eorg_oz/beerbox
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beerbox/beerbox.ino

515 lines
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C++
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#include <SPI.h>
#include <Wire.h>
#include <SD.h>
#include <LiquidCrystal_I2C.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "beerbox.h"
#include <Adafruit_Fingerprint.h>
Adafruit_Fingerprint finger = Adafruit_Fingerprint(&Serial2);
LiquidCrystal_I2C lcd(0x38, 8, 2); // 0x38 for PCF***A on address 000
//######### RFID CONSTANTS ##########
const int startZeichen = 02; // Chip-Kennung beginnt mit 02
const int endeZeichen = 03; // ASCII CR bendet Code
const int kennungLaenge = 12; // Laenge Chip-Code 10 ASCII-Zeichen
const int gesamtKennungLaenge = 14; // Code-Laenge + Start- und Ende-Byte
char code[kennungLaenge + 1]; // fuer den Code und abschliessende Null
int bytesGelesen = 0;
int zaehlerFehlerCode = 0;
String zugang = "000000000000"; // zugangscode zwischenspeicher, Standard
//#######################
File myFile;
const int chipSelect = 53;
char leckmich[255];
Beerbox *box;
int drinksMax = 1;
int lastButtonState = 1;
int currentDrink = 0;
void setup() {
//generall debugging
Serial.begin(115200);
//LCD init
lcd.init();
pinMode(2, INPUT_PULLUP);
//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);
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");
readAllPersons();
box = new Beerbox;
box = read_beerbox(box);
lcd.print("BOXready");
lcd.setCursor(0, 1);
}
void loop() {
checkFinger();
checkRFID();
checkButton();
//Person myPerson = read_person(box, "p001");
//read_person(box, "p002");
}//end loop
void checkButton() {
//one change per click to make seleting drinks easier for the drunken
//if (digitalRead(2) != lastButtonState) {
//delayMicroseconds(50); //debounce delay
if (digitalRead(2) != lastButtonState) {
//ok we have a change!
if (digitalRead(2) == LOW) {
//pushed
if (currentDrink == drinksMax - 1) currentDrink = -1;
currentDrink++;
Serial.println(box->drinks[currentDrink].name);
lcd.clear();
lcd.print("Drink:");
lcd.setCursor(0, 1);
lcd.print(box->drinks[currentDrink].name);
}
else {//released
}
lastButtonState = digitalRead(2);
}
//}
}
bool checkFinger() {
uint8_t p = finger.getImage();
if (p != FINGERPRINT_OK) return -1;
p = finger.image2Tz();
if (p != FINGERPRINT_OK) return -1;
p = finger.fingerFastSearch();
if (p != FINGERPRINT_OK) return -1;
// found a match!
Serial.print("Found ID #"); Serial.print(finger.fingerID);
Serial.print(" with confidence of "); Serial.println(finger.confidence);
//TODO @ALEX Do something with finger ID
// finger.fingerID
//int getFingerIndex(Person* persons, finger.fingerID)
}
void checkRFID() {
Serial1.flush();
if (Serial1.available() >= gesamtKennungLaenge) // wenn genug Zeichen eingegangen ...
{
if (Serial1.read() == startZeichen) // und das Startzeichen erkannt wurde ...
{
//Serial.print("Start-Byte erkannt ... ");
bytesGelesen = 0; // starten Lesen, also Zaehler auf 0
while (bytesGelesen < kennungLaenge) // lese 12-stelligen Code
{
char zeichen = Serial1.read(); // lesen Zeichen
//Serial.print(zeichen); // zur Kontrolle
//Serial.print(" ");
if (zeichen == endeZeichen) // suche nach Ende-Befehl
{
//Serial.println("CR erkannt ...");
break;
}
code[bytesGelesen] = zeichen; // speicher Zeichen im Puffer
bytesGelesen = bytesGelesen + 1; // ein Zeichen weiter
}
code[bytesGelesen] = 0; // beende Zeichenkette
Serial.print("RFID-Code lautet: ");
Serial.println(code);
zugang = code; // Umwandlung Code in String
//TODO @Alex
// Do something with the 12 char string code
zugang = "";
delay(1000); // debounce time
serial1_flush_buffer();
}
}
}
void serial1_flush_buffer()
{
while (Serial1.read() >= 0)
; // do nothing
}
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 personcount Basically not needed...
// char tmpStr[19];
// read_line_from_file(read, tmpStr, sizeof(tmpStr));
// if (strlen(tmpStr)) {
// sscanf(tmpStr, "personCount: %d", &box->personCount);
// }
//
// sprintf(leckmich, "%i persons known!\n", box->personCount );
// Serial.print(leckmich);
//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;
}
}
Serial.print(i);
Serial.println(" drinks read!\n");
for (i = 0; (i < NUM_OF_DRINKS) && (box->drinks[i].price != -1); i++) {
sprintf(leckmich, "drink number %i: %s\nprice: %d\n", i , box->drinks[i].name, box->drinks[i].price);
Serial.println(leckmich);
}
if (i < NUM_OF_DRINKS) {
sprintf(leckmich, "Slots %d - %d are not in use!\n", i + 1, NUM_OF_DRINKS);
drinksMax = i;
Serial.println(leckmich);
}
read.close();
return box;
}
Person read_person(Beerbox *box, char *filename) {
Person aperson;
File read;
char tmp[21];//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);
//finger_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);
}
}
//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(leckmich, "\nPerson is called \"%s\" and has the filename \"%s\".\n", aperson->name, aperson->file_name);
Serial.write(leckmich);
sprintf(leckmich, "rfid_uuid: %s\n", aperson->rfid_uuid);
Serial.write(leckmich);
sprintf(leckmich, "finger_uuid: %u\n", aperson->finger_uuid);
Serial.print(leckmich);
sprintf(leckmich, "credits_left: %u\n", aperson->credits_left);
Serial.print(leckmich);
for (i = 0; i < NUM_OF_DRINKS; i++) {
if (aperson->drinks_taken[i] != -1) {
/* //Rework that
sprintf(leckmich, "\nDrink: %s\n", box->drinks[i].name);
Serial.write(leckmich);
sprintf(leckmich, "Consumed: %d\n", aperson->drinks_taken[i]);
Serial.write(leckmich);
sprintf(leckmich, "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(leckmich);
*/
}
}
}
int update_pers_file(Beerbox *box, Person *aperson) {
File write;
char *tmp = NULL;
int i = 0;
write = SD.open(aperson->file_name, FILE_WRITE);
write.seek(0);
if (write == NULL) {
Serial.print("error while reading!\n");
Serial.print("ABORT!\n\n");
while (-1);
}
sprintf(leckmich, " %s\n", aperson->name);
write.write(tmp, strlen(tmp));
sprintf(leckmich, "rfid_uuid: %s\n", aperson->rfid_uuid);
write.write(tmp, strlen(tmp));
sprintf(leckmich, "finger_uuid: %u\n", aperson->finger_uuid);
write.write(tmp, strlen(tmp));
for (i = 0; i < NUM_OF_DRINKS; i++) {
if (aperson->drinks_taken[i] != -1) {
sprintf(leckmich, "\nDrink: %s\n", box->drinks[i].name);
write.write(tmp, strlen(tmp));
sprintf(leckmich, "Consumed: %d\n", aperson->drinks_taken[i]);
write.write(tmp, strlen(tmp));
sprintf(leckmich, "Total: %d\n\n", aperson->drinks_taken[i]*box->drinks[i].price);
write.write(tmp, strlen(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;
}
//
//LB
//Funktion schreiben, welche ein Array vom struct Person (Beliebige Groesse) sowie eine rfid-kennung uebernimmt und den Index der entsprechenden Person im array (beginnend bei 0)zurueckgiebt.
int getRFIDIndex(Person* persons, char* rfid) {
for (int i = 0; i < sizeof(persons) / sizeof(Person); i++) {
if (!strcmp(persons[i].rfid_uuid, rfid)) {
return i;
}
}
}
int getFingerIndex(Person* persons, uint8_t fingerID) {
for (int i = 0; i < sizeof(persons) / sizeof(Person); i++) {
if (persons[i].finger_uuid == fingerID) {
return i;
}
}
}
void readAllPersons () {
File dir = SD.open("/");
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());
//print_person(box, &thisPerson);
}
}
entry.close();
}
Serial.println("Read all!");
}
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