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Quick-Start Guide
5
DLPU049A–July 2017–Revised August 2017
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Figure 6. BeagleBone Black Host Processor
After installing the BeagleBone-compatible Debian image, an interface between the host processor and
the user must be established. There are two ways of going about this:
• Onboard mini-HDMI video output with USB keyboard and mouse connection
• Remote connection via SSH terminal application (such as PuTTY for Windows users)
Using a remote SSH connection is recommended for its flexibility and ease of use. Before continuing,
download PuTTY (or refer to your preferred SSH terminal application) from the creator's website located at
http://www.putty.org/. Included on the website are documentation links to provide more detailed
information on how to use PuTTY. (1)
Once the system is set up properly, the BeagleBone Black will communicate with the EEPROM on the
DLP LightCrafter Display 2000 EVM on boot-up. This will tell the BeagleBone Black to load the
appropriate daughter card (or cape) overlay to configure the GPIO ports on the host processor. Once the
cape overlay is loaded, the host processor can interface with the EVM through:
• Parallel I/F video data (via RGB888)
• Issuing I2C commands (via I2C commands)
• Enabling/disabling the EVM (via PROJ_ON_EXT)
Support for use of these features with the DLP LightCrafter Display 2000 EVM is included in the
BeagleBone Black support scripts, which can be found in the "opt/scripts" directory and executed from the
terminal command line. More information on this can be found in the "Example Application" section
(Section 4). To access the BeagleBone Black terminal, please follow the networking access guide at
http://elinux.org/Beagleboard:Terminal_Shells.
I2C commands can be issued by using the aforementioned shell scripts but can also be issued manually
using the I2C terminal commands "i2cdetect", "i2cget", "i2cset". These commands use the onboard I2C bus
to communicate with peripheral devices attached to the host processor. Use of these commands is
documented at http://elinux.org/Interfacing_with_I2C_Devices. For further information, the "man"
command in Linux can also be used to access internal manuals for "i2cdetect", "i2cget", and "i2cset".
Please refer to Figure 7 and Figure 8 for example usages of these commands within a Linux ssh terminal
interfacing with the BeagleBone Black. Typically, the DLPC2607 is located at address 0x1b and the
EEPROM is located at address 0x54, 0x55, 0x56, or 0x57 depending on the configuration of jumpers J4
(Bit 1 of address) and J5 (Bit 0 of address) on the EVM. By default, the EEPROM device address is 0x54.
