Fixes BLE data printing (#7699)

SuGlider · web-flow · commit 03e9e07f1a19 · 2023-02-06T14:55:41.000+02:00
* Fixes BLE data printing

BLE data has no '\0' terminator, therefore it can't be printed as a regular C string.
This fix just prints the BLE data based on its length.

* Simplify printing to a single call
diff --git a/libraries/BLE/examples/BLE_client/BLE_client.ino b/libraries/BLE/examples/BLE_client/BLE_client.ino
@@ -29,7 +29,8 @@ static void notifyCallback(
     Serial.print(" of data length ");
     Serial.println(length);
     Serial.print("data: ");
-    Serial.println((char*)pData);
+    Serial.write(pData, length);
+    Serial.println();
 }
 
 class MyClientCallback : public BLEClientCallbacks {

Original file line number	Diff line number	Diff line change
`@@ -29,7 +29,8 @@ static void notifyCallback(`
`29`	`29`	`Serial.print(" of data length ");`
`30`	`30`	`Serial.println(length);`
`31`	`31`	`Serial.print("data: ");`
`32`		`- Serial.println((char*)pData);`
	`32`	`+ Serial.write(pData, length);`
	`33`	`+ Serial.println();`
`33`	`34`	`}`
`34`	`35`
`35`	`36`	`class MyClientCallback : public BLEClientCallbacks {`