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Kevin Mehall's USB stack
Has anyone got Kevin Mehall's USB stack working? It's based on the nonolith one I think.   https://github.com/kevinmehall/usb   I've imported it into Atmel Studio...
Thu. Jul 13, 2017 - 01:10 PM
Unrolling memset()
Hi. I'm trying to clear a 256 byte array as quickly as possible. At the moment I have:   memset(input_matrix, 0, 256);  With -O3 this produces:   memset(...
Mon. Jun 19, 2017 - 08:27 AM
ATXMEGA128A3U-MH out of stock, no more until October?!
The ATXMEGA128A3U-MH seems to be out of stock everywhere! What is going on?   Since Microchip took over, prices have rocketed and now they can't even make enough of the...
Thu. Jun 15, 2017 - 02:12 PM
Linux toolchains, debugging and IDEs
I'm considering a switch to Linux, due to Windows 10. The one major bit of software I'm unable to run on Linux is Atmel Studio 7, so I'm looking for alternatives.   I'm...
Wed. May 10, 2017 - 08:31 AM
Locking write access to the user signature row
Is it possible to disable write access to the user signature row?   The various lock bits only seem to allow disabling write access to the application section, the...
Tue. May 9, 2017 - 10:28 AM
PSA: HID report descriptor locations
Public Service Announcement   For some reason Atmel decided to hide the HID descriptor in the ASF code. If you create a new HID device, especially a generic one, it can be...
Tue. Mar 21, 2017 - 10:21 AM
ASF 4 / Atmel Start compatibility list?
There is a list of compatible devices for ASF 4 / Atmel Start anywhere?   I tried to make an XMEGA HID device and it seems that the driver part of the ASF is missing for...
Thu. Mar 16, 2017 - 10:04 AM
V-USB ported to XMEGA
I ported V-USB, the software USB stack from Objective Development for MEGA/TINY AVRs to XMEGA.   https://github.com/kuro68k/vusb-...   It's not tested much yet and still...
Thu. Feb 16, 2017 - 04:11 PM
Locator beacon idea using LoRa, comments please
Morning all. I have an idea I'd like to discuss for a new open source hardware device.   Yesterday my cat didn't come home all day, and I was worried. He's back now, but I'd...
Thu. Feb 16, 2017 - 09:29 AM
avr-nm and avr-size RAM use
I'm trying to get firmware designed for 8k RAM down to 4k RAM. avr-size reports:   Program Memory Usage : 65160 bytes 46.8 % Full Data Memory Usage : 5679 bytes...
Thu. Feb 9, 2017 - 10:48 AM
EDMA to DAC on E5
Hobby project time, I'm trying to DMA data from RAM to the DAC on an E5.   Everyone else who has done this seems to be using the EDMA in standard channel mode, rather than...
Mon. Dec 26, 2016 - 12:08 AM
E5 SPI buffer modes
I'm trying to understand the XMEGA E5 SPI peripheral's buffer modes. The manual states:    Buffered mode 2: The SPI module is single buffered in the transmit direction and...
Thu. Oct 20, 2016 - 08:02 AM

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