HappyJTAG2 FT2232-based JTAG debugger for AVR chips: This construction is based on HappyJTAG Idea, to implement JTAG interface into target avr system and debug it remotly via USB, without specific JTAGICE hardware. All job is done by PC softraware… Via … Read more
Seeed has a cheap JTAG programmer/debugger for both major FPGA/CPLD brands. It emulates both the Xilinx Platform USB Cable and Altera USB blaster JTAG programmers with a flip of a switch. As a Xilinx Platform USB Cable it is supported … Read more
Cliff bought an Amani64 CPLD shield for the Arduino, he had no way to program it except: I did have a Bus Pirate on hand, the ‘Swiss Army Knife’ of digital hobbyists. He successfully uploaded the LED blinking firmware onto the Amani64 with the … Read more
electronicia4u used a USB Infrared Toy as a JTAG programmer: After seeing circuit details I discovered it used some pic18F2550 as was almost compatible with dangerousprotypes IR Infrared Toy (also they used same xtal frequency), so I downloaded firmware and … Read more
Henrik writes: This seems like a clever open source project, you can order a free kit or build it yourself based on the FTDI chips. Free software to develop or educate yourself on jtag. goJTAG is the first university-driven open-source … Read more
A new alternative firmware for the Bus Pirate programs JTAG devices like the CPLD development boards using standard (X)SVF programming files. We also whipped up a PC utility that sends the files to the Bus Pirate from the command prompt. … Read more
tjtag is an open source WIFI router rescue utility by our friend tornado. It uses a parallel programming cable to write firmware back into a bricked router. Now zoobab has ported jtjag to work with the Arduino as a programmer. … Read more
A KT-link buffer clone supporting JTAG Serial Wire Debug is now available for Bus Blaster v2 pre-release testers. This should support the new 2-wire SWD debugging protocol when available in OpenOCD and urJTAG. The KT-link is the first FT2232-based JTAG … Read more
libswd is an open source library for the new 2-wire JTAG protocol called Serial Wire Debug. The developer is currently working to integrate it with OpenOCD and urJTAG. Most open source projects supporting SWD seem to be standardizing on the … Read more
It’s easier to program CPLDs and FPGAs from the Bus Pirate with a new firmware and PC application. The Bus Pirate has done JTAG with OpenOCD for a long time. OpenOCD is usually overkill for a simple CPLD or FPGA … Read more
Nathan Fain and Vadik presented at the 27C3 Chaos Communications Congress held recently in Berlin, Germany, on a topic of interest to us all: JTAG/Serial/FLASH/PCB Embedded Reverse Engineering Tools and Techniques. Check out their webpage for full documentation and analysis.
Versaloon is a full-opensource platform for multiple applications, including a programmer, debugger, logic tester, logic analyzer and simple oscilloscope. It’s based on generic USB_TO_XXX protocol, which can support more than 10 kinds of interfaces including JTAG, SWD, SPI, IIC and … Read more
The Bus Pirate can be used as an ARM JTAG debugger with OpenOCD. Joby Taffey set up the OpenOCD/Bus Pirate tool chain, and used it to work with a Stellaris LM3S9B90 (ARM Cortex-M3). Get a Bus Pirate for $30, including … Read more
Jrt posted some notes about using the Bus Pirate with OpenOCD: It does work – but it’s not slick or fast. If you want a cheap JTAG adapter for remote debugging or big flash writes, get an FTDI-2232 based one. … Read more
The Bus Pirate can program flash chips with flashrom and debug JTAG devices with OpenOCD, but it doesn’t do these things very fast. It was designed for human-speed interaction. The Bus Pirate is a good way to learn an EEPROM … Read more
The OpenOCD project accepted Michal Demin’s patch that adds Bus Pirate support to the popular open source JTAG debugging client. Read the tutorial here. Congratulations Michal!
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