Add offset to ESP32 OTA error codes

Author: pennam

src/utility/ota/OTA-esp32.cpp

@@ -30,6 +30,12 @@
 
 #include <esp_ota_ops.h>
 
+/******************************************************************************
+ * DEFINES
+ ******************************************************************************/
+
+#define ESP32_OTA_ERROR_BASE        (-300)
+
 /******************************************************************************
  * FUNCTION DEFINITION
  ******************************************************************************/
@@ -43,23 +49,23 @@ int esp32_onOTARequest(char const * ota_url)
   if ((ota_err = ota.begin()) != Arduino_ESP32_OTA::Error::None)
   {
     DEBUG_ERROR("Arduino_ESP32_OTA::begin() failed with %d", static_cast<int>(ota_err));
-    return static_cast<int>(ota_err);
+    return (ESP32_OTA_ERROR_BASE + static_cast<int>(ota_err));
   }
 
   /* Download the OTA file from the web storage location. */
   int const ota_download = ota.download(ota_url);
   if (ota_download <= 0)
   {
     DEBUG_ERROR("Arduino_ESP_OTA::download() failed with %d", ota_download);
-    return ota_download;
+    return (ESP32_OTA_ERROR_BASE + ota_download);
   }
   DEBUG_VERBOSE("Arduino_ESP_OTA::download() %d bytes downloaded", static_cast<int>(ota_download));
 
   /* Verify update integrity and apply */
   if ((ota_err = ota.update()) != Arduino_ESP32_OTA::Error::None)
   {
     DEBUG_ERROR("Arduino_ESP_OTA::update() failed with %d", static_cast<int>(ota_err));
-    return static_cast<int>(ota_err);
+    return (ESP32_OTA_ERROR_BASE + static_cast<int>(ota_err));
   }
 
   /* Perform the reset to reboot */