I2C comms

Testing I2C on the latest revision of QSP32 Solar Boost

I2C comms

Two devices, the LCD shown above and a trio of sensors in one package, are communicating over the I2C bus at the same time. I captured the SDA (data, red) and SCL (clock, yellow) clock signals while both devices were running.

I2C signal -SCL (yellow), SDA (red)- from an LCD and pressure, temperature, and humidity sensors.

For fun, I used a Saleae logic analyzer to poke at this signal. We can see the address of the sensor 0x76 and an 8 second delay that I programmed into the sketch. Unsurprisingly, the logic analyzer correctly recognizes these signals as I2C!

I2C signal capture with logic analyzer

I successfully validated the I2C communication on a Quilter-designed board, confirming proper functionality with two devices connected to the bus.

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