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Discussion Title Created date
Antenna design
I have a datasheet describing antenna design for a radio IC. In the following clip from the datasheet, what does "relieve" mean? Antenna capacitance should be minimized. To...
Friday, 25 January 2008 - 20:29
3 wire SPI connection
I'm planning to connect an AT45xxx Series Dataflash device to an AVR MCU through SPI and considering the following approach: AVR MISO...
Thursday, 17 January 2008 - 21:08
Clock generation
Is there a low cost single chip way to derive a 32.768 kHz clock from an 8 MHz clock source? I've been reading about clock dividers and plls but what I've found just multiplies or...
Tuesday, 18 December 2007 - 05:42
Inductor types
What is the difference between a "power inductor" and a "common mode inductor"? I haven't found much detail through searching (other than vendors' product lists). If I'm using an...
Saturday, 15 December 2007 - 05:34
Capacitor confusion
I'm building a prototype circuit around an AT90USB162 that is powered by USB VBUS (+5v), and I'm confused about what type and size of cap should be used for power decoupling. I...
Friday, 14 December 2007 - 02:26
SHA-1 for 8-bit AVR
I am looking for a SHA-1 implementation for small AVR's with only 512 bytes of sram (like the AT90USB162). I found this library here on avrfreaks that I'm examining, but I'm...
Friday, 9 November 2007 - 23:28
usb framework bug
I am working with the at90usb162-hidgen-1_0_1 example firmware from Atmel and found a buffer overflow bug I thought others might want to know about (I also sent Atmel an email)....
Monday, 5 November 2007 - 23:39
USB communication problem
I've hit a wall with a usb communication problem. I'm getting occasional timeouts for interrupt IN reads. This is my setup: STK526 board with an AT90USB162, connected via usb to...
Friday, 2 November 2007 - 00:47
Large binaries
This is not a very specific question, but I'm wondering what experience people have improving the code density for avr-gcc compiled firmware. I am building the USB Generic HID...
Thursday, 25 October 2007 - 19:27
avr-libc .o not found
I'm trying to build an at90usb162 project with a makefile generated from mfile on linux using avr-gcc 4.2.1 and avr-binutils 2.17. I've built avr-libc 1.4.6 ok, but when I try to...
Friday, 19 October 2007 - 00:20
illegal opcode jmp compiling avr-libc
I am trying to build avr-libc 1.4.6 under Ubuntu (7.10 32bit) using avr-gcc 4.2.1: http://packages.ubuntu.com/gutsy... When building the library for the at90usb82 I get the...
Wednesday, 17 October 2007 - 06:48
Socket adapter
I've been looking for a way to plug a 0.05 inch centerline plug (aka terminal) into a standard breadboard with 0.1 inch holes. Specific, I want to plug the following into the...
Monday, 11 June 2007 - 23:53

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