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getting USB to work at all
My target is a atmega32u4. I can connect to it with JTAG and a USB cable. As a practical matter, that is it. My immediate goal is to make LUFA work at all: A CDC that will emit...
Fri. Apr 13, 2018 - 09:13 PM
What does rww enabling accomplish?
After reading datasheets on this, I'm still pretty fuzzy on it. My understandings and suspicions: RWW is a subset of the application section. The bootloader section is part of the...
Mon. Mar 19, 2018 - 01:38 AM
why does pgm_get_far_address work?
https://www.nongnu.org/avr-libc/... wrote: #define pgm_get_far_address(var) \ ({ \ uint_farptr_t tmp...
Fri. Mar 16, 2018 - 05:28 AM
What options did gcc get?
Is there a way to tell GNU's gcc or ld what arguments it thinks it got? Same answer for avr-gcc and avr-ld?   For me, the issue comes up when using them through another tool...
Sat. Feb 24, 2018 - 12:24 AM
solved: what fuse setting for atmega2560 bootloader
<edit> title How do I get an atmega256 to reset to a bootloader? I'd thought that the low bit of hfuse was the thing to change, but that does not seem to work for me. Would...
Wed. Feb 21, 2018 - 09:59 PM
how does avrdude decide what elf sections to put in flash?
Recently I had trouble because not all of my code was making it onto flash. Some of the code was not in the .hex file because avr-objcopy had not been told to include all the...
Wed. Feb 21, 2018 - 06:17 PM
solved: AS7 vs. CLion and Atmel ICE
Yet another adventure in Atmel ICE recognition.   A colleague did some stuff with Zadig to make the Atmel ICE useable by CLion. Naturally it was no longer useable by AS7....
Wed. Jan 31, 2018 - 12:15 AM
what is avr-size output
Unless told otherwise, avr-size prints columns labeled text, data, bss, dec, hex and filename. Filename I'm pretty sure of. What do the others mean? A pointer to TFM would help....
Wed. Jan 24, 2018 - 05:53 PM
how do i get atmel-ice driver back?
The forum seems to have eaten another post.   I seem to have done it again. In yet another struggle to get AS7 to see my atmel ice, I seem to have deleted or damaged its...
Tue. Jan 16, 2018 - 10:07 PM
failure to launch Atmel-ICE
AS7 is claiming the non-existence of my Atmel-ICE fairly frequently. Previously a cure was to swap in a different A-ICE and swap it out again. That didn't work this time. AS7...
Tue. Jan 16, 2018 - 01:06 AM
where do I fiind the stack pointer?
In AS7, is the stack pointer in data mapped IO? In the case of an ATmega2560, at addresses 0x3D and 0x3E? The numbers look about right, but I'd like the information from someone...
Sat. Jan 13, 2018 - 12:46 AM
solved: doing an offline stack trace
For want of a better way to do a stack trace, I wrote code to dump the stack on a watchdog interrupt. I'm getting results I do not believe. The idea is to examine the stack...
Fri. Jan 12, 2018 - 05:48 AM

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