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Setup.md

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Enviroment tools setup

The Strato is powered by two microcontrolers of different kind.

  • STM32H7A3 is used as main application processor. It is used to gather data from the sensors and it power the user interface
  • ESP32 is used as media and conectivity co-processor. It generates the sound and provide bluetooth and wifi conectivity.

They are connected via UART, used for the primary conectivity and also SPI bus for transfering large data chunks. The main reason to use two interfaces is that with UART, both devices can start the transmittion independently, second reason is that the STM microctroller can access the ESP bootloader for the firmware update.

Thease specific microcontrollers are also used because they are well-known in opensource comunity and both platforms provide developer tools for free and with wide range of operating system in mind.

Hardware

The development can be done on the standard Strato, hovewer the much better option is to use our dev-kit avalible form our shop. It is essentialy the mainboard of the strato connected to the standard st-link and esp32-prog. This setup enables you to use the debbuger for the both microcontrollers and also give you access to the tespoint on the pcb.

Get the code

Clone the repositary from github

git clone https://github.com/fhorinek/BB.git

Setup for the STM32

  1. Download and install STM32CubeIDE
  2. Start the STM32CubeIDE, close the welcome screen and select Import projects...
  3. Select General / Projects from Folder or Archive
  4. Set cloned repository path as your Import source (eg. ~/git/BB)
  5. Select BB3 and BB3_loader
  6. Try to build both projects
  7. Remember that the st-link will only connect when the device is NOT powered off.

Setup for the ESP32

  1. Install Eclipse for ESP32 via IDF-eclipse-plugin
  2. Install Prerequisites
  3. Install IDF Plugin
  4. Install ESP-IDF
  5. Install ESP-IDF Tools
  6. Get ESP-ADF
  7. Set path to ESP-ADF
  8. Select Import projects. Select Espressif / Existing IDF Project
  9. Set Existing project Location to the ESP fw prooject path (eg. ~/git/BB/BB_esp_fw)
  10. Try to build the projects
  11. If the ADF_PATH is not definef in the CMake go to Window / Prefrences / C / C++ / Build / Enviroment Add Variabile ADF_PATH to ~/esp/esp-adf and make sure that you select Replace native enviroment with speciefied one
  12. If the build fail on /home/horinek/esp/esp-adf/components/audio_hal/driver/es7243/es7243.c go to /home/horinek/esp/esp-adf/components/audio_hal/CMakeLists.txt and remove or comment line with ./driver/es7243/es7243.c