/*
  RadioLib Pager (POCSAG) Receive Example

  This example shows how to receive FSK packets without using
  SX127x packet engine.

  This example receives POCSAG messages using SX1278's
  FSK modem in direct mode.

  Other modules that can be used to receive POCSAG:
  - SX127x/RFM9x
  - RF69
  - SX1231
  - CC1101
  - Si443x/RFM2x

  For default module settings, see the wiki page
  https://github.com/jgromes/RadioLib/wiki/Default-configuration#sx127xrfm9x---lora-modem

  For full API reference, see the GitHub Pages
  https://jgromes.github.io/RadioLib/
*/

// include the library
#include <RadioLib.h>

// SX1278 has the following connections:
// NSS pin:   10
// DIO0 pin:  2
// RESET pin: 9
// DIO1 pin:  3
SX1278 radio = new Module(10, 2, 9, 3);

// receiving packets requires connection
// to the module direct output pin,
// here connected to Arduino pin 5
// SX127x/RFM9x:  DIO2
// RF69:          DIO2
// SX1231:        DIO2
// CC1101:        GDO2
// Si443x/RFM2x:  GPIO
const int pin = 5;

// create Pager client instance using the FSK module
PagerClient pager(&radio);

// or detect the pinout automatically using RadioBoards
// https://github.com/radiolib-org/RadioBoards
/*
#define RADIO_BOARD_AUTO
#include <RadioBoards.h>
Radio radio = new RadioModule();
*/

void setup() {
  Serial.begin(9600);

  // initialize SX1278 at 434 MHz
  Serial.print(F("[SX1278] Initializing ... "));
  ConfigFSK_t config;
  config.frequency = 434;
  int state = radio.beginFSK(config);

  // when using one of the non-LoRa modules for RTTY
  // (RF69, CC1101, Si4432 etc.), use the basic begin() method
  // int state = radio.begin(config);

  if (state == RADIOLIB_ERR_NONE) {
    Serial.println(F("success!"));
  } else {
    Serial.print(F("failed, code "));
    Serial.println(state);
    while (true) { delay(10); }
  }

  // initialize Pager client
  Serial.print(F("[Pager] Initializing ... "));
  // base (center) frequency:     434.0 MHz
  // speed:                       1200 bps
  state = pager.begin(434.0, 1200);
  if (state == RADIOLIB_ERR_NONE) {
    Serial.println(F("success!"));
  } else {
    Serial.print(F("failed, code "));
    Serial.println(state);
    while (true) { delay(10); }
  }

  // start receiving POCSAG messages
  Serial.print(F("[Pager] Starting to listen ... "));
  // address of this "pager":     1234567
  state = pager.startReceive(pin, 1234567);
  if (state == RADIOLIB_ERR_NONE) {
    Serial.println(F("success!"));
  } else {
    Serial.print(F("failed, code "));
    Serial.println(state);
    while (true) { delay(10); }
  }

}

void loop() {
  // the number of batches to wait for
  // 2 batches will usually be enough to fit short and medium messages
  if (pager.available() >= 2) {
    Serial.print(F("[Pager] Received pager data, decoding ... "));

    // you can read the data as an Arduino String
    String str;
    int state = pager.readData(str);

    // you can also receive data as byte array
    /*
      byte byteArr[8];
      size_t numBytes = 0;
      int state = radio.receive(byteArr, &numBytes);
    */

    if (state == RADIOLIB_ERR_NONE) {
      Serial.println(F("success!"));

      // print the received data
      Serial.print(F("[Pager] Data:\t"));
      Serial.println(str);

    } else {
      // some error occurred
      Serial.print(F("failed, code "));
      Serial.println(state);

    }
  }
}
