This project demonstrates UART-based communication between an Arduino UNO and a Python automation framework. The Arduino firmware interfaces with an HC-SR04 ultrasonic sensor, LED, and push button, ...

Hello. In this series, I will explain how to build custom UART communication using the RP2040's powerful feature, "PIO (Programmable I/O)." Goal for this part: Create custom UART TX and RX using PIO, ...

// Enables or disables HW Flow Control function -- needs also to set CTS and/or RTS pins // UART_HW_FLOWCTRL_DISABLE = 0x0 disable hardware flow control // UART_HW_FLOWCTRL_RTS = 0x1 enable RX ...