try this instead

thomasjball · thomasjball · commit 939cf8b6deed · 2025-11-16T16:48:08.000Z
diff --git a/cpp/jddisplay.cpp b/cpp/jddisplay.cpp
@@ -253,13 +253,18 @@ void JDDisplay::step(bool sendImage) {
         }
     }
 
-    if (displayServiceNum == 0 || !sendImage) {
+    if (displayServiceNum == 0) {
         // poke the control service to enumerate
         queuePkt(JD_SERVICE_NUMBER_CTRL, JD_CMD_ADVERTISEMENT_DATA, 0);
         flushSend();
         return;
     }
 
+    if (!sendImage) {
+        flushSend();
+        return;   
+    }
+
     if (palette) {
         {
 #define PALETTE_SIZE (16 * 4)

Original file line number	Diff line number	Diff line change
`@@ -253,13 +253,18 @@ void JDDisplay::step(bool sendImage) {`
`253`	`253`	`}`
`254`	`254`	`}`
`255`	`255`
`256`		`- if (displayServiceNum == 0 \|\| !sendImage) {`
	`256`	`+ if (displayServiceNum == 0) {`
`257`	`257`	`// poke the control service to enumerate`
`258`	`258`	`queuePkt(JD_SERVICE_NUMBER_CTRL, JD_CMD_ADVERTISEMENT_DATA, 0);`
`259`	`259`	`flushSend();`
`260`	`260`	`return;`
`261`	`261`	`}`
`262`	`262`
	`263`	`+ if (!sendImage) {`
	`264`	`+ flushSend();`
	`265`	`+ return;`
	`266`	`+ }`
	`267`	`+`
`263`	`268`	`if (palette) {`
`264`	`269`	`{`
`265`	`270`	`#define PALETTE_SIZE (16 * 4)`