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https://github.com/wassimhedfi/adxl345-driver-stm32
Custom driver for ADXL345 accelerometer on STM32 Nucleo-F446RE via I2C, transmitting real-time acceleration data over UART. Modular for easy adaptation to other STM32 boards.
https://github.com/wassimhedfi/adxl345-driver-stm32
accelerometer-driver adxl345 assembly c-plus-plus c-programming data-monitoring embedded-systems i2c-interface iot java stm32f446re-nucleo uart-interface
Last synced: about 4 hours ago
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Custom driver for ADXL345 accelerometer on STM32 Nucleo-F446RE via I2C, transmitting real-time acceleration data over UART. Modular for easy adaptation to other STM32 boards.
- Host: GitHub
- URL: https://github.com/wassimhedfi/adxl345-driver-stm32
- Owner: WassimHedfi
- License: mit
- Created: 2024-08-18T22:49:28.000Z (3 months ago)
- Default Branch: main
- Last Pushed: 2024-11-13T22:15:02.000Z (1 day ago)
- Last Synced: 2024-11-13T23:20:20.081Z (1 day ago)
- Topics: accelerometer-driver, adxl345, assembly, c-plus-plus, c-programming, data-monitoring, embedded-systems, i2c-interface, iot, java, stm32f446re-nucleo, uart-interface
- Language: C
- Homepage:
- Size: 1 MB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# ADXL345 Driver for STM32 Nucleo-F446RE
This repository provides a custom driver for the ADXL345 accelerometer, designed for seamless integration with the STM32 Nucleo-F446RE board. The driver is implemented as a modular set of source and header files, facilitating straightforward deployment and adaptation across various STM32 boards and microcontrollers.
## 🚀 Features
- **Efficient ADXL345 Driver 📡**:Lightweight and optimized driver for the ADXL345 accelerometer, enabling reliable I2C communication.
- **I2C Communication 🔄**: Manages setup and data exchange with the ADXL345 using the I2C protocol.
- **UART Data Transmission 📊**: Reads acceleration data (`x_acc`, `y_acc`, `z_acc`) from the ADXL345 and transmits it via UART for real-time monitoring or further processing.
- **Modular Architecture 🧩**: Organized into separate source and header files for ease of integration into different projects or STM32 microcontrollers.
## 🛠️ Getting Started
### Prerequisites
- **[STM32 Nucleo-F446RE](https://www.st.com/en/evaluation-tools/nucleo-f446re.html)**: The target microcontroller board for this project.
- **[ADXL345 Accelerometer](https://www.analog.com/media/en/technical-documentation/data-sheets/ADXL345.pdf)**: A 3-axis accelerometer with I2C communication.
- **[STM32CubeIDE](https://www.st.com/en/development-tools/stm32cubeide.html)**: Recommended IDE for development and compilation.
- **UART Interface**: For monitoring or processing the accelerometer data on a connected device.
### ⚙️ Hardware Setup
1. **Connect the ADXL345 to the STM32 Nucleo-F446RE**:
- **VCC** to **3.3V**
- **GND** to **GND**
- **SCL** to **I2C1_SCL** (Pin PB8)
- **SDA** to **I2C1_SDA** (Pin PB9)
- **INT1** and **INT2** (Optional, for interrupt-driven operation) not utilized in this scope.
2. **UART Connection**:
- **Tx** (Pin PA2) to your UART receiving device.
- **Rx** (Pin PA3) to your UART receiving device.
### 📥 Software Setup
1. **Download the [core folder](Core)** containing necessary files
2. **Open STM32CubeIDE** and setup your MXConfigurations with I2C1 at pins PB8 & PB9 and make use of USART2 on the Asynchronous mode
3. **Include driver files** in your project:
* [`ADXL345.c`](Core/Src/ADXL345.c) in the [`Src`](Core/Src) directory
* [`ADXL345.h`](Core/Inc/ADXL345.h) in the [`Inc`](Core/Inc) directory
4. **Replace or adjust** your [`main.c`](Core/Src/main.c) file as needed
5. **Build and flash** the project to the STM32 Nucleo-F446RE.
## 📂 Code Structure
- **[`ADXL345.c`](Core/Src/ADXL345.c)**: Contains implementation details for the ADXL345 driver functions.
- **[`ADXL345.h`](Core/Inc/ADXL345.h)**: Defines function prototypes and constants.
- **[`main.c`](Core/Src/main.c)**: Hosts the application code responsible for reading acceleration data and transmitting it via UART.
## ⚙️ Usage
1. **Initialize** the I2C and UART peripherals in `main.c`.
2. **Configure** the ADXL345 sensor and retrieve acceleration data using functions from `ADXL345.c`.
3. **Transmit** acceleration data over UART for real-time monitoring.
### Example Code
```c
#include "ADXL345.h"
// Initialize peripherals
MX_I2C1_Init();
MX_USART2_UART_Init();
// Initialize ADXL345
ADXL345_Init();
// Main loop
while (1) {
float x_acc, y_acc, z_acc;
// Read acceleration data
TT_GET_ACCELERATIONS();
// Send data over UART
printf("X: %f, Y: %f, Z: %f\n", x_acc, y_acc, z_acc);
HAL_Delay(500); // Adjust delay as needed
}
```
---
📌 **N.B.**
Note that the `ADXL345.c` driver file includes two functions for obtaining acceleration data: one for basic data retrieval and another, used in `main.c`, that converts the data into a string buffer, preparing it for transmission over UART.