, 22 June 2012 - 10:02
avr-libc malloc IRQ protection
Hi all, I cannot find any stubs left into the malloc implementation to fill with IRQ disabling/enabling routines. Is this supposed to be handled from outside (on ARM newlib there'...
Thursday, 24 May 2012 - 10:10
Question on registers backup behaviors
Hi folks, I see the Call-Used registers must be saved by the caller (by definition) in avr-libc doc (pag 73). As the caller does not know (does it?) which of these registers shall...
Monday, 14 May 2012 - 07:38
avr flash usage after the first 128KB
I'm having troubles with C++ objects static constructors when those are mapped after the 1st 128KB (basically this applies to any code that I wish to run before running the main...
Friday, 27 April 2012 - 15:46
jump to function using specific registers
Hi all, I'm trying to write a function that jumps to another using WELL SPECIFIED registers EIND, : static __always_inline void jump(void){ asm volatile { ldi r30,...
Tuesday, 24 April 2012 - 16:04

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