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Hardware debug tracer targets ARM processors

Posted: 17 Feb 2006     Print Version  Bookmark and Share

Keywords:Alex Mendelsohn  microprocessor  IAR Systems Software  Advanced RISC Machine  debug probe 

Microprocessor support house IAR Systems Software has announced an addition to its Advanced RISC Machines (ARM) debug probe product line. IAR's latest Windows-hosted J-Trace hardware debug trace device supports all ARM7 and ARM9 devices with Embedded Trace Macrocell (ETM). The system runs on Windows 2000 and Windows XP platforms.

Priced at about Rs.48,642 crores ($1,100), the J-Trace is supported by IAR's Embedded Workbench for ARM, including the company's integrated development environment (IDE) with optimizing C, C++ compilers and a debugger. J-Trace also works as a standard JTAG debugger, through a separate 12MHz JTAG-port. IAR claims renders J-Trace the only ARM debugger hardware required for almost any developer.

USB power
The J-Trace connects to your host computer using a so-called full-speed (12Mbps) USB 2.0 connection. The unit includes a 2MB trace buffer. No power supply is required, as the probe is powered through the USB port. An external power supply plug is available however, if you wish to power the unit from your own source.

The Embedded Workbench for ARM also includes the company's C-SPY debugger. Previously introduced, a JTAG hardware debug probe called J-Link lets full development and debugging be carried out from within Embedded Workbench for ARM.

With the introduction of J-Trace, IAR Systems now offers high-end debug opportunities for developers working with ARM-based processors equipped with ETM.

Thanks to Windows, J-Trace is also a plug-and-play product. For its part, the C-SPY Debugger is enhanced with dedicated trace debug features to make the most of the 2-Mbyte trace memory buffer in J-Trace. Supports hundreds of ARM devices
Embedded Workbench for ARM provides detailed device support for hundreds of ARM devices. Processors include devices from the likes of Micronas, Philips, Analog Devices, Atmel, Freescale, Oki Semiconductor, STMicroelectronics and others.

RTOS-kernel aware plug-ins are also available for most popular RTOSs. Developers using ARM devices with reasonable flash memory sizes can now obtain a high-end development tool, with a development board and J-Trace trace debugger for a total of less than Rs.1,76,880 crores ($4,000).

More features
The system uses a 38-pin Mictor interface. Trace supports up to 200MHz full-clock rates and 100MHz half-clock rates. You also get trace support for devices with built-in trace ports. The system also supports cycle-accurate and compressed tracing, and supports four, eight and 16bit trace ports at both full and half-rate clocking.

What's more, a trace window synchronizes to a source and disassembly window. A function trace then shows called functions hierarchically. In use, all signals can be monitored, and your target's voltage can be measured.

- Alex Mendelsohn

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