don

/**
 * Convert a hex string to an ArrayBuffer.
 * 
 * @param {string} hexString - hex representation of bytes
 * @return {ArrayBuffer} - The bytes in an ArrayBuffer.
 */
function hexStringToArrayBuffer(hexString) {
    // remove the leading 0x
    hexString = hexString.replace(/^0x/, '');
    

don

// Sends a NDEF Message to a Peer
// Requires SPI. Tested with Seeed Studio NFC Shield v2

#include "SPI.h"
#include "PN532_SPI.h"
#include "snep.h"
#include "NdefMessage.h"

#define TEXT_SIZE 226
#define LANGUAGE_ENCODING_SIZE 3

don

// Mock BLE so you can run example from nodejs
const ble = {
    write: function(device_id, service, characteristic, buffer, success, failure) {
        // log to console instead of writing
        console.log('>>', new Uint8Array(buffer));
        // always call success callback
        success();
    }
}

don

Keybase proof

I hereby claim:

• I am don on github.
• I am doncoleman (https://keybase.io/doncoleman) on keybase.
• I have a public key ASAHcDKLEfyv4tJbdZ2G6eO7Zk1RB8L0EUeiC8hBtIaEPQo

To claim this, I am signing this object:

don

location / {
    proxy_set_header X-Forwarded-Host $host:$server_port;
    proxy_set_header X-Forwarded-Server $host;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_pass http://localhost:8000/;
}

don

# get git branch info using old bash function
# the zsh way to do this is vsc_info
function parse_git_branch {
  git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/(\1)/'
}

# add git branch version to prompt
setopt PROMPT_SUBST
PROMPT='%n@%m %1~$(parse_git_branch) %# '

don

//
// Write "Hello, world!" in a plain text NDEF message
// Tag must be a Mifare Classic with a 4 byte ID
// Tested with Samsung TecTile
//
#include <Wire.h>
#include <Adafruit_NFCShield_I2C.h>

#define IRQ   (2)
#define RESET (3)  // Not connected by default on the NFC Shield

don

// Print the WiFi firmware version and MAC address for MRK boards
// Based on https://www.arduino.cc/en/Reference/WiFiNINAMACAddress
// and https://forum.arduino.cc/index.php?topic=114568.msg862118#msg862118

#include <SPI.h>
#ifdef ARDUINO_SAMD_MKR1000
#include <WiFi101.h>
#define WIFI_LIB "WiFi101"
#else
#include <WiFiNINA.h>

don

var app = {
    initialize: function() {
        document.addEventListener('deviceready', this.onDeviceReady.bind(this), false);
    },

    onDeviceReady: function() {
        // Auto connect whenever the device is in range
        const MAC_ADDRESS = 'E4:86:1E:4E:5A:FB';
        ble.autoConnect(MAC_ADDRESS, app.onConnected, app.onDisconnected);
    },

don

#!/usr/bin/perl -w

# Run this from the Arduino library directory to generate keywords.txt
# Optionally pass the name of the library as the first argument

# $ gen_keywords.pl Foo > keywords.txt

use strict;

my $in_public = 0;