Lukas Bachschwell
1bb6704d6e
Added HardwareSerial* as parameter to print person Fixed bug in check for file Added RFID and Finger revoke mechanisms Added user scan Added set user credits Enabled creditsystem
426 lines
9.8 KiB
C++
426 lines
9.8 KiB
C++
#include <SPI.h>
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#include <Wire.h>
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#include <SD.h>
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#include "beerbox.h"
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#include <LiquidCrystal_I2C.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <Adafruit_Fingerprint.h>
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Adafruit_Fingerprint finger = Adafruit_Fingerprint(&Serial2);
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LiquidCrystal_I2C lcd(0x38, 8, 2); // 0x38 for PCF***A on address 000
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#define debug 1 //General debug out on/off
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File myFile;
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const int chipSelect = 53;
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char toprint[255]; // General print Buffer
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Beerbox *box;
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//int maxDrink = 1; // TODO add this to the box struct
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int lastButtonState = 1;
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int currentDrink = 0;
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int lastPersonIndex = -1;
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Person* persons;
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String rfID;
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unsigned long oldTime = 0;
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unsigned long ledTime = 0;
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void setup() {
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//generall debugging
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Serial.begin(115200);
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//LCD init
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lcd.init();
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pinMode(2, INPUT_PULLUP);
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pinMode(3, OUTPUT);
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pinMode(led, OUTPUT);
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//tone(3,440,5000);
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//Fingerprint init
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finger.begin(57600);
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if (finger.verifyPassword()) {
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if(debug)Serial.println("Found fingerprint sensor!");
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} else {
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if(debug)Serial.println("Did not find fingerprint sensor :(");
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while (1);
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}
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// RFID Reader init
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Serial1.begin(9600);
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// BLE Com init
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Serial3.begin(115200);
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if(debug)Serial.print("Initializing SD card...");
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// On the Ethernet Shield, CS is pin 4. It's set as an output by default.
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// Note that even if it's not used as the CS pin, the hardware SS pin
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// (10 on most Arduino boards, 53 on the Mega) must be left as an output
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// or the SD library functions will not work.
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pinMode(SS, OUTPUT);
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if (!SD.begin(chipSelect)) {
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if(debug)Serial.println("initialization failed!");
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return;
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}
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if(debug)Serial.println("initialization done.");
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//check_for_file("p001", "per");
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box = new Beerbox;
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box = read_beerbox(box);
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persons = readAllPersons();
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lcd.print("Drink: _");
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lcd.setCursor(0, 1);
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lcd.print(box->drinks[0].name);
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currentDrink = 0;
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box->waiting = false;
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//turnOn led
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digitalWrite(led,HIGH);
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ledTime = millis();
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}
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void loop() {
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checkFinger();
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checkRFID();
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checkButton();
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boxTimer();
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ledTimer();
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bluetoothCommands();
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}//end loop
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void check_for_file(String filename, String extension) {
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String str = filename + '.' + extension;
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char* buf = NULL;
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str.toCharArray(buf, str.length() + 1);
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if (SD.exists(str)) {
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if(debug)Serial.println(str + " exists.");
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}
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else {
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if(debug)Serial.println(str + " doesn't exist.");
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}
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}
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//BEYOND THIS POINT IS THE LEYER OF BEERBOX -- ENTER AT YOUR OWN RISK######################################
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char tmp_filename[FILE_NAME_LEN + FILE_EXTENSION_LEN + 2];
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Beerbox* read_beerbox(Beerbox *box) {
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File read;
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int num_read = 0;
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int index;
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char tmp[(DRINK_NAME_MAX_LENGTH + 1) * NUM_OF_DRINKS];
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int i = 0;
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read = SD.open("bb.con", FILE_READ);
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if (read == false) {
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if(debug)Serial.print("error while reading!\n");
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if(debug)Serial.print("-ABORT!\n\n");
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while (1);
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}
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//get drinks
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for (i = 0 ; i < NUM_OF_DRINKS ; i++) {
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read_line_from_file(read, tmp, sizeof(tmp));
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if (strlen(tmp)) {
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sscanf(tmp, " drink number %d: %s", &index, &box->drinks[i].name);
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read_line_from_file(read, tmp, sizeof(tmp));
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sscanf(tmp, " %*s %d ", &box->drinks[i].price);
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} else {
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strcpy(box->drinks[i].name, "slot empty");
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box->drinks[i].price = -1;
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}
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}
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for (i = 0; (i < NUM_OF_DRINKS) && (box->drinks[i].price != -1); i++) {
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sprintf(toprint, "drink number %i: %s\nprice: %d\n", i , box->drinks[i].name, box->drinks[i].price);
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if(debug)Serial.println(toprint);
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}
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if (i < NUM_OF_DRINKS) {
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sprintf(toprint, "Slots %d - %d are not in use!\n", i + 1, NUM_OF_DRINKS);
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box->maxDrink = i;
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if(debug)Serial.println(toprint);
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}
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read.close();
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return box;
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}
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bool personExists(char *filename){
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if((strcmp(strlwr(filename + (strlen(filename) - 4)), ".per")==0)&&(filename[0]=='P')){
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//valid person name
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if(SD.exists(filename))return true;
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}
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return false;
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}
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Person read_person(Beerbox *box, char *filename) {
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Person aperson;
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File read;
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char tmp[25];//longest line is rfid_uuid
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//giving the full filename here, since it makes stuff easier
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//if(debug)Serial.print("The filename is: ");
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//if(debug)Serial.println(filename);
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read = SD.open(filename, FILE_READ);
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if (read == false) {
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if(debug)Serial.print("error while reading!\n");
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if(debug)Serial.print("ABORT!\n\n");
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while (-1);
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}
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strcpy(aperson.file_name, filename);
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//reset momentary array
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for (int i = 0; i < NUM_OF_DRINKS; i++) {
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aperson.drinks_taken[i] = -1;
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}
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//First read all the metadata
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//name
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read_line_from_file(read, tmp, sizeof(tmp));
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strcpy(aperson.name, tmp);
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//rfid_uuid
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memset(aperson.rfid_uuid, 0, 13);
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read_line_from_file(read, tmp, sizeof(tmp));
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sscanf(tmp, "rfid_uuid: %12s", &aperson.rfid_uuid);
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//if(debug)Serial.println(aperson.rfid_uuid);
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read_line_from_file(read, tmp, sizeof(tmp));
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sscanf(tmp, "finger_uuid: %d", &aperson.finger_uuid);
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//if(debug)Serial.println(aperson.finger_uuid);
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//credits_left
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read_line_from_file(read, tmp, sizeof(tmp));
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sscanf(tmp, "credits_left: %d", &aperson.credits_left);
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//if(debug)Serial.println(aperson.credits_left);
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while (read_line_from_file(read, tmp, sizeof(tmp)), strlen(tmp) > 0) {
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int tmpCount = 0;
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int tmpDrink = 0;
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sscanf(tmp, "drink_Count_%d: %d", &tmpDrink, &tmpCount);
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if (strlen(tmp)) {
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//if(debug)Serial.print("drink: ");
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//if(debug)Serial.print(tmpDrink);
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//if(debug)Serial.print(" count: ");
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//if(debug)Serial.println(tmpCount);
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aperson.drinks_taken[tmpDrink] = tmpCount;
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}
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}
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if (aperson.finger_uuid > box->maxID) box->maxID = aperson.finger_uuid;
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//if(debug)print_person(box, &aperson,&Serial);
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print_person_JSON(box,&aperson,&Serial);
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read.close();
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return aperson;
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}
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void print_person(Beerbox *box, Person *aperson, HardwareSerial* com) {
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sprintf(toprint, "\nPerson is called \"%s\" and has the filename \"%s\".\n", aperson->name, aperson->file_name);
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com->write(toprint);
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sprintf(toprint, "rfid_uuid: %s\n", aperson->rfid_uuid);
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com->write(toprint);
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sprintf(toprint, "finger_uuid: %u\n", aperson->finger_uuid);
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com->print(toprint);
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sprintf(toprint, "credits_left: %u\n", aperson->credits_left);
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com->print(toprint);
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for (int i = 0; i < box->maxDrink; i++) {
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if (aperson->drinks_taken[i] != -1) {
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sprintf(toprint, "\nDrink: %s\n", box->drinks[i].name);
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com->write(toprint);
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sprintf(toprint, "Drink %d: %d\n", i, aperson->drinks_taken[i]);
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com->write(toprint);
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sprintf(toprint, "Total: %d.%02d Euro\n", aperson->drinks_taken[i]*box->drinks[i].price / 100, (aperson->drinks_taken[i]*box->drinks[i].price) % 100);
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com->write(toprint);
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}
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}
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}
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int update_pers_file() {
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Person thisPerson = persons[lastPersonIndex];
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File write;
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char tmp[25];
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int i = 0;
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//if(debug)Serial.println(thisPerson.file_name);
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write = SD.open(thisPerson.file_name, FILE_WRITE);
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if (write == NULL) {
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if(debug)Serial.print("error while reading!\n");
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if(debug)Serial.print("ABORT!\n\n");
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while (-1);
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}
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write.seek(0);
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sprintf(tmp, "%s\n", thisPerson.name);
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write.write(tmp, strlen(tmp));
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sprintf(tmp, "rfid_uuid: %s\n", thisPerson.rfid_uuid);
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write.write(tmp, strlen(tmp));
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sprintf(tmp, "finger_uuid: %u\n", thisPerson.finger_uuid);
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write.write(tmp, strlen(tmp));
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sprintf(tmp, "credits_left: %u\n", thisPerson.credits_left);
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write.write(tmp, strlen(tmp));
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for (i = 0; i < box->maxDrink; i++) {
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if (thisPerson.drinks_taken[i] != -1) {
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sprintf(tmp, "\ndrink_Count_%d: %d\n", i, thisPerson.drinks_taken[i]);
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write.write(tmp, strlen(tmp));
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if(debug)Serial.println(tmp);
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}
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}
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write.close();
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return 0;
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}
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char* read_from_file_until(File stream, char *str, int max_len, char until) {
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int i = 0;
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int tmp_int = 0;
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memset(str, 0, max_len);
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for (i = 0; (tmp_int != until) && (i < (max_len - 1)) && (tmp_int != -1); i++) {
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tmp_int = stream.read();
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//if(debug)Serial.print("%c", tmp_int);
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str[i] = tmp_int;
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}
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if (tmp_int == -1) {
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//May occur more often as the function tries to read a certain number of drinks.
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//if(debug)Serial.print("END OF FILE REACHED!\nABORT!!\n\n");
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str[0] = 0;
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return str;
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}
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if (str[0] != '\n')str[i - 1] = 0;
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return str;
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}
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char *read_line_from_file(File stream, char *str, int max_len) {
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do {
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str = read_from_file_until(stream, str, max_len, '\n');
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} while ((str[0] == '\n'));
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return str;
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}
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Person* readAllPersons () {
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File dir = SD.open("/");
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dir.rewindDirectory();
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box->personCount = 0;
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//count the valid persons:
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while (true) {
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File entry = dir.openNextFile();
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if (! entry) {// no more files
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break;
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}
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if (!entry.isDirectory()) {
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if ((strcmp(strlwr(entry.name() + (strlen(entry.name()) - 4)), ".per")==0)&&(entry.name()[0]=='P'))
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{
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box->personCount++; //Yeah it is a person!
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}
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}
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entry.close();
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}
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//now store them
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//if(debug)Serial.print("count:");
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//if(debug)Serial.print(box->personCount);
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Person* readPersons = new Person[box->personCount];
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int counter = 0;
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dir.rewindDirectory();
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while (true) {
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File entry = dir.openNextFile();
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if (! entry) {// no more files
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break;
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}
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if (!entry.isDirectory()) {
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int8_t len = strlen(entry.name());
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if ((strstr(strlwr(entry.name() + (len - 4)), ".per"))&&(entry.name()[0]=='P'))
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{
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//Yeah it is a person!
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//if(debug)Serial.print("Person: ");
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//if(debug)Serial.println(entry.name());
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Person thisPerson = read_person(box, entry.name());
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readPersons[counter] = thisPerson;
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counter++;
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}
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}
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entry.close();
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}
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dir.close();
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if(debug)Serial.println("Read all Persons!");
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return readPersons;
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}
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