https://github.com/wassimhedfi/can_protocol_stm32f446re_v_stm32f407g

This project implements two-way communication between STM32F446RE and STM32F407G microcontrollers using the CAN protocol.
https://github.com/wassimhedfi/can_protocol_stm32f446re_v_stm32f407g

can-bus can-communication can-protocol stm32 stm32f407g-discovery stm32f446re

Last synced: 18 days ago
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This project implements two-way communication between STM32F446RE and STM32F407G microcontrollers using the CAN protocol.

• Host: GitHub
• URL: https://github.com/wassimhedfi/can_protocol_stm32f446re_v_stm32f407g
• Owner: WassimHedfi
• Created: 2024-11-18T20:13:12.000Z (about 1 month ago)
• Default Branch: master
• Last Pushed: 2024-11-19T16:44:42.000Z (about 1 month ago)
• Last Synced: 2024-11-19T17:44:17.948Z (about 1 month ago)
• Topics: can-bus, can-communication, can-protocol, stm32, stm32f407g-discovery, stm32f446re
• Language: C
• Homepage:
• Size: 7.95 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# CAN Bus Communication Between STM32F407G and STM32F446RE Boards

This project demonstrates **CAN bus communication** between two STM32 microcontroller boards, using a CAN basic transceiver to enable reliable data exchange. The STM32F407G Discovery board reads analog values from a potentiometer, transmits the data via CAN, and the STM32F446RE board monitors the received data to activate an LED based on a threshold.

---

## Overview

The project highlights the practical use of the **Controller Area Network (CAN)** protocol for real-time data exchange between microcontrollers. It involves:

1. **Reading analog values from a potentiometer** on the STM32F407G Discovery board.

2. **Transmitting these values via CAN** to the STM32F446RE board every 100 ms.

3. **Monitoring received data** on the STM32F446RE board and activating an LED if a threshold is exceeded.

---

## Repository Structure

The repository contains two separate folders, each representing the project for one of the STM32 boards. These folders can be directly opened and modified in **STM32CubeIDE**:

- **`CAN_Sender`**: Contains the project for the **STM32F407G Discovery Board**, which reads the potentiometer values and transmits them over CAN.

- **`CAN_Receiver`**: Contains the project for the **STM32F446RE Nucleo Board**, which receives the CAN messages and controls the LED based on the received values.

Each folder includes:

- CubeIDE project files (`.project`, `.cproject`, etc.)

- Source code (`Src/`, `Inc/`)

- STM32CubeMX configuration files (`.ioc`)

---

## Features

- **CAN Communication:** Configured CAN peripherals on both boards using STM32CubeMX for robust communication.

- **Analog Input Monitoring:** Reads potentiometer values with an 8-bit resolution from the STM32F407G board.

- **Threshold-Based LED Control:** Activates an LED on the STM32F446RE board when the received value surpasses a predefined threshold.

- **Periodic Updates:** Transmits data every 100 ms, ensuring consistent communication.

---

## Hardware Requirements

- **STM32F407G Discovery Board**

- **STM32F446RE Nucleo Board**

- **CAN Transceiver Modules** (e.g., MCP2551 or SN65HVD230)

- **Potentiometer**

- **LED and Resistor**

- **Breadboard and Jumper Wires**

---

## Software Requirements

- [STM32CubeMX](https://www.st.com/content/st_com/en/stm32cubemx.html)

- [STM32CubeIDE](https://www.st.com/content/st_com/en/stm32cubeide.html)

---

## Implementation Details

### 1. **STM32F407G Discovery Board (Transmitter):**

   - Configured the **ADC** to read analog values from a potentiometer with 8-bit resolution.

   - Set up the **CAN peripheral** to transmit messages every 100 ms.

   - CAN message structure:

     - **ID:** Fixed identifier for this board.

     - **Data:** Single byte representing the potentiometer value.

### 2. **STM32F446RE Nucleo Board (Receiver):**

   - Configured the **CAN peripheral** to receive messages and process data using interrupts.

   - Monitors the received potentiometer value:

     - If the value exceeds a predefined threshold, activates an LED.

     - Otherwise, keeps the LED off.

### 3. **CAN Peripheral Configuration:**

   - **Baud Rate:** 500 kbps.

   - **Filters:** Configured to accept messages from the transmitter's identifier.

   - **Interrupts:** Used for efficient message reception and handling.

### 4. **Communication Setup:**

   - Connected CAN transceivers between the boards:

     - CAN High (CANH) and CAN Low (CANL) lines.

   - Ensured proper termination resistors (120 Ω) at both ends of the CAN bus.

---

## Usage

1. **Clone the Repository:**

   ```bash

   git https://github.com/WassimHedfi/CAN_Protocol_STM32f446re_V_STM32f407G.git

   cd CAN_Protocol_STM32f446re_V_STM32f407G