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Beagleboard and Friends

Beagleboard and Friends. Nathan Gough. Hardware – OMAP3. Based around Texas Instruments OMAP3530 “Applications Processor” OMAP3 Platform: Arm Cortex-A8 600MHz, superscalar. NEON multimedia instruction set Paired with a C64x+ DSP core

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Beagleboard and Friends

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  1. Beagleboardand Friends Nathan Gough

  2. Hardware – OMAP3 • Based around Texas Instruments OMAP3530 “Applications Processor” • OMAP3 Platform: • Arm Cortex-A8 • 600MHz, superscalar. • NEON multimedia instruction set • Paired with a C64x+ DSP core • VLIW core. 6 ALUs, single 32 bit arithmetic per clock cycle • Two multipliers supporting 4 16x16 bit multiply per instruction cycle

  3. Hardware – OMAP3 • POWERVR SGX Graphics Accelerator • 10M Polygon/sec Tile based processor • Multithreaded shader engine: Pixel and vertex • Supports OpenGLES 1.1 and 2.0, OpenVG1.0

  4. Beagleboard – Rev. C

  5. Hardware - Beagleboard • OMAP3530 forms the core of the board. • Uses Package on Package stacking of memory on top of OMAP • Memory: • 256MB NAND, 256MB DDR SDRAM • Interfaces: • DVI-D (via HDMI connector), JTAG, RS232, USB2 OTG • Stereo In, Stereo Out, S-Video, USB2 Host • Expansion Header: I2C, I2S, SPI, MMC/SD • Can be USB bus powered or take DC power

  6. Using the Beagleboard • Booting: • NAND -> USB-> UART -> MMC • Or USB -> UART -> MMC -> NAND (changed by pushing USER button on board) • Uses U-Boot (Universal Bootloader) • Provides a simple CLI to manipulate hardware prior to booting a kernel • MMC/SD is the only way to bring up a new board. • Also used to recover from bad NAND writes • Boot output appears on UART3

  7. Beagleboard - Software • Distributions you can use: • Angstrom (what I’ve used) • Ubuntu • Android (Google’s open source software stack for mobile devices) • + about a million other embedded linux distros. • Applications: • Ffmpeg (compiled with NEON optimisations) • Omapfbplay (uses OMAP framebuffer; can do 720p decoding) • Anything you can build…

  8. Developing for Beagleboard • Openembedded (OE): • Provides an easy to use build environment • Collection of metadata about software packages • Uses bitbake “recipes” to build software • Collections of recipes form images eg “x11-image, console-image” • Other options: • Use the Android SDK • Build your own toolchain • Start from a ready made image

  9. Links • www.beagleboard.org • Elinux.org/beagleboard (user wiki <- best source of information) • http://www.angstrom-distribution.org/ • http://wiki.openembedded.net/index.php/Main_Page • http://focus.ti.com/docs/prod/folders/print/omap3530.html

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