Index: excitation.c
===================================================================
--- excitation.c	(revision 24596)
+++ excitation.c	(revision 24597)
@@ -26,7 +26,54 @@
 
 #include "config.h"
 
+#include "hid_dad.h"
+
 static const char *pcb_openems_excitation_get(pcb_board_t *pcb)
 {
 	return "DUMMY_EXCITATION";
 }
+
+typedef struct{
+	PCB_DAD_DECL_NOINIT(dlg)
+	int active; /* already open - allow only one instance */
+} exc_ctx_t;
+
+exc_ctx_t exc_ctx;
+
+static void exc_close_cb(void *caller_data, pcb_hid_attr_ev_t ev)
+{
+	exc_ctx_t *ctx = caller_data;
+	PCB_DAD_FREE(ctx->dlg);
+	memset(ctx, 0, sizeof(exc_ctx_t)); /* reset all states to the initial - includes ctx->active = 0; */
+}
+
+static void pcb_dlg_exc(void)
+{
+	pcb_hid_dad_buttons_t clbtn[] = {{"Close", 0}, {NULL, 0}};
+	if (exc_ctx.active)
+		return; /* do not open another */
+
+	PCB_DAD_BEGIN_VBOX(exc_ctx.dlg);
+		PCB_DAD_COMPFLAG(exc_ctx.dlg, PCB_HATF_EXPFILL);
+		PCB_DAD_LABEL(exc_ctx.dlg, "foo");
+		PCB_DAD_BUTTON_CLOSES(exc_ctx.dlg, clbtn);
+	PCB_DAD_END(exc_ctx.dlg);
+
+	/* set up the context */
+	exc_ctx.active = 1;
+
+	PCB_DAD_NEW("openems_excitation", exc_ctx.dlg, "openems: excitation", &exc_ctx, pcb_false, exc_close_cb);
+}
+
+static const char pcb_acts_OpenemsExcitation[] = 
+	"OpenemsExcitation()\n"
+	"OpenemsExcitation(select, excitationname)\n"
+	"OpenemsExcitation(set, paramname, paramval)\n"
+	"OpenemsExcitation(get, paramname)\n"
+	;
+
+static const char pcb_acth_OpenemsExcitation[] = "Select which openEMS excitation method should be exported and manipulate the associated parameters. When invoked without arguments a dialog box with the same functionality is presented.";
+static fgw_error_t pcb_act_OpenemsExcitation(fgw_arg_t *res, int argc, fgw_arg_t *argv)
+{
+	return 0;
+}
Index: export_openems.c
===================================================================
--- export_openems.c	(revision 24596)
+++ export_openems.c	(revision 24597)
@@ -822,7 +822,8 @@
 }
 
 static pcb_action_t openems_action_list[] = {
-	{"mesh", pcb_act_mesh, pcb_acth_mesh, pcb_acts_mesh}
+	{"mesh", pcb_act_mesh, pcb_acth_mesh, pcb_acts_mesh},
+	{"OpenemsExcitation", pcb_act_OpenemsExcitation, pcb_acth_OpenemsExcitation, pcb_acts_OpenemsExcitation}
 };
 
 PCB_REGISTER_ACTIONS(openems_action_list, openems_cookie)