ca4ti

Environment

The steps shown below are done on a Ubuntu VM using Qemu 3.0

$ qemu-system-arm -version
QEMU emulator version 3.0.0
Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers

To quit Qemu at any time press Ctrl+a x, i.e. Ctrl+a and then x

What happened?

Recently, I did a bit of shuffling around with my devices. My dad wanted wifi he can carry around. So I gave him the Huwaie portable router and my brother got my wall plugged 3G dongle and I was left with my trusty ol' TP-LINK-MR3020. Since I use 3G myself, I decided I would utilise the TP-LINK and so got a NETGEAR dongle without inbuilt wifi instead of a new 3g/4G dongle (cause it was cheaper and won't interfere with TP-LINK's wifi signal). Then in a hurry to get my router to work I flashed it with the upgrade firmware and something went wrong along the way and it bricked the device (3 lights blinking intermittently).

The way to prop it back to life is to to get a serial connection from the device. This involves prying open the device (voids warranty but the concept of warranty itself is mostly useless anyway).

How to?

There are two ways to go about this:

FreeRADIUS Setup

Install FreeRADIUS:

apt-get install freeradius freeradius-mysql freeradius-utils

Allow all NAS clients to connect to it:

Coova Chilli Commands

Installation

Recommended OpenWRT firmware version: OpenWRT 19. Newer versions do not have iptables installed by default so Coova Chilli will not work out of the box

opkg update
opkg install coova-chilli nano

	#!/bin/bash

	#title : tts.sh
	#description : This script will convert text to speech using Google translate API
	# and then to Asterisk formats (wav, sln, gsm)
	#
	#author : Andrius Kairiukstis <[email protected]>
	#date : 26 July 2013
	#version : 0.1
	#usage : bash tts.sh FILENAME VOICE PHRASE

	'''
	BAIXE TODOS OS ARQUIVOS NECESSÁRIOS AQUI: "https://drive.google.com/drive/folders/1FjKBlwf4PAZjI4K76uPzQ4e1d8EgQZww?usp=sharing", inclui todos os arquivos mencionados abaixo.
	--------------------------------------------------------------------------------------------------------------------------
	Antes de começarmos, vamos precisar instalar algumas bibliotecas, caso você utilize linux você nao terá erros. Contudo, se você utiliza windows, tem uma seção de soluções de erros.
	--------------------------------------------------------------------------------------------------------------------------
	pip install SpeechRecognition pyaudio
	--------------------------------------------------------------------------------------------------------------------------
	pip install pocketsphinx
	--------------------------------------------------------------------------------------------------------------------------
	Em caso de erros (Windows):

	from vosk import Model, KaldiRecognizer
	import json
	import pyttsx3
	import pyaudio
	import os

	# Verificando modelo pre-treinado
	if not os.path.exists("model-br"):
	print ("Favor verificar existencia do modelo treinado em model-br.")
	exit (1)

	#ederwander
	#date 10/02/2012
	from __future__ import division
	import math
	import wave
	import numpy as np


	freq = 0.;
	trigfact = 0.6;

	# http://www.aliexpress.com/item/New-Mini-Portable-Wireless-3G-Router-TP-LINK-TL-WR703N-150M-150Mbps-WR703N-Pocket-size-Wifi/948558329.html
	# Someone should convince TP-Link to build this with more Flash, serial headers, bare board, *duino style...

	# This is the starting point for a webradio appliance in the works
	# TODO: Preconfigure everything, hook up Arduino for IR control sending and receiving

	wget http://downloads.openwrt.org/attitude_adjustment/12.09/ar71xx/generic/OpenWrt-ImageBuilder-ar71xx_generic-for-linux-i486.tar.bz2
	tar xfj OpenWrt-ImageBuilder*
	cd "$HOME/Downloads/OpenWrt-ImageBuilder-ar71xx_generic-for-linux-i486"

	Requirements:
	Winbond W25Q128FV (or other compatible chip, see pepe2k's uboot readme)
	SPI Programmer (ie a Revelprog IS)
	Serial Console (ie a CP2102)
	HEX editor (ie Bless)
	32bit vm to compile pepe2k's uboot
	tftp server

	Note: I already had pepe2k's uboot + LEDE r930 flashed on the original 4MiB flash chip. I assume I made a mistake with the data partition due to already having pepe2k's uboot installed. More is explained later on.