LeoDJ

# pip3 install pycryptodome

# Encryption for the "http://carmin-backend.appspot.com/rs" URL paths

import base64
from Crypto.Cipher import AES
from Crypto.Util.Padding import pad, unpad

class CarminURLEncryptor:
    def __init__(self):

LeoDJ

<?xml version="1.0" encoding="UTF-16"?>
<Task version="1.2" xmlns="http://schemas.microsoft.com/windows/2004/02/mit/task">
  <RegistrationInfo>
    <Date>2024-05-13T03:03:36.8710082</Date>
    <Author>LEO-FW16\LeoDJ</Author>
    <URI>\ModernStandbyWorkaround</URI>
  </RegistrationInfo>
  <Triggers>
    <EventTrigger>
      <Enabled>true</Enabled>

LeoDJ

# ESPHome Configuration for Tuya Smart Life RGBW Controller (AP-Future) by LeoDJ
# https://s.click.aliexpress.com/e/_De97s2j
# Implemented using ESPHome package feature, for semi-easy configuration of multiple devices

packages:
  common: !include common/tuya-ap-future-rgbw.yaml
substitutions:
  node_name: "rgbw-example-device"
  node_friendly_name: "RGBW Example Device"
  api_key: !secret generic_api_key

LeoDJ

# Control a Partner Tech SP-850 cash drawer
# Needs root

import portio
import time

# request permission to I/O port range
portio.ioperm(0x5a8, 4, 1)

# Has to be 32bit access, otherwise the EC won't respond

LeoDJ

This is more of a note to myself / a try to give the problem a bit more SEO visibility, so please excuse the probably weird writing style and structure.

tl;dr at the bottom

• .PL extension is for "PrinterLeaf" files
  • They start with the magic bytes D0 4F 50 53 (ÐOPS)
  • Commonly contain header strings like:
    For: / Printed on: / From book: / Document: / Last saved on:
Name: / Ausgedruckt: / Aus dem Buch: / Dokument: / Zuletzt gespeichert:
• And for my test file they contained references to font files like:

LeoDJ

volume_down:
  alias: Volume Down
  description: Volume Down with user defined step size
  fields:
    entity_id:
      selector:
        entity:
          domain: media_player
    step:
      default: 0.05

LeoDJ

// Quick way to print a hexdump of a buffer. Output will look like this:
//
//        0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
// 0000  54 68 69 73 20 69 73 20 61 20 74 65 73 74 20 68   This is  a test h
// 0010  65 78 64 75 6D 70 21 20 46 6F 6F 2E 20 01 02 03   exdump!  Foo. ...
// 0020  04                                                .

inline void printHexdumpAscii(uint16_t index, uint8_t byte) {
    if (index % 16 == 8) {           // some spacing for orientation
        printf(" ");

LeoDJ

// convert raw data to integer
function getVar(inputBytes, offset, varLen, isSigned = false) {
  let outVal = 0;
  for (let i = 0; i < varLen; i++) {
    outVal |= inputBytes[offset + i] << i * 8;
  }
  
  if (isSigned) { // parse as signed value
    if (inputBytes[offset + varLen - 1] & 0x80) { // sign bit is set
      outVal = ~(outVal) + 1; // calculate two's complement

LeoDJ

#!/usr/bin/env python3

# Convert XPV/XDV files to binary (CSR Blueflash / Bluecore firmware files)
# Quickly hacked together by LeoDJ

import sys
import os

def xpv2bin(input_file, output_file):
    with open(input_file) as f_in, open(output_file, "wb") as f_out:

LeoDJ

esphome:
  name: cm1106_sensor
  platform: ESP32
  board: wemos_d1_mini32
  includes:
    - "cm1106.h"

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_pass