SimpleBleDevice.ino

// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at

//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Sketch shows how to use SimpleBLE to advertise the name of the device and change it on the press of a button
// Useful if you want to advertise some sort of message
// Button is attached between GPIO 0 and GND, and the device name changes each time the button is pressed

#include "SimpleBLE.h"

#if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED)
#error Bluetooth is not enabled! Please run `make menuconfig` to and enable it
#endif

SimpleBLE ble;

void onButton() {
  String out = "BLE32 name: ";
  out += String(millis() / 1000);
  Serial.println(out);
  ble.begin(out);
}

void setup() {
  Serial.begin(115200);
  Serial.setDebugOutput(true);
  pinMode(0, INPUT_PULLUP);
  Serial.print("ESP32 SDK: ");
  Serial.println(ESP.getSdkVersion());
  ble.begin("ESP32 SimpleBLE");
  Serial.println("Press the button to change the device's name");
}

void loop() {
  static uint8_t lastPinState = 1;
  uint8_t pinState = digitalRead(0);
  if (!pinState && lastPinState) {
    onButton();
  }
  lastPinState = pinState;
  while (Serial.available()) {
    Serial.write(Serial.read());
  }
}