Felix Biego fbiego

Flashing BW16 AT Firmware

A simple guide to flashing the AT firmware onto BW16-Kit modules.

Factory Firmware Versions

USBC BW16-Kit: at version:release/v2.11.2 sdk version:amebad_v6.2C firmware version:release/v4.9.2
MicroUSB BW16: version:v2.4.1,amebaD v6.0a(Aug 14 2019)

An acquaintance needed a video kiosk that plays looping videos for an exposition booth. Since I have a bunch of Raspberry Pis lying around, I figured that it would be the perfect use case for using one of them.

Let's assume we start from scratch, with a unflashed, brand new SD card and your Raspberry Pi.

Installing the OS

Install a version of Raspbian that includes the desktop. You can head over to : https://www.raspberrypi.org/downloads/raspbian/ and follow the instructions.

Once the image is downloaded, you can burn it to your SD card with tools like Etcher (https://www.balena.io/etcher/)

	/**
	* This file calculates a lookup table for all the day that daylight saving take effect.
	* The output file is a hpp file, which can use used in Arduino project.
	* If you don't have nodejs on your machine, you can use an online compiler, for example: https://www.tutorialspoint.com/execute_nodejs_online.php
	*/


	// number of years in the future to generate
	const NB_OF_YEARS = 20;
	// set the current timezone

	#include <SDL.h>
	#include <cstdio>
	#include <iostream>
	#include <string>
	#include <cstring>
	#include <sstream>
	#include <ctime>

	const int MAX_RECORDING_DEVICES = 10;

	/*
	Simple Graph + Touch Drawing sample for Makerfabs ESP32-S3 4.3" 800x480 Parallel RGB565 TFT ( E32S3RGB43 )
	Product purchase link : https://bit.ly/42cuRO3
	Requirements:
	- Development board : Makerfabs ESP32-S3 4.3" 800x480 Parallel RGB565 TFT with Capacitive Touch
	- Arduino Library - Display/Touch : LovyanGFX
	- Board selected in Arduino : ESP32S3 Dev Module
	- PSRAM : OPI PSRAM
	*/

	import pytwitter
	from os import environ as env
	from dotenv import load_dotenv

	load_dotenv() # Loads the .env file we created earlier

	api = pytwitter.Api(
	consumer_key=env["CONSUMER_KEY"],
	consumer_secret=env["CONSUMER_SECRET"],
	access_token=env["OAUTH_TOKEN"],

	List with Compatible devices:

	Look under About on the watch for the device Id.
	looks something like this:

	MOY-TEH5-1.7.7

	the middle section is the interesting part, if that is in this list here
	it has the compatible bootloader and the same pinout as pinetime for Display and External Flash

	<?php

	/**
	* @author niquenen
	* @company H2V Solutions
	* @created_at 2020-02-18 10:54:10
	* @updated_by niquenen
	* @updated_at 2022-11-04 15:16:13
	*/

	Basic Manual for DaFit Fitness Tracker firmware update protocol, works for nearly any nRF52832 tracker from Company DaFit

	The minimum size of update file is 0x10000(can be filled with garbage to get to size) and the maximum size is 0x2F000
	the update will first get stored onto the external flash at position 0x3D1000 by the stock firmware(not by the bootloader)
	the size of the update will get stored at 0x3D0000 on external flash with 4 bytes uint32_t

	when bootloader gets activated it will copy the update from external flash to 0x23000 of the nRF52 internal flash.


	Connect to device,

	<?php

	function string2ByteArray($string) {
	return unpack('C*', $string);
	}

	function byteArray2String($byteArray) {
	$chars = array_map("chr", $byteArray);
	return join($chars);
	}