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Merging ASF & LUFA (& FatFS?)
I'm migrating an AVR8 project that used LUFA & FatFS to UC3. While I know ASF provides both of these functions, I've made some small additions to LUFA to support my project,...
Tuesday, 20 September 2011 - 13:21
Reading the SD Card on EVK1104
I just got an EVK1104 and my application requires read (and maybe write) access from an SD Card. I'm going through the examples that use the SD card, but I'm trying to understand...
Monday, 19 September 2011 - 16:12
EVK1104 Missing Bootloader?
I just ordered a new EVK1104, which I understood should be programmable through USB, by using DFU (BatchISP or dfu-programmer). I have my EVK1104 on my desk now, powered up, and...
Tuesday, 13 September 2011 - 15:59
Best way to measure negative voltage?
I'm trying to measure a negative voltage using an ATmega2560's ADC. It's a -12V power rail, which I expect to be relatively steady, but not certain. I obviously can't plug it...
Friday, 26 August 2011 - 21:08
Expected Read Speed from SD Card
I'm using an AT90USB1286 (Teensy++ 2.0) to read an SD Card and pump data back to a computer. No, it's not fast, but it's an easy way to trick the computer into thinking it's a CD...
Friday, 19 August 2011 - 21:20
Compile Problem with FatFS & _USE_FASTSEEK
I'm trying to experiment with _USE_FASTSEEK in FatFS, and I'm seeing the following compile error: Lib/ff.c: In function 'f_lseek': Lib/ff.c:2947: error: unable to find a...
Tuesday, 16 August 2011 - 21:10
USB MassStorage & 4 Bit SD Interface
I'm exploring options for a USB 2.0 project with a 4 bit SD Card interface, instead of the SPI interface. It looks like ASF supports everything I need, but I'm somewhat concerned...
Tuesday, 16 August 2011 - 16:22
[LUFA] USB Reset
I just got my hands on a Beagle 480 USB Protocol Analyzer (yay!) to help debug some problems I'm having with a LUFA project I'm working on. I just finished a capture, and one...
Friday, 12 August 2011 - 17:47
[LUFA] Trouble with SCSI Commands
I'm having issues with a SCSI Read(10) command failing on my Teensy++. I'm using LUFA & FatFS to emulate a CD-ROM, I've successfully opened the ISO file and can return the...
Tuesday, 2 August 2011 - 16:12
LUFA MassStorage Returning Code Snippets
I'm currently using the LUFA MassStorage demo to try to read from an SD Card. I was having trouble with the FatFS calls, so I've created the following test to make sure the LUFA...
Tuesday, 26 July 2011 - 15:31
Help with LUFA & FatFS
I'm trying to get LUFA and FatFS to play nice and running into some problems. I'm using a Teensy++ 2.0 (AT90USB1286) connected to a SD Card. For communication with the computer...
Monday, 18 July 2011 - 18:54
SPI Troubles
I'm trying to interface with an SD Card over SPI, something that should be pretty easy. I'm using an AVR-USB-STK, schematic found here: http://olimex.com/dev/pdf/AVR/AVR-USB-STK-...
Friday, 27 May 2011 - 18:05

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