LunaSys is the firmware/systems component of the Luna project. LunaSys uses the STM32F4 HAL and LL drivers to connect a VGA camera module (OV7670) and a 16x2 LCD display to the STM32F446RE NUCLEO-64 MCU. LunaSys is intended to interoperate with LunaUI, a custom platform-agnostic user interface solution built using Qt6 to display captured images and video from the camera module, and to collect logging information from the hardware via UART (using RS232).

All relevant user code can be found in the Core directory. See the Docs directory for LunaSys-relevant peripheral summaries, image resources, and architecture diagrams.

See UM2609 user guide for the STM32CubeIDE.

Refer to Section 36 (STM32F446xx devices bootloader) and Table 2 (Bootloader activation patterns) under Section 4 (General bootloader description) of the AN2606 application note for more information on the board-specific bootloader.

The build instructions (soon to come) are for flashing to a DFU connected board.

Table 1 shows the project's I/O register map. Note that these pin assignments are specific to STM32F446xC/E boards.

Table 1: Luna Project Register Map, STM32F446RE NUCLEO-64

• Complete and tested camera module configuration
• UART Tx and Rx callbacks, DCMI frame event callback (logging + error handling), GPIO_EXTI callback
• Configuring DMA for USART2_TX
• Application initializations in main