Merge pull request #4 from arduino-libraries/bootloader-version-check

Check bootloader version for OTA capability

Author: aentinger

examples/OTA_Qspi_Flash/OTA_Qspi_Flash.ino

@@ -66,6 +66,14 @@ void setup()
   Arduino_Portenta_OTA_QSPI ota(QSPI_FLASH_FATFS_MBR, 2);
   Arduino_Portenta_OTA::Error ota_err = Arduino_Portenta_OTA::Error::None;
 
+  if (!ota.isOtaCapable())
+  {
+    Serial.println("Higher version bootloader required to perform OTA.");
+    Serial.println("Please update the bootloader.");
+    Serial.println("File -> Examples -> Portenta_System -> PortentaH7_updateBootloader");
+    return;
+  }
+
   Serial.println("Initializing OTA storage");
   if ((ota_err = ota.begin()) != Arduino_Portenta_OTA::Error::None)
   {

src/Arduino_Portenta_OTA.cpp

@@ -50,10 +50,29 @@ Arduino_Portenta_OTA::~Arduino_Portenta_OTA()
  * PUBLIC MEMBER FUNCTIONS
  ******************************************************************************/
 
+bool Arduino_Portenta_OTA::isOtaCapable()
+{
+  #define BOOTLOADER_ADDR   (0x8000000)
+  uint32_t bootloader_data_offset = 0x1F000;
+  uint8_t* bootloader_data = (uint8_t*)(BOOTLOADER_ADDR + bootloader_data_offset);
+  uint8_t currentBootloaderVersion = bootloader_data[1];
+  if (currentBootloaderVersion < 22)
+    return false;
+  else
+    return true;
+}
+
 Arduino_Portenta_OTA::Error Arduino_Portenta_OTA::begin()
 {
   Serial1.begin(115200);
-  return (init() == false) ? Error::OtaStorageInit : Error::None;
+
+  if (!isOtaCapable())
+    return Error::NoCapableBootloader;
+
+  if (!init())
+    return Error::OtaStorageInit;
+
+  return Error::None;
 }
 
 Arduino_Portenta_OTA::Error Arduino_Portenta_OTA::update()

src/Arduino_Portenta_OTA.h

@@ -67,18 +67,20 @@ class Arduino_Portenta_OTA
     enum class Error : int
     {
       None                 =  0,
-      NoOtaStorage         = -1,
-      OtaStorageInit       = -2,
-      OtaStorageOpen       = -3,
-      OtaHeaderLength      = -4,
-      OtaHeaderCrc         = -5,
-      OtaHeaterMagicNumber = -6,
+      NoCapableBootloader  = -1,
+      NoOtaStorage         = -2,
+      OtaStorageInit       = -3,
+      OtaStorageOpen       = -4,
+      OtaHeaderLength      = -5,
+      OtaHeaderCrc         = -6,
+      OtaHeaterMagicNumber = -7,
     };
 
              Arduino_Portenta_OTA(StorageTypePortenta const storage_type, uint32_t const data_offset);
     virtual ~Arduino_Portenta_OTA();
 
 
+    bool  isOtaCapable();
     Error begin();
     Error update();
     void  reset();