To use the motion sensor on the STM32F407 Discovery board over I2C, you need to follow these steps:
1. Identify the motion sensor: Find out the specific model of the motion sensor on your STM32F407 Discovery board. This information will help you locate the datasheet and understand its communication protocol.
2. Obtain the datasheet: Look for the datasheet of the motion sensor online using its model number. The datasheet will provide you with detailed information about the sensor's registers, communication protocol, and programming instructions.
3. Connect the motion sensor: Ensure that the necessary connections are made between the motion sensor and the STM32F407 Discovery board. Typically, I2C requires connecting the sensor's SDA (data line) and SCL (clock line) pins to the corresponding I2C pins on the STM32F407 board.
4. Initialize I2C: Set up the I2C peripheral on the STM32F407 Discovery board. Refer to the STM32F407 reference manual and programming examples to learn how to initialize and configure the I2C hardware.
5. Read the datasheet: Study the datasheet of the motion sensor to understand its register map, including the addresses of the relevant registers you need to access for reading sensor data.
6. Implement I2C communication: Write code to perform I2C communication with the motion sensor. This typically involves sending appropriate commands or requests to read specific registers and receiving the response from the sensor.
7. Parse sensor data: Once you receive the sensor data over I2C, you need to parse it according to the specifications provided in the datasheet. The datasheet will explain the format of the data and how to interpret it correctly.
8. Integrate with your bare metal application: Incorporate the I2C communication and data parsing code into your bare metal application for the STM32F407 Discovery board. You may need to write functions or drivers specific to the motion sensor to facilitate easier access to the sensor's data.