STM32 Embedded Control UI Firmware

I have a custom board built around an STM32 MCU and I need production-ready firmware that turns it into a reliable embedded control system. The main focus is the button-based user interface: tactile switches,... (Budget: ₹12500 - ₹37500 INR, Jobs: Arduino, C Programming, Electronics, Embedded Systems, Firmware Development, I2C, Microcontroller, Software Development, STM32, Visual Studio)