#include <rBase64.h>
#define blue Serial3            // bluetooth unit on tx3/rx3
uint8_t blueBuffer[1024];
char encoded[16];                    // encoded string output by base64
int inputLen;
int inputLenA;                       // length of input string for decoding last bytes
int encodedLenA;
char input[12];                      // input string for encoding
int blueSpeed;                       // speed of UART 460800
long i;
byte lang = 0;
bool sendMidiFile = false;


void setup() {
  pinMode(19,INPUT);	// does not work with/without this
  Serial.begin(460800);
  blueSpeed = 230400;
  blue.begin(blueSpeed);
 delay(5);
  blue.attachCts(19);
  Serial.println("waiting for send");
  while (!blue.available()) {}    // wait for handler
  int data = blue.read();
  if (data == 83) {
    Serial.println("sending");
    unsigned long timer = millis();
    //    encodeMidiFile();    //if connected to bluetooth device encode the file for transmission and send
    sendFile();
    timer = millis() - timer;
    Serial.print("stop sending at ");
    Serial.println(timer);
  }
}

void loop() {
  // put your main code here, to run repeatedly:

}
void sendFile() {
  byte o = 0;
  long byteCount1 = 40000;
  Serial.print("raw file length ");
  Serial.println(byteCount1);
  for (i = 0; i < byteCount1; i++) {
    blue.write(o);
    o++;
    if(o>100)o=0;
    delayMicroseconds(100);
  }
  blue.flush();
  blue.write(126);               // end of message
  blue.flush();
}