97 lines
4.7 KiB
C
97 lines
4.7 KiB
C
/************************************************************************************//**
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* \file Demo/ARMCM7_STM32F7_Nucleo_F767ZI_CubeIDE/Boot/App/app.c
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* \brief Bootloader application source file.
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* \ingroup Boot_ARMCM7_STM32F7_Nucleo_F767ZI_CubeIDE
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* \internal
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*----------------------------------------------------------------------------------------
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* C O P Y R I G H T
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*----------------------------------------------------------------------------------------
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* Copyright (c) 2020 by Feaser http://www.feaser.com All rights reserved
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*
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*----------------------------------------------------------------------------------------
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* L I C E N S E
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*----------------------------------------------------------------------------------------
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* This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as published by the Free
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* Software Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You have received a copy of the GNU General Public License along with OpenBLT. It
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* should be located in ".\Doc\license.html". If not, contact Feaser to obtain a copy.
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*
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* \endinternal
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****************************************************************************************/
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/****************************************************************************************
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* Include files
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****************************************************************************************/
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#include "boot.h" /* bootloader generic header */
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#include "stm32f7xx.h" /* STM32 CPU and HAL header */
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#include "shared_params.h" /* Shared parameters header */
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/************************************************************************************//**
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** \brief Initializes the bootloader application. Should be called once during
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** software program initialization.
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** \return none.
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**
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****************************************************************************************/
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void AppInit(void)
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{
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blt_int8u deferredInitRequestFlag = 0;
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/* initialize the shared parameters module */
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SharedParamsInit();
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/* initialize the bootloader */
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BootInit();
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#if (BOOT_COM_DEFERRED_INIT_ENABLE == 1)
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/* the bootloader is configured to NOT initialize the TCP/IP network stack by default
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* to bypass unnecessary delay times before starting the user program. the TCP/IP net-
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* work tack is now only initialized when: (a) no valid user program is detected, or
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* (b) a forced backdoor entry occurred (CpuUserProgramStartHook() returned BLT_FALSE).
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*
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* these demo bootloader and user programs have one extra feature implemented for
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* demonstration purposes. the demo user program can detect firmware update requests
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* from the TCP/IP network in which case it activates the bootloader. But...the
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* TCP/IP network stack will not be initialized in this situation. for this reason
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* the shared parameter module was integrated in both the bootloader and user program.
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* more information about the shared parameter module can be found here:
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* https://www.feaser.com/en/blog/?p=216
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*
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* the shared parameter at the first index (0) contains a flag. this flag is set to
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* 1, right before the user program activates this bootloader, to explicitly request
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* the bootloader to initialize the TCP/IP network stack. this makes it possible for
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* a firmware update to proceed. the code here reads out this flag and performs the
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* TCP/IP network stack initialization when requested.
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*/
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SharedParamsReadByIndex(0, &deferredInitRequestFlag);
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if (deferredInitRequestFlag == 1)
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{
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/* explicitly initialize all communication interface for which the deferred
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* initialization feature was enabled.
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*/
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ComDeferredInit();
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}
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#endif
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} /*** end of AppInit ***/
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/************************************************************************************//**
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** \brief Task function of the bootloader application. Should be called continuously
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** in the program loop.
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** \return none.
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**
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****************************************************************************************/
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void AppTask(void)
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{
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/* Run the bootloader task. */
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BootTask();
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} /*** end of AppTask ***/
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/*********************************** end of app.c **************************************/
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