文件列表:

LPTIM_Timeout\EWARM\Project.ewd (36987, 2018-10-30)
LPTIM_Timeout\EWARM\Project.ewp (28557, 2018-10-30)
LPTIM_Timeout\EWARM\Project.eww (161, 2018-10-30)
LPTIM_Timeout\EWARM\startup_stm32l031xx.s (10967, 2018-10-30)
LPTIM_Timeout\EWARM\stm32l031xx_flash.icf (1351, 2018-10-30)
LPTIM_Timeout\Inc\main.h (3226, 2018-10-30)
LPTIM_Timeout\Inc\stm32l0xx_hal_conf.h (11859, 2018-10-30)
LPTIM_Timeout\Inc\stm32l0xx_it.h (2996, 2018-10-30)
LPTIM_Timeout\MDK-ARM\Project.uvoptx (4286, 2018-10-30)
LPTIM_Timeout\MDK-ARM\Project.uvprojx (19299, 2018-10-30)
LPTIM_Timeout\MDK-ARM\startup_stm32l031xx.s (10596, 2018-10-30)
LPTIM_Timeout\Src\main.c (9913, 2018-10-30)
LPTIM_Timeout\Src\stm32l0xx_hal_msp.c (4350, 2018-10-30)
LPTIM_Timeout\Src\stm32l0xx_it.c (4939, 2018-10-30)
LPTIM_Timeout\Src\system_stm32l0xx.c (10565, 2018-10-30)
LPTIM_Timeout\SW4STM32\startup_stm32l031xx.s (10328, 2018-10-30)
LPTIM_Timeout\SW4STM32\STM32L031K6_NUCLEO\.cproject (11412, 2018-10-30)
LPTIM_Timeout\SW4STM32\STM32L031K6_NUCLEO\.project (3794, 2018-10-30)
LPTIM_Timeout\SW4STM32\STM32L031K6_NUCLEO\STM32L031K6Tx_FLASH.ld (4585, 2018-10-30)
LPTIM_Timeout\SW4STM32\STM32L031K6_NUCLEO (0, 2018-10-30)
LPTIM_Timeout\EWARM (0, 2018-10-30)
LPTIM_Timeout\Inc (0, 2018-10-30)
LPTIM_Timeout\MDK-ARM (0, 2018-10-30)
LPTIM_Timeout\Src (0, 2018-10-30)
LPTIM_Timeout\SW4STM32 (0, 2018-10-30)
LPTIM_Timeout (0, 2018-10-30)

/** @page LPTIM_Timeout LPTIM Timeout example with LSE clock source @verbatim ******************** (C) COPYRIGHT 2016 STMicroelectronics ******************* * @file LPTIM/LPTIM_Timeout/readme.txt * @author MCD Application Team * @brief Description of the LPTIM Timeout example. ****************************************************************************** * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************** @endverbatim @par Example Description How to implement, through the HAL LPTIM API, a timeout with the LPTIMER peripheral, to wake up the system from a low-power mode. The main() function configures the LPTIMER and goes in STOP mode. In order to start the timer a first trigger is needed on (PC.3)(LPTIM_ETR). Any successive trigger event on (PC.3) will reset the counter and the timer will restart. The timeout value corresponds to the compare value (32768). If after the first trigger no other trigger occurs within the expected time frame, the MCU is woken-up by the compare match event and LED2 toggles. In this example the LPTIM is clocked by the LSI Timeout = (Compare + 1) / LPTIM_Clock = (32767 + 1) / LSI_Clock_Frequency Once the system is woken up it remains in run mode. The led keeps toggling each time the timer expires. @note Care must be taken when using HAL_Delay(), this function provides accurate delay (in milliseconds) based on variable incremented in SysTick ISR. This implies that if HAL_Delay() is called from a peripheral ISR process, then the SysTick interrupt must have higher priority (numerically lower) than the peripheral interrupt. Otherwise the caller ISR process will be blocked. To change the SysTick interrupt priority you have to use HAL_NVIC_SetPriority() function. @note The application needs to ensure that the SysTick time base is always set to 1 millisecond to have correct HAL operation. @par Directory contents - LPTIM/LPTIM_Timeout/Inc/stm32l0xx_hal_conf.h HAL configuration file - LPTIM/LPTIM_Timeout/Inc/stm32l0xx_it.h Interrupt handlers header file - LPTIM/LPTIM_Timeout/Inc/main.h Header for main.c module - LPTIM/LPTIM_Timeout/Src/stm32l0xx_it.c Interrupt handlers - LPTIM/LPTIM_Timeout/Src/main.c Main program - LPTIM/LPTIM_Timeout/Src/stm32l0xx_hal_msp.c HAL MSP module - LPTIM/LPTIM_Timeout/Src/system_stm32l0xx.c STM32L0xx system source file @par Hardware and Software environment - This example runs on STM32L031xx devices. - This example has been tested with STMicroelectronics STM32L031K6-Nucleo board and can be easily tailored to any other supported device and development board. - Connect an external trigger (ETR) to PC.3(pin 37 in CN7 connector ). If the trigger is higher than 1Hz, the counter is regularly reset, the system stays in STOP mode. If the trigger is lower than 1Hz, the counter expires and the system is woken up. @par How to use it ? In order to make the program work, you must do the following : - Open your preferred tool chain - Rebuild all files and load your image into target memory - Run the example *

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