eorg_oz/beerbox
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beerbox/beerbox.ino

487 lines
11 KiB
C++
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#include <SPI.h>
#include <Wire.h>
#include <SD.h>
#include "beerbox.h"
#include <LiquidCrystal_I2C.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <Adafruit_Fingerprint.h>
Adafruit_Fingerprint finger = Adafruit_Fingerprint(&Serial2);
LiquidCrystal_I2C lcd(0x38, 8, 2); // 0x38 for PCF***A on address 000
File myFile;
const int chipSelect = 53;
char toprint[255];
Beerbox *box;
int drinksMax = 1; // TODO add this to the box struct
int maxID = 0;
int lastButtonState = 1;
int currentDrink = 0;
int lastPersonIndex = -1;
Person* persons;
int personCount;
String rfID;
unsigned long oldTime = 0;
unsigned long ledTime = 0;
void setup() {
//generall debugging
Serial.begin(115200);
//LCD init
lcd.init();
pinMode(2, INPUT_PULLUP);
pinMode(3, OUTPUT);
pinMode(led, OUTPUT);
//tone(3,440,5000);
//Fingerprint init
finger.begin(57600);
if (finger.verifyPassword()) {
Serial.println("Found fingerprint sensor!");
} else {
Serial.println("Did not find fingerprint sensor :(");
while (1);
}
// RFID Reader init
Serial1.begin(9600);
// BLE Com init
Serial3.begin(115200);
Serial.print("Initializing SD card...");
// On the Ethernet Shield, CS is pin 4. It's set as an output by default.
// Note that even if it's not used as the CS pin, the hardware SS pin
// (10 on most Arduino boards, 53 on the Mega) must be left as an output
// or the SD library functions will not work.
pinMode(SS, OUTPUT);
if (!SD.begin(chipSelect)) {
Serial.println("initialization failed!");
return;
}
Serial.println("initialization done.");
//check_for_file("p001", "per");
box = new Beerbox;
box = read_beerbox(box);
persons = readAllPersons();
lcd.print("Drink: _");
lcd.setCursor(0, 1);
lcd.print(box->drinks[0].name);
currentDrink = 0;
box->waiting = false;
//turnOn led
digitalWrite(led,HIGH);
ledTime = millis();
}
void loop() {
checkFinger();
checkRFID();
checkButton();
boxTimer();
ledTimer();
if (Serial3.available() > 0) {
char incomingByte = Serial3.read();
if (incomingByte == '!') { //2 createnew user
incomingByte = Serial3.read();
String personName;
while (incomingByte != ';')
{
personName = String(personName + incomingByte);
incomingByte = Serial3.read();
}
Serial.println(personName);
lcd.clear();
lcd.print(personName);
Serial.println(maxID);
//lcd.setCursor(0,1);
//lcd.print("Fin pls");
int fingerReturn = -1;
while (fingerReturn != 0)
{
fingerReturn = getFingerprintEnroll(maxID + 1);
}
lcd.clear();
lcd.print(personName);
lcd.setCursor(0, 1);
lcd.print("RFID pls");
zugang = "";
while (zugang == "") {
getRFIDEnroll();
}
Serial.println(zugang);
maxID++;
Person* newPerson = new Person;
personName.toCharArray(newPerson->name, personName.length()+1);
char tmp[FILE_NAME_LEN + 1];
sprintf(tmp,"p%03d%s",maxID,FILE_EXTENSION);
strcpy(newPerson->file_name, tmp);
zugang.toCharArray(newPerson->rfid_uuid, zugang.length()+1);
newPerson->finger_uuid = maxID;
newPerson->credits_left = 1000;
for (int i = 0; i < drinksMax; i++) {
newPerson->drinks_taken[i]=0;
}
write_pers_file(newPerson);
zugang = ""; // reset here
lcd.clear();
lcd.print(personName);
lcd.setCursor(0, 1);
lcd.print("Sucess!");
delay(1000);
//and revert to normal:
lcd.clear();
lcd.print("Drink:");
lcd.setCursor(0, 1);
lcd.print(box->drinks[currentDrink].name);
}
}
}//end loop
void check_for_file(String filename, String extension) {
String str = filename + '.' + extension;
char* buf = NULL;
str.toCharArray(buf, str.length() + 1);
if (SD.exists("p001.per")) {
Serial.println(str + " exists.");
}
else {
Serial.println(str + " doesn't exist.");
}
}
//BEYOND THIS POINT IS THE LEYER OF BEERBOX -- ENTER AT YOUR OWN RISK
char tmp_filename[FILE_NAME_LEN + FILE_EXTENSION_LEN + 2];
Beerbox* read_beerbox(Beerbox *box) {
File read;
int num_read = 0;
int index;
char tmp[(DRINK_NAME_MAX_LENGTH + 1) * NUM_OF_DRINKS];
int i = 0;
read = SD.open("bb.con", FILE_READ);
if (read == false) {
Serial.print("error while reading!\n");
Serial.print("-ABORT!\n\n");
while (1);
}
//get drinks
for (i = 0 ; i < NUM_OF_DRINKS ; i++) {
read_line_from_file(read, tmp, sizeof(tmp));
if (strlen(tmp)) {
sscanf(tmp, " drink number %d: %s", &index, &box->drinks[i].name);
read_line_from_file(read, tmp, sizeof(tmp));
sscanf(tmp, " %*s %d ", &box->drinks[i].price);
} else {
strcpy(box->drinks[i].name, "slot empty");
box->drinks[i].price = -1;
}
}
for (i = 0; (i < NUM_OF_DRINKS) && (box->drinks[i].price != -1); i++) {
sprintf(toprint, "drink number %i: %s\nprice: %d\n", i , box->drinks[i].name, box->drinks[i].price);
Serial.println(toprint);
}
if (i < NUM_OF_DRINKS) {
sprintf(toprint, "Slots %d - %d are not in use!\n", i + 1, NUM_OF_DRINKS);
drinksMax = i;
Serial.println(toprint);
}
read.close();
return box;
}
Person read_person(Beerbox *box, char *filename) {
Person aperson;
File read;
char tmp[25];//longest line is rfid_uuid
//giving the full filename here, since it makes stuff easier
//Serial.print("The filename is: ");
//Serial.println(filename);
read = SD.open(filename, FILE_READ);
if (read == false) {
Serial.print("error while reading!\n");
Serial.print("ABORT!\n\n");
while (-1);
}
strcpy(aperson.file_name, filename);
//reset momentary array
for (int i = 0; i < NUM_OF_DRINKS; i++) {
aperson.drinks_taken[i] = -1;
}
//First read all the metadata
//name
read_line_from_file(read, tmp, sizeof(tmp));
strcpy(aperson.name, tmp);
//rfid_uuid
memset(aperson.rfid_uuid, 0, 13);
read_line_from_file(read, tmp, sizeof(tmp));
sscanf(tmp, "rfid_uuid: %12s", &aperson.rfid_uuid);
Serial.println(aperson.rfid_uuid);
read_line_from_file(read, tmp, sizeof(tmp));
sscanf(tmp, "finger_uuid: %d", &aperson.finger_uuid);
//Serial.println(aperson.finger_uuid);
//credits_left
read_line_from_file(read, tmp, sizeof(tmp));
sscanf(tmp, "credits_left: %d", &aperson.credits_left);
//Serial.println(aperson.credits_left);
while (read_line_from_file(read, tmp, sizeof(tmp)), strlen(tmp) > 0) {
int tmpCount = 0;
int tmpDrink = 0;
sscanf(tmp, "drink_Count_%d: %d", &tmpDrink, &tmpCount);
if (strlen(tmp)) {
//Serial.print("drink: ");
//Serial.print(tmpDrink);
//Serial.print(" count: ");
//Serial.println(tmpCount);
aperson.drinks_taken[tmpDrink] = tmpCount;
}
}
print_person(box, &aperson);
//comment back in once it is fixed
//update_pers_file(box, &aperson);
read.close();
return aperson;
}
void print_person(Beerbox *box, Person *aperson) {
int i = 0;
sprintf(toprint, "\nPerson is called \"%s\" and has the filename \"%s\".\n", aperson->name, aperson->file_name);
Serial.write(toprint);
sprintf(toprint, "rfid_uuid: %s\n", aperson->rfid_uuid);
Serial.write(toprint);
sprintf(toprint, "finger_uuid: %u\n", aperson->finger_uuid);
if (aperson->finger_uuid > maxID) maxID = aperson->finger_uuid;
Serial.print(toprint);
sprintf(toprint, "credits_left: %u\n", aperson->credits_left);
Serial.print(toprint);
for (i = 0; i < drinksMax; i++) {
if (aperson->drinks_taken[i] != -1) {
sprintf(toprint, "\nDrink: %s\n", box->drinks[i].name);
Serial.write(toprint);
sprintf(toprint, "Drink %d: %d\n", i, aperson->drinks_taken[i]);
Serial.write(toprint);
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);
Serial.write(toprint);
}
}
}
int update_pers_file() {
Person thisPerson = persons[lastPersonIndex];
File write;
char tmp[25];
int i = 0;
//Serial.println(thisPerson.file_name);
write = SD.open(thisPerson.file_name, FILE_WRITE);
if (write == NULL) {
Serial.print("error while reading!\n");
Serial.print("ABORT!\n\n");
while (-1);
}
write.seek(0);
sprintf(tmp, "%s\n", thisPerson.name);
write.write(tmp, strlen(tmp));
sprintf(tmp, "rfid_uuid: %s\n", thisPerson.rfid_uuid);
write.write(tmp, strlen(tmp));
sprintf(tmp, "finger_uuid: %u\n", thisPerson.finger_uuid);
write.write(tmp, strlen(tmp));
sprintf(tmp, "credits_left: %u\n", thisPerson.credits_left);
write.write(tmp, strlen(tmp));
for (i = 0; i < drinksMax; i++) {
if (thisPerson.drinks_taken[i] != -1) {
sprintf(tmp, "\ndrink_Count_%d: %d\n", i, thisPerson.drinks_taken[i]);
write.write(tmp, strlen(tmp));
Serial.println(tmp);
}
}
write.close();
return 0;
}
char* read_from_file_until(File stream, char *str, int max_len, char until) {
int i = 0;
int tmp_int = 0;
memset(str, 0, max_len);
for (i = 0; (tmp_int != until) && (i < (max_len - 1)) && (tmp_int != -1); i++) {
tmp_int = stream.read();
//Serial.print("%c", tmp_int);
str[i] = tmp_int;
}
if (tmp_int == -1) {
//May occur more often as the function tries to read a certain number of drinks.
//Serial.print("END OF FILE REACHED!\nABORT!!\n\n");
str[0] = 0;
return str;
}
if (str[0] != '\n')str[i - 1] = 0;
return str;
}
char *read_line_from_file(File stream, char *str, int max_len) {
do {
str = read_from_file_until(stream, str, max_len, '\n');
} while ((str[0] == '\n'));
return str;
}
Person* readAllPersons () {
File dir = SD.open("/");
dir.rewindDirectory();
personCount = 0;
//count the valid persons:
while (true) {
File entry = dir.openNextFile();
if (! entry) {// no more files
break;
}
if (!entry.isDirectory()) {
if (strcmp(strlwr(entry.name() + (strlen(entry.name()) - 4)), ".per")==0)
{
personCount++; //Yeah it is a person!
}
}
entry.close();
}
//now store them
//Serial.print("count:");
//Serial.print(personCount);
Person* readPersons = new Person[personCount];
int counter = 0;
dir.rewindDirectory();
while (true) {
File entry = dir.openNextFile();
if (! entry) {// no more files
break;
}
if (!entry.isDirectory()) {
int8_t len = strlen(entry.name());
if (strstr(strlwr(entry.name() + (len - 4)), ".per"))
{
//Yeah it is a person!
//Serial.print("Person: ");
//Serial.println(entry.name());
Person thisPerson = read_person(box, entry.name());
readPersons[counter] = thisPerson;
counter++;
}
}
entry.close();
}
dir.close();
Serial.println("Read all!");
return readPersons;
}
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