Post Created date
The "guts" of USB
If you can make sure that your sniffer is placed downstream of just the keyboard and not downstream of any hubs, you don't have to filter out any data at all - it will be only the...
Wednesday, 2 December 2009 - 17:02
Static analysis and program profiling
Clang seems to be the most promising free static analyzer for C/Obj-C/C++ right now, but alas there is no AVR target for LLVM. This has been something I've been meaning to take a...
Wednesday, 2 December 2009 - 07:09
access to program counter via jtag
atomicdog wrote:I believe the specific JTAG instructions are in the datasheet. As far as I know, only the memory programming commands are given out publicly. The datasheet for my...
Wednesday, 2 December 2009 - 07:05
access to program counter via jtag
Well you could use avr-gdb (possibly hacked up for your purposes) and a JTAG ICE debugger to do this. If you want to do this from some other micro, you're going to have more work...
Wednesday, 2 December 2009 - 06:57
AVR8 FPGA soft core
During my brief survey of soft-cores at OpenCores, I didn't find an AVR core that looked featureful, mature or small. I think that, for most people, a non-AVR soft-core will be a...
Saturday, 21 November 2009 - 03:12
gcc – how to use multiple CPU cores for compilation?
JohanEkdahl wrote:Well, as often, the advide to read the fine manual is applicable. (I get away with my above post without actually checking first because I used the word "might...
Saturday, 21 November 2009 - 02:31
What oscillator/crystal for USB?
For the AT90USB1287 (and I'm guessing the other USB AVRs) you have to use an external crystal if you want to use the USB peripheral. There is a PLL that lets you use a few...
Saturday, 14 November 2009 - 21:40
What is electricity?
What is electricity? My livelihood! :)
Wednesday, 9 September 2009 - 12:46
(Outdated) Script for building AVR-GCC 4.5.1 on Linux
Bingo, perhaps you should note that to download (and even see!) the scripts, you have to be registered and logged in. I always come to get the scripts when I am logged out and...
Thursday, 3 September 2009 - 22:41
Help interfacing a multiplex VFD display
Nice to see this thread still going! I thought that I'd share a video of what ended up being the near-final result of our project. Don't mind the giddy laughing and excitement -...
Thursday, 2 July 2009 - 03:18
finding CRC polynomial from data
Don't forget the reverse of common polynomials!
Wednesday, 29 April 2009 - 16:41
My Dragon died, Just like that!
I've found my JTAG mkII to be very resilient to my daily abuse. Unfortunately, debugWire is somewhat glitchy with an ATtiny861 (I sometimes need to use HV programming to reset the...
Monday, 20 April 2009 - 06:31