Elastic Sheep

Because elasticdog was already taken

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Entries from April 28th, 2010

Teensy2 USB WAV player – Part 1

April 28th, 2010 · 2 Comments · Uncategorized

I had plans to implement a small WAV playback application making use of a FAT32/SD card file access. Considering my published demo with SD card Mass Storage, the plan evolved to a more ambitious endeavour: implementing the basic blocks of a WAV player. The archetype model for this project is the MP3 player device. It [...]

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PL-2303 serial adapter, cu and Snow Leopard

April 25th, 2010 · 5 Comments · Uncategorized

I am using a PL-2303 USB-to-serial adapter when connecting to serial interfaces. After having installed Snow Leopard and reinstalled the Prolific PL-2303 driver (32-bit version from prolific), I found myself prevented from lauching cu to connect to the serial port: elasticsheep:~ mathieu$ cu -s 9600 -l /dev/cu.usbserial cu: creat during lock (/var/spool/uucp/TMP00000000c8 in /dev as [...]

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Teensy2 USB Mass Storage with an SD card

April 12th, 2010 · 36 Comments · Uncategorized

Iterating on my precedent post, the next logical step is to use the USB interface to access the SD card connected to the Teensy2/ATMEGA32U4 with a Mass Storage profile. LUFA Mass Storage demo The LUFA library offers a mass storage demo. It is based on the AT90USBKEY demonstration board that provides two onchip serial flash [...]

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