Allow Icom rigs to skip packets that do not match the cmd/subcmd sent.

This should allow some sharing between controllers

rigs/icom/frame.c

@@ -211,6 +211,16 @@ again1:
             icom_process_async_frame(rig, frm_len, buf);
             goto again1;
         }
+        // if we get a reply that is not our cmd/subcmd we should just ignore it and retry the read.
+        // this should somewhat allow splitting the COM port between two controllers
+        if (cmd != buf[4]) {
+            rig_debug(RIG_DEBUG_VERBOSE, "%s: cmd x%02d != buf x%02x so retry read\n", __func__, cmd, buf[4]);
+            goto again1;
+        }
+        if (subcmd != -1 && subcmd != buf[5]) {
+            rig_debug(RIG_DEBUG_VERBOSE, "%s: subcmd x%02d != buf x%02x so retry read\n", __func__, subcmd, buf[5]);
+            goto again1;
+        }
 
         // we might have 0xfe string during rig wakeup
         rig_debug(RIG_DEBUG_TRACE, "%s: DEBUG retval=%d, frm_len=%d, cmd=0x%02x\n",

rigs/icom/icom.h

@@ -35,7 +35,7 @@
 #include <sys/time.h>
 #endif
 
-#define BACKEND_VER "20240705"
+#define BACKEND_VER "20240707"
 
 #define ICOM_IS_ID31 rig_is_model(rig, RIG_MODEL_ID31)
 #define ICOM_IS_ID51 rig_is_model(rig, RIG_MODEL_ID51)