Connection Bluetooth with ATSAMD21

Development Tools IDE 1.x
1

hello, i need help to connect this board with the bluetooth module HC-05. This is the code I'm using. I can only compile if I use SerialUSB. Any tips on how to resolve it? I've tried using the ArduinoBLE library, but without success.

#include <AudioFrequencyMeter.h>
#include <SerialCommand.h>

AudioFrequencyMeter meter;

void setup() {

  SerialUSB.begin(115200);
  SerialUSB.println("started");
  
  //Bluetooth
  Serial1.begin(115200);

  meter.setBandwidth(50, 200);    // Ignore frequency out of this range
  meter.begin(A1, 5000);             // Initialize A0 at sample rate of 45 kHz
}

void loop() {
  
  float frequency = meter.getFrequency();
  if (frequency > 0)
  {
    SerialUSB.print(frequency); SerialUSB.println(" Hz");
    Serial1.print(frequency); Serial1.println(" ");
    Serial1.write(frequency); SerialUSB.write(" Hz");
    //SerialUSB.println("-");
  }
  delay(100);
}
2

does HC-05 use 115200 baud?

3

yes

4

@gleonn, your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with (nor for advise on) your project :wink: See About the Installation & Troubleshooting category.

5

@gleonn, why did you move your topic back to Installation and Troubleshooting?

At the moment that you can upload a sketch, it has nothing to do with Installation and Troubleshooting !! If you don't agree on the category that I picked, move it somewhere else. But please move it out of Installation and Troubleshooting, else somebody will do it.

6

On Arduino M0 SerialUSB is the right name for Serial over USB.

7

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