sensor sweep tester

rust/src/hal/v4_hal.rs

@@ -201,8 +201,8 @@ pub(crate) async fn create_v4(
             log::info!("Can bus mode ");
             let twai_config = Some(twai::TwaiConfiguration::new(
                 peripherals.twai,
-                peripherals.gpio0,
                 peripherals.gpio2,
+                peripherals.gpio0,
                 TWAI_BAUDRATE,
                 TwaiMode::Normal,
             ));
@@ -458,4 +458,24 @@ impl<'a> BoardInteraction<'a> for V4<'a> {
     async fn get_mptt_current(&mut self) -> Result<Current, FatError> {
         self.charger.get_mppt_current()
     }
+
+    async fn detect_sensors(&mut self) -> Result<alloc::string::String, FatError> {
+        // Delegate to sensor autodetect and build JSON
+        use alloc::string::ToString;
+        let detected = self.sensor.autodetect().await?;
+        // Build JSON manually to avoid exposing internal types
+        let mut s = alloc::string::String::from("{\"plants\":[");
+        for (i, (a, b)) in detected.iter().enumerate() {
+            if i != 0 {
+                s.push(',');
+            }
+            s.push_str("{\"a\":");
+            s.push_str(if *a { "true" } else { "false" });
+            s.push_str(",\"b\":");
+            s.push_str(if *b { "true" } else { "false" });
+            s.push('}');
+        }
+        s.push_str("]}");
+        Ok(s)
+    }
 }