Refactoring EPS32NVS library to Preferences library

[arcao]

• Renaming all set* functions to put
• Added functions for float, double and bool

Test code:

#include <Preferences.h>

Preferences preferences;

void setup() {
  Serial.begin(115200);
  Serial.println();

  preferences.begin("my-app", false);
  preferences.clear();

  preferences.putChar("char", -8);
  preferences.putUChar("uchar", 8);
  preferences.putShort("short", -16);
  preferences.putUShort("ushort", 16);
  preferences.putInt("int", -32);
  preferences.putUInt("uint", 32);
  preferences.putLong("long", -32);
  preferences.putULong("ulong", 32);
  preferences.putLong64("int64_t", -64);
  preferences.putULong64("uint64_t", 64);

  preferences.putFloat("float", 12.34);
  preferences.putDouble("double", 12.34);

  preferences.putBool("bool", true);

  preferences.putString("char*", "char*");
  preferences.putString("String", String("String"));

  Serial.println(preferences.getChar("char"));
  Serial.println(preferences.getUChar("uchar"));
  Serial.println(preferences.getShort("short"));
  Serial.println(preferences.getUShort("ushort"));
  Serial.println(preferences.getInt("int"));
  Serial.println(preferences.getUInt("uint"));
  Serial.println(preferences.getLong("long"));
  Serial.println(preferences.getULong("ulong"));
  Serial.println((long int)preferences.getLong64("int64_t"));
  Serial.println((unsigned long int)preferences.getULong64("uint64_t"));

  Serial.println(preferences.getFloat("float"));
  Serial.println(preferences.getDouble("double"));

  Serial.println(preferences.getBool("bool"));

  Serial.println(preferences.getString("char*", ""));
  Serial.println(preferences.getString("String", String()));

  // Close the Preferences
  preferences.end();
}

void loop() {}

Test output:

ets Jun  8 2016 00:22:57

rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
ets Jun  8 2016 00:22:57

rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0x00
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0008,len:8
load:0x3fff0010,len:1760
load:0x40078000,len:6668
load:0x40080000,len:252
entry 0x40080034

-8
8
-16
16
-32
32
-32
32
-64
64
12.34
12.34
1
char*
String