ESPNow.h

//
// A small ESPNow abstraction which makes code which uses ESPNow more readable
//

/*
#######################################################################################################################
#
#    Copyright (c) 2021 framp at linux-tips-and-tricks dot de
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
#######################################################################################################################
*/

// Latest code available on https://github.com/framps/ESP_stuff/tree/main/ESPNow_DHT22_BME280_Sensor

#pragma once

#include "Arduino.h"
#include "TempHumSensor.h"

	class ESPNow {

//	Defaults
  const static int WIFI_CHANNEL = 1;
  const static int SLEEP_TIME = 60e6;
  const static int SEND_TIMEOUT = 10000;

  public:

    struct PowerDownConfig {
      // uint8_t pin;   does not work :-(
      int vcc;
    };

    ESPNow(uint8_t* gatewayMac, int wifiChannel=WIFI_CHANNEL, int sleepTime=SLEEP_TIME, int sendTimeout=SEND_TIMEOUT, PowerDownConfig* powerDownConfig=NULL);
    virtual ~ESPNow() { };

    int start();                          // rc 0 -> request failed
    int send(Sensor &s);                  // rc 0 -> request failed
    int waitForCompletion();              // rc 0 -> request failed
    void shutdown();                      // rc 0 -> request failed

    void enableDebug() {this->debug = true; };

    static ESPNow* instance;

  private:
    void sendData(uint8_t* mac, uint8_t status);
    void powerDown(bool down);            // true, powerDown, false powerUp
//    bool isPowerDownEnabled() { return this->powerDownConfig != NULL && this->powerDownConfig->pin > 0 && this->powerDownConfig->vcc > 0; };
    bool isPowerDownEnabled() { return this->powerDownConfig != NULL && this->powerDownConfig->vcc > 0; };

    uint8_t* gatewayMac;
    bool dataSent;
    int sleepTime;
    int wifiChannel;
    int sendTimeout;
    PowerDownConfig* powerDownConfig;
    bool debug;
    };