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"2024" [dependencies] +soapysdr = "0.4.1" +ferris-says = "0.3.1" +num-complex = "0.4.6" diff --git a/cellular/src/main.rs b/cellular/src/main.rs index e7a11a9..d8889cb 100644 --- a/cellular/src/main.rs +++ b/cellular/src/main.rs @@ -1,3 +1,24 @@ -fn main() { - println!("Hello, world!"); +use ferris_says::say; +use std::io::{stdout, BufWriter}; + +mod sdr; + +fn main() -> Result<(), Box> { + let stdout = stdout(); + let message = String::from("Welcome to the Cellular Revolution!"); + let width = message.chars().count(); + + let mut writer = BufWriter::new(stdout.lock()); + say(&message, width, &mut writer).unwrap(); + + // test SDR stuff + let device_args = sdr::find_device()?; + println!("Using device: {}", device_args); + + let transmitter = sdr::SdrTransmitter::new(device_args, 0)?; + + transmitter.transmit_tone(800e6, 1e6, 10e3)?; + + Ok(()) + } diff --git a/cellular/src/sdr.rs b/cellular/src/sdr.rs new file mode 100644 index 0000000..3ad4602 --- /dev/null +++ b/cellular/src/sdr.rs @@ -0,0 +1,60 @@ +use soapysdr::Direction::Tx; +use soapysdr::{Device, Args}; +use num_complex::Complex; +use std::f64::consts::PI; + +pub struct SdrTransmitter { + dev: Device, + channel: usize, +} + +impl SdrTransmitter { + // Create a new transmitter instance with specific device args + pub fn new(args: Args, channel: usize) -> Result> { + let dev = Device::new(args)?; + Ok(SdrTransmitter { dev, channel }) + } + + // Transmit a tone + pub fn transmit_tone( + &self, + frequency: f64, + sample_rate: f64, + tone_freq: f64, + ) -> Result<(), Box> { + self.dev.set_frequency(Tx, self.channel, frequency, ())?; + self.dev.set_sample_rate(Tx, self.channel, sample_rate)?; + + let samples: Vec> = (0..1000) + .map(|i| { + let t = i as f64 / sample_rate; + let phase = 2.0 * PI * tone_freq * t; + Complex::new(phase.cos() as f32, phase.sin() as f32) * 0.5 + }) + .collect(); + + let mut tx_stream = self.dev.tx_stream::>(&[self.channel])?; + tx_stream.activate(None)?; + + println!( + "Transmitting {} kHz tone at {} MHz...", + tone_freq / 1e3, + frequency / 1e6 + ); + for _ in 0..100 { + tx_stream.write(&[&samples], Some(100_000), false, 5)?; + } + + tx_stream.deactivate(None)?; + println!("Transmission complete!"); + Ok(()) + } +} + +// Helper function to create Args for a specific device +pub fn device_args(driver: &str, serial: Option<&str>) -> Args { + match serial { + Some(serial) => Args::from(&format!("driver={},serial={}", driver, serial)), + None => Args::from(&format!("driver={}", driver)), + } +} \ No newline at end of file