Mercurial > public > ostc4
view Discovery/Src/firmwareJumpToApplication.c @ 232:f0069f002c55 div-fixes-4-1
Bugfix: make date/time setting work over reboots
Setting the time/date over the UART interface or by the menu, seems
to work, but a reboot of the RTE brings back strange, seemingly
random, time.
The reason for this is rather simple. In the settings, a time
is stored, based on some flawed logic, and that time was restored
on reboot. There is no reason to store any time, when the moment of
restoring it is unrelated in time. So, the fix is simple: do not
set time (in the RTC) based on some time from the past. The whole idea
of a RTC is that it does preserve the time for you, as long its
powered. Any attempt to do things better using stored time data is
futile (and nonsense).
And while working on his, also kick out some useless code from the RTE.
There is no reason to initialize the time on the RTC to some random
time/date in the past. A zero data/time is as good and any random
date.
Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
| author | Jan Mulder <jlmulder@xs4all.nl> |
|---|---|
| date | Wed, 03 Apr 2019 21:11:56 +0200 |
| parents | 5f11787b4f42 |
| children |
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/** ****************************************************************************** * @file firmwareJumpToApplication.c * @author heinrichs weikamp gmbh * @version V0.0.1 * @date 05-May-2015 * @version V0.0.1 * @since 05-May-2015 * @brief jump to application in higher flash region * @verbatim ============================================================================== ##### How to use ##### ============================================================================== ============================================================================== ##### From AN2557 ##### STM32F10xxx In-Application programming CD00161640.pdf 2010 ============================================================================== User program conditions The user application to be loaded into the Flash memory using IAP should be built with these configuration settings: 1. Set the program load address at 0x08003000, using your toolchain linker file 2. Relocate the vector table at address 0x08003000, using the "NVIC_SetVectorTable"function or the VECT_TAB_OFFSET definition inside the "system_stm32f10x.c" can be found here system_stm32f4xx.c @endverbatim ****************************************************************************** * @attention * * <h2><center>© COPYRIGHT(c) 2015 heinrichs weikamp</center></h2> * ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "stm32f4xx_hal.h" #include "stdio.h" #include "firmwareJumpToApplication.h" /* Exported variables --------------------------------------------------------*/ /* Private types -------------------------------------------------------------*/ typedef void (*pFunction)(void); #define ApplicationAddress 0x08040000 /* Private variables ---------------------------------------------------------*/ pFunction Jump_To_Application; uint32_t JumpAddress; /* Private function prototypes -----------------------------------------------*/ /* Exported functions --------------------------------------------------------*/ uint8_t firmware_MainCodeIsProgammed(void) { uint32_t content_start; content_start = *(__IO uint32_t*)ApplicationAddress; if ((content_start & 0x2FFE0000 ) == 0x20000000) return 1; else return 0; } void firmware_JumpTo_Application(void) { /* Test if user code is programmed starting from address "ApplicationAddress" */ if (((*(__IO uint32_t*)ApplicationAddress) & 0x2FFE0000 ) == 0x20000000) { /* Jump to user application */ JumpAddress = *(__IO uint32_t*) (ApplicationAddress + 4); Jump_To_Application = (pFunction) JumpAddress; /* Initialize user application's Stack Pointer */ __set_MSP(*(__IO uint32_t*) ApplicationAddress); Jump_To_Application(); } while (1) {} } /* Private functions ---------------------------------------------------------*/