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arduino-cli/libraries/RL_YX5300_Serial/examples/PlayHelloWorld/PlayHelloWorld.ino

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+/******************************************************************************
+  Simple SerialMP3Player "Hello World" example of YX5300 chip.
+
+  Copy the "hello.mp3" file to an empty SD card
+  Connect the Serial MP3 Player to the Arduino board
+    GND → GND
+    VCC → 5V
+    TX → pin 11
+    RX → pin 10
+
+  After compile and upload the code you must hear “Hello world” over and over.
+
+
+  This example code is in the public domain.
+
+  https://github.com/salvadorrueda/ArduinoSerialMP3Player
+
+  by Salvador Rueda
+ *******************************************************************************/
+
+#include "RL_YX5300_Serial.h"
+
+#define TX 11
+#define RX 10
+
+YX5300_Serial mp3(RX,TX);
+
+void setup() {
+  Serial.begin(9600);     // start serial interface
+  mp3.begin(9600);        // start mp3-communication
+  delay(500);             // wait for init
+
+  mp3.sendCommand(CMD_SEL_DEV, 0, 2);   //select sd-card
+  delay(500);             // wait for init
+}
+
+// the loop function runs over and over again forever
+void loop() {
+  mp3.play();     // Play "hello.mp3". You must hear "Hello World"
+  delay(3000);    // wait 3 seconds
+}