main.cpp

00001 //Test of cheap 13.56 Mhz RFID-RC522 module from eBay
00002 //This code is based on Martin Olejar's MFRC522 library. Minimal changes
00003 //Adapted for Nucleo STM32 F401RE. Should work on other Nucleos too
00004  
00005 //Connect as follows:
00006 //RFID pins        ->  Nucleo header CN5 (Arduino-compatible header)
00007 //----------------------------------------
00008 //RFID IRQ=pin5    ->   Not used. Leave open
00009 //RFID MISO=pin4   ->   Nucleo SPI_MISO=PA_6=D12
00010 //RFID MOSI=pin3   ->   Nucleo SPI_MOSI=PA_7=D11
00011 //RFID SCK=pin2    ->   Nucleo SPI_SCK =PA_5=D13
00012 //RFID SDA=pin1    ->   Nucleo SPI_CS  =PB_6=D10
00013 //RFID RST=pin7    ->   Nucleo         =PA_9=D8
00014 //3.3V and Gnd to the respective pins                              
00015                               
00016 #include "mbed.h"
00017 #include "MFRC522.h"
00018 #include "SPI.h"
00019 #include "MQTTEthernet.h"
00020 #include "MQTTClient.h"
00021 
00022 #define ECHO_SERVER_PORT   7
00023  
00024 // Nucleo Pin for MFRC522 reset (pick another D pin if you need D8)
00025 //#define MF_RESET    D8
00026  
00027 #define SPI_MOSI D11
00028 #define SPI_MISO D12
00029 #define SPI_SCK D13
00030 #define SPI_CS D10
00031 #define MF_RESET D9
00032 DigitalOut l1(D4);
00033 DigitalOut l2(D5);
00034 DigitalOut LedGreen(LED1);
00035  
00036 //Serial connection to PC for output
00037 //Serial pc(USBTX, USBRX);
00038  
00039 MFRC522    RfChip   (SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS, MF_RESET);
00040  
00041 int main(void) {
00042     //pc.printf("starting...\n");
00043     
00044     Serial pc(USBTX, USBRX);
00045     pc.baud(115200);
00046     printf("Wait a second...\r\n");
00047     char* topic = "openhab/parents/command";
00048     MQTTEthernet ipstack = MQTTEthernet();
00049     
00050     MQTT::Client<MQTTEthernet, Countdown> client = MQTT::Client<MQTTEthernet, Countdown>(ipstack);
00051     
00052     char* hostname = "172.16.73.4";
00053     int port = 1883;
00054     
00055     int rc = ipstack.connect(hostname, port);
00056     if (rc != 0)
00057         printf("rc from TCP connect is %d\n", rc);
00058         
00059     printf("Topic: %s\r\n",topic);
00060     
00061     MQTTPacket_connectData data = MQTTPacket_connectData_initializer;       
00062     data.MQTTVersion = 3;
00063     data.clientID.cstring = "parents";
00064 
00065     if ((rc = client.connect(data)) == 0)
00066         printf("rc from MQTT connect is %d\n", rc);
00067  
00068   //Init. RC522 Chip
00069   RfChip.PCD_Init();
00070  
00071   while (true) {
00072     //LedGreen = 1;
00073     pc.printf("enterd loop...\n");
00074     // Look for new cards
00075     if ( ! RfChip.PICC_IsNewCardPresent())
00076     {
00077       wait_ms(500);
00078       continue;
00079     }
00080  
00081     // Select one of the cards
00082     if ( ! RfChip.PICC_ReadCardSerial())
00083     {
00084       wait_ms(500);
00085       continue;
00086     }
00087  
00088     //LedGreen = 0;
00089     char data[20]="";
00090     char data1[20]="";
00091     
00092     // Print Card UID
00093     pc.printf("Card UID: ");
00094     printf("Size of UID: %d \n",RfChip.uid.size);
00095     for (uint8_t i = 0; i < RfChip.uid.size; i++)
00096     {
00097       char temp[5];
00098       pc.printf(" %X02", RfChip.uid.uidByte[i]);
00099       sprintf(temp,"%X02", RfChip.uid.uidByte[i]);
00100       strcat(data,temp);
00101     }
00102     
00103     /*    
00104     pc.printf("\n\r");
00105     printf("%s\n\r",data);
00106     */
00107  
00108     // Print Card type
00109     uint8_t piccType = RfChip.PICC_GetType(RfChip.uid.sak);
00110     pc.printf(" \nPICC Type: %s \n\r", RfChip.PICC_GetTypeName(piccType));
00111     wait_ms(1000);
00112     
00113     if(strcmp(data,"5C02820285024502")==0)
00114     {   
00115         strcat(data1,"fruits");
00116     }
00117     if(strcmp(data,"B3026802A002202")==0)
00118     {
00119         strcat(data1,"vegatables");
00120     }
00121     if(strcmp(data,"F2029C02AC021F02")==0)
00122     {
00123         strcat(data1,"milk");
00124     
00125     MQTT::Message message;
00126     char buf[100];
00127     sprintf(buf, "%s", data1);
00128     message.qos = MQTT::QOS0;
00129     message.retained = false;
00130     message.dup = false;
00131     message.payload = (void*)data1;
00132     message.payloadlen = strlen(data1);
00133     rc = client.publish("grocery", message); 
00134     client.yield(60000);
00135     memset(data1, '\0',sizeof(data1)); 
00136   }
00137 }
00138 }