1 | #include <Arduino.h>
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2 | #include <SoftwareSerial.h>
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3 | #include <SPI.h>
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4 | #include <MFRC522.h>
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5 | #include <EEPROM.h>
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6 |
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7 | #define RST_PIN 9 // SPI Reset Pin
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8 | #define SS_PIN 10 // SPI Slave Select Pin
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9 |
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10 | MFRC522 mfrc522(SS_PIN, RST_PIN);
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11 | SoftwareSerial SIM900(7, 8);
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12 |
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13 | String pinCode = "";
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14 | String textMessage;
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15 | String IncDataSerial = "";
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16 |
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17 | const uint8_t EE_ADDR_PIN = 0;
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18 |
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19 | void writeStringToEEPROM(int addrOffset, const String &strToWrite)
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20 | {
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21 | byte len = strToWrite.length();
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22 | EEPROM.write(addrOffset, len);
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23 | for (int i = 0; i < len; i++)
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24 | {
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25 | EEPROM.write(addrOffset + 1 + i, strToWrite[i]);
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26 | }
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27 | }
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28 |
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29 | String readStringFromEEPROM(int addrOffset)
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30 | {
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31 | int newStrLen = EEPROM.read(addrOffset);
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32 | char data[newStrLen + 1];
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33 | for (int i = 0; i < newStrLen; i++)
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34 | {
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35 | data[i] = EEPROM.read(addrOffset + 1 + i);
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36 | }
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37 | return String(data);
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38 | }
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39 |
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40 | void powerUpSIM900(){
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41 | // pinMode(9, OUTPUT);
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42 | // digitalWrite(9,LOW);
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43 | // delay(1000);
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44 | // digitalWrite(9,HIGH);
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45 | // delay(2500);
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46 | // digitalWrite(9,LOW);
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47 | // delay(3500);
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48 | }
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49 |
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50 | void initSIM900(){
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51 | Serial.println("START... Warte...");
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52 | SIM900.begin(19200);
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53 | pinCode = readStringFromEEPROM(EE_ADDR_PIN);
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54 | Serial.println(pinCode);
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55 | if(pinCode.length() != 256){
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56 | SIM900.print("AT+CPIN=5343\r");
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57 | delay(100);
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58 | SIM900.print("AT+CMGF=1\r");
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59 | delay(100);
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60 | // Set module to send SMS data to serial out upon receipt
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61 | SIM900.print("AT+CNMI=2,2,0,0,0\r");
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62 | delay(100);
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63 | }else
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64 | {
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65 | Serial.println("Pin eingabe erforderlich");
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66 | }
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67 |
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68 | }
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69 |
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70 | void setup()
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71 | {
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72 | Serial.begin(19200);
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73 | SPI.begin();
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74 | powerUpSIM900();
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75 | initSIM900();
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76 | mfrc522.PCD_Init();
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77 | }
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78 |
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79 | void loop()
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80 | {
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81 | if (mfrc522.PICC_IsNewCardPresent() && mfrc522.PICC_ReadCardSerial() ) {
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82 | Serial.print("Gelesene UID:");
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83 | for (byte i = 0; i < mfrc522.uid.size; i++) {
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84 | // Abstand zwischen HEX-Zahlen und führende Null bei Byte < 16
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85 | Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
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86 | Serial.print(mfrc522.uid.uidByte[i], HEX);
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87 | }
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88 | Serial.println();
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89 |
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90 | // Versetzt die gelesene Karte in einen Ruhemodus, um nach anderen Karten suchen zu können.
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91 | mfrc522.PICC_HaltA();
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92 | delay(1000);
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93 | }
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94 |
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95 | if(SIM900.available()){
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96 | mfrc522.PCD_AntennaOff();
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97 | delay(100);
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98 | textMessage = SIM900.readString();
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99 | Serial.println(textMessage);
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100 | delay(100);
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101 | mfrc522.PCD_AntennaOn();
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102 | }
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103 |
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104 | if(Serial.available()){
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105 | Serial.println("serila");
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106 | String recSerial = Serial.readString();
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107 | if(recSerial == "1"){
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108 | Serial.println("pin Eingeben.");
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109 | }else{
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110 | pinCode = recSerial;
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111 | writeStringToEEPROM(EE_ADDR_PIN, pinCode);
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112 | initSIM900();
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113 | };
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114 | }
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115 |
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116 |
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117 | }
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