On Wed, 5 Mar 2025 15:24:53 +0100 Johan Hovold <johan@xxxxxxxxxx> wrote: > On Mon, Feb 03, 2025 at 04:48:22PM +0800, Boon Khai Ng wrote: > > The Altera on board USB Blaster 3 utilizes a FT2232 and FT4232 > > chip. > > I assume it's either an FT2243 or an FT4232 and not both? > > > Add VID/PID for the on board USB Blaster 3 so it can be used > > as a serial device via ftdi_sio. > > Can you say something more about these devices? I guess they are used > for programming FPGAs? Are they embedded in other products? And can the > same PID be used for more than one type of device that they are embedded > in? Also, is there any actual software that can use them through this driver? The Altera 'quartus' software that is usually used to program (etc) the fpga is pretty proprietary. I think some bits have been reverse engineered, but only for a few simple actions. I'm not even sure the Altera code even loads a driver - just uses the userspace USB library. I'll have used it on a system with a custom kernel to program (etc) a CycloneV. No hint of needing to recompile a driver. (The sheer amount of software you need to command-line program a device is stunning! - I had to parcel it all up so we could use a usb to jtag cable to in-situ program one of the smaller PLD devices on a small board.) So what is the real 'use case'? David > > Or are the PIDs tied to different types of "USB Blaster 3"s? If so this, > should also be reflected in the naming of the defines.
