- [STM32WB55 boards](#stm32wb55-boards)
  - [Board](#board)
    - [Wireless stack update](#wireless-stack-update)
  - [Dongle](#dongle)
  - [BLE](#ble)
    - [GAP](#gap)
    - [GATT](#gatt)
    - [Client](#client)
# STM32WB55 boards

## Board

### Wireless stack update

- download https://github.com/STMicroelectronics/STM32CubeWB
- Use DFU mode: https://www.youtube.com/watch?v=wheGvdXsi4o @ 1min 47s
  - Jumper at
    - USB MCU
    - CN7, Pin 5&7
  - Connect with ST-Link, in STM32Programmer/Option bytes/User configuration/ set `nSWBOOT0` to true
  - Switch USB to *user USB*
  - Connect with USB
- Update FUS: https://community.st.com/s/question/0D53W00000377Nq/pnucleo-wb55-fus-error-imagenotfound
  - Select *First Install* checkbox
- Download binary, for example `stm32wb5x_Zigbee_FFD_fw.bin`

## Dongle

Just update FUS and download binary

## BLE

### GAP

GAP concepts: https://learn.adafruit.com/introduction-to-bluetooth-low-energy/gap
### GATT

GATT concepts: https://learn.adafruit.com/introduction-to-bluetooth-low-energy/gatt

### Client

[ble-client-seq.puml](ble-client-seq.puml)

## Backend

### DEBUG config

VS Code:
```json
"configurations": [
    {
        "name": "Python: Flask",
        "type": "python",
        "request": "launch",
        "module": "flask",
        "env": {
            "FLASK_APP": "backend/wsgi.py",
            "FLASK_ENV": "development",
            "FLASK_DEBUG": "0",
            "SECRET": "\\\x10#\xd9\x89,2|hBN\xe4\xdf\xe0\xf7W"
        },
        "args": [
            "run",
        ],
        "jinja": true
    }
]
```