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Windows Build Instructions and Notes

Tested on Windows 10 Pro Version 1803 This guide is distilled from the official ESP-IDF Guide. If you run into issues or are curious on the reason behind some of these commands, first check their documentation

Setup Toolchain

Download the windows all-in-one toolchain and unzip the contents to C:\

Install Espressif IoT Development Framework

Double click C:\msys32\mingw32.exe and run the command

mkdir -p ~/esp

All of our ESP32 project code will go into this folder.

mingw32.exe will be referred to as the terminal in this guide

Download the Espressif IoT Development Framework:

cd ~/esp
git clone --recursive https://github.com/espressif/esp-idf.git
cd esp-idf
git checkout 8c307a57
git submodule update --init --recursive

We checkout a specific commit (ignore any responded warnings) because recent esp-idf broke some stuff. This will be fixed later. With a text editor, create the file

C:/msys32/etc/profile.d/export_idf_path.sh

with contents

export IDF_PATH="C:/msys32/home/user-name/esp/esp-idf"

where user-name is your windows username.

Close the terminal and open it again. Verify IDF_PATH is set:

printenv IDF_PATH

Install cmake

Enter the following command into terminal:

pacman -S mingw-w64-i686-cmake

Install Jolt Wallet

Now its time to clone the Jolt Wallet repo. Type the following commands into the terminal.

cd ~/esp
git clone --recursive https://github.com/joltwallet/jolt_wallet.git

Establishing Connection and Configuration

Connect your development board to your computer. Most boards use either a FTDI or a C210x USB to UART chip. Download and install the appropriate driver for your board. The Heltec WiFi_Kit_32 uses the C210x chip.

After installing the drivers, we need to find the port your device is connected to. Write click the windows icon on the bottom left of your screen, and select "Device Manager". Under "Ports" you should see something along the lines of

Silicon Labs CP210x USB to UART Bridge (COM3)

In my case, the port is COM3.

Before we can configure the port, we first need to copy over some basic configs. If you are using a Heltec WiFi_Kit_32 with the suggested hardware setup, the sdkconfig.heltec_dev file in sdkconfigs is a pretty good start. Copy it to the base directory:

cd ~/esp/jolt_wallet
cp sdkconfigs/sdkconfig.heltec_dev sdkconfig

To set the port, open up the configuration utility:

make menuconfig

Then select Serial flasher config. Change the Default serial port to your serial port; in this example its COM3.

Flash to Device

To build the firmware and flash your device, run

make flash monitor

from within the jolt_wallet folder.