{"id":62958,"date":"2026-01-21T01:34:41","date_gmt":"2026-01-20T17:34:41","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/62958.html"},"modified":"2026-01-21T01:34:41","modified_gmt":"2026-01-20T17:34:41","slug":"stm32f103%e6%a0%87%e5%87%86%e5%ba%93%e5%b5%8c%e5%85%a5%e5%bc%8f%e6%a8%a1%e6%8b%9f%e5%b9%b3%e5%8f%b0systick%e7%b3%bb%e7%bb%9f%e6%bb%b4%e7%ad%94%e5%ae%9a%e6%97%b6%e5%99%a8%e5%ae%9e%e9%aa%8c","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/62958.html","title":{"rendered":"[STM32F103\u6807\u51c6\u5e93]\u5d4c\u5165\u5f0f\u6a21\u62df\u5e73\u53f0SYSTICK\u7cfb\u7edf\u6ef4\u7b54\u5b9a\u65f6\u5668\u5b9e\u9a8c"},"content":{"rendered":"

\u672c\u6b21\u5b9e\u9a8c\u7528\u5230\u5d4c\u5165\u5f0f\u4eff\u771f\u6559\u5b66\u5b9e\u9a8c\u5e73\u53f0：\u5d4c\u5165\u5f0f\u4eff\u771f\u5b9e\u9a8c\u6559\u5b66\u5e73\u53f0<\/p>\n

\n

SysTick\u7b80\u4ecb<\/span><\/span><\/p>\n

\u00a0 SysTick\u5c5e\u4e8eCM3 \u5185\u6838\u4e2d\u7684\u4e00\u4e2a\u5916\u8bbe，\u5185\u5d4c\u5728NVIC\u4e2d，\u662f\u4e00\u4e2a24bit\u7684\u5411\u4e0b\u9012\u51cf\u7684\u8ba1\u6570\u5668，\u8ba1\u6570\u5668\u6bcf\u8ba1\u6570\u4e00\u6b21\u7684\u65f6\u95f4\u4e3a1\/SYSCLK\u3002<\/span><\/span><\/p>\n

\u00a0 \u4e00\u822c\u6211\u4eec\u8bbe\u7f6e\u7cfb\u7edf\u65f6\u949fSYSCLK\u7b49\u4e8e72M，\u5f53\u91cd\u88c5\u8f7d\u6570\u503c\u5bc4\u5b58\u5668\u7684\u503c\u9012\u51cf\u5230 0 \u7684\u65f6\u5019，\u7cfb\u7edf\u5b9a\u65f6\u5668\u5c31\u4ea7\u751f\u4e00\u6b21\u4e2d\u65ad，\u4ee5\u6b64\u5faa\u73af\u5f80\u590d\u3002<\/span><\/span><\/p>\n

\u00a0 \u56e0\u4e3aSysTick \u662f\u5c5e\u4e8eCM3 \u5185\u6838\u7684\u5916\u8bbe，\u6240\u4ee5\u6240\u6709\u57fa\u4e8eCM3 \u5185\u6838\u7684\u5355\u7247\u673a\u90fd\u5177\u6709\u8fd9\u4e2a\u7cfb\u7edf\u5b9a\u65f6\u5668，\u4f7f\u5f97\u8f6f\u4ef6\u5728CM3 \u5355\u7247\u673a\u4e2d\u53ef\u4ee5\u5f88\u5bb9\u6613\u7684\u79fb\u690d\u3002<\/span><\/span><\/p>\n

\u00a0 \u7cfb\u7edf\u5b9a\u65f6\u5668\u4e00\u822c\u7528\u4e8e\u64cd\u4f5c\u7cfb\u7edf，\u7528\u4e8e\u4ea7\u751f\u65f6\u57fa，\u7ef4\u6301\u64cd\u4f5c\u7cfb\u7edf\u7684\u5fc3\u8df3\u3002<\/span><\/span><\/p>\n

\u4f7f\u7528\u5230\u7684\u5173\u952e\u51fd\u6570（\u6807\u51c6\u5e93\u7248\u672c）<\/span><\/span><\/p>\n

1.SysTick_Config() <\/p>\n

（\u5b83\u4f1a\u6839\u636e\u4f20\u5165\u7684\u53c2\u6570\u8bbe\u7f6e SysTick \u7684\u91cd\u8f7d\u503c（RELOAD \u5bc4\u5b58\u5668），\u5f53 SysTick \u5b9a\u65f6\u5668\u4ece\u91cd\u8f7d\u503c\u9012\u51cf\u5230 0 \u65f6，\u5c31\u4f1a\u89e6\u53d1\u4e00\u6b21 SysTick \u4e2d\u65ad，\u540c\u65f6\u81ea\u52a8\u91cd\u88c5\u6570\u503c\u7ee7\u7eed\u8ba1\u6570\u3002）<\/p>\n

\u4e2d\u65ad\u5468\u671f\u7684\u8ba1\u7b97\u516c\u5f0f = \u91cd\u8f7d\u503c \/ \u7cfb\u7edf\u6838\u5fc3\u65f6\u949f\u9891\u7387(SystemCoreClock)<\/span><\/p>\n

\u51fd\u6570\u539f\u578b\u4e3a：<\/p>\n

static __INLINE uint32_t SysTick_Config(uint32_t ticks)
\n{
\n if (ticks > SysTick_LOAD_RELOAD_Msk) return (1); \/* Reload value impossible *\/<\/p>\n

SysTick->LOAD = (ticks & SysTick_LOAD_RELOAD_Msk) – 1; \/* \u8bbe\u7f6e\u91cd\u88c5\u8f7d\u5bc4\u5b58\u5668\u7684\u503c *\/
\n NVIC_SetPriority (SysTick_IRQn, (1<<__NVIC_PRIO_BITS) – 1); \/* \u8bbe\u7f6e Cortex-M0 \u5185\u6838\u7684\u7cfb\u7edf\u4e2d\u65ad\u8bbe\u7f6e\u4f18\u5148\u7ea7 *\/
\n SysTick->VAL = 0; \/* \u52a0\u8f7d SysTick \u8ba1\u6570\u5668\u6570\u503c *\/
\n SysTick->CTRL = SysTick_CTRL_CLKSOURCE_Msk |
\n SysTick_CTRL_TICKINT_Msk |
\n SysTick_CTRL_ENABLE_Msk; \/* \u542f\u52a8\u6ef4\u7b54\u5b9a\u65f6\u5668\u4e2d\u65ad\u53ca\u6ef4\u7b54\u5b9a\u65f6\u5668*\/
\n return (0); \/* Function successful *\/
\n} <\/p>\n

2.SysTick_Handler() \u6ef4\u7b54\u5b9a\u65f6\u5668\u7684\u4e2d\u65ad\u670d\u52a1\u51fd\u6570<\/p>\n

\u6211\u4eec\u8981\u5b9e\u73b0\u7684LED\u7ffb\u8f6c\u529f\u80fd\u5c31\u7f16\u5199\u5728\u8fd9\u4e2a\u51fd\u6570\u5f53\u4e2d\u3002<\/p>\n

\u51c6\u5907\u5de5\u4f5c\u5c31\u7eea \u6211\u4eec\u5f00\u59cb \u539f\u795e \u542f\u52a8！<\/p>\n

\u6a21\u62df\u7535\u8def\u5982\u56fe \u6211\u4eec\u7684\u76ee\u7684\u662f\u4f7f\u7528\u6ef4\u7b54\u5b9a\u65f6\u5668\u5b9e\u73b0 LED\u706f\u7684\u91cd\u590d\u70b9\u4eae \u7184\u706d \u5f00\u59cb\u7f16\u5199\u4ee3\u7801<\/p>\n

\"\"<\/p>\n

\u4e3b\u51fd\u6570\u4ee3\u7801\u5982\u4e0b：<\/p>\n

#include "sys.h"
\n#include "stm32f10x_conf.h"
\n#include "delay.h"
\n#include "led.h"
\n#include "system_stm32f10x.h"<\/p>\n

int main(void)
\n{
\n SysTick_Config(SystemCoreClock\/10);\/*\u6839\u636e\u516c\u5f0f\u8ba1\u7b97 \u6ef4\u7b54\u5b9a\u65f6\u5668
\n \u8fdb\u5165\u4e2d\u65ad\u5468\u671f\u7684\u65f6\u95f4\u4e3a 100ms*\/
\n LED_Init();
\n while(1)
\n {
\n }
\n}
\nvoid SysTick_Handler(void)
\n{
\n LED = !LED;\/\/LED\u7535\u5e73\u7ffb\u8f6c
\n} <\/p>\n

led.c\u4ee5\u53ca.h\u4ee3\u7801\u5982\u4e0b<\/p>\n

#include "stm32f10x.h"
\n#include "led.h"<\/p>\n

\/\/ \u521d\u59cb\u5316 PA12 \u7528\u4e8e\u63a7\u5236 LED
\nvoid LED_Init(void)
\n{
\n GPIO_InitTypeDef GPIO_InitStructure;<\/p>\n

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); <\/p>\n

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
\n GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
\n GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
\n GPIO_Init(GPIOA, &GPIO_InitStructure);
\n GPIO_SetBits(GPIOA,GPIO_Pin_12); <\/p>\n

}<\/p>\n

#ifndef __LED_H
\n#define __LED_H
\n#include "stm32f10x.h"<\/p>\n

\/\/ LED \u8f93\u51fa\u5b8f\u5b9a\u4e49
\n#define LED PAout(12) \/\/ PA12<\/p>\n

\/\/ \u521d\u59cb\u5316 PA12 \u7528\u4e8e\u63a7\u5236 LED
\nvoid LED_Init(void);<\/p>\n

#endif <\/p>\n

\u7f16\u8bd1 \u8fd0\u884c \u73b0\u8c61\u5982\u56fe<\/p>\n

\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

\u672c\u6b21\u5b9e\u9a8c\u7528\u5230\u5d4c\u5165\u5f0f\u4eff\u771f\u6559\u5b66\u5b9e\u9a8c\u5e73\u53f0：\u5d4c\u5165\u5f0f\u4eff\u771f\u5b9e\u9a8c\u6559\u5b66\u5e73\u53f0 SysTick\u7b80\u4ecb SysTick\u5c5e\u4e8eCM3 \u5185\u6838\u4e2d\u7684\u4e00\u4e2a\u5916\u8bbe，\u5185\u5d4c\u5728NVIC\u4e2d，\u662f\u4e00\u4e2a24bit\u7684\u5411\u4e0b\u9012\u51cf\u7684\u8ba1\u6570\u5668，\u8ba1\u6570\u5668\u6bcf\u8ba1\u6570\u4e00\u6b21\u7684\u65f6\u95f4\u4e3a1\/SYSCLK\u3002 \u4e00\u822c\u6211\u4eec\u8bbe\u7f6e\u7cfb\u7edf\u65f6\u949fSYSCLK\u7b49\u4e8e72M，\u5f53\u91cd\u88c5\u8f7d\u6570\u503c\u5bc4\u5b58\u5668\u7684\u503c\u9012\u51cf\u5230 0 \u7684\u65f6\u5019，\u7cfb\u7edf\u5b9a\u65f6\u5668\u5c31\u4ea7\u751f\u4e00\u6b21\u4e2d\u65ad，\u4ee5\u6b64\u5faa\u73af\u5f80\u590d\u3002 \u56e0\u4e3aSysTick \u662f\u5c5e\u4e8eCM3<\/p>\n","protected":false},"author":2,"featured_media":62956,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[217,270,269],"topic":[],"class_list":["post-62958","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-stm32","tag-270","tag-269"],"yoast_head":"\n[STM32F103\u6807\u51c6\u5e93]\u5d4c\u5165\u5f0f\u6a21\u62df\u5e73\u53f0SYSTICK\u7cfb\u7edf\u6ef4\u7b54\u5b9a\u65f6\u5668\u5b9e\u9a8c - 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