Getting out of DFU mode

markopraakli · October 7, 2014, 8:18am

Hi

Is there any options to get out from DFU mode. I’m using remote function to call System.bootloader(); and now core is waiting forever software. Is it possible to reset somehow without do it manually?

kennethlimcp · October 7, 2014, 8:26am

~~If you hit the RST button, it should probably get out of DFU.~~

~~If it doesn’t, depending on how the System.bootloader() is written, system flags might be set to stay in DFU mode till a firmware is flashed.~~

~~Try the RST button or simply flash a firmware.~~

The only way now is to flash via a firmware.

see comments here:

github.com

particle-iot/firmware/blob/7d5d7d1f74d8d8be410f08102a0944e3a2824cf4/src/spark_utilities.cpp

/**
 ******************************************************************************
 * @file    spark_utilities.cpp
 * @author  Satish Nair, Zachary Crockett and Mohit Bhoite
 * @version V1.0.0
 * @date    13-March-2013
 *
 * Updated: 14-Feb-2014 David Sidrane <david_s5@usa.net>
 * @brief   
 ******************************************************************************
  Copyright (c) 2013 Spark Labs, Inc.  All rights reserved.

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation, either
  version 3 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

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markopraakli · October 7, 2014, 8:41am

Is it possible to do any fallback/bootstrap for this? If spark is far far away from you and you accidentaly called incorrect function then perhaps after 3 or 5 resets it comes back to normal mode?

kennethlimcp · October 7, 2014, 9:32am

in this situation, I’m afraid it’s not possible since the system flag was set…

it simply requires some time-out if no firmware is flashed by modifying the original behavior of the core firmware

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Getting out of DFU mode

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