arduino electronic modules ds3231_ at24c32_ i2c1602_ mfrc522_ esp8266 - jie deng

8/20/2019 Arduino Electronic Modules DS3231_ AT24C32_ I2C1602_ MFRC522_ ESP8266 - Jie Deng

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ARDUINO ELECTRONIC MODULES SERIES

DS3231 AT24C32 IIC High Precision Real Time Clock Module

• DS3231: I2C real-time clock chip (RTC)

• AT24C32: storage chip 32KB EEPROM

• integrated with temperature sensor

• Integrated with CR2032 to keep the RTC running when power off


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DS3231-AT24C32 Module Connection With Arduino

• “ds3231.ino” shows you how to use this

module

• This demo is based on arduino library

DS3231-AT24C32. Download link:

http://pc.cd/vwvrtalK

• Extract the library to “Arduino Root”/libraries

then restart the arduino

http://pc.cd/vwvrtalKhttp://pc.cd/vwvrtalKhttp://pc.cd/vwvrtalKhttp://pc.cd/vwvrtalKhttp://pc.cd/vwvrtalKhttp://pc.cd/vwvrtalKhttp://pc.cd/vwvrtalK


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#include

#include

DS3231 Clock;

bool Century=false;

bool h12;

bool PM;

byte ADay, AHour, AMinute, ASecond, ABits;

bool ADy, A12h, Apm;

byte year, month, date, DoW, hour, minute, second;

void i2c_eeprom_write_byte( int deviceaddress, unsigned int eeaddress, byte data ){

int rdata = data;

Wire.beginTransmission(deviceaddress);

Wire.write((int)(eeaddress >> 8));

Wire.write((int)(eeaddress & 0xFF));

Wire.write(rdata);

Wire.endTransmission();

}

byte i2c_eeprom_read_byte( int deviceaddress, unsigned int eeaddress )

{

byte rdata = 0xFF;Wire.beginTransmission(deviceaddress);

Wire.write((int)(eeaddress >> 8));

Wire.write((int)(eeaddress & 0xFF));


Wire.requestFrom(deviceaddress,1);

if (Wire.available())

rdata = Wire.read();

return rdata;

}

ds3231.ino


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void setup() {

// Start the I2C interface

Wire.begin();

// We only need to set the time once, CR2032 can keep the time

if(i2c_eeprom_read_byte(0x57, 0) != 1)

{

Clock.setSecond(30); // Set the second

Clock.setMinute(38); // Set the minute

Clock.setHour(20); // Set the hour

Clock.setDoW(0); // Set the day of the weekClock.setDate(6); // Set the date of the month

Clock.setMonth(12); // Set the month of the year

Clock.setYear(15); // Set the year (Last two digits of the year)

// time setting completed, write the EEPROM to mark it

i2c_eeprom_write_byte(0x57,0,1); // EEPROM I2C address 0x57

}

// Start the serial interface

Serial.begin(115200);

}

ds3231.ino


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void ReadDS3231()

{

int second,minute,hour,date,month,year,temperature;

second=Clock.getSecond();

minute=Clock.getMinute();

hour=Clock.getHour(h12, PM);

date=Clock.getDate();

month=Clock.getMonth(Century);

year=Clock.getYear();

temperature=Clock.getTemperature();

Serial.print("20");Serial.print(year,DEC);

Serial.print('-');

Serial.print(month,DEC);

Serial.print('-');

Serial.print(date,DEC);

Serial.print(' ');

Serial.print(hour,DEC);

Serial.print(':');

Serial.print(minute,DEC);

Serial.print(':');

Serial.print(second,DEC);

Serial.print('\n');Serial.print("Temperature=");

Serial.print(temperature);

Serial.print('\n');

}

void loop()

{

ReadDS3231();

delay(1000);

}

ds3231.ino


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LCD1602 and I2C Interface for LCD1602

• LCD1602 consumes many arduino IOs (7 IOs)

• I2C interface for LCD1602 saves arduino IOs by using I2C

communication (Only 2 IOs needed)

• The blue knob can be used to adjust the brightness of back light

• Default address 0x27, A0 A1 A2 can be used for address modificationsee table 01


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Table 01: Address Reference


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LCD1602 Connection With Arduino

VCC VCC

GND GND

A4 SDA

A5 SCL

• Library LiquidCrystal_I2C is for LCD1602.

Download link: http://pc.cd/zpirtalK

• Check the examples in this library for more

information• “ds3231_lcd1602.ino” is an example to show

how to display date and temperature on

LCD1602. It is based on library DS3231-

AT24C32 and LiquidCrystal_I2C. Extract

libraries to “Arduino Root”/libraries to use

http://pc.cd/zpirtalKhttp://pc.cd/zpirtalKhttp://pc.cd/vwvrtalKhttp://pc.cd/vwvrtalKhttp://pc.cd/zpirtalKhttp://pc.cd/zpirtalKhttp://pc.cd/vwvrtalKhttp://pc.cd/vwvrtalKhttp://pc.cd/vwvrtalKhttp://pc.cd/zpirtalKhttp://pc.cd/zpirtalK


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#include

#include #include

LiquidCrystal_I2C lcd(0x27,16,2); // check your own device, device address in this demo is 0x27

DS3231 Clock;

bool Century=false;

bool h12;

bool PM;

byte ADay, AHour, AMinute, ASecond, ABits;

bool ADy, A12h, Apm;

byte year, month, date, DoW, hour, minute, second;

void i2c_eeprom_write_byte( int deviceaddress, unsigned int eeaddress, byte data ){

int rdata = data;


Wire.write((int)(eeaddress >> 8)); // MSB

Wire.write((int)(eeaddress & 0xFF)); // LSB

Wire.write(rdata);


}

byte i2c_eeprom_read_byte( int deviceaddress, unsigned int eeaddress )

{

byte rdata = 0xFF;


Wire.write((int)(eeaddress >> 8)); // MSB

Wire.write((int)(eeaddress & 0xFF)); // LSB


Wire.requestFrom(deviceaddress,1);

if (Wire.available())

rdata = Wire.read();

return rdata;

}

ds3231_lcd1602.ino


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lcd.clear();

lcd.print("Temperature:");

lcd.print(temperature);

// print℃

lcd.write(0xDF);

lcd.print("C");

lcd.setCursor(0, 1);

//lcd.print("20");

//lcd.print(year,DEC);//lcd.print('-');

lcd.print(month,DEC);

lcd.print('-');

lcd.print(date,DEC);

lcd.print(' ');

lcd.print(hour,DEC);

lcd.print(':');

lcd.print(minute,DEC);

lcd.print(':');

lcd.print(second,DEC);

}

void loop()

{

ReadDS3231();

delay(1000);

}

ds3231_lcd1602.ino


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MFRC522 RFID Read Module

• Power supply DC 3.3V-5V

• upports serial communication I2C communications with ISP address

(can be selected via the dip switch on the Board)

• Support card types: mifare1, mifare1 S70, Mifare UltraLight, Mifare

Pro, and Mifare Desfire• Accessories RFID module one IC card IC key ring cards


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MFRC522 RFID Module Connection With Arduino

• Library rfid is for LCD1602. Download link:

http://pc.cd/rJirtalK

• check https://github.com/miguelbalboa/rfid

for more information

• Many examples included in this library

https://my.pcloud.com/publink/show?code=XZuWVRZtyUzka9VlfbbRfUEw1SV2S9I2KQ7http://pc.cd/rJirtalKhttps://github.com/miguelbalboa/rfidhttps://github.com/miguelbalboa/rfidhttps://github.com/miguelbalboa/rfidhttp://pc.cd/rJirtalKhttp://pc.cd/rJirtalKhttps://my.pcloud.com/publink/show?code=XZuWVRZtyUzka9VlfbbRfUEw1SV2S9I2KQ7


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ESP8266 WiFi Module

• SDIO 2.0, SPI, UART

• 32-pin QFN package

• Integrated RF switch, balun, 24dBm PA, DCXO, and PMU

• Integrated RISC processor, on-chip memory and external memory interfaces

• Integrated MAC/baseband processors

•

Quality of Service management• I2S interface for high fidelity audio applications

• On-chip low-dropout linear regulators for all internal supplies

• Proprietary spurious-free clock generation architecture

• Integrated WEP, TKIP, AES, and WAPI engines

• Support AT commands, check https://github.com/espressif/esp8266_at/wiki/AT_Description

https://github.com/espressif/esp8266_at/wiki/AT_Descriptionhttps://github.com/espressif/esp8266_at/wiki/AT_Description


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ESP8266 WiFi Module Connection With Arduino

• Library ESP8266wifi can be used for this module. Download link:

http://pc.cd/wHirtalK

• Check https://github.com/ekstrand/ESP8266wifi for more information• If your arduino SoftwareSerial don’t support Baud 115200, try to use

hardware serial instead.

• You can connect esp8226 with a USB-UART(TTL) chip (e.g. PL2303,

CH340, FT232 …) and debug it by using AT commands through UART.

USR-TCP232-Test can be used for test. Link: http://pc.cd/7LirtalK
https://github.com/ekstrand/ESP8266wifi/archive/master.ziphttp://pc.cd/wHirtalKhttps://github.com/ekstrand/ESP8266wifihttp://pc.cd/7LirtalKhttp://pc.cd/7LirtalKhttp://pc.cd/7LirtalKhttp://pc.cd/7LirtalKhttp://pc.cd/7LirtalKhttp://pc.cd/7LirtalKhttp://pc.cd/7LirtalKhttp://pc.cd/7LirtalKhttps://github.com/ekstrand/ESP8266wifihttps://github.com/ekstrand/ESP8266wifihttp://pc.cd/wHirtalKhttp://pc.cd/wHirtalKhttps://github.com/ekstrand/ESP8266wifi/archive/master.zip

arduino electronic modules ds3231_ at24c32_ i2c1602_ mfrc522_ esp8266 - jie deng

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