Hello,
Is there an open source project to design a JTAG probe using the FT232H chip from FTDI ?
I’d like to create a small, 3.3V only (maybe 3.0V too, not sure), very simple JTAG adapter based on this chip, it seems OpenOCD already has support for the chip itself, but does it make use of the MPSSE or is it still bit banging (didn’t find clear information on that)?
The goal would be to have a secondary dev platform on linux - with open source toolchain - with this cheap homemade JTAG probe for field development (I already have a desktop PC with an ST Link and TASKING for ARM toolchain), or for small projects.
I’m also not using the standard JTAG connector on my projects (too big), that’s why I’d prefer to design the PCB myself (not mandatory …).
One of the goals is to create a kind of breakout board for STM32F205 (which I already work with, and it’s awesome), with easily pluggable, small JTAG probe (kind of mBed but with “classic” dev tools).
Regards,
Thomas.
[Edit] The bus blaster V2 seems a good basis, removing the CPLD and secondary MPSSE (going from FT2232H to FT232H).