https://github.com/tommythorn/bemicro-cv

A "hello world" style designs for the Cyclone V based $49 Arrow BeMicro CV
https://github.com/tommythorn/bemicro-cv

bemicro-cv fpga

Last synced: about 5 hours ago
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A "hello world" style designs for the Cyclone V based $49 Arrow BeMicro CV

• Host: GitHub
• URL: https://github.com/tommythorn/bemicro-cv
• Owner: tommythorn
• Created: 2013-10-21T06:34:14.000Z (about 11 years ago)
• Default Branch: master
• Last Pushed: 2014-09-02T01:47:22.000Z (over 10 years ago)
• Last Synced: 2025-01-11T16:16:15.621Z (5 days ago)
• Topics: bemicro-cv, fpga
• Language: VHDL
• Homepage:
• Size: 1.67 MB
• Stars: 10
• Watchers: 3
• Forks: 9
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

        
# BeMicro CV "Hello World" #

The BeMicro CV (originally) shipped with no design files.  We try to

compensate here with a collection of useful examples.  Note, the LED

pin assignment given in the documentation is wrong and corrected in

these designs.

## LEDs and serial communication

The first `led_and_serial` is the typical first Does-It-Work kind

of design which runs a counter on the LEDs.

This also adds a small serial (RS232) input/output engine:

 * RX is on GPIO 1, that is, J1 pin 1

 * TX is on GPIO 2, that is, J1 pin 2

 * Speed set to 115,200 bps

To use connect a USB BUB (or similar), RX to J1-1, TX to J1-2, GND to J1-12, and

ensure that it's configured for 3.3 V signaling.  Attach with a serial

console (say, `screen $TTY 115200`, where `TTY` is

`/dev/tty.usbserial-`something on MacOS and `/dev/ttyUSB0` on

Linux). If everything is working, input should be echoed back, except each

character is incremented (`'a'` -> `'b'`, etc.)

This is a silly design, but much more interesting things can be built

on top of this.

## NIOS II with support for the external DDR3 memory

The second design, `nios_ddr3`, comes curtesy of Guy Lemieux

`` and illustrates how to instantiate the

DDR3 controller and a NIOS II example.

Suggestions and contributions welcome.