dummy login

config.h

 #define SELF_TEST_ERROR_LABEL "Error: "
 #define UID_LABEL "UID:"
 #define PWD_LABEL "PWD:"
-#define LOGIN_IN_PROGRESS "Login..."
-#define LOGIN_FAILED "Login failed"
-#define LOGIN_SUCCESS "Access granted"
+#define LOGIN_IN_PROGRESS_LABEL "Login..."
+#define LOGIN_FAILED_LABEL "Login failed"
+#define LOGIN_SUCCESS_LABEL "Access granted"
 
 #define UID_MAX_LEN 12
 #define PWD_MAX_LEN 12
 #define MAX_IDLE_TIME 20
 
 #define LOGIN_FAILED_TIME 2
+#define MAX_LOGIN_TIME 5
 
 #define SELF_TEST_INTERVAL 60
 #define SELF_TEST_ERROR_INTERVAL 2
 #define PACKET_SELF_TEST 2
 #define PACKET_LOGIN 3
 
+#define LOGIN_OK 0
+#define LOGIN_FAILED 1
+#define LOGIN_ERROR 2
+
 #define DEBUG
 
 

main.ino

         }
     }
     else if (status == LoginInProgress) {
-        lcd.print(LOGIN_IN_PROGRESS);
+        lcd.print(LOGIN_IN_PROGRESS_LABEL);
     }
     else if (status == LoginFailed) {
-        lcd.print(LOGIN_FAILED);
+        lcd.print(LOGIN_FAILED_LABEL);
     }
     else if (status == LoginSuccess) {
-        lcd.print(LOGIN_SUCCESS);
+        lcd.print(LOGIN_SUCCESS_LABEL);
     }
 }
 
     status = LoginInProgress;
     updateLcd();
 
-    delay(LOGIN_FAILED_TIME * 1000);
-
     hostCommunication.login(uid, password);
 
-    status = LoginSuccess;
-    updateLcd();
-
-    delay(LOGIN_FAILED_TIME * 1000);
+    HostCommunicationResult res = hostCommunication.read(MAX_LOGIN_TIME * 1000);
 
-    askUidPassword();
+    if (!res.isSuccess || res.length != sizeof(SERIAL_PACKET_TYPE_INT)) {
+        selfTest();
+        return;
+    }
+    else {
+        int loginRes = *(SERIAL_PACKET_TYPE_INT*)res.data;
+        if (loginRes == LOGIN_OK) {
+            status = LoginSuccess;
+        }
+        else if (loginRes == LOGIN_FAILED) {
+            status = LoginFailed;
+        }
+        else {
+            selfTest();
+            return;
+        }
+        updateLcd();
+        delay(LOGIN_FAILED_TIME * 1000);
+        askUidPassword();
+    }
 }
 
 void selfTest()