cr1901

 from migen.fhdl.std import *
from migen.genlib.fifo import AsyncFIFO
from migen.fhdl.bitcontainer import flen
from migen.bank.description import *


class FreqCounterDebug(Module, AutoCSR):
    def __init__(self, counter_param_list):
        for params in counter_param_list:
            setattr(self.submodules, params[0], FreqCounter(*params[1:]))

cr1901

from migen import *
from migen.fhdl import verilog
import numpy as np
import matplotlib.pyplot as plt
import struct

class NCO(Module):
    def __init__(self, out_width=8, depth=10, acc_out_width=24, base_freq=1000000, clk_freq=50000000):
        self.norm_freq = base_freq/clk_freq
        num_entries = 2**depth

cr1901

SolvespaceCamera = function( render_width, render_height, scale, up, right, offset ) {
    THREE.Camera.call( this );

    this.type = 'SolvespaceCamera';

    this.render_width = render_width;
    this.render_height = render_height;
    this.zoom_scale = scale; /* Avoid namespace collision w/ THREE.Object.scale */
    this.up = up;
    this.right = right;

cr1901

SolvespaceCamera.prototype.updateProjectionMatrix = function() {
    temp = new THREE.Matrix4();
    offset = new THREE.Matrix4().makeTranslation(this.offset.x, this.offset.y, this.offset.z);
    n = new THREE.Vector3().crossVectors(this.right, this.up);
    rotate = new THREE.Matrix4().makeBasis(this.right, this.up, n);
    /* TODO: If we want perspective, we need an additional matrix
    here which will modify w for perspective divide. */
    scale = new THREE.Matrix4().makeScale(2*this.zoom_scale, 2*this.zoom_scale, this.zoom_scale);

    /* FIXME: Where did the negative sign in the zScale come from?

cr1901

// TODO: Why doesn't try! work?
let mut fp = match File::open(obj) {
  io::Result::File(x) => { x },
  io::Result::Error(x) => { panic!("Error opening {}: {}", obj, x) }
};

/* src\main.rs:62:17: 62:36 error: no associated item named `File` found for type `core::result::Result<_, std::io::error::Error>` in the current scope
src\main.rs:62                 io::Result::File(x) => { x },
                               ^~~~~~~~~~~~~~~~~~~
src\main.rs:63:17: 63:37 error: no associated item named `Error` found for type `core::result::Result<_, std::io::error::Error>` in the current scope

cr1901

To Fix (Bugs)

• Check that recalculating the zoom transform in fact has a relative error of 10^-15, not absolute error. If latter, rethink transform.
• Slider positions need to be updated during zoom; have not figured out a "clean" way to do this that doesn't involve signals or unnecessary inter-object communication. I may remove the event filter completely.
• Fix FitToView and ZoomToFit idempotency.
  • Related to slider-to-pixel transform having an offset of slider_width/2 pixels.
• At large zooms, the sliders start taking the wrong positions due to floating point errors?
• Remove asserts (or catch AssertionFailure) and just refuse to honor zooms at some point.
• Implement offset/magnitude visualization properly, as it seems to get stuck.
• Need to add a "max number of ticks to display" to ticker class to avoid label overlap.

cr1901

From 853153920e7f2d4b6e5bf311a57c2c3184036909 Mon Sep 17 00:00:00 2001
From: "William D. Jones" <[email protected]>
Date: Wed, 27 Jan 2016 10:49:45 -0500
Subject: [PATCH] Add test frequency counters using minispartan6 board.

---
 gateware/freq_count.py       | 55 ++++++++++++++++++++++++++++++++++++++++++++
 targets/minispartan6_base.py | 34 +++++++++++++++++++++++++++
 2 files changed, 89 insertions(+)
 create mode 100644 gateware/freq_count.py

cr1901

make BOARD=minispartan6 TARGET=base MISOC_EXTRA_CMDLINE="-sFreqSoC -Ob source True -Ob run False" gateware

cr1901

from migen.fhdl.std import *
from migen.genlib.fifo import AsyncFIFO
from migen.fhdl.bitcontainer import flen
from migen.fhdl import verilog


class FreqCounter(Module):
    # measured_sig: Signal to measure frequency
    # ref_clk: counts up to a gate_time number of cycles. It should be at least 
    # twice as fast as the maximum frequency of the measured signal to avoid

cr1901

import asyncio
import atexit
import os
import scanwidget

# First two are portable between PyQt4 and 5. Remaining are not.
from quamash import QApplication, QEventLoop, QtGui, QtCore, QtWidgets