NUCLEO ADC & Sensor Interface Suite

This repository includes embedded systems projects using the STM32 NUCLEO platform to explore analog input reading from light sensors (LDR) and digital data acquisition from a MEMS accelerometer. The projects also demonstrate efficient data handling using DMA and callback mechanisms.

Project Contents

1. ADC with LDR (Project 3a)

• Function: Reads analog values from a Light-Dependent Resistor (LDR) using the ADC.
• Purpose: To observe light intensity variations in real time.
• Learning Outcome: Basic ADC setup and data conversion from sensor input.

2. ADC with DMA + Half Complete Callback (Project 3b)

• Function: Continuously reads LDR data using DMA, triggers action halfway through the buffer.
• Purpose: Improves ADC efficiency using DMA and interrupt-driven processing.
• Learning Outcome: Using HAL_ADC_ConvHalfCpltCallback for real-time data streaming.

3. MEMS Accelerometer Projects (1b & 1c)

• Function: Reads and displays motion data from a MEMS accelerometer.
• Purpose: Tracks movement or orientation using multi-axis accelerometer data.
• Learning Outcome: SPI/I2C communication, sensor interfacing, and data display.

---

Technologies Used

• Hardware: STM32 NUCLEO board, LDR, MEMS accelerometer module
• Software: STM32CubeIDE, STM32 HAL Drivers
• Core Concepts:
  • ADC with DMA
  • Callback functions for real-time control
  • Sensor interfacing (LDR, MEMS)
  • Data visualization/logging

---

How to Run

1. Open each project folder in STM32CubeIDE.
2. Connect STM32 NUCLEO board and relevant sensors (LDR or MEMS accelerometer).
3. Flash the firmware and open a serial terminal if needed.
4. Monitor behavior:
   • Light sensitivity changes (LDR)
   • Buffer callbacks for ADC (DMA)
   • Motion readings from accelerometer