wtakuo

#!/usr/bin/env node
// wpa_passphrase - Generate a WPA PSK from an ASCII passphrase for a SSID
// usage: wpa_passphrase <ssid> [passphrase]

const crypto = require('crypto');

if (process.argv.length < 3 || process.argv.length > 4) {
    console.error('usage: wpa_passphrase <ssid> [passphrase]');
    process.exit(1);
}

wtakuo

#!/usr/bin/env python3
# wpa_passphrase - Generate a WPA PSK from an ASCII passphrase for a SSID
# usage: wpa_passphrase <ssid> [passphrase]

import sys
from hashlib import pbkdf2_hmac
from getpass import getpass

if len(sys.argv) < 2 or len(sys.argv) > 3:
    print("usage: wpa_passphrase <ssid> [passphrase]", file = sys.stderr)

wtakuo

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Debug",
            "type": "cppdbg",
            "request": "launch",

wtakuo

#!/usr/bin/env bash

#  
# Run this script to start UPPAAL 4.1.x.
#

# Default options if needed.
# Add -Duppaal.extra if you want to force extra features.
# JAVA_DEF="-Duppaal.extra"
#JAVA_DEF=-Duppaal.lsc

wtakuo

Jetson開発キット設定メモ

関連リンク

• https://www.nvidia.com/ja-jp/autonomous-machines/embedded-systems/jetson-xavier-nx/
• https://www.nvidia.com/ja-jp/autonomous-machines/embedded-systems/jetson-nano/
• https://developer.nvidia.com/embedded/downloads
• https://www.jetsonhacks.com

SDカード関連

wtakuo

#include <stdio.h>

#define print_size(t) printf("sizeof(%s) = %zu\n", #t, sizeof(t))

int main(void) {
    print_size(char);
    print_size(short);
    print_size(int);
    print_size(long);
    print_size(long long);

wtakuo

# Sign Extension Functions in Python
# adapted from Henry S. Warren, Jr., Hacker's Delight (2e), Ch. 2, Addison-Wesley, 2012.

# signed byte to signed int

def sb1(x):
    return ((x + 0x80) & 0xff) - 0x80

def sb2(x):
    return ((x & 0xff) ^ 0x80) - 0x80

wtakuo

#!/usr/bin/env python
'''
OpenCV WebCam Viewer
Reference: http://stackoverflow.com/questions/2601194/displaying-webcam-feed-using-opencv-and-python
'''

import cv2

def camview(name):
    cv2.namedWindow(name)

wtakuo

-- arbitrary presision e as a lazy list

main = print $ take 1000 e

e = conv (2 : [1, 1 ..])
    where
      conv (x : xs) =
          x : conv (norm 2 (0 : map (* 10) xs))
      norm c (x : y : xs) =
          if y + 9 < c then zs else carry c zs