🔐 TB-03F-OpenHaystack-Firmware

Openhaystack firmware for the Telink TLSR8253 MCU / TB-03F

This project is a custom firmware implementation that brings OpenHaystack support to the TLSR825x chip.

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✨ Features

• 🔄 Rotating Public Keys (NEW) Implements rotating identity keys for enhanced user privacy making it harder for thieves to spot.

• 🔋 Battery Status Reporting (NEW) Reports battery voltage over UART, complete with status flags (Low, Medium, Full, Critical)

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Installation

These instructions require linux. Although they almost can't be called instructions, since it's just cloning three repositories and unpacking the toolchain tarball to /opt:

git clone https://github.com/
wget http://shyboy.oss-cn-shenzhen.aliyuncs.com/readonly/tc32_gcc_v2.0.tar.bz2
sudo tar -xvjf　tc32_gcc_v2.0.tar.bz2　-C /opt/
export PATH=$PATH:/opt/tc32/bin

For convenience you could add the PATH export to whatever gets called on starting a new shell, so it's always available.

Further preparation

1. Generate a .keys file with FindMy/generate_keys.py with three keypairs.
2. Add the key to the firmware using your brain and patience
3. Flash the new FindMy.bin file using tb03f-pyflasher.py over an UART, for example an USB UART dongle:

python tb03f-pyflasher.py --port /dev/ttyUSB0 FindMy.bin

Retrieving the location of the module

This is explained in more detail in the FindMy repository, but boils down to running the request_reports.py script in the same directory as the .keys file generated here.