The DLP LightCrafter Display 2000 EVM is a DLP type projection module of Texas Instruments.
DLPDLCR2000EVM Evaluation board | TI.com
It’s a platform enabling the use of DLP projection technology with Single Board Computers. and Its User’s Guide will assume the user is interfacing with a BeagleBone Black as an example.
In this post, I will explain about cotrolling the DLP LightCrafter Display 2000 EVM by Raspberry Pi 4 and Linege OS (one of the Android distrbutions).
LineageOS – LineageOS Android Distribution
Specification
- Projection Module : DLP LightCrafter Display 2000 EVM
- Host System : Raspberry Pi 4 Model B
- Host OS : Lineage OS 17.1
How to build the System
- Module Connection with wires
DLP LightCrafter Display 2000 EVM and Raspberry Pi 4 are suppoerted DPI Image input/output.
Referring to the following website for Raspberry Pi DPI Pinout
DPI at Raspberry Pi GPIO Pinout
The follwoing website has EVM’s pins map to the Raspberry Pi’s GPIO.
DLP® Pico™ Display Projector EVM-BeagleBone Black – Review – element14 Community
The follwoing website of Figure 13. has EVM’s pinout diagram.
TI DLP® LightCrafter™ Display 2000 EVM User’s Guide (Rev. C)
This system requires 26 GPIO Pin, Data0~17(RGB 6:6:6), VSync, Hsync, PCLK, DATAEN, 5V Power, GND, and I2C(SCLK, SDA) for controlling EVM.
2. Setup the System
- Setting Image Resolusion
A installed OS SD card has a boot/resolution file. Setting 640×480 output resolution in a file.
- Creating startup script for controlling DLP LightCrafter Display 2000 EVM.
data/local/userinit.sh
i2cset -y 11 0x1b 0x0c 0x00 0x00 0x00 0x1b i
i2cset -y 11 0x1b 0x0b 0x00 0x00 0x00 0x00 i
“11” is I2C device id after swiftshader setting below.
I2C command parameter is referred the following website Figure 8. “i2cset” Example Use.
TI DLP® LightCrafter™ Display 2000 EVM User’s Guide (Rev. C)
- Switching Raspberry Pi Image Output type
Execution a following script on a CUI terminal.
su
rpi4-graphics.sh swiftshader
reboot
After reboot, This system will execute userinit.sh.
The System Setup is complete !
Images of Android TV GUI Projection
A imperssion of Performance
The GUI response of host system using Raspberry Pi 4 is not good, so I look forward to performance of Raspberry Pi 5.