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riscv_usb
Krzysztof Skrzynecki 57c763b0d1 switch out gpio to pmod leds for faster speed hace 3 días
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data 57c763b0d1 switch out gpio to pmod leds for faster speed hace 3 días
fw a2c378ca17 fix regs in fw, remove race condition from buttons, type fixes hace 4 días
rtl 57c763b0d1 switch out gpio to pmod leds for faster speed hace 3 días
sim f560755b26 projects/riscv_usb: Add support for the user button hace 5 años
Makefile e7d97021d3 Add custom own timer. Working timer and printing values. Working keyboard. hace 3 semanas
README.md fd6a09e0c2 projects/riscv_usb: Fixup the README hace 1 año

README.md

RISC-V + USB core demo

For the icebreaker, the hardware connections are :

  • P1B4: USB DP
  • P1B3: USB DN
  • P1B2: Pull up. Resistor of 1.5 kOhm to USB DP

To run :

  • Build and flash the bitstream

    • This will build fw/boot.hex and include it as the BRAM initial data

  • Flash the main application code in SPI at offset 1M

    • make -C fw prog

  • Connect to the iCEBreaker uart console (ttyUSB1) with a 1M baudrate

    • and then at the Command> prompt, press c for 'connect'. This will start the USB detection and device should enumerate