Vissim/ECD Software Supports Delfino Controllers

Adept has introduced Version 7.0 of Visual Solutions' (VSI's) Vissim/ECD rapid-prototyping software, which supports Texas Instruments' (TI's) Delfino floating-point digital signal controllers (DSCs). Providing 600 million floating-point instructions per second (MFLOPS) at 300MHz, the C2834x devices bring high performance and software development to embedded applications such as industrial control, medical devices, digital power conversion and advanced sensing. Version 7.0 adds support for the C2834x series to its existing support of all previous F28xx controllers.

Vissim/ECD allows developers to program the C2834x DSC without writing a single line of code by constructing block diagrams to form DSC algorithms. With blocks to support standard maths and signal processing operations, as well as all of the on-chip peripherals of the C2834x controllers, programming for TI DSCs is said to be simple. The ability to simulate algorithms on the PC allows offline troubleshooting and optimisation, shortening development time by a factor of two or more and removing the need for a dedicated programmer.

Vissim/ECD's advanced code generator results in fast sampling rates and low RAM usage, comparable to hand-coded assembly. Andrew Soukup, C2000 worldwide marketing manager for TI, said: 'Vissim/ECD provides designers with the ability to develop an entire application based upon the C2834x controllers working only at the block diagram level while utilising the full performance of the C283xx. 'With this new offering, VSI allows any developer, even those without prior DSC experience, to quickly bring new products to market,' he added. Vissim/ECD Version 7.0 includes support for the increased RAM and clock speed as well as the additional CAP, SPI and floating-point unit on the new C2834x controller series from TI.

In addition, Vissim/ECD Version 7.0 provides general programming features such as: automatic peripheral programming; a choice of interrupts for graphical interrupt handler creation; a stack and heap probe; check-box-enabled background thread scheduling; state machine-driven serial protocol handling; control sampling rates over 1MHz on C2834x parts; an interrupt-driven serial queue for SCI, I2C and SPI with user-selectable queue lengths up to 255 bytes; and a low-memory footprint that uses as little as 750 words flash and 80 words RAM for PID control of a quadrature encoder-sensed, PWM-actuated, closed-loop control application. Vissim/ECD's advanced feature set eradicates the need for C and assembler programming.

Systems designers who are unfamiliar with TI's DSCs or hand coding can now take advantage of the software development provided by the C2834x controllers, which can eliminate weeks or even months of development time. Dr Ziaur Rahman, director of electrical controls at Electric Motion Systems, is using Vissim/ECD Version 7.0 to develop PMSM electric motor control using the TMS320F2801 controller from TI. According to Rahman, Vissim/ECD is an essential tool for developing vector motor controls for electric bicycles. Code development time is said to be reduced with Vissim/ECD's ready-to-use block sets and debugging capability.

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