1 / 17

Embedded Product Design

Embedded Product Design. The Initial Concept of a Product. Top-level management Composed primarily of engineers Marketing Feedback from customers and trade shows Engineering Direct research, trade publications, competitor’s website, etc. Initial Concept Development Stage.

dianacarroll
Download Presentation

Embedded Product Design

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Embedded Product Design

  2. The Initial Concept of a Product • Top-level management • Composed primarily of engineers • Marketing • Feedback from customers and trade shows • Engineering • Direct research, trade publications, competitor’s website, etc.

  3. Initial Concept Development Stage • Bring in managers and experienced engineers to discuss feasibility of concept • Cost, cost, cost • Consistent with company goals? • Feasible hardware and software design approaches exist? • Treat engineering as one resource pool

  4. Product Architecture Definition • Continue meetings to create and identify implementation strategies for both hardware and software • Manager assesses product architecture and breaks it into logical blocks that can be assigned to engineers

  5. Preliminary Hardware Design • Lead project engineer focuses the effort • Sources of hardware design ideas • Engineering manager • Proven hardware blocks / modules • Leverage other engineers’ experience • Creativity and ingenuity • Research chips for functionality and interconnect

  6. Design Re-use • Reference other proven designs • Benefits • Time to market • Product quality

  7. Hardware Design Issues • Stay informed of current design solutions • Internet (app notes, etc.) • Distributors (training classes) • Also use for price quotes and availability • Buy third party solutions? • Logic blocks for an FPGA • Chipset with supporting software driver • DSP’s, intelligent peripherals, etc.

  8. Hardware Design Issues • Work with compliance engineers • Piece everything together • Integrate reused blocks with new ideas on a schematic • Doesn’t have to be perfect: Time to Market • Power Supply? • Detailed design review • Cost, features, schedule, target market

  9. Before Hardware Arrives . . . • Order printed circuit boards • Hardware-related software issues • Processor and peripheral initialization code • Low-level peripheral driver code • VHDL needed for FPGA? • Software designers begin s/w development

  10. The Real Work Begins . . . • Loaded printed circuit boards arrive • Make the hardware work • Check for obvious problems (e.g., pwr/gnd short) • Bring up the memory subsystem • Execute initialization code using non-volatile memory or debugger • “Talk” to peripherals

  11. Transition To The Software Design Phase • Get hardware to the software designers as soon as possible • Hardware design continues until the product is released (in full production) • Incorporate improvements, new features, fixes • Continue to work with compliance engineering • Work with test engineering • Design verification testing

  12. Embedded Software Design • Refine initial software architecture • Architecture is based on well-defined blocks (modules) • Obtained from Adtran software “repository” • Purchased from 3rd party vendor • Designed by engineering

  13. IP Stack Management Operating Telnet TFTP System TCP UDP IP PPP Engine Frame Relay Engine HDLC Controller Drivers V.35 Serial User I/F Serial Phone Ports DS-1 DSX-1 Ethernet

  14. Software “Repository” • Makes use of a centralized server • Facilitates design re-use • Software modules facilitate re-use when written with modularity in mind • Visualize the module as an independent functional block with distinct inputs and outputs • Use object-oriented programming (C or C++)

  15. Major Areas of Embedded Software Design • Initialization software (or boot code) • Worked on jointly by hardware and software engineers • Operating system • Proven, in-house operating system • Scheduler, semaphores, message queues • Application software

  16. Application Software Issues • Consumes vast majority of development time • Composed of many modules that collectively define the functionality of the product • Continually working with product quality engineers during software development • Certain customers serve as beta test sites

  17. Software Standards • Conformance to a standard • Software engineer must read, understand, and implement the standard • Interoperability with other vendor’s products • Travel to interoperability labs toward the end of software development • ANSI, ITU, IETF, IEEE, and various forums

More Related