KXKM - ESP32 Audio & battery module firmware V3 for STM32F070F6

This repo is a platformIO code to V3 kxkm

This repository contains submodules.

Git expects us to explicitly ask it to download the submodule's content. If you're cloning this repository for the first time, you can use a modified clone command to ensure you download everything, including any submodules:

git clone --recursive <url>

If you already cloned the repository you have to run

git submodule update --init --recursive

In order to update the repository submodules content, you can execute the following command regularly:

git submodule update --recursive

ESP32 installation

Execute hardware/espressif/esp32/tools/get.py

STM32 Flashing Using JLink

needed the jlink software : https://www.segger.com/downloads/jlink/

• Keep the push button pressed to supply power while the MCU is being reprogrammed
• Slide the battery type selector to "Custom" position

STM32 calibrating ADC value and store in option byte to accurate reading battery voltage

1 - upload VS-STM32-ADC-calib

2 - power the board with 24V power to calibrate ADC 4 - reset board and read serial ouptut :

3 - connect serial with TX/RX reversed to read serial from the STM32 and not from the ESP

When: -- STORED -- as printed, the adc are calibrated and stored in option byte

STM32 coprocessor - battery monitoring function

change board ID before upload VS_STM32-KXKM-Battery_monitoring