Avr: do you need ICE or JTAG is enough?

[hayder78]

Avr:ICE or JTAG

Hi ,

Does the Avr Jtag simple to use without tools or I have to order or build a circuit for using it or is it better to buy an Ice for it ?

Thanks in advance.

 

[sajal1975]

Re: Avr:ICE or JTAG

hi,
u may find some data at
http://www.openavr.org/

 

[Hero]

Re: Avr:ICE or JTAG

Hi,

JTAG solution is cheaper, but you need to add 10 pin male header on PCB for JTAG access port.

Also you don't have problems with parasite inductance, capaticance and noises.

 

[marie65]

Avr:ICE or JTAG

If you want to use the JTAG interface of the AVR's you have to buy a JTAGICE, or to build one. Make a search on Elektroda forums and you will find how.
But there are different capabilities in the debug process for JTAG and ICE. Using JTAG you will have only 3 hardware breakpoints, no Code profiling, no Code coverage, and Tracing is almost unusable due the slow interface. Anyway is cheap (around 40$ for the clones) or less then 10$ if you build it by yourself and is far more then "classical" debug methods. But for full debug possibilities, you should buy an ICE.