2021-05-19, 04:13 PM
As @Cari20 mentioned:
And then RXD signal of this interface is connected to the GPIO used by this new gpio app, while TXD signal is connectd to a TX pin of RPI's UART port, so the data can be sent to the interface.
There is indeed additional hardware involved.
Quote:...
First, a little about the hardware:
I used the bidirectional interface published by Thomas Knauf:
http://www.thomasknauf.de/rap/seatalk3
...
And then RXD signal of this interface is connected to the GPIO used by this new gpio app, while TXD signal is connectd to a TX pin of RPI's UART port, so the data can be sent to the interface.
There is indeed additional hardware involved.