The Flyswatter is a low cost JTAG programmer / debugger for use with ARM (ARM JTAG) and MIPS (MIPS JTAG) cpu cores.
It uses the open source OpenOCD (Open On-Chip Debugger) software to provide debugging and in-system programming of embedded target devices.
- USB 2.0 Full Speed device interface (12 Mbits/sec)
- Can be used to debug and program all ARM and MIPS processors supported by OpenOCD
- Provides a standard ARM 14-pin (2 x 7)JTAG interface
- Adds a virtual RS232 serial port to your computer or laptop with full modem signals: TXD, RXD, RTS, CTS, DTR, DSR, DCD, RI
- Supports target voltages of: 3.3V, 2.5V, 1.8V, 1.5V, 1.2V (voltage range: 1.2V to 3.6V)
- No external power supply required – the Flyswatter gets its power from the computer’s USB port
- Open hardware – complete schematic provided
- Open software – software supported by OpenOCD (open source) debugger
- Package Includes: Flyswatter board, USB Cable and 8 inch 14-pin JTAG ribbon cable
- Dimensions: 2.5 inches (width) x 3.0 inches (height)
OpenOCD supports the following ARM cores:
|ARM CORE||EXAMPLE PROCESSORS|
|ARM926EJS||S3C2412, STN8811, STN8815|
|ARM11||S3C6400, OMAP2420, MSM7200|
|CORTEX-M3||LM3S series, STM32 series|
|XSCALE||PXA255, PXA270, IXP42X|
|MARVEL||FEROCEON CPU CORE|
OpenOCD also supports the following MIPS cores (requires a MIPS 14-Pin JTAG Adapter):
|MIPS CORE||EXAMPLE PROCESSORS|
JTAG Adapters plug into the ARM 14-pin connector located on the Flyswatter and change the pin-out to a different JTAG interface. Three JTAG adapters are available for the Flyswatter:
ARM 20-Pin JTAG Adapter – This adapter converts the Flyswatter’s JTAG interface into a standard ARM 20-pin configuration. The package also includes 14-pin ribbon cable.
BeagleBoard JTAG Adapter – This adapter converts the Flyswatter’s JTAG interface into a standard TI 14-pin JTAG configuration. The package also includes a serial adapter board that converts the DB-9 Male connector located on the Flyswatter to a 10-Pin ribbon cable. This ribbon cable is used on the BeagleBoard Rev B/C boards to interface to the serial port. The 10-pin ribbon cable is included in the package.
MIPS 14-Pin JTAG Adapter – This adapter converts the Flyswatter’s JTAG interface into a standard MIPS 14-pin JTAG configuration. The package also includes 14-pin ribbon cable.
The Flyswatter’s serial port provides you with an independent functional “USB to RS-232” serial device. The serial port is completely independent from OpenOCD on both Linux and Windows. You can use the Flyswatter’s serial port and never have to use OpenOCD or JTAG, or you can use it together with OpenOCD and have both a serial port and JTAG interface operating at the same time for debugging your target device.
For Linux, the RS232 driver for the FT2232 is part of the main kernel tree and is provided in most standard Linux distributions. In Windows, you have to load the Windows driver for the FT2232. Once the driver is loaded, Windows will assign a virtual COM port to the Flyswatter’s serial port. It operates just like a standard COM port. You can use the Flyswatter’s serial port on laptops or PC’s that do not have a 9-pin legacy serial connector.
Serial Port Interface
The Flyswatter How To and Flyswatter Windows How To guides show a new user how to connect the Flyswatter to the Beagleboard, and how to install and run OpenOCD and GDB Debugger. To reach the guide, follow the link in the section title.