HARSHA B.M / Smart_vending_machine_Project_W7500

Its a code of W7500 board for the vending machine to vend an item to the user within the organization. When the user is identified with the help of the RFID reader and when the user choose the item . the data is sent serially to WIZ750SR and the item is vended . The LCD displays the details of the transaction.

Dependencies:   HCSR04 MFRC522 TextLCD mbed-src

Fork of RFID_copy by Rajib Kumer Dey

main.cpp@0:1fdb07d055b9, 2018-06-07 (annotated)

Committer:
Rajib
Date:
Thu Jun 07 04:14:28 2018 +0000
Revision:
0:1fdb07d055b9
Child:
1:6cd395827886
rfid;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Rajib 0:1fdb07d055b9 1 //Test of cheap 13.56 Mhz RFID-RC522 module from eBay
Rajib 0:1fdb07d055b9 2 //This code is based on Martin Olejar's MFRC522 library. Minimal changes
Rajib 0:1fdb07d055b9 3 //Adapted for Nucleo STM32 F401RE. Should work on other Nucleos too
Rajib 0:1fdb07d055b9 4
Rajib 0:1fdb07d055b9 5 //Connect as follows:
Rajib 0:1fdb07d055b9 6 //RFID pins -> Nucleo header CN5 (Arduino-compatible header)
Rajib 0:1fdb07d055b9 7 //----------------------------------------
Rajib 0:1fdb07d055b9 8 //RFID IRQ=pin5 -> Not used. Leave open
Rajib 0:1fdb07d055b9 9 //RFID MISO=pin4 -> Nucleo SPI_MISO=PA_6=D12
Rajib 0:1fdb07d055b9 10 //RFID MOSI=pin3 -> Nucleo SPI_MOSI=PA_7=D11
Rajib 0:1fdb07d055b9 11 //RFID SCK=pin2 -> Nucleo SPI_SCK =PA_5=D13
Rajib 0:1fdb07d055b9 12 //RFID SDA=pin1 -> Nucleo SPI_CS =PB_6=D10
Rajib 0:1fdb07d055b9 13 //RFID RST=pin7 -> Nucleo =PA_9=D8
Rajib 0:1fdb07d055b9 14 //3.3V and Gnd to the respective pins
Rajib 0:1fdb07d055b9 15
Rajib 0:1fdb07d055b9 16 #include "mbed.h"
Rajib 0:1fdb07d055b9 17 #include "MFRC522.h"
Rajib 0:1fdb07d055b9 18 #include "SPI.h"
Rajib 0:1fdb07d055b9 19 #include "MQTTEthernet.h"
Rajib 0:1fdb07d055b9 20 #include "MQTTClient.h"
Rajib 0:1fdb07d055b9 21
Rajib 0:1fdb07d055b9 22 #define ECHO_SERVER_PORT 7
Rajib 0:1fdb07d055b9 23
Rajib 0:1fdb07d055b9 24 // Nucleo Pin for MFRC522 reset (pick another D pin if you need D8)
Rajib 0:1fdb07d055b9 25 //#define MF_RESET D8
Rajib 0:1fdb07d055b9 26
Rajib 0:1fdb07d055b9 27 #define SPI_MOSI D11
Rajib 0:1fdb07d055b9 28 #define SPI_MISO D12
Rajib 0:1fdb07d055b9 29 #define SPI_SCK D13
Rajib 0:1fdb07d055b9 30 #define SPI_CS D10
Rajib 0:1fdb07d055b9 31 #define MF_RESET D9
Rajib 0:1fdb07d055b9 32 DigitalOut l1(D4);
Rajib 0:1fdb07d055b9 33 DigitalOut l2(D5);
Rajib 0:1fdb07d055b9 34 DigitalOut LedGreen(LED1);
Rajib 0:1fdb07d055b9 35
Rajib 0:1fdb07d055b9 36 //Serial connection to PC for output
Rajib 0:1fdb07d055b9 37 //Serial pc(USBTX, USBRX);
Rajib 0:1fdb07d055b9 38
Rajib 0:1fdb07d055b9 39 MFRC522 RfChip (SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS, MF_RESET);
Rajib 0:1fdb07d055b9 40
Rajib 0:1fdb07d055b9 41 int main(void) {
Rajib 0:1fdb07d055b9 42 //pc.printf("starting...\n");
Rajib 0:1fdb07d055b9 43
Rajib 0:1fdb07d055b9 44 Serial pc(USBTX, USBRX);
Rajib 0:1fdb07d055b9 45 pc.baud(115200);
Rajib 0:1fdb07d055b9 46 printf("Wait a second...\r\n");
Rajib 0:1fdb07d055b9 47 char* topic = "openhab/parents/command";
Rajib 0:1fdb07d055b9 48 MQTTEthernet ipstack = MQTTEthernet();
Rajib 0:1fdb07d055b9 49
Rajib 0:1fdb07d055b9 50 MQTT::Client<MQTTEthernet, Countdown> client = MQTT::Client<MQTTEthernet, Countdown>(ipstack);
Rajib 0:1fdb07d055b9 51
Rajib 0:1fdb07d055b9 52 char* hostname = "172.16.73.4";
Rajib 0:1fdb07d055b9 53 int port = 1883;
Rajib 0:1fdb07d055b9 54
Rajib 0:1fdb07d055b9 55 int rc = ipstack.connect(hostname, port);
Rajib 0:1fdb07d055b9 56 if (rc != 0)
Rajib 0:1fdb07d055b9 57 printf("rc from TCP connect is %d\n", rc);
Rajib 0:1fdb07d055b9 58
Rajib 0:1fdb07d055b9 59 printf("Topic: %s\r\n",topic);
Rajib 0:1fdb07d055b9 60
Rajib 0:1fdb07d055b9 61 MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
Rajib 0:1fdb07d055b9 62 data.MQTTVersion = 3;
Rajib 0:1fdb07d055b9 63 data.clientID.cstring = "parents";
Rajib 0:1fdb07d055b9 64
Rajib 0:1fdb07d055b9 65 if ((rc = client.connect(data)) == 0)
Rajib 0:1fdb07d055b9 66 printf("rc from MQTT connect is %d\n", rc);
Rajib 0:1fdb07d055b9 67
Rajib 0:1fdb07d055b9 68 //Init. RC522 Chip
Rajib 0:1fdb07d055b9 69 RfChip.PCD_Init();
Rajib 0:1fdb07d055b9 70
Rajib 0:1fdb07d055b9 71 while (true) {
Rajib 0:1fdb07d055b9 72 //LedGreen = 1;
Rajib 0:1fdb07d055b9 73 pc.printf("enterd loop...\n");
Rajib 0:1fdb07d055b9 74 // Look for new cards
Rajib 0:1fdb07d055b9 75 if ( ! RfChip.PICC_IsNewCardPresent())
Rajib 0:1fdb07d055b9 76 {
Rajib 0:1fdb07d055b9 77 wait_ms(500);
Rajib 0:1fdb07d055b9 78 continue;
Rajib 0:1fdb07d055b9 79 }
Rajib 0:1fdb07d055b9 80
Rajib 0:1fdb07d055b9 81 // Select one of the cards
Rajib 0:1fdb07d055b9 82 if ( ! RfChip.PICC_ReadCardSerial())
Rajib 0:1fdb07d055b9 83 {
Rajib 0:1fdb07d055b9 84 wait_ms(500);
Rajib 0:1fdb07d055b9 85 continue;
Rajib 0:1fdb07d055b9 86 }
Rajib 0:1fdb07d055b9 87
Rajib 0:1fdb07d055b9 88 //LedGreen = 0;
Rajib 0:1fdb07d055b9 89 char data[20]="";
Rajib 0:1fdb07d055b9 90 char data1[20]="";
Rajib 0:1fdb07d055b9 91
Rajib 0:1fdb07d055b9 92 // Print Card UID
Rajib 0:1fdb07d055b9 93 pc.printf("Card UID: ");
Rajib 0:1fdb07d055b9 94 printf("Size of UID: %d \n",RfChip.uid.size);
Rajib 0:1fdb07d055b9 95 for (uint8_t i = 0; i < RfChip.uid.size; i++)
Rajib 0:1fdb07d055b9 96 {
Rajib 0:1fdb07d055b9 97 char temp[5];
Rajib 0:1fdb07d055b9 98 pc.printf(" %X02", RfChip.uid.uidByte[i]);
Rajib 0:1fdb07d055b9 99 sprintf(temp,"%X02", RfChip.uid.uidByte[i]);
Rajib 0:1fdb07d055b9 100 strcat(data,temp);
Rajib 0:1fdb07d055b9 101 }
Rajib 0:1fdb07d055b9 102
Rajib 0:1fdb07d055b9 103 /*
Rajib 0:1fdb07d055b9 104 pc.printf("\n\r");
Rajib 0:1fdb07d055b9 105 printf("%s\n\r",data);
Rajib 0:1fdb07d055b9 106 */
Rajib 0:1fdb07d055b9 107
Rajib 0:1fdb07d055b9 108 // Print Card type
Rajib 0:1fdb07d055b9 109 uint8_t piccType = RfChip.PICC_GetType(RfChip.uid.sak);
Rajib 0:1fdb07d055b9 110 pc.printf(" \nPICC Type: %s \n\r", RfChip.PICC_GetTypeName(piccType));
Rajib 0:1fdb07d055b9 111 wait_ms(1000);
Rajib 0:1fdb07d055b9 112
Rajib 0:1fdb07d055b9 113 if(strcmp(data,"5C02820285024502")==0)
Rajib 0:1fdb07d055b9 114 {
Rajib 0:1fdb07d055b9 115 strcat(data1,"fruits");
Rajib 0:1fdb07d055b9 116 }
Rajib 0:1fdb07d055b9 117 if(strcmp(data,"B3026802A002202")==0)
Rajib 0:1fdb07d055b9 118 {
Rajib 0:1fdb07d055b9 119 strcat(data1,"vegatables");
Rajib 0:1fdb07d055b9 120 }
Rajib 0:1fdb07d055b9 121 if(strcmp(data,"F2029C02AC021F02")==0)
Rajib 0:1fdb07d055b9 122 {
Rajib 0:1fdb07d055b9 123 strcat(data1,"milk");
Rajib 0:1fdb07d055b9 124
Rajib 0:1fdb07d055b9 125 MQTT::Message message;
Rajib 0:1fdb07d055b9 126 char buf[100];
Rajib 0:1fdb07d055b9 127 sprintf(buf, "%s", data1);
Rajib 0:1fdb07d055b9 128 message.qos = MQTT::QOS0;
Rajib 0:1fdb07d055b9 129 message.retained = false;
Rajib 0:1fdb07d055b9 130 message.dup = false;
Rajib 0:1fdb07d055b9 131 message.payload = (void*)data1;
Rajib 0:1fdb07d055b9 132 message.payloadlen = strlen(data1);
Rajib 0:1fdb07d055b9 133 rc = client.publish("grocery", message);
Rajib 0:1fdb07d055b9 134 client.yield(60000);
Rajib 0:1fdb07d055b9 135 memset(data1, '\0',sizeof(data1));
Rajib 0:1fdb07d055b9 136 }
Rajib 0:1fdb07d055b9 137 }
Rajib 0:1fdb07d055b9 138 }