AVR32913: EVK1105 Getting Started Guide 32-bit Microcontrollers

AVR32913: EVK1105 Getting Started Guide 32-bit Microcontrollers
AVR32913: EVK1105 Getting Started Guide
Features
• Powering up the board
• Preparing the board for audio playback
• Playing music
1 Introduction
The EVK1105 is a reference design and development system for the AVR32
AT32UC3A0512 microcontroller from Atmel Corporation. The kit is equipped with a
rich set of memories and peripherals that make the EVK1105 to a perfect audio
platform. This guide shows the user how to get quickly started with this kit.
32-bit
Microcontrollers
EVK1105 Getting
Started Guide
Figure 1-1 EVK1105 board
Rev. 32113-AVR32-07/08
2 Powering up the board
The EVK1105 offers three interfaces to power the board, from one of the two USB
interfaces or from an external source connected to the header J1. The board can be
powered from 3 different sources, external power supply, “USB VCP” and “USB
USER” connector. If two power sources are applied at the same time the following
priorities are used to select the current valid power source:
1. External power supply (header J1)
2. USB VCP
3. USB USER
That means that if an external power supply is connected to the board it has the
highest priority and will therefore serve as current power supply. Other power
supplies that are connected to the board at the same time will be ignored.
The input range on the external power supply header is from 3.3V to 5V. In order to
be able to supply external USB devices that are connected to the board the minimal
power supply specification should be 5V, 1A. This ensures that the board will work
properly if a USB device is connected that needs the maximum allowed 500mA as
specified in the USB specification. It is not possible to draw that amount of current
from the host through a normal USB cable but there are cables available that can be
connected to two hosts (such a cable is not a kit content).
In order to play music from a mass-storage device it is enough to power the board
from the USB VCP connector. Use the “Mini-B plug to std-A plug 1.5m USB2.0” cable
that is included in the kit and connect it between the host and the board USB VCP
connector.
Figure 2-1 Possible power input interfaces on the EVK1105
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More information about the different power inputs is available in the hardware user’s
guide.
When the board is powered the green LED, marked with “PWR”, will light up and the
default board firmware will start to run.
3 Preparing the board for audio playback
In order to play some music a USB mass-storage device must be connected to the
“USB USER” connector by using the “Mini-A plug to std-A receptacle” adaptor cable.
The adaptor cable is a kit content.
The default audio output should be configured to use the on board codec and thus the
jumpers on J6 should be set as indicated in the figure if not already set up like this.
Figure 3-1 Jumper settings on J6 for codec output to headphones
Connect a headphone or speaker to the jack in order to listen to the music.
4 Browsing the disk and playing music
After a mass-storage device has been connected to the USB-USER port the player
enters the disk browsing view. To control the application the touch sensors can be
used that are marked in the Figure 4-1.
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Figure 4-1 Touch sensors for controlling the audio application
4.1 Disk browsing view
In this view it is possible to browse the storage media but only MP3 files and
directories will be shown. Use the touch sensors to browse the storage media for the
music file or playlist you want to play.
ƒ UP: Browse the file list up.
ƒ DOWN: Browse the file list down
ƒ LEFT: Enter the parent directory. If the user is in the root directory of the current
selected storage media a touch of this button will result in a menu which lets the
user select a storage media.
ƒ RIGHT: Enter a subdirectory or play the currently selected file or playlist.
ƒ CENTER: Play the currently selected file or playlist.
By playing a file or a playlist the audio player will change its view from the disk view to
the play view.
4.2 Play view
Following functionality have the touch sensors in the play view.
ƒ
ƒ
ƒ
ƒ
ƒ
4
UP: Increase the volume.
DOWN: Decrease the volume.
LEFT: Play previous song in playlist or on disk.
RIGHT: Play the next song in playlist or on disk.
CENTER: If pressed short ( < 2s) pause the current song or play it again if we are
in the pause state. If pressed long ( > 2s) enter disk browsing view.
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5 References and further information
EVK1105 hardware reference: This is included in the AVR32 Studio and on the
avrfreaks wiki page (http://www.avrfreaks.net/wiki).
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6 EVALUATION BOARD/KIT IMPORTANT NOTICE
This evaluation board/kit is intended for use for FURTHER ENGINEERING,
DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY. It is
not a finished product and may not (yet) comply with some or any technical or legal
requirements that are applicable to finished products, including, without limitation,
directives regarding electromagnetic compatibility, recycling (WEEE), FCC, CE or UL
(except as may be otherwise noted on the board/kit). Atmel supplied this board/kit
“AS IS,” without any warranties, with all faults, at the buyer’s and further users’ sole
risk. The user assumes all responsibility and liability for proper and safe handling of
the goods. Further, the user indemnifies Atmel from all claims arising from the
handling or use of the goods. Due to the open construction of the product, it is the
user’s responsibility to take any and all appropriate precautions with regard to
electrostatic discharge and any other technical or legal concerns.
EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER
USER NOR ATMEL SHALL BE LIABLE TO EACH OTHER FOR ANY INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
No license is granted under any patent right or other intellectual property right of
Atmel covering or relating to any machine, process, or combination in which such
Atmel products or services might be or are used.
Mailing Address: Atmel Corporation, 2325 Orchard Parkway, San Jose, CA 95131
Copyright © 2008, Atmel Corporation
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Disclaimer
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