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@hinzundcode
hinzundcode / README
Last active April 23, 2024 07:59
fomu litex vga
user_1 is R, G and B (VGA pins 1, 2 and 3)
user_2 is Ground
user_3 is HSYNC (VGA pin 13)
user_4 is VSYNC (VGA pin 15)
$ python workshop_vga.py --board pvt && dfu-util -D build/gateware/top.dfu
$ wishbone-tool 0x60003000 150
csr_register,gpu_x0,0x60003000,2,rw
csr_register,gpu_x1,0x60003008,2,rw
@hinzundcode
hinzundcode / cli_tokenizer.js
Created September 24, 2011 14:03
CLI Tokenizer - feels like bash
function tokenize (input) {
function Token(type, isOpenUntil) {
this.type = type;
this.value = "";
this.isOpenUntil = isOpenUntil || false;
}
var i = 0,
len = input.length,
tokens = [],
@hinzundcode
hinzundcode / libc.js
Created January 16, 2018 01:24
call execve from nodejs!
const { syscall, getAddress } = require("libsys");
const os = require("os");
if (os.endianess() != "LE")
throw "only little endian supported";
let dontGC = [];
function ref(buffer) {
dontGC.push(buffer);
return getAddress(buffer);
@hinzundcode
hinzundcode / psf_font.rs
Created July 22, 2021 15:25
psf font parser in rust
use std::fs;
use std::mem;
// https://www.win.tue.nl/~aeb/linux/kbd/font-formats-1.html
const PSF1_MAGIC: [u8;2] = [0x36, 0x04];
const PSF2_MAGIC: [u8;4] = [0x72, 0xb5, 0x4a, 0x86];
#[derive(Debug)]
enum Error {
@hinzundcode
hinzundcode / main.c
Created July 7, 2019 00:33
nrf52840 scan for ble advertisements, based on the nrf5 sdk ble_central/ble_app_hrs_c example
/**
* Copyright (c) 2014 - 2019, Nordic Semiconductor ASA
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
@hinzundcode
hinzundcode / fomu_vga.v
Last active August 20, 2020 15:59
// user_1 is R, G and B (VGA pins 1, 2 and 3)
// user_2 is Ground
// user_3 is HSYNC (VGA pin 13)
// user_4 is VSYNC (VGA pin 15)
// from https://8bitworkshop.com/v3.6.0/?file=hvsync_generator.v&platform=verilog-vga
module hvsync_generator(clk, reset, hsync, vsync, display_on, hpos, vpos);
input clk;
input reset;
@hinzundcode
hinzundcode / tls-hpkp.js
Created August 19, 2015 02:36
nodejs tls hpkp
var tls = require("tls");
var fs = require("fs");
var crypto = require("crypto");
var options = {
host: "test.dev",
port: 8888,
ca: [fs.readFileSync("cert.pem"), fs.readFileSync("cert2.pem")],
};
@hinzundcode
hinzundcode / dispatcher.rs
Last active February 18, 2020 15:51
use std::collections::HashMap;
use futures::Future;
use futures::prelude::*;
use std::pin::Pin;
use futures_timer::Delay;
use std::time::Duration;
use serde::de::DeserializeOwned;
use serde_json::{json, Value};
use serde::{Serialize, Deserialize};
@hinzundcode
hinzundcode / main.rs
Created February 5, 2020 18:31
#![allow(dead_code)]
#![allow(unused_variables)]
#![allow(unused_assignments)]
#![allow(unused_mut)]
#![allow(unused_imports)]
#![allow(unused_macros)]
#![allow(unreachable_code)]
use futures::lock::Mutex;
use futures::future::select_all;
@hinzundcode
hinzundcode / scanlines.html
Created May 16, 2019 18:57
<!DOCTYPE html>
<canvas id="canvas" style="width: 200px; height: 200px; border: 1px solid #000;" width=200 height=200></canvas>
<script type="module">
const circle = (mx, my, r) => (x, y) => Math.pow(x - mx, 2) + Math.pow(y - my, 2) < Math.pow(r, 2);
let canvas = document.getElementById("canvas");
let context = canvas.getContext("2d");
let drawables = [
{