OpenBLT: blink yellow LED faster if bad nBank status is detected https://github.com/rusefi/rusefi/issues/5921

firmware/bootloader/bootloader_main.cpp

@@ -22,7 +22,8 @@ protected:
 
 		while (true) {
 			palTogglePad(yellowPort, yellowPin);
-			chThdSleepMilliseconds(250);
+			// blink 3 times faster if Dual Bank is not enabled
+			chThdSleepMilliseconds(isFlashDualBank() ? 250 : 80);
 		}
 	}
 };

firmware/bootloader/openblt_chibios/flash.h

@@ -39,7 +39,7 @@ blt_bool FlashWriteChecksum(void);
 blt_bool FlashVerifyChecksum(void);
 blt_bool FlashDone(void);
 blt_addr FlashGetUserProgBaseAddress(void);
-
+bool     isFlashDualBank(void);
 
 #endif /* FLASH_H */
 /*********************************** end of flash.h ************************************/

firmware/bootloader/openblt_chibios/openblt_flash.cpp

@@ -44,3 +44,12 @@ blt_bool FlashVerifyChecksum() {
 	// Naive check: if the first block is blank, there's no code there
 	return intFlashIsErased(FlashGetUserProgBaseAddress(), 4) ? BLT_FALSE : BLT_TRUE;
 }
+
+bool isFlashDualBank(void) {
+#ifdef STM32F7XX
+	// cleared bit indicates dual bank
+	return (FLASH->OPTCR & FLASH_OPTCR_nDBANK) == 0;
+#else
+	return true;
+#endif
+}