/*!
 * @file AdafruitIO_Board.cpp
 *
 * This is part of the Adafruit IO library for the Arduino platform.
 *
 * Adafruit invests time and resources providing this open source code,
 * please support Adafruit and open-source hardware by purchasing
 * products from Adafruit!
 *
 * Written by Tony DiCola, Todd Treece for Adafruit Industries
 *
 * MIT license, all text here must be included in any redistribution.
 *
 */
#include "AdafruitIO_Board.h"

char AdafruitIO_Board::_id[64] = "";

#if defined(ARDUINO_SAMD_MKR1000)
const char AdafruitIO_Board::_type[] = "mkr1000";
#elif defined(ARDUINO_SAMD_FEATHER_M0)
const char AdafruitIO_Board::_type[] = "feather_m0";
#elif defined(ARDUINO_AVR_FEATHER32U4)
const char AdafruitIO_Board::_type[] = "feather_32u4";
#elif defined(ARDUINO_STM32_FEATHER)
const char AdafruitIO_Board::_type[] = "feather_wiced";
#elif defined(ARDUINO_ARCH_ESP32)
#include <WiFi.h>
const char AdafruitIO_Board::_type[] = "esp32";
#elif defined(ESP8266)
const char AdafruitIO_Board::_type[] = "esp8266";
#else
const char AdafruitIO_Board::_type[] = "unknown";
#endif

/**************************************************************************/
/*!
    @brief  Returns a unique board identifier based on the
            CPU characteristics.
    @return Unique board identifier.
*/
/**************************************************************************/
const char *AdafruitIO_Board::type() { return AdafruitIO_Board::_type; }

#if defined(ARDUINO_ARCH_SAMD)

/*******************************************************/
/*!
    @brief   Assigns an identifier to a SAMD-based board.
    @return  board identifier, id.
*/
/*******************************************************/
char *AdafruitIO_Board::id() {
  volatile uint32_t val1, val2, val3, val4;
  volatile uint32_t *ptr1 = (volatile uint32_t *)0x0080A00C;
  val1 = *ptr1;
  volatile uint32_t *ptr = (volatile uint32_t *)0x0080A040;
  val2 = *ptr;
  ptr++;
  val3 = *ptr;
  ptr++;
  val4 = *ptr;

  sprintf(AdafruitIO_Board::_id, "%8x%8x%8x%8x", val1, val2, val3, val4);

  return AdafruitIO_Board::_id;
}

#elif defined(ARDUINO_ARCH_AVR)
/*******************************************************/
/*!
    @brief  Assigns an identifier to an AVR-based board
            from boot_signature.
    @return board identifier, id.
*/
/*******************************************************/
char *AdafruitIO_Board::id() {
  for (int i = 0; i < 32; i++) {
    sprintf(&AdafruitIO_Board::_id[i * 2], "%02x", boot_signature_byte_get(i));
  }
  return AdafruitIO_Board::_id;
}

#elif defined(ARDUINO_ARCH_ESP32)

/*******************************************************/
/*!
    @brief  Assigns an identifier to an ESP32-based
            board from the MAC address.
    @return board identifier, id.
*/
/*******************************************************/
char *AdafruitIO_Board::id() {
  byte mac[6];
  WiFi.macAddress(mac);
  for (int i = 0; i < 6; i++) {
    sprintf(&AdafruitIO_Board::_id[i * 2], "%02x", mac[i]);
  }
  return AdafruitIO_Board::_id;
}

#elif defined(ESP8266)

/*******************************************************/
/*!
    @brief  Assigns an identifier to an ESP8266 from
            the chip identifier.
    @return board identifier, id.
*/
/*******************************************************/
char *AdafruitIO_Board::id() {
  sprintf(AdafruitIO_Board::_id, "%06x", ESP.getChipId());
  return AdafruitIO_Board::_id;
}

#elif defined(ARDUINO_STM32_FEATHER)

/*******************************************************/
/*!
    @brief  Assigns an identifier to a STM32 Feather.
    @return board identifier, id.
*/
/*******************************************************/
char *AdafruitIO_Board::id() {
  uint32_t *p_unique_id = (uint32_t *)(0x1FFF7A10);
  sprintf(AdafruitIO_Board::_id, "%08lX%08lX%08lX", p_unique_id[2],
          p_unique_id[1], p_unique_id[0]);
  return AdafruitIO_Board::_id;
}

#else

/*******************************************************/
/*!
    @brief   Identifies an unknown board type.
    @return  "unknown"
*/
/*******************************************************/
char *AdafruitIO_Board::id() {
  strcpy(AdafruitIO_Board::_id, "unknown");
  return AdafruitIO_Board::_id;
}

#endif