move diagnostics out of routing

diagnostics.ts

@@ -0,0 +1,31 @@
+namespace jacdac {
+    /**
+     * Gets the internal diagnostics data from the JACDAC transport layer
+     */
+    export function diagnostics(): jacdac.JDDiagnostics {
+        return new jacdac.JDDiagnostics(jacdac.__physGetDiagnostics());
+    }
+
+    export class JDDiagnostics {
+        busState: number;
+        busLoError: number;
+        busUartError: number;
+        busTimeoutError: number;
+        packetsSent: number;
+        packetsReceived: number;
+        packetsDropped: number;
+
+        constructor(buf: Buffer) {
+            if (!buf) return;
+            [
+                this.busState,
+                this.busLoError,
+                this.busUartError,
+                this.busTimeoutError,
+                this.packetsSent,
+                this.packetsReceived,
+                this.packetsDropped
+            ] = jdunpack<number[]>(buf, "u32 u32 u32 u32 u32 u32 u32")
+        }
+    }
+}

pxt.json

@@ -28,6 +28,7 @@
         "service.ts",
         "pipes.ts",
         "actuator.ts",
+        "diagnostics.ts",
         "ns.ts",
         "system/constants.ts",
         "base/constants.ts",

routing.ts

@@ -879,32 +879,4 @@ namespace jacdac {
         });
         loggerHost.start()
     }
-
-    export function diagnostics(): jacdac.JDDiagnostics {
-        return new jacdac.JDDiagnostics(jacdac.__physGetDiagnostics());
-    }
-
-    export class JDDiagnostics {
-        bus_state: number;
-        bus_lo_error: number;
-        bus_uart_error: number;
-        bus_timeout_error: number;
-        packets_sent: number;
-        packets_received: number;
-        packets_dropped: number;
-
-        constructor(buf: Buffer) {
-            if (!buf) return;
-
-            [
-                this.bus_state,
-                this.bus_lo_error,
-                this.bus_uart_error,
-                this.bus_timeout_error,
-                this.packets_sent,
-                this.packets_received,
-                this.packets_dropped
-            ] = pins.unpackBuffer("7I", buf)
-        }
-    }
 }