feat(uart): uart break example improvement (#10525)

SuGlider · web-flow · commit 74e4a744ce0b · 2024-10-25T20:48:35.000+03:00
prints the HEXA and CHAR in order to allow the user to see why there is 1 extra char (0x00) when BREAK is received.
diff --git a/libraries/ESP32/examples/Serial/OnReceiveError_BREAK_Demo/OnReceiveError_BREAK_Demo.ino b/libraries/ESP32/examples/Serial/OnReceiveError_BREAK_Demo/OnReceiveError_BREAK_Demo.ino
@@ -80,7 +80,11 @@ void onReceiveFunction() {
   received_bytes = received_bytes + available;
   Serial.printf("onReceive Callback:: There are %d bytes available: {", available);
   while (available--) {
-    Serial.print((char)Serial1.read());
+    char c = Serial1.read();
+    Serial.printf("0x%x='%c'", c, c);
+    if (available) {
+      Serial.print(" ");
+    }
   }
   Serial.println("}");
 }

Original file line number	Diff line number	Diff line change
`@@ -80,7 +80,11 @@ void onReceiveFunction() {`
`80`	`80`	`received_bytes = received_bytes + available;`
`81`	`81`	`Serial.printf("onReceive Callback:: There are %d bytes available: {", available);`
`82`	`82`	`while (available--) {`
`83`		`- Serial.print((char)Serial1.read());`
	`83`	`+ char c = Serial1.read();`
	`84`	`+ Serial.printf("0x%x='%c'", c, c);`
	`85`	`+ if (available) {`
	`86`	`+ Serial.print(" ");`
	`87`	`+ }`
`84`	`88`	`}`
`85`	`89`	`Serial.println("}");`
`86`	`90`	`}`