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The MM32F5330 evaluation board is equipped with a 1 MB 25Q80 SPI NOR Flash and several USART/UART instances. By dedicating UART1 (PB6) to printf debug output and USART1 RX (PA10) to the host link, the MCU can receive a binary stream from a PC and persist it to external Flash. Host Frame Format The Python host transmits the file in fixed-size se ...

The S32K148 MCU’s Low-Power UART (LPUART) peripheral can be used as the physical layer for Modbus RTU. Below is a concise walk-through of the minimal steps and a reference driver that receives variable-langth frames terminated by a newline character. Physical-layer essentials Idle level: logic high (1) Start bit: logic low (0) Data bits: 8 (LS ...

The HD44780 controller governs standard character LCD modules like the 1602. Proper initialization requires issuing specific function commadns in a precise sequence and timing, respecting data bus width, display geometry, and internal state transitions. Core HD44780 Command Summary Function RS R/W DB7–DB0 Timing Notes Clear Display 0 0 0 ...

This document details a method for capturing and processing waveforms from two digital quadrature encoders using the STM32F407ZGT6 microcontroller. The approach leverages the four input capture channels of Timer 5 (TIM5) to track the rotational position and direction of each encoder. System Overview The system utilizes the STM32F407's Cortex-M4 ...

This button scanning routine is designed to manage a power-saving feature: a long press of the button triggers a shutdown of all MCU peripherals (simulated by turning off an LED), but the actual sleep mode is only entered after the button is released. This prevents accidental wake-ups by ensuring the user intentional completes the press-and-rel ...

The internal flash memory integrated into STM32 microcontrollers provides non-volatile storage for both executable code and user data. While reading from this memory is as straightforward as dereferencing a pointer, modifying its contents requires strict adherence to hardware protection mechanisms. Write and erase cycles must be guarded by unlo ...