STM32 to LCM-R305VN Driver HT1621

I need a compact, well-documented driver that lets an STM32 microcontroller talk smoothly to an LCM-R305VN LCD display. The exact wiring protocol is whatever the display’s data sheet prescribes; I’ll defer to you on whether that ends up being SPI, I²C, or a parallel bus, so long as it follows the vendor specifications and works reliably on an Nucleo c051c8

Scope of work
• Parse the LCM-R305VN data sheet, identify the required command set and timing, and translate this into clean, reusable C code (HAL-compatible).
• Provide a minimal demonstration project in STM32CubeIDE that brings the display to life—clearing the screen, writing characters, and refreshing without flicker.
• Supply a concise wiring guide so I can duplicate your setup on my breadboard.

Acceptance criteria
• The demo firmware builds without errors, flashes over ST-Link, and shows the required message on power-up.
• All essential display commands (init, clear, write char/string, set cursor) are wrapped in intuitive API calls.
• No unexplained magic numbers—each register setting is commented with a brief note keyed to the data sheet section.

Please keep the code lightweight (no unnecessary RTOS layers) and stick to standard HAL calls so I can port it later. If you need clarification on the board variant or clock settings, just ask and I’ll confirm.