STM32F103C8通过定时器中断实现精确毫秒延时资源-CSDN文库

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stm32

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STM32F103C8是意法半导体（STMicroelectronics）生产的基于ARM Cortex-M3内核的微控制器，广泛应用于嵌入式系统设计。在进行实时控制系统或需要精确时间间隔的应用中，实现精确的毫秒延时是至关重要的。本教程将详细讲解如何利用STM32F103C8的定时器中断功能来实现这一目标。我们需要了解STM32的定时器结构。STM32F103C8内置了多个定时器，包括高级控制定时器（TIM1和TIM8）、通用定时器（TIM2、TIM3、TIM4、TIM5）以及基本定时器（TIM6和TIM7）。在本例中，我们可能会选择一个通用定时器，如TIM2，因为它具有丰富的功能，可以配置为向上计数、向下计数或中心对齐模式，并支持中断。 1. **配置定时器**： - 我们需要开启定时器的时钟，这可以通过修改RCC（Reset and Clock Control）寄存器实现。 - 然后，选择合适的定时器工作模式，通常选择向上计数模式。 - 设置预分频器，预分频器用于将系统时钟频率分频，以适应所需的定时精度。例如，如果系统时钟为72MHz，可以设置预分频器为71999，使得定时器的计数频率为1kHz，即每个周期为1ms。 2. **设置重载值**： - 重载值是定时器到达的上限值，当计数值达到这个值时，会产生更新事件。若要实现1ms延时，重载值应设置为预分频后的周期数（即1000）。 3. **启用中断**： - 配置中断源，即使能定时器更新事件（TIMx_Update_IRQn）的中断。 - 在NVIC（Nested Vectored Interrupt Controller）设置中断优先级。 4. **中断服务函数**： - 编写TIMx_Update_IRQHandler()中断服务函数，当定时器达到重载值时，该函数会被调用。 - 在中断服务函数中，可以增加计数器，每接收到一次中断，计数器加1。当计数器达到指定的毫秒数时，结束延时并清除中断标志。 5. **HAL库的使用**： - STM32 HAL库（Hardware Abstraction Layer）提供了更高级别的抽象，简化了硬件操作。使用HAL库配置定时器，可以调用`HAL_TIM_Base_Init()`初始化定时器，`HAL_TIM_Base_Start_IT()`启动定时器并使能中断。 - 中断发生时，HAL库会自动调用用户定义的回调函数`HAL_TIM_PeriodElapsedCallback()`，在这里执行实际的延时处理。 6. **延迟函数`delay_ms()`**： - 创建一个全局变量用于计数，每次中断时更新。 - 在`delay_ms()`函数中，设置计数器目标值，然后启动定时器。当计数器达到目标值时，表明延时完成。总结，通过以上步骤，我们可以利用STM32F103C8的定时器中断功能，结合HAL库，实现精确的毫秒级延时。这种方法比简单的忙等待方法更节省CPU资源，且在高精度延时需求下更为可靠。在实际项目中，还可以根据具体需求对定时器配置进行调整，如增加多个定时器以实现多个不同延时任务，或者优化中断服务函数以提高系统响应速度。

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STM32F103C8通过定时器中断实现精确毫秒延时（951个子文件）

iar_cortexM3b_math.a 2.72MB

iar_cortexM3l_math.a 2.71MB

libarm_cortexM3l_math.a 2.56MB

delay.axf 503KB

arm_linear_interp_data.c 4.12MB

arm_common_tables.c 987KB

arm_dct4_init_f32.c 809KB

arm_dct4_init_q31.c 637KB

arm_dct4_init_q15.c 494KB

arm_rfft_init_f32.c 341KB

arm_rfft_init_q31.c 326KB

transform_tests_common_data.c 273KB

arm_rfft_init_q15.c 252KB

stm32f1xx_hal_i2c.c 246KB

stm32f1xx_hal_tim.c 242KB

stm32f1xx_hal_uart.c 132KB

stm32f1xx_hal_spi.c 128KB

stm32f1xx_hal_usart.c 100KB

stm32f1xx_hal_sd.c 100KB

stm32f1xx_hal_irda.c 95KB

stm32f1xx_hal_mmc.c 93KB

stm32f1xx_hal_adc.c 93KB

stm32f1xx_hal_smartcard.c 85KB

stm32f1xx_hal_can.c 81KB

stm32f1xx_hal_tim_ex.c 79KB

stm32f1xx_hal_eth.c 79KB

stm32f1xx_ll_usb.c 77KB

stm32f1xx_hal_nand.c 75KB

stm32f1xx_hal_pcd.c 69KB

filtering_test_common_data.c 64KB

stm32f1xx_hal_i2s.c 63KB

stm32f1xx_hal_rtc.c 59KB

arm_cfft_radix4_q15.c 55KB

stm32f1xx_hal_adc_ex.c 52KB

stm32f1xx_ll_sdmmc.c 50KB

stm32f1xx_hal_rcc.c 49KB

stm32f1xx_hal_hcd.c 48KB

stm32f1xx_hal_dac.c 47KB

stm32f1xx_hal_nor.c 47KB

stm32f1xx_ll_tim.c 45KB

arm_fft_bin_data.c 43KB

arm_conv_partial_fast_q15.c 43KB

stm32f1xx_ll_adc.c 41KB

arm_cfft_radix4_q31.c 39KB

stm32f1xx_ll_fsmc.c 39KB

arm_conv_fast_q15.c 38KB

arm_correlate_fast_q15.c 36KB

stm32f1xx_hal_flash_ex.c 36KB

arm_cfft_radix4_f32.c 34KB

stm32f1xx_hal_sram.c 34KB

controller_test_common_data.c 33KB

stm32f1xx_ll_utils.c 31KB

stm32f1xx_hal_cec.c 31KB

stm32f1xx_hal_pccard.c 30KB

stm32f1xx_hal_rcc_ex.c 30KB

stm32f1xx_hal_flash.c 30KB

arm_fir_f32.c 28KB

stm32f1xx_hal_dma.c 28KB

fir_tests.c 26KB

fast_math_tests_common_data.c 26KB

conv_tests.c 25KB

arm_conv_partial_q15.c 25KB

arm_correlate_q7.c 24KB

arm_conv_partial_q7.c 24KB

arm_graphic_equalizer_example_q31.c 23KB

biquad.c 23KB

arm_correlate_f32.c 22KB

arm_mat_inverse_f64.c 22KB

arm_mat_inverse_f32.c 22KB

arm_correlate_q15.c 22KB

lms.c 22KB

arm_biquad_cascade_stereo_df2T_f32.c 22KB

intrinsics_tests_common_data.c 22KB

arm_conv_q15.c 21KB

stm32f1xx_hal_gpio.c 21KB

stm32f1xx_hal_pwr.c 21KB

arm_conv_partial_f32.c 21KB

arm_conv_q7.c 21KB

arm_fir_q15.c 21KB

arm_conv_partial_fast_opt_q15.c 21KB

arm_conv_partial_fast_q31.c 21KB

arm_conv_partial_opt_q7.c 21KB

stm32f1xx_hal.c 20KB

arm_correlate_q31.c 20KB

arm_conv_partial_opt_q15.c 20KB

stm32f1xx_ll_spi.c 20KB

arm_biquad_cascade_df1_32x64_q31.c 20KB

arm_signal_converge_data.c 20KB

arm_correlate_fast_q31.c 19KB

arm_conv_partial_q31.c 19KB

stm32f1xx_hal_cortex.c 19KB

arm_conv_f32.c 19KB

arm_fir_interpolate_f32.c 18KB

arm_fir_decimate_q15.c 18KB

arm_conv_fast_q31.c 18KB

arm_cfft_f32.c 18KB

arm_depthwise_separable_conv_HWC_q7_nonsquare.c 18KB

stm32f1xx_ll_rtc.c 17KB

arm_biquad_cascade_df2T_f64.c 17KB

arm_biquad_cascade_df2T_f32.c 17KB

共 951 条

      /* ----------------------------------------------------------------------   
* Copyright (C) 2010-2012 ARM Limited. All rights reserved.   
*   
* $Date:        17. January 2013  
* $Revision: 	V1.4.0   
*   
* Project: 	    CMSIS DSP Library   
* Title:	     	arm_linear_interp_data.c
*   
* Description:	 Data file used for example.  Generation method described
*               below
*   
* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0
*  
* Redistribution and use in source and binary forms, with or without 
* modification, are permitted provided that the following conditions
* are met:
*   - Redistributions of source code must retain the above copyright
*     notice, this list of conditions and the following disclaimer.
*   - 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.
*   - Neither the name of ARM LIMITED 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 OWNER 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.  
 * -------------------------------------------------------------------- */
 
/* ---------------------------------------------------------------------- 
* Table generated from following MATLAB Command
* x = -pi: 0.00005 : (2*pi - 0.00005);
* y = sin(x);
* where pi value is 3.141592653589793
* --------------------------------------------------------------------*/

float arm_linear_interep_table[188495] =  {


-0.000000000000000122,	-0.000049999999979173,	-0.000099999999833667,	-0.000149999999437717,	-0.000199999998666767,	-0.000249999997395817,	-0.000299999995500311,	-0.000349999992854362,	
-0.000399999989333412,	-0.000449999984812462,	-0.000499999979166956,	-0.000549999972271007,	-0.000599999964000057,	-0.000649999954229107,	-0.000699999942833602,	-0.000749999929687653,	
-0.000799999914666704,	-0.000849999897645755,	-0.000899999878500250,	-0.000949999857104302,	-0.000999999833333354,	-0.001049999807062851,	-0.001099999778166904,	-0.001149999746520957,	
-0.001199999712000011,	-0.001249999674479510,	-0.001299999633833566,	-0.001349999589937622,	-0.001399999542666680,	-0.001449999491896183,	-0.001499999437500243,	-0.001549999379354304,	
-0.001599999317333367,	-0.001649999251312876,	-0.001699999181166942,	-0.001749999106771011,	-0.001799999028000082,	-0.001849998944729599,	-0.001899998856833675,	-0.001949998764187754,	
-0.001999998666666836,	-0.002049998564146365,	-0.002099998456500453,	-0.002149998343604546,	-0.002199998225334087,	-0.002249998101563188,	-0.002299997972167294,	-0.002349997837021405,	
-0.002399997696000966,	-0.002449997548980088,	-0.002499997395834216,	-0.002549997236438351,	-0.002599997070667937,	-0.002649996898397086,	-0.002699996719501243,	-0.002749996533855408,	
-0.002799996341335026,	-0.002849996141814208,	-0.002899995935168401,	-0.002949995721272604,	-0.002999995500002261,	-0.003049995271231486,	-0.003099995034835722,	-0.003149994790690415,	
-0.003199994538669677,	-0.003249994278648952,	-0.003299994010503243,	-0.003349993734107991,	-0.003399993449337312,	-0.003449993156066649,	-0.003499992854171003,	-0.003549992543525819,	
-0.003599992224005209,	-0.003649991895484619,	-0.003699991557839049,	-0.003749991210943944,	-0.003799990854673418,	-0.003849990488902914,	-0.003899990113507434,	-0.003949989728362423,	
-0.003999989333341993,	-0.004049988928321590,	-0.004099988513176658,	-0.004149988087781312,	-0.004199987652010995,	-0.004249987205740709,	-0.004299986748845899,	-0.004349986281200678,	
-0.004399985802680492,	-0.004449985313160341,	-0.004499984812515671,	-0.004549984300620594,	-0.004599983777350557,	-0.004649983242580561,	-0.004699982696186050,	-0.004749982138041138,	
-0.004799981568021272,	-0.004849980986001451,	-0.004899980391857122,	-0.004949979785462398,	-0.004999979166692725,	-0.005049978535423547,	-0.005099977891528979,	-0.005149977234884466,	
-0.005199976565365011,	-0.005249975882846058,	-0.005299975187201721,	-0.005349974478307446,	-0.005399973756038235,	-0.005449973020269535,	-0.005499972270875456,	-0.005549971507731448,	
-0.005599970730712511,	-0.005649969939694091,	-0.005699969134550302,	-0.005749968315156590,	-0.005799967481387958,	-0.005849966633119851,	-0.005899965770226383,	-0.005949964892583000,	
-0.005999964000064706,	-0.006049963092546945,	-0.006099962169903833,	-0.006149961232010816,	-0.006199960278743339,	-0.006249959309975518,	-0.006299958325582797,	-0.006349957325440182,	
-0.006399956309423117,	-0.006449955277405718,	-0.006499954229263430,	-0.006549953164871257,	-0.006599952084104644,	-0.006649950986837708,	-0.006699949872945895,	-0.006749948742304206,	
-0.006799947594788089,	-0.006849946430271660,	-0.006899945248630365,	-0.006949944049739206,	-0.006999942833473632,	-0.007049941599707755,	-0.007099940348317025,	-0.007149939079176889,	
-0.007199937792161461,	-0.007249936487146187,	-0.007299935164006074,	-0.007349933822616566,	-0.007399932462851779,	-0.007449931084587162,	-0.007499929687697716,	-0.007549928272058891,	
-0.007599926837544801,	-0.007649925384030893,	-0.007699923911392173,	-0.007749922419504085,	-0.007799920908240749,	-0.007849919377477610,	-0.007899917827089672,	-0.007949916256952384,	
-0.007999914666939863,	-0.008049913056927554,	-0.008099911426790906,	-0.008149909776404035,	-0.008199908105642390,	-0.008249906414380975,	-0.008299904702495238,	-0.008349902969859295,	
-0.008399901216348595,	-0.008449899441838141,	-0.008499897646203384,	-0.008549895829318437,	-0.008599893991058752,	-0.008649892131299332,	-0.008699890249915625,	-0.008749888346781748,	
-0.008799886421773151,	-0.008849884474764837,	-0.008899882505632256,	-0.008949880514249525,	-0.008999878500492093,	-0.009049876464234965,	-0.009099874405353590,	-0.009149872323722084,	
-0.009199870219215898,	-0.009249868091710479,	-0.009299865941079948,	-0.009349863767199750,	-0.009399861569944894,	-0.009449859349190827,	-0.009499857104811669,	-0.009549854836682867,	
-0.009599852544679429,	-0.009649850228676803,	-0.009699847888549109,	-0.009749845524171793,	-0.009799843135419864,	-0.009849840722168771,	-0.009899838284292632,	-0.009949835821666898,	
-0.009999833334166574,	-0.010049830821667110,	-0.010099828284042626,	-0.010149825721168572,	-0.010199823132920397,	-0.010249820519172219,	-0.010299817879799491,	-0.010349815214677217,	
-0.010399812523680850,	-0.010449809806684508,	-0.010499807063563642,	-0.010549804294193258,	-0.010599801498448806,	-0.010649798676204407,	-0.010699795827335511,	-0.010749792951717126,	
-0.010799790049224703,	-0.010849787119732359,	-0.010899784163115548,	-0.010949781179249277,	-0.010999778168008997,	-0.011049775129268828,	-0.011099772062904221,	-0.011149768968790628,	
-0.011199765846802169,	-0.011249762696814294,	-0.011299759518702013,	-0.011349756312340777,	-0.011399753077604706,	-0.011449749814369253,	-0.011499746522509425,	-0.011549743201900674,	
-0.011599739852417123,	-0.011649736473934221,	-0.011699733066326979,	-0.011749729629470847,	-0.011799726163239948,	-0.011849722667509732,	-0.011899719142155211,	-0.011949715587051834,	
-0.011999712002073