Added the printPayloadBytes function used to print byte content of any received payload, this can help the debugging process when receiving malformatted payloads

src/app/app.ino

@@ -1,7 +1,7 @@
 /**
  * Author : Anatole SCHRAMM-HENRY
  * Created the : 11/07/2021
- * Last updated : 04/11/2025
+ * Last updated : 21/12/2025
  * This is a quick and dirty gateway firmware to receive and save data from sensors to a database
  */
 
@@ -104,7 +104,7 @@ IRAM_ATTR void PCFIRQHandler(void *p)
   PCF.digitalReadAll(pinStates);
   *(boolean *)p = true;
 
-  /* If the IRQ pin is the DIO1, manually call the LoRa IRQ handler */
+  /* If the IRQ pin is the DIO0, manually call the LoRa IRQ handler */
   if(pinStates[7] == HIGH)
   {
     LoRa.handleDio0Rise();
@@ -117,6 +117,7 @@ void setup()
   Serial.begin(115200, SERIAL_8N1, SERIAL_TX_ONLY);
   delay(1000);
   Serial.println("\nSetup begin");
+  Serial.printf("Size of mailbox data packets: %d\nSize of weather data packets: %d\n", sizeof mdp, sizeof wsdp);
   //We set the WiFi part up :
   gotIp = WiFi.onStationModeGotIP(&(gotIpFunc));
   lostConnection = WiFi.onStationModeDisconnected(&(lostConnectionFunc));
@@ -220,19 +221,20 @@ void loop()
     {
       //Payload already retrieved in LoRa module IRQ or in the previous code part
       memcpy(&packetHeader, payload, sizeof(packetHeader));
+      //printPayloadBytes(payload, sizeof payload);
       switch(packetHeader.header)
       {
         case WEATHER_STATION:
         {
           memcpy(&wsdp, payload, sizeof(wsdp));
-          debugStruct(&wsdp);
+          printStruct(&wsdp);
           insertIntoDBError = insertIntoDB(&wsdp);
         }
           break;
         case CONNECTED_MAILBOX:
         {
           memcpy(&mdp, payload, sizeof(mdp));
-          debugStruct(&mdp);
+          printStruct(&mdp);
           insertIntoDBError = insertIntoDB(&mdp);
         }
           break;
@@ -278,14 +280,14 @@ void loop()
           case WEATHER_STATION:
           {
             memcpy(&wsdp, payload, sizeof(wsdp));
-            debugStruct(&wsdp);
+            printStruct(&wsdp);
             insertIntoDBError = insertIntoDB(&wsdp);
           }
             break;
           case CONNECTED_MAILBOX:
           {
             memcpy(&mdp, payload, sizeof(mdp));
-            debugStruct(&mdp);
+            printStruct(&mdp);
             insertIntoDBError = insertIntoDB(&mdp);
           }
             break;
@@ -323,14 +325,14 @@ void loop()
           case WEATHER_STATION:
           {
             memcpy(&wsdp, payload, sizeof(wsdp));
-            debugStruct(&wsdp);
+            printStruct(&wsdp);
             insertIntoDBError = insertIntoDB(&wsdp);
           }
             break;
           case CONNECTED_MAILBOX:
           {
             memcpy(&mdp, payload, sizeof(mdp));
-            debugStruct(&mdp);
+            printStruct(&mdp);
             insertIntoDBError = insertIntoDB(&mdp);
           }
             break;
@@ -454,7 +456,7 @@ HttpClient::HttpQueryStatus insertIntoDB(WeatherStationDataPacket *p)
    return result;
 }
 
-void debugStruct(WeatherStationDataPacket *p)
+void printStruct(WeatherStationDataPacket *p)
 {
   Serial.println("##############WEATHER STATION DATA##############");
   Serial.print("ID : ");
@@ -533,7 +535,7 @@ HttpClient::HttpQueryStatus insertIntoDB(MailboxDataPacket *p)
    return result;
 }
 
-void debugStruct(MailboxDataPacket *p)
+void printStruct(MailboxDataPacket *p)
 {
   Serial.println("##############MAILBOX DATA##############");
   Serial.print("ID : ");
@@ -544,7 +546,7 @@ void debugStruct(MailboxDataPacket *p)
   
   Serial.printf("BATT :  %.5f V\n", p->battery);
   
-  Serial.print("EVENT : ");
+  Serial.printf("EVENT : %d\n", p->mailbox_event);
   switch(p->mailbox_event)
   {
     case MAILBOX_LETTER:
@@ -563,3 +565,20 @@ void debugStruct(MailboxDataPacket *p)
       break;
   }
 }
+
+void printPayloadBytes(const uint8_t *payload, size_t payload_size)
+{
+  if(!payload || !payload_size)return;
+  uint8_t buffer[32];
+  size_t safeSize = (payload_size > sizeof(buffer)) ? sizeof(buffer) : payload_size;
+  memset(buffer, 0xFF, sizeof buffer);
+  memcpy(buffer, payload, safeSize);
+
+  if(safeSize < payload_size)
+    Serial.println("/!\\ Payload size was truncated /!\\");
+
+  for(size_t i = 0; i < safeSize; i++)
+  {
+    Serial.printf("[%d]=0x%02X\n",i ,buffer[i]);
+  }
+}

src/app/definition.h

@@ -30,7 +30,7 @@ typedef enum
   MAILBOX_COLLECTED,
   MAILBOX_TEST,
   MAILBOX_UNKNOWN,
-} MAILBOX_EVENT_e;
+} __attribute__((__packed__)) MAILBOX_EVENT_e;
 
 typedef struct 
 {