This is a step-by-step tutorial to test Tron App code on Ledger Hardware Wallet. It is based on Ledger Nano S - but should also work for other hardware wallets such as Nano X

Prerequisites

You need to have hardware wallets (at least one).

1. https://shop.ledger.com/pages/ledger-nano-x
2. https://shop.ledger.com/products/ledger-nano-s

Fork and clone https://github.com/LedgerHQ/app-tron

Development OS

We can develop using Windows, MAC or Linux. But Linux (Ubuntu) is preferred. Virtual Machine is a good idea such as VirtualBox

Download Ubuntu: https://ubuntu.com/download/desktop

Fork and Compile

1. git clone https://github.com/LedgerHQ/app-tron
2. Download clang (for ARM) and unzip it

wget -c "https://releases.llvm.org/9.0.0/clang+llvm-9.0.0-x86_64-linux-gnu-ubuntu-18.04.tar.xz"

1. unzip it via

tar -xvf "clang+llvm-9.0.0-x86_64-linux-gnu-ubuntu-18.04.tar.xz"

1. Download prebuilt gcc

wget -c "https://developer.arm.com/-/media/Files/downloads/gnu-rm/10-2020q4/gcc-arm-none-eabi-10-2020-q4-major-x86_64-linux.tar.bz2?revision=ca0cbf9c-9de2-491c-ac48-898b5bbc0443&la=en&hash=68760A8AE66026BCF99F05AC017A6A50C6FD832A"

1. Unzip it

tar -xvjf "the tar.bz2 file you downloaded in step 4"

1. rename both folders

mv clang+llvm-9.0.0-x86_64-linux-gnu-ubuntu-18.04 clang-arm-fropi
mv gcc-arm-none-eabi-10-2020-q4-major gcc-arm-none-eabi-5_3-2016q1

Setting up the SDK

Now that you have your toolchain set up, you need to download / clone the SDK for the appropriate Ledger device you’re working with. Make sure you checkout the tag matching your firmware version.

1. Ledger Nano S SDK: https://github.com/LedgerHQ/nanos-secure-sdk
2. Ledger Nano X SDK: https://github.com/LedgerHQ/nanox-secure-sdk
3. Ledger Blue SDK: https://github.com/LedgerHQ/blue-secure-sdk

Finally, link the environment variable BOLOS_SDK to the SDK you downloaded.

export BOLOS_SDK='/path/to/sdk'
//for example, /home/justyy/tron/nanos-secure-sdk

Also,

export BOLOS_ENV='/path/to/your/workspace'
//this is one directory up where you cloned app-tron

Install Dependency

sudo apt install libncurses5
sudo pip3 install ledgerblue
sudo pip install ledgerblue

Change python to python3 in Makefile

Make some code changes

For example, let's modify the text at src/main.c

Run make load to compile your latest changes:

"No dongle found" means that you need to plugin the Ledger Wallet.

Testing

Allow Unsafe Manager

Confirm Action

Loading

Install App Tron

Perform Action

And it works!

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Thank you for reading ^^^^^^^^^^^^^^^

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