Hi,
To continue the "USB"-related threads here, a question. I would like to use a mapple-mini clone (STM32F103) with libopencm3 to make a programmmer for the olimex ice40HX1K fpga board (*) In fact, it is actually a programmer for the winbond 2MB flash-memory. There is already an arduino sketch for this and the linux-based "flashrom" tool also works (tested it on a RPi), so it should be doable. An interesting thing is that the programming-connector on dev-board not only provides access to the flash-memory to program that chip, but also to two ports on the fpga itself. These can be used as as UART connection back between the fpga and (say) a PC. The arduino sketch only has one single serial connection, so both applications are multiplex on that one link. However, the the mapple mini-clone STM32F103 has a USB interface, and you can do ACM (serial-over-usb) in software on the STM32F1, so I was wondering if it not possible to provide two serial virtual connections on that USB link: one for the programming interface and one for the serial UART connection directly towards the FPGA. I know it is possible to define multiple services over USB, and set up multiple endpoints; but how would you configure two ACM interfaces over one single USB connection? Any ideas? Cheerio! Kr. Bonne. (*) https://www.olimex.com/Products/FPGA/iCE40/iCE40HX1K-EVB/open-source-hardware ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ libopencm3-devel mailing list libopencm3-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libopencm3-devel
