scpi: add macro for command struct

src/scpi.rs

@@ -131,7 +131,31 @@ impl<T: Device> Command<T> for HelloWorldCommand {
     }
 }
 
-pub struct Channel1SwitchCommand {}
+macro_rules! declare_channel_commands {
+    ($($header: ident),*) => {
+        mashup! {
+            $(
+                m["channel0" $header] = Channel0 $header Command;
+                m["channel1" $header] = Channel1 $header Command;
+                m["channel2" $header] = Channel2 $header Command;
+                m["channel3" $header] = Channel3 $header Command;
+            )*
+        }
+
+        m! {
+            $(
+                pub struct "channel0" $header {}
+                pub struct "channel1" $header {}
+                pub struct "channel2" $header {}
+                pub struct "channel3" $header {}
+            )*
+        }
+    };
+}
+
+declare_channel_commands!(Switch);
+
+// pub struct Channel1SwitchCommand {}
 impl<T: Device + UrukulTraits> Command<T> for Channel1SwitchCommand {
     nquery!();