Pi 4 Board-to-Board Communication #piday #raspberrypi @Raspberry_Pi

via Raspberry Pi Projects

In this lab, you will establish UART based communication channels between the Pi 4 and the HiFive 1 boards.

Part 0: Setup the UART connections (for TAs)
In this part, we will connect the HiFive1 and the Raspberry Pi 4 boards via two UART channels.

(Note that this step will be performed by the TAs.)

The Pi 4 has 4 UARTs and we will use two of them (uart2 and uart3). Add the following line at the end of the /boot/config.txt file to enable uart2 and uart3.

dtoverlay=uart2,115200 dtoverlay=uart3,115200

After rebooting the system, /dev/ttyAMA1 and /dev/ttyAMA2 will be created.

Read more.


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