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beerbox.h

@@ -1,12 +1,17 @@
+#include <Arduino.h>
+//#include <SPI.h>
+//#include <SD.h>
+
 #ifndef BEERBOX_IS_INCLUDED
 #define BEERBOX_IS_INCLUDED
 
+
 #define NUM_OF_PEOPLE 25
 #define NUM_OF_DRINKS 10
 #define DRINK_NAME_MAX_LENGTH 13
 #define FILE_NAME_LEN 4
 #define FILE_EXTENSION_LEN 4
-#define FILE_EXTENSION "pers"
+#define FILE_EXTENSION "per"
 #define NAME_LEN 10
 
 extern int __drinks_taken;

beerbox.ino

@@ -1,9 +1,15 @@
 #include <SPI.h>
 #include <SD.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "beerbox.h"
 
 File myFile;
 const int chipSelect = 53;
 
+char leckmich[255];
+Beerbox *box;
 
 
 
@@ -30,8 +36,8 @@ void setup() {
   
   check_for_file("p001", "per");
   
-  
+  box = new Beerbox;
- 
+  box = read_beerbox(box);
 
 
 }
@@ -40,6 +46,13 @@ void setup() {
 void loop() {
 
   
+  Person myPerson = read_person(box, "p001");
+  //read_person(box, "p002");
+  
+  while(1);
+  
+  
+  
 }//end loop
 
 
@@ -55,3 +68,285 @@ void check_for_file(String filename, String extension){
     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);
+
+  }
+
+  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);
+
+      read_line_from_file(read, tmp, sizeof(tmp));
+      sscanf(tmp, " %*s %d",&box->drinks[i].quantity);
+    }else{
+        strcpy(box->drinks[i].name, "slot empty");
+        box->drinks[i].price = -1;
+        box->drinks[i].quantity = -1;
+    }
+
+  }
+
+  Serial.print(i + " drinks read!\n\n");
+
+  for(i = 0; (i < NUM_OF_DRINKS)&&(box->drinks[i].price != -1); i++){
+    
+    
+    sprintf(leckmich, "drink number : %s\nprice: %d\nquantity: %d\n\n",box->drinks[i].name,box->drinks[i].price,box->drinks[i].quantity);
+    Serial.print(leckmich);
+  }
+
+  if(i < NUM_OF_DRINKS){
+    sprintf(leckmich, "Slots %d - %d are not in use!\n", i+1, NUM_OF_DRINKS);
+    Serial.print(leckmich);
+  }
+
+  read.close();
+  return box;
+
+}
+
+Person read_person(Beerbox *box, char *filename){
+
+  Person aperson;
+
+  File read;
+
+  int num_read = 0;
+  int index;
+  int tmp_int = 0;
+
+  char tmp[(DRINK_NAME_MAX_LENGTH + 1) * NUM_OF_DRINKS];
+  char tmp_drink_name[DRINK_NAME_MAX_LENGTH + 1];
+
+  int i = 0;
+  int j = 0;
+
+  memset(tmp_filename, 0, FILE_NAME_LEN + FILE_EXTENSION_LEN + 2);
+
+  strcat(tmp_filename, filename);
+  strcat(tmp_filename, ".");
+  strcat(tmp_filename, FILE_EXTENSION);
+
+  read = SD.open(tmp_filename, FILE_READ);
+  if(read == false){
+
+    Serial.print("error while reading!\n");
+    Serial.print("ABORT!\n\n");
+    while(-1);
+
+  }
+
+  strcpy(aperson.file_name, filename);
+
+  for(i = 0; i < NUM_OF_DRINKS; i++){
+    aperson.drinks_taken[i] = -1;
+  }
+
+
+  read_line_from_file(read, tmp, sizeof(tmp));
+  strcpy(aperson.name, tmp);
+
+  read_line_from_file(read, tmp, sizeof(tmp));
+  sscanf(tmp, " %*s %d", &aperson.rfid_uuid);
+  Serial.print(aperson.rfid_uuid);
+  
+  read_line_from_file(read, tmp, sizeof(tmp));
+  sscanf(tmp, " %*s %d", &aperson.finger_uuid);
+  Serial.println(aperson.finger_uuid);
+
+
+  j = 0;
+  while(read_line_from_file(read, tmp, sizeof(tmp)), strlen(tmp) > 0){
+
+    i = 0;
+    sscanf(tmp, " %*s %s", tmp_drink_name);
+
+      for(i = 0;(i < NUM_OF_DRINKS)&&(strcmp(box->drinks[i].name, tmp_drink_name)); i++){
+        //Serial.print("It´s not drink No %d: %s\n", i+1, box->drinks[i].name );
+
+      }
+
+    if(i == NUM_OF_DRINKS){
+      //Is it in?
+      //Serial.print("Drink \"%s\" does not exist in box!\n", tmp_drink_name);
+    }else{
+
+      read_line_from_file(read, tmp, sizeof(tmp));
+      sscanf(tmp, " %*s %d", &aperson.drinks_taken[i]);
+      //Serial.print(">>Quantity: %d\n", aperson.drinks_taken[i].quantity);
+      read_line_from_file(read, tmp, sizeof(tmp));
+      //Serial.print(">>Total: %d\n\n", aperson.drinks_taken[i].total);
+    }
+
+  }
+
+
+  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;
+
+  memset(tmp_filename, 0, FILE_NAME_LEN + FILE_EXTENSION_LEN + 2);
+  strcat(tmp_filename, aperson->file_name);
+  strcat(tmp_filename, ".");
+  strcat(tmp_filename, FILE_EXTENSION);
+  
+  
+  sprintf(leckmich,"\nPerson is called \"%s\" and has the filename \"%s\".\n", aperson->name, tmp_filename);
+  Serial.write(leckmich);
+  sprintf(leckmich, "rfid_uuid:   %d\n", aperson->rfid_uuid);
+  Serial.write(leckmich);
+  sprintf(leckmich, "finger_uuid: %d\n", aperson->finger_uuid);
+  Serial.print(leckmich);
+  
+  
+  for(i = 0; i < NUM_OF_DRINKS; i++){
+
+    if(aperson->drinks_taken[i] != -1){
+
+      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;
+  //write = fopen()
+  int i = 0;
+
+  memset(tmp_filename, 0, FILE_NAME_LEN + FILE_EXTENSION_LEN + 2);
+  strcat(tmp_filename, aperson->file_name);
+  strcat(tmp_filename, ".");
+  strcat(tmp_filename, FILE_EXTENSION);
+
+  write = SD.open(tmp_filename, 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:   %d\n", aperson->rfid_uuid);
+  write.write(tmp, strlen(tmp));
+  sprintf(leckmich, "finger_uuid: %d\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;
+}
+//
+//@Lukas
+//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.
+//
+