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Serial Pi

Raspberry Pi Serial Port Usage

The serial port on the Raspberry Pi is configured as default for console input/output. This allows you to login and interact with the Raspberry Pi via the serial port but you cannot use the serial port with your programs. To use the serial port with other programs and hardware such as modems,...

Raspberry Pi 3, 4 and Zero W Serial Port Usage

The Raspberry Pi 3 Model B, B+, 4 and Raspberry Pi Zero W contain two UART controllers which can be used for serial communication, the mini UART and PL011 UART.  By default, the mini UART is mapped to the TXD (GPIO 14) and RXD (GPIO 15) on the 40 pin GPIO header and the PL011 UART is used for...

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