From c2742cde3d034b2af9bbcee90765338ee094e6cc Mon Sep 17 00:00:00 2001
From: "Matthias P. Braendli" <matthias.braendli@mpb.li>
Date: Wed, 3 Jan 2024 21:57:27 +0100
Subject: Add src/radio and freq config

---
 src/main.rs | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 61 insertions(+), 3 deletions(-)

(limited to 'src/main.rs')

diff --git a/src/main.rs b/src/main.rs
index 20fedf6..9a4ae2b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,11 @@
+use anyhow::Context;
+use log::{debug, info, warn, error};
 use std::sync::{Arc, Mutex};
+use tokio::sync::mpsc;
 use sqlx::{Connection, SqliteConnection};
+use radio::{RadioManager, MAX_PACKET_LEN};
 
+mod radio;
 mod config;
 mod ui;
 
@@ -13,8 +18,7 @@ type SharedState = Arc<Mutex<AppState>>;
 
 #[tokio::main]
 async fn main() -> std::io::Result<()> {
-
-    // simple_logger::
+    simple_logger::SimpleLogger::new().env().init().unwrap();
 
     let mut conn = SqliteConnection::connect("sqlite:cats-radio-node.db").await.unwrap();
     sqlx::migrate!()
@@ -24,12 +28,66 @@ async fn main() -> std::io::Result<()> {
 
     let conf = config::Config::load().expect("Could not load config");
 
+    if conf.freq == 0 {
+        warn!("Frequency {0} is zero, disabling radio", conf.freq);
+    }
+    else if !(430000..=436380).contains(&conf.freq) {
+        error!("Frequency {} kHz out of range (430MHz - 436.375MHz), skipping radio setup", conf.freq);
+    }
+    else {
+        info!("Setting up radio");
+        let (packet_tx, mut packet_receive) = mpsc::channel(16);
+        let (packet_send, packet_rx) = mpsc::channel(16);
+        let mut radio = RadioManager::new(packet_tx, packet_rx).expect("Could not initialize radio");
+
+        let channel = ((conf.freq - 430000) / 25) as u8;
+        radio.set_channel(channel);
+        let actual_freq = 430000 + 25 * channel as u32;
+        info!("Setting up radio on {actual_freq} kHz...");
+
+        tokio::task::spawn(async move {
+            loop {
+                if let Err(e) = radio.process_forever().await {
+                    error!("Radio error: {e}")
+                }
+            }
+        });
+
+        tokio::task::spawn(async move {
+            loop {
+                match packet_receive
+                    .recv()
+                    .await
+                    .context("Packet receive channel died") {
+                        Ok((packet, rssi)) => {
+                            debug!("RX RSSI {} len {}", rssi, packet.len());
+                            let mut buf = [0; MAX_PACKET_LEN];
+                            match ham_cats::packet::Packet::fully_decode(&packet, &mut buf) {
+                                Ok(packet) => {
+                                    if let Some(ident) = packet.identification() {
+                                        debug!(" From {}-{}", ident.callsign, ident.ssid);
+                                    }
+                                    // TODO save to db
+                                }
+                                Err(e) => {
+                                    warn!("Failed to decode packet: {}", e);
+                                }
+                            }
+                        },
+                        Err(e) => warn!("Failed to decode packet: {}", e),
+                    }
+            }
+        });
+    }
+
     let shared_state = Arc::new(Mutex::new(AppState {
         conf,
         db: Mutex::new(conn)
     }));
 
-    ui::serve(3000, shared_state).await;
+    let port = 3000;
+    info!("Setting up listener on port {port}");
+    ui::serve(port, shared_state).await;
     Ok(())
 }
 
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