I've read a lot of post saying that TIs XDS100v2 JTAG emulator is not supported by OpenOCD. However, looking at this link, I see that the XDS100v2 is a supported FTDI chip. So I'm kind of confused on if it is or not. I do have a license for Code Composer Studio but It may not always be available so I would like to have a backup plan.
Electrical – XDS100v2 OpenOCD Support
jtagopenocdtexas instruments
Related Solutions
I have decided to go with the Bus Blaster, because it looks like the most flexible and inexpensive JTAG adaptor out there. It features a CPLD which does most of the work and can be re-programmed also.
Does this confirms if the JTAG-adapter is in sync with target?
OpenOCD would otherwise print diagnostic messages: Polling target failed [...].
How/Where to reduce the adapter and target communication speed
It is already at a low 10 kHz. You can change it in ther terminal (port 4444) or in the config file with:
adapter_khz 500
More than 500 kHz is not recommended - the MCU runs at 4 MHz by default and requires JTAG clock to be lower than CCLK/4.
Best Answer
OpenOCD ships config files for XDS100v2, so it is supported.
But you may need a different driver for OpenOCD that would prevent you from using CCS.