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Discussion Title Created date
generic 7-segment display library?
I've been searching for a generic (i.e. no restrictions on pin mappings) 7-segment library. I found one in the project section and another I found from a post a couple years back...
Monday, 1 September 2014 - 18:30
submitting avr-gcc bugs
Is there a way to submit bugs for avr-gcc similar to the avr-libc bug submission form? I just found a bug with lto in 4.8.x. Enabling lto breaks the .initN sections. i.e....
Wednesday, 20 August 2014 - 16:06
portable temperature measurement?
I'm looking for a portable way to read the internal temperature sensor on AVRs. avr-libc doesn't define anything for the ADMUX settings for the internal temperature sensor. The...
Tuesday, 19 August 2014 - 20:51
picobootSTK500 pre-alpha: < 256-byte STK500 compatible
I'm almost ready to start testing picobootSTK500, and would welcome code reviews to point out any bugs I may have missed thus far. https://code.google.com/p/picobo... Code size is...
Sunday, 10 August 2014 - 03:49
inline assembler problem
I'm trying to figure out avr-gcc inline assembler (and cursing my way through it...) $ make inlineasm.o avr-gcc -mmcu=attiny88 -DF_CPU=8000000 -Os -Wall -flto -Wno-main -c -o...
Saturday, 9 August 2014 - 04:17
how does Atmel test AVRs?
Does anyone know the details of how AVRs are tested at manufacturing? I'm asking because I've had 2 Attiny88-au chips where the internal pullups on PA0, PA1, and PC7 aren't...
Thursday, 7 August 2014 - 19:18
flaked out avr?
I have an AVR (tiny88) behaving quite strange. It's not dead, but it's not working properly either. It's a -au on a qfp-32 to dip board, and running a basic blink program....
Thursday, 31 July 2014 - 23:48
undocumented fuse bits
I've noticed some AVRs have undocumented fuse bits. For example on a tiny88, the default efuse is 0x07, while table 20-3 in the datasheet says the default is 0xFF, with SELFPRGEN...
Thursday, 31 July 2014 - 13:56
Testing 433Mhz RF antennas with RTL-SDR
Synopsis: half-wave dipole antenna gives ~10dB better performance than a quarter-wave monopole. http://nerdralph.blogspot.com/20...
Wednesday, 16 July 2014 - 06:03
code to control a HD44780 LCD display
I've just finished some new code for 2-line HD44780 LCD displays like the 8x2, 16x2 and 20x2 modules. http://nerdralph.blogspot.ca/201... One thing my code has that I haven't seen...
Tuesday, 15 July 2014 - 18:00
useless Atmel support
At the suggestion of people on AVRfreaks, I started submitting avr-gcc & avr-libc bugs to atmel support, despite my belief that it would be a waste of time. Jeorg may be...
Monday, 14 July 2014 - 10:24
interrupt on 2 lines going low?
V-usb doesn't have a 8Mhz version, and the code size is rather large, so I'm writing a small 8Mhz USB implementation. One of the things I'm doing to simplify the code is doing the...
Monday, 14 April 2014 - 17:40

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