JTAG Blaster/atmega2560

Projects Networking, Protocols, and Devices
1

Hello,

I wonder if its possible to use USB Blaster probe with ATMEGA2560 to learn JTAG please ?

If i connect a led on gpio on my atmega2560 (arduino mega) it's possible to change state of this GPIO with USB Blaster and a free software like TopJtag ?

Thanks
Max

2

USB Blaster is more commonly used with FPGAs and CPLDs. JTAG debugging on AVR microcontrollers with a USB Blaster may require extra configuration or custom scripts. Use a dedicated AVR JTAG debugger like the Atmel-ICE. https://www.microchipdirect.com/product/ATATMEL-ICE?srsltid=AfmBOorLUAufFSbIaXN8HYl6BUEGeOSUirIvKnqsbn5ucHc6iRhVAU4B
You can also consider using a JTAG interface using the FT2232H IC:
JTAG with a F2232H IC chip. including digitial isolators. - Share Project - PCBWay

3

Thanks for your reponse :slight_smile:

Uch Atmel-ICE its too expensive...

So, i will try to find FTDI probe...

Thank you

4

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