Difference between revisions of "BeagleBone Black RFID Adaptor Cape"
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== YouTube Video == | == YouTube Video == | ||
{{#evp:youtube|sedLk9fQFSk| Cape2Login: Login to your computer without a password with your RFID badge ~ Cape2Shop: Eliminate checkout lanes and personalize shopping with RFID tagged items |left|500}} | {{#evp:youtube|sedLk9fQFSk| Cape2Login: Login to your computer without a password with your RFID badge ~ Cape2Shop: Eliminate checkout lanes and personalize shopping with RFID tagged items |left|500}} | ||
− | {{#evp:youtube|WD-8vUvm6Sc| Examples of demonstrations include Identification and Video Streaming . For Video Streaming source code, check out [https://github.com/shengzhao91/RFID_Adaptor_Cape/tree/master/RFID_VideoStreaming here] | | + | {{#evp:youtube|WD-8vUvm6Sc| Examples of demonstrations include Identification and Video Streaming . For Video Streaming source code, check out [https://github.com/shengzhao91/RFID_Adaptor_Cape/tree/master/RFID_VideoStreaming here] |right|500}} |
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Revision as of 15:08, 31 July 2013
The RFID adaptor cape is an interface between the Beaglebone Black (BBB) and Texas Instrument's TRF7970ATB, (Multi-Protocol Fully Integrated 13.56-MHz RFID and NFC Transceiver).
Features:
- Fully functional RFID and NFC capabilities on the BBB
- Three status LEDs, one power LED, Push button
- Communication via SPI
- Compatible with TRF7960/A and TRF7970/A Target Board (TB)
- TB supports ISO15693, ISO18000-3, ISO14443A/B, and FeliCa
Applications:
- Item identification
- Live video stream to PC initiated with RFID
- Conveniently log in to PC with RFID without entering password
Contents
YouTube Video
{{#evp:youtube|sedLk9fQFSk| Cape2Login: Login to your computer without a password with your RFID badge ~ Cape2Shop: Eliminate checkout lanes and personalize shopping with RFID tagged items |left|500}}
{{#evp:youtube|WD-8vUvm6Sc| Examples of demonstrations include Identification and Video Streaming . For Video Streaming source code, check out here |right|500}}
Schematic
Sample Code
Source code: RFID Application on GitHub.
This C application will constantly scan for RFID tags within the vicinity of the reader. Once a tag is detected, its UID will be stored in uid.txt file.
SPI Device Tree Overlay Setup
Since SPI pins are not automatically enabled on BBB, a device tree overlay is used to configure the pins properly for SPI use.
The following information is slightly modified from BeagleBone Black Enable SPIDEV to suit for the cape.
NOTE: You MUST disable the HDMI interface to use SPI1 to talk to the adaptor cape.
Create a file called BB-SPI1-01-00A0.dts
Compile the dtc:
dtc -O dtb -o BB-SPI1-01-00A0.dtbo -b 0 -@ BB-SPI1-01-00A0.dts
Then, copy the file into /lib/firmware/:
cp BB-SPI1-01-00A0.dtbo /lib/firmware/
Then enable the device tree overlay:
echo BB-SPI1-01 > /sys/devices/bone_capemgr.*/slots
Plug in your BBB to a host computer using the mini usb data cable.
Go to My Computer>BeagleBone Getting Started> and open uEnv.txt Copy and paste this command into the .txt file. Make sure to save your changes. (Ctrl+s)
optargs=quiet drm.debug=7 capemgr.disable_partno=BB-BONELT-HDMI,BB-BONELT-HDMIN capemgr.enable_partno=BB-SPI1-01
Save the changes, reboot Beaglebone Black.
Make sure it is enabled
You should now have two spidev-files in the folder /dev/
ls -al /dev/spidev1.0
If you don't see it, you can type the following to manually enable the device tree overlay.
echo BB-SPI1-01 > /sys/devices/bone_capemgr.*/slots
Eagle Files
Eagle Schematic
Eagle Board Layout
Gerber Files
Group Picture
Promo Video
{{#evp:youtube|f3jv0FzXaXM| Promo Video |center|200}}