I currently use a pair of Stellaris ICDI JTAG devices for programming and debugging ARM devices. I have no real problem with the download speed, but single stepping is far too slow. If I'm single stepping through C code in Visual Studio on the PC, it steps from line to line pretty much instantly. With the ARM and JTAG, each steps takes about a second. That doesn't sound too bad, but I single step through pretty much every line of my code. That makes it pretty awful to use
I'm not sure if the debug speed issue here is the Stellaris JTAG device (which uses the FTDI serial chip), or JTAG in general. I don't want to just buy something without hearing from others who have used it.
Any suggestions for a JTAG device which can single step quickly? Ideally, quick stepping means it moves from line to line as fast as I click the mouse. Also, if it can get into and out of debug mode quickly, that would also be a plus.
Please sign in to leave a comment.