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lib/ArduinoStreamUtils/examples/WriteBuffer/WriteBuffer.ino

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+// StreamUtils - github.com/bblanchon/ArduinoStreamUtils
+// Copyright Benoit Blanchon 2019-2021
+// MIT License
+//
+// This example shows how to buffer writes to a stream.
+//
+// Like "echo," it reads from the serial port and prints back the same thing.
+// What's interesting with this program is that it writes in chunks of
+// 8 bytes, even if it seems to write them one by one.
+//
+// As you'll see, you need to type at least 8 bytes to see something. That's
+// because it waits for the buffered to be full before sending it to the serial.
+
+#include <StreamUtils.h>
+
+// Create a new Stream that buffers all writes to Serial
+WriteBufferingStream bufferedSerial{Serial, 8};
+
+void setup() {
+  // Initialize serial port
+  Serial.begin(9600);
+  while (!Serial)
+    continue;
+
+  Serial.println(F("Send at least 8 bytes to see the result"));
+}
+
+void loop() {
+  // Even if it looks like the bytes are sent one by one, they are actual
+  // written in chunks of 8 bytes.
+  while (Serial.available()) {
+    bufferedSerial.write(Serial.read());
+  }
+}
+
+/*****************************************************
+ *                                                   *
+ *  Love this project?                               *
+ *               Star it on GitHub!                  *
+ *                                                   *
+ *                       .,,.                        *
+ *                       ,,:1.                       *
+ *                      ,.,:;1                       *
+ *                     .,,,::;:                      *
+ *                     ,,,,::;;.                     *
+ *                    .,,,:::;;;                     *
+ *       .....,,,,...,.,,,,,,:::,,,,,,,,,,,,,        *
+ *      ,,,,,,,,,,,:,...,,,,,,:::,,,,:::;;;11l       *
+ *       .;::::::::,,,,,,,,,,:::::,,::;;;1lt         *
+ *          .;;;:::,,,,,,,,::::::;:::;;1t:           *
+ *             :;;:,,,,,,::::::;;;;;;l1              *
+ *                ,,,,:::::::;;;;;;l                 *
+ *               .,,,,::::;;;;;;;::::                *
+ *               ,,,,,:::;;;;;::,:::1                *
+ *              ,,,,,::;;;t1:,,:::::;l               *
+ *             .,,,,:;;ll    ;::::::;;,              *
+ *             ,,,:;ll.        .1:::;;l              *
+ *            .,:lt,              .1;;l:             *
+ *                                                   *
+ *  https://github.com/bblanchon/ArduinoStreamUtils  *
+ *                                                   *
+ *****************************************************/