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SBC RDK loads multiple connectivity options

Posted: 13 Apr 2009 ?? ?Print Version ?Bookmark and Share

Keywords:connectivity option? single board computer? SBC RDK?

Luminary Micro has launched the new Stellaris Intelligent 3.5-inch landscape display single-board computer reference design kit (RDK-IDM-SBC) featuring fully integrated 10/100 Ethernet (MAC+PHY), USB host and CAN interfaces.

Based on the feature-rich Stellaris LM3S9B92 microcontroller, the new intelligent display reference design combines a 3.5-inch QVGA landscape-oriented touchscreen user interface with several serial, digital and analog connectivity options for easy implementation as a Human Machine Interface (HMI) touch display panel in an embedded control device. Software development for the RDK-IDM-SBC is simplified by using Luminary Micro's StellarisWare Graphics Library, USB Library, Peripheral Driver Library and ARM development tools from ARM tools partners. Stellaris IDMs are the first display modules available with the efficient performance and robust integration of an ARM Cortex-M3 microcontroller, positioning the modules into building access controllers and security systems, intelligent white goods and home appliances, thin clients, and factory automation applications.

"The IDM-SBC represents the fourth open-tooled Stellaris Intelligent Display reference design that Luminary Micro has launched in response to direct customer feedback," said Jean Anne Booth, Chief Marketing Officer at Luminary Micro. "The highly integrated RDK-IDM-SBC, along with Luminary Micro's free StellarisWare Graphics, USB, and Peripheral Driver Libraries, significantly shortens the time-to-market advantage for OEMs looking to enhance new and existing products and systems with a network-connected graphical user interface."

Touchscreen, connectivity options
Featuring a 3.5-inch landscape-oriented QVGA 16bit color LCD resistive touch panel display with white LED backlight, the compact Stellaris RDK-IDM-SBC design takes full advantage of the vast connectivity features included in the integrated Stellaris LM3S9B92 MCU. The connectivity options include 10/100 Ethernet RJ45 Jack, USB 2.0 Type A connector, CAN through a terminal block interface and UART and I2C through an expansion header.

In addition to the LM3S9B92 MCU's integrated 256Kbit of flash memory and 96Kbit of SRAM, the SBC intelligent display reference design offers extended board-level memories including 8Mbyte SDRAM connected via the external peripheral interface on the LM3S9B92 MCU, 1Mbyte of external serial flash, USB host connector for external mass storage, and a MicroSD card slot for image, data and code storage. The design also features I?S audio codec with power amplifier to drive an external 8? speaker. The board is powered by a terminal block connection to a wide input range 12Vdc to 40Vdc power supply with auxiliary 5V power output.

Software support
The software for the SBC display module includes the royalty-free StellarisWare Library suite, including the StellarisWare Graphics Library, StellarisWare USB Library, and StellarisWare Peripheral Driver Library. The libraries provide an easy C/C++ applications programming interface that generates graphical elements for the IDM, eases point-to-point connectivity using worldwide serial interface standards, and controls the peripherals found on the LM3S9B92 MCU, respectively.

Perhaps even more enticing is that the library is completely stored in factory-programmed ROM on the LM3S9B92 MCU. In addition, the StellarisWare Library suite includes programming support for the IEC 60730 standard, especially useful for manufacturers of household appliances, including washing machines, dryers, refrigerators, freezers, and cookers/stoves. The software support also includes a board support package that provides software drivers for the touchscreen, the SD card interface, the relay output, the sound capability, in-system programming support and the analog inputs.

The LM3S9B92 microcontroller used in the IDM-SBC reference design features the StellarisWare Bootloader in preprogrammed ROM, allowing users to download code to flash memory for firmware updates through a serial interface, such as UART, I?C, SSI, Ethernet, CAN, or USB. Other memory-saving options preprogrammed in ROM include cryptography and error detection with Advanced Encryption Standard tables (covers all three key sizes: 128, 192, 256 bits) and the CRC function.

The SBC intelligent display RDK includes the IDM-SBC board, a CAT5 cable for Ethernet interconnectivity, a USB stick, 8? speaker, universal power supply, a debug adaptor that allows connection to the 10-pin JTAG interface on the board with a standard 20-pin ARM JTAG debugger, and CD containing all the module design information, including schematics, BOM, Gerber files, software source code, and documentation. All of the reference design information is openly available, NRE- and royalty-free, for use and modification on any Stellaris-based design.

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