niklas.brunke/borrow-system-locker
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alle Locker öffnen gleichzeitig, Hardcodes implementiert

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Niklas Brunke
2026-03-10 13:22:08 +01:00
parent 811e718b6a
commit 68d1e5769f
2 changed files with 178 additions and 41 deletions
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206
borrow-system-locker.ino
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@@ -8,7 +8,7 @@
// Hardware configuration
const int RELAY_PINS[6] = {13, 12, 14, 27, 26, 25}; // Relay pins for doors 1-6
const int DOOR_OPEN_TIME = 5000; // 5 seconds in milliseconds
const int DOOR_OPEN_TIME = 10000;
// I2C devices
LiquidCrystal_I2C lcd(0x27, 16, 2); // LCD with I2C address 0x27
@@ -22,6 +22,15 @@ unsigned long lockoutEndTime = 0;
const int MAX_FAILED_ATTEMPTS = 3;
const unsigned long LOCKOUT_DURATION = 30000; // 30 seconds in milliseconds
// Door control state
struct DoorState {
bool isOpen;
unsigned long openedAt;
int doorNumber;
};
DoorState doorStates[6] = {{false, 0, 0}};
bool doorsActive = false;
void setup() {
Serial.begin(115200);
@@ -82,11 +91,14 @@ void loop() {
}
}
// Handle door timers (non-blocking)
handleDoorTimers();
// Check if keypad button was pressed
keypad.updateFIFO();
char button = keypad.getButton();
if (button != 0 && !processingLoan) {
if (button != 0 && !processingLoan && !doorsActive) {
handleKeypadInput(button);
}
@@ -101,8 +113,11 @@ void handleKeypadInput(char button) {
// Submit code
if (currentCode.length() == 6) {
processLoanCode(currentCode);
} else if (currentCode.length() == 8) {
// Check for hardcode
checkHardcode(currentCode);
} else {
showError("Code muss 6-stellig sein!");
showError("Code: 6 oder 8 Ziffern!");
currentCode = "";
updateCodeDisplay();
}
@@ -114,7 +129,7 @@ void handleKeypadInput(char button) {
lcd.print("Code eingeben: ");
} else {
// Add digit to code
if (currentCode.length() < 6) {
if (currentCode.length() < 8) {
currentCode += button;
updateCodeDisplay();
}
@@ -125,7 +140,7 @@ void updateCodeDisplay() {
lcd.setCursor(0, 1);
// Display asterisks for entered digits
String display = "";
for (int i = 0; i < currentCode.length(); i++) {
for (unsigned int i = 0; i < currentCode.length(); i++) {
display += "*";
}
// Pad with spaces
@@ -198,15 +213,16 @@ void processLoanCode(String code) {
lcd.print("Ausleihe");
}
// Open doors one by one
// Collect all door numbers to open
JsonArray lockerArray = doc.as<JsonArray>();
int doorNumbers[6];
int doorCount = 0;
for (JsonVariant locker : lockerArray) {
int doorNumber = locker.as<int>();
if (doorNumber >= 1 && doorNumber <= 6) {
if (doorNumber >= 1 && doorNumber <= 6 && doorCount < 6) {
doorNumbers[doorCount] = doorNumber;
doorCount++;
openDoor(doorNumber);
}
}
@@ -216,19 +232,96 @@ void processLoanCode(String code) {
return;
}
// Open all doors simultaneously (non-blocking)
openDoorsSimultaneous(doorNumbers, doorCount);
// Update loan status in backend
if (isReturn) {
setReturnDate(code);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Rueckgabe OK!");
} else {
setTakeDate(code);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Ausleihe OK!");
}
// Wait for all doors to close, then show completion message
// This will be handled by handleDoorTimers() and finishLoanProcess()
processingLoan = false;
}
void openDoorsSimultaneous(int doorNumbers[], int count) {
doorsActive = true;
unsigned long now = millis();
// Display which doors are opening
lcd.setCursor(0, 1);
lcd.print("Fach: ");
// Show door numbers
for (int i = 0; i < count && i < 4; i++) { // Max 4 doors shown due to LCD width
lcd.print(doorNumbers[i]);
if (i < count - 1) lcd.print(",");
}
if (count > 4) {
lcd.print("...");
}
// Pad with spaces
String padding = "";
for (int i = 0; i < (10 - count * 2); i++) {
padding += " ";
}
lcd.print(padding);
// Open all doors at the same time
for (int i = 0; i < count; i++) {
int doorNumber = doorNumbers[i];
if (doorNumber >= 1 && doorNumber <= 6) {
int pinIndex = doorNumber - 1;
// Activate relay (LOW = on for most relay modules)
digitalWrite(RELAY_PINS[pinIndex], LOW);
// Track door state
doorStates[pinIndex].isOpen = true;
doorStates[pinIndex].openedAt = now;
doorStates[pinIndex].doorNumber = doorNumber;
Serial.println("Opened door " + String(doorNumber));
}
}
}
void handleDoorTimers() {
if (!doorsActive) return;
unsigned long now = millis();
bool anyDoorOpen = false;
// Check each door
for (int i = 0; i < 6; i++) {
if (doorStates[i].isOpen) {
// Check if door should be closed
if (now - doorStates[i].openedAt >= DOOR_OPEN_TIME) {
// Close door
digitalWrite(RELAY_PINS[i], HIGH);
doorStates[i].isOpen = false;
Serial.println("Closed door " + String(doorStates[i].doorNumber));
} else {
anyDoorOpen = true;
}
}
}
// If no doors are open anymore, finish the process
if (!anyDoorOpen) {
doorsActive = false;
finishLoanProcess();
}
}
void finishLoanProcess() {
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Vorgang OK!");
lcd.setCursor(0, 1);
lcd.print("Vielen Dank!");
@@ -246,6 +339,7 @@ bool getLoanInfo(String loanCode, String &lockers, bool &isReturn) {
String url = String(BACKEND_URL) + "/get-loan-by-code/" + API_KEY + "/" + loanCode;
http.begin(url);
http.setTimeout(10000); // 10 second timeout
int httpCode = http.GET();
if (httpCode != 200) {
@@ -298,32 +392,6 @@ bool getLoanInfo(String loanCode, String &lockers, bool &isReturn) {
return true;
}
void openDoor(int doorNumber) {
if (doorNumber < 1 || doorNumber > 6) {
return;
}
int pinIndex = doorNumber - 1;
lcd.setCursor(0, 1);
lcd.print("Oeffne Fach ");
lcd.print(doorNumber);
lcd.print(" ");
Serial.println("Opening door " + String(doorNumber));
// Activate relay (LOW = on for most relay modules)
digitalWrite(RELAY_PINS[pinIndex], LOW);
// Keep door open for specified time
delay(DOOR_OPEN_TIME);
// Deactivate relay (close door)
digitalWrite(RELAY_PINS[pinIndex], HIGH);
Serial.println("Door " + String(doorNumber) + " closed");
}
bool setReturnDate(String loanCode) {
if (WiFi.status() != WL_CONNECTED) {
return false;
@@ -333,6 +401,7 @@ bool setReturnDate(String loanCode) {
String url = String(BACKEND_URL) + "/set-return-date/" + API_KEY + "/" + loanCode;
http.begin(url);
http.setTimeout(10000); // 10 second timeout
int httpCode = http.POST("");
bool success = (httpCode == 200);
@@ -351,6 +420,7 @@ bool setTakeDate(String loanCode) {
String url = String(BACKEND_URL) + "/set-take-date/" + API_KEY + "/" + loanCode;
http.begin(url);
http.setTimeout(10000); // 10 second timeout
int httpCode = http.POST("");
bool success = (httpCode == 200);
@@ -373,6 +443,7 @@ void showError(String message) {
void resetState() {
currentCode = "";
processingLoan = false;
doorsActive = false;
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Code eingeben:");
@@ -413,4 +484,59 @@ void connectToWiFi() {
lcd.print("WiFi Fehler!");
delay(2000);
}
}
void checkHardcode(String code) {
Serial.println("Checking hardcode: " + code);
// Check each door's hardcode
for (int i = 0; i < 6; i++) {
if (code == String(DOOR_HARDCODES[i])) {
// Hardcode matched for door i+1
Serial.println("Hardcode match for door " + String(i + 1));
// Reset failed attempts on successful hardcode
failedAttempts = 0;
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Notcode erkannt");
lcd.setCursor(0, 1);
lcd.print("Fach: ");
lcd.print(i + 1);
delay(1000);
// Open only this door
int doorNumber = i + 1;
openDoorsSimultaneous(&doorNumber, 1);
// Don't update backend (emergency access)
processingLoan = false;
return;
}
}
// No hardcode matched
failedAttempts++;
if (failedAttempts >= MAX_FAILED_ATTEMPTS) {
lockoutEndTime = millis() + LOCKOUT_DURATION;
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Zu viele Fehler!");
lcd.setCursor(0, 1);
lcd.print("Gesperrt 30s");
delay(2000);
} else {
showError("Ungueltiger Code!");
lcd.setCursor(0, 1);
lcd.print("Versuch ");
lcd.print(failedAttempts);
lcd.print("/");
lcd.print(MAX_FAILED_ATTEMPTS);
delay(2000);
}
resetState();
}