Interfacing BMP280 with STM32L476 Microcontroller: A Beginner's Guide
The BMP280 is a genuine barometric pressure sensor that can communicate with a microcontroller via SPI or I2C. In the following project, STM32l476 and BMP280 communicate through I2C to obtain temperature measurements from the BMP Sensor. The STM32CubeIDE and STM32CubeMX ecosystems are used to develop firmware on the host controller.
For More details on BMP280 and STM32l476 refer to the datasheets. All the links are provided in the reference at the bottom of the page.
Hardware Setups
Board Details:
- BMP280 Sensor Module
- Nucleo-L476RG Board
Pin Connections:
Project Setup in CUBEMX:
The project setup is done in STMCubeMX, STM provides Graphical software to set up a project which provides the startup code with all the peripheral's initialization parameters. As shown in the below image following peripherals are Initialized in the project USART and GPIOs are used for debugging purposes.
Firmware Design
FlowChart:
- The Github link is provided at the bottom of the page please refer to it for the firmware.
Outputs:
Important Links:
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