1 unstable release
0.1.0 | Nov 27, 2020 |
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#10 in #signal-handler
13KB
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IR Remote Receiver
This crate provides a signal decoder for the commonly found 44-button infra red remote used commonly with LED strips. When an IR sensor is connected to a GPIO pin, this crate can decode the IR signals into which button was pressed.
Usage
This will read signals on GPIO 4 and print them:
use pi_ir_remote::read_ir_remote;
use pi_ir_remote::PrintSignalHandler;
fn main() {
let handler = PrintSignalHandler::new();
read_ir_remote(4, Box::new(handler));
}
You can make your own signal handler by implementing the SignalHandler trait:
pub trait SignalHandler {
fn handle_signal(&mut self, signal: &Signal);
}
How it works
The IR remote sends pulse length encoded signals. Among other special pulses, there are a short and long pulse, corresponding to 0 and 1, allowing the transmission of binary data.
Every button is associated to a 32 bit word. This library includes the mapping of binary codes to buttons in the Signal enum.
Dependencies
~1.5MB
~36K SLoC