add oppotunity protect flash from reading

user/main.c

@@ -46,6 +46,15 @@ int main()
 	FLASH_ClearFlag(FLASH_FLAG_PGPERR);
 	FLASH_ClearFlag(FLASH_FLAG_PGSERR);
 
+/*	if (FLASH_OB_GetRDP() != SET) {
+		FLASH_Unlock();                           // this line is critical!
+		FLASH_OB_Unlock();
+		FLASH_OB_RDPConfig(OB_RDP_Level_1);
+		FLASH_OB_Launch();                        // Option Bytes programming
+		FLASH_OB_Lock();
+		FLASH_Lock();
+	}*/
+
 	gpio_init();
 
 	WDG_Init();