Beginners Guide to SPI on the Raspberry Pi Pico (BMP280 Example)

This video covers the basics of the SPI communication protocol and how to use it on your Raspberry Pi Pico. We use a Visual Studio Code project to program the brand-new Raspberry Pi Pico microcontroller board in C. We created a project which uses the BMP280 temperature and pressure sensor to read values of temperature over SPI and print them to a serial monitor over a USB connection to a PC.

This video provides the fundamental background of the SPI communication protocol and explains how to correctly wire an SPI compatible device to the Pico. It explains which functions in the Pico SDK to use in order to communicate with this device. We also cover how to configure the Raspberry Pi Pico correctly, in both the CMakeLists file and the C file, in order to enable SPI communication.

As an example, the BMP280 breakout board from Adafruit is used to demonstrate writing to, and reading from, registers on a peripheral device. This video also shows you where to find the required information in your particular peripheral device’s datasheet in order to get your peripheral device functioning correctly.

The source code for this project (and a written article version coming soon!) is available here: https://learnembeddedsystems.co.uk/bmp280-and-pi-pico-over-spi

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Timestamps
00:00 Introduction
00:53 SPI Basics
02:41 Pico Wiring
03:49 SPI Protocol
05:11 Pico SDK I2C Functions
06:12 Read/Write Operations
07:02 Programming Example
13:38 Conclusion

If this video helped you, please consider leaving a like and subscribing, thank you!

To see my other videos on the Raspberry Pi Pico, check out the playlist here: https://www.youtube.com/playlist?list=PLEB5F4gTNK68IlRIJtcJ_2cW4dSdmreTw

You can find more embedded systems tutorials and projects on my website https://learnembeddedsystems.co.uk

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