{"id":33646,"date":"2025-04-28T10:46:46","date_gmt":"2025-04-28T02:46:46","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/33646.html"},"modified":"2025-04-28T10:46:46","modified_gmt":"2025-04-28T02:46:46","slug":"stm32week7","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/33646.html","title":{"rendered":"stm32week7"},"content":{"rendered":"

stm32\u5b66\u4e60<\/h2>\n

\u4e09.\u901a\u4fe1<\/h3>\n

10.BKP\u548cRTC<\/h4>\n

BKP(backup registers)\u5907\u4efd\u5bc4\u5b58\u5668 BKP\u53ef\u4ee5\u5b58\u50a8\u6570\u636e，\u6389\u7535\u4e22\u5931，\u5e73\u65f6\u7528\u5916\u90e8\u7535\u6e90\u4f9b\u7535，\u5916\u90e8\u7535\u6e90\u5207\u65ad\u540e\u7528VBAT\u7ef4\u6301\u4f9b\u7535，\u5f53\u7cfb\u7edf\u5728\u5f85\u673a\u72b6\u6001\u4e0b\u88ab\u5524\u9192，\u6216\u7cfb\u7edf\u590d\u4f4d\u6216\u7535\u6e90\u590d\u4f4d\u65f6，\u5b83\u4eec\u4e5f\u4e0d\u4f1a\u88ab\u590d\u4f4d TAMPER\u5f15\u811a\u53ef\u4ee5\u4ea7\u751f\u7684\u4fb5\u5165\u4e8b\u4ef6，\u5c06\u6240\u6709\u5907\u4efd\u5bc4\u5b58\u5668\u7684\u5185\u5bb9\u6e05\u9664 RTC\u5f15\u811a\u53ef\u4ee5\u8f93\u51faRTC\u6821\u51c6\u65f6\u949f(\u5bf9\u5185\u90e8RTC\u5fae\u5c0f\u7684\u8bef\u5dee\u8fdb\u884c\u6821\u51c6)\u3001RTC\u95f9\u949f\u8109\u51b2\u3001\u79d2\u8109\u51b2(\u53ef\u4ee5\u8f93\u51fa\u51fa\u6765，\u4e3a\u522b\u7684\u8bbe\u5907\u63d0\u4f9b\u4fe1\u53f7) PC13\u3001TAMPER\u3001RTC\u5171\u7528\u4e00\u4e2a\u5f15\u811a，\u540c\u65f6\u53ea\u80fd\u4f7f\u7528\u4e00\u4e2a\u529f\u80fd \u5b58\u50a8RTC\u65f6\u949f\u6821\u51c6\u5bc4\u5b58\u5668，\u8054\u5408RTC\u6821\u51c6\u65f6\u949f，\u5bf9RTC\u8fdb\u884c\u6821\u51c6 \u7528\u6237\u6570\u636e\u5b58\u50a8\u5bb9\u91cf：20\u5b57\u8282(\u4e2d\u5bb9\u91cf\u548c\u5c0f\u5bb9\u91cf)\/84\u5b57\u8282(\u5927\u5bb9\u91cf\u548c\u4e92\u8054\u578b)<\/p>\n

\"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

RTC\u5b9e\u65f6\u65f6\u949f，\u662f\u4e00\u4e2a\u72ec\u7acb\u7684\u5b9a\u65f6\u5668，\u53ef\u4e3a\u7cfb\u7edf\u63d0\u4f9b\u65f6\u949f\u548c\u65e5\u5386\u7684\u529f\u80fd RTC\u548c\u65f6\u949f\u914d\u7f6e\u7cfb\u7edf\u5904\u4e8e\u540e\u5907\u533a\u57df，\u7cfb\u7edf\u590d\u4f4d\u65f6\u6570\u636e\u4e0d\u6e05\u96f6，VDD\u65ad\u7535\u540e\u53ef\u501f\u52a9VBAT\u4f9b\u7535 32\u4f4d\u7684\u53ef\u7f16\u7a0b\u8ba1\u6570\u5668，\u53ef\u5bf9\u5e94Unix\u65f6\u95f4\u6233\u7684\u79d2\u8ba1\u6570\u5668 20\u4f4d\u7684\u53ef\u7f16\u7a0b\u9884\u5206\u9891\u5668，\u53ef\u9002\u914d\u4e0d\u540c\u9891\u7387\u7684\u8f93\u5165\u65f6\u949f \u53ef\u9009\u62e9\u7684\u4e09\u79cdRTC\u65f6\u949f\u6e90：<\/p>\n

  • HSE\u65f6\u949f(\u9664\u4ee5128，\u56e0\u4e3a\u672c\u8eab8MHz，\u9884\u5206\u9891\u4e0d\u591f\u7528)<\/li>\n
  • LSE\u632f\u8361\u5668\u65f6\u949f(32.768kHz)<\/li>\n
  • LSI\u632f\u8361\u5668\u65f6\u949f(40kHz)<\/li>\n

    RTC\u6846\u56fe：<\/p>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    RTC\u57fa\u672c\u7ed3\u6784：<\/p>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    \u786c\u4ef6\u7535\u8def：<\/p>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    RTC\u64cd\u4f5c\u6ce8\u610f\u4e8b\u9879：<\/p>\n

  • \u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\u5c06\u4f7f\u80fd\u5bf9BKP\u548cRTC\u7684\u8bbf\u95ee\n
  • \u8bbe\u7f6eRCC_APB1ENR\u7684PWREN\u548cBKPEN，\u4f7f\u80fdPWR\u548cBKP\u65f6\u949f<\/li>\n
  • \u8bbe\u7f6ePWR_CR\u7684DBP，\u4f7f\u80fd\u5bf9BKP\u548cRTC\u7684\u8bbf\u95ee<\/li>\n<\/li>\n
  • \u82e5\u5728\u8bfb\u53d6RTC\u5bc4\u5b58\u5668\u65f6，RTC\u7684APB1\u63a5\u53e3\u66fe\u7ecf\u5904\u4e8e\u7981\u6b62\u72b6\u6001，\u5219\u8f6f\u4ef6\u9996\u5148\u5fc5\u987b\u7b49\u5f85RTC_CRL\u5bc4\u5b58\u5668\u4e2d\u7684RSF\u4f4d(\u5bc4\u5b58\u5668\u540c\u6b65\u6807\u5fd7)\u88ab\u786c\u4ef6\u7f6e1<\/li>\n
  • \u5fc5\u987b\u8bbe\u7f6eRTC_CRL\u5bc4\u5b58\u5668\u4e2d\u7684CNF\u4f4d，\u4f7fRTC\u8fdb\u5165\u914d\u7f6e\u6a21\u5f0f\u540e，\u624d\u80fd\u5199\u5165RTC_PRL\u3001RTC_CNT\u3001RTC_ALR\u5bc4\u5b58\u5668<\/li>\n
  • \u5bf9RTC\u4efb\u4f55\u5bc4\u5b58\u5668\u7684\u5199\u64cd\u4f5c，\u90fd\u5fc5\u987b\u5728\u524d\u4e00\u6b21\u5199\u64cd\u4f5c\u7ed3\u675f\u540e\u8fdb\u884c\u3002\u53ef\u4ee5\u901a\u8fc7\u67e5\u8be2RTC_CR\u5bc4\u5b58\u5668\u4e2d\u7684RTOFF\u72b6\u6001\u4f4d，\u5224\u65adRTC\u5bc4\u5b58\u5668\u662f\u5426\u5904\u4e8e\u66f4\u65b0\u4e2d\u3002\u4ec5\u5f53RTOFF\u72b6\u6001\u4f4d\u662f1\u65f6，\u624d\u53ef\u4ee5\u5199\u5165RTC\u5bc4\u5b58\u5668<\/li>\n

    \u8bfb\u5199\u5907\u4efd\u5bc4\u5b58\u5668\u7684\u521d\u59cb\u5316\u53ea\u9700\u8981<\/p>\n

    \/*\u5f00\u542f\u65f6\u949f*\/
    \n RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); \/\/\u5f00\u542fPWR\u7684\u65f6\u949f
    \n RCC_APB1PeriphClockCmd(RCC_APB1Periph_BKP, ENABLE); \/\/\u5f00\u542fBKP\u7684\u65f6\u949f<\/p>\n

    \/*\u5907\u4efd\u5bc4\u5b58\u5668\u8bbf\u95ee\u4f7f\u80fd*\/
    \n PWR_BackupAccessCmd(ENABLE); \/\/\u4f7f\u7528PWR\u5f00\u542f\u5bf9\u5907\u4efd\u5bc4\u5b58\u5668\u7684\u8bbf\u95ee<\/p>\n

    \u7136\u540e\u5c31\u53ef\u4ee5\u7528BKP_ReadBackupRegister\u548cBKP_WriteBackupRegister\u6765\u8bfb\u5199\u5bc4\u5b58\u5668<\/p>\n

    RTC\u521d\u59cb\u5316\u548cRTC\u8bfb\u5199\u65f6\u95f4\u7684\u51fd\u6570：<\/p>\n

    #include "stm32f10x.h" \/\/ Device header
    \n#include <time.h><\/p>\n

    uint16_t MyRTC_Time[] = {2023, 1, 1, 23, 59, 55}; \/\/\u5b9a\u4e49\u5168\u5c40\u7684\u65f6\u95f4\u6570\u7ec4，\u6570\u7ec4\u5185\u5bb9\u5206\u522b\u4e3a\u5e74\u3001\u6708\u3001\u65e5\u3001\u65f6\u3001\u5206\u3001\u79d2<\/p>\n

    void MyRTC_SetTime(void); \/\/\u51fd\u6570\u58f0\u660e<\/p>\n

    \/**
    \n * \u51fd \u6570：RTC\u521d\u59cb\u5316
    \n * \u53c2 \u6570：\u65e0
    \n * \u8fd4 \u56de \u503c：\u65e0
    \n *\/
    \nvoid MyRTC_Init(void)
    \n{
    \n \/*\u5f00\u542f\u65f6\u949f*\/
    \n RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); \/\/\u5f00\u542fPWR\u7684\u65f6\u949f
    \n RCC_APB1PeriphClockCmd(RCC_APB1Periph_BKP, ENABLE); \/\/\u5f00\u542fBKP\u7684\u65f6\u949f<\/p>\n

    \/*\u5907\u4efd\u5bc4\u5b58\u5668\u8bbf\u95ee\u4f7f\u80fd*\/
    \n PWR_BackupAccessCmd(ENABLE); \/\/\u4f7f\u7528PWR\u5f00\u542f\u5bf9\u5907\u4efd\u5bc4\u5b58\u5668\u7684\u8bbf\u95ee<\/p>\n

    if (BKP_ReadBackupRegister(BKP_DR1) != 0xA5A5) \/\/\u901a\u8fc7\u5199\u5165\u5907\u4efd\u5bc4\u5b58\u5668\u7684\u6807\u5fd7\u4f4d，\u5224\u65adRTC\u662f\u5426\u662f\u7b2c\u4e00\u6b21\u914d\u7f6e
    \n \/\/if\u6210\u7acb\u5219\u6267\u884c\u7b2c\u4e00\u6b21\u7684RTC\u914d\u7f6e
    \n {
    \n RCC_LSEConfig(RCC_LSE_ON); \/\/\u5f00\u542fLSE\u65f6\u949f
    \n while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) != SET); \/\/\u7b49\u5f85LSE\u51c6\u5907\u5c31\u7eea<\/p>\n

    RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE); \/\/\u9009\u62e9RTCCLK\u6765\u6e90\u4e3aLSE
    \n RCC_RTCCLKCmd(ENABLE); \/\/RTCCLK\u4f7f\u80fd<\/p>\n

    RTC_WaitForSynchro(); \/\/\u7b49\u5f85\u540c\u6b65
    \n RTC_WaitForLastTask(); \/\/\u7b49\u5f85\u4e0a\u4e00\u6b21\u64cd\u4f5c\u5b8c\u6210<\/p>\n

    RTC_SetPrescaler(32768 – 1); \/\/\u8bbe\u7f6eRTC\u9884\u5206\u9891\u5668，\u9884\u5206\u9891\u540e\u7684\u8ba1\u6570\u9891\u7387\u4e3a1Hz
    \n RTC_WaitForLastTask(); \/\/\u7b49\u5f85\u4e0a\u4e00\u6b21\u64cd\u4f5c\u5b8c\u6210<\/p>\n

    MyRTC_SetTime(); \/\/\u8bbe\u7f6e\u65f6\u95f4，\u8c03\u7528\u6b64\u51fd\u6570，\u5168\u5c40\u6570\u7ec4\u91cc\u65f6\u95f4\u503c\u5237\u65b0\u5230RTC\u786c\u4ef6\u7535\u8def<\/p>\n

    BKP_WriteBackupRegister(BKP_DR1, 0xA5A5); \/\/\u5728\u5907\u4efd\u5bc4\u5b58\u5668\u5199\u5165\u81ea\u5df1\u89c4\u5b9a\u7684\u6807\u5fd7\u4f4d，\u7528\u4e8e\u5224\u65adRTC\u662f\u4e0d\u662f\u7b2c\u4e00\u6b21\u6267\u884c\u914d\u7f6e
    \n }
    \n else \/\/RTC\u4e0d\u662f\u7b2c\u4e00\u6b21\u914d\u7f6e
    \n {
    \n RTC_WaitForSynchro(); \/\/\u7b49\u5f85\u540c\u6b65
    \n RTC_WaitForLastTask(); \/\/\u7b49\u5f85\u4e0a\u4e00\u6b21\u64cd\u4f5c\u5b8c\u6210
    \n }
    \n}<\/p>\n

    \/\/\u5982\u679cLSE\u65e0\u6cd5\u8d77\u632f\u5bfc\u81f4\u7a0b\u5e8f\u5361\u6b7b\u5728\u521d\u59cb\u5316\u51fd\u6570\u4e2d
    \n\/\/\u53ef\u5c06\u521d\u59cb\u5316\u51fd\u6570\u66ff\u6362\u4e3a\u4e0b\u8ff0\u4ee3\u7801，\u4f7f\u7528LSI\u5f53\u4f5cRTCCLK
    \n\/\/LSI\u65e0\u6cd5\u7531\u5907\u7528\u7535\u6e90\u4f9b\u7535，\u6545\u4e3b\u7535\u6e90\u6389\u7535\u65f6，RTC\u8d70\u65f6\u4f1a\u6682\u505c
    \n\/*
    \nvoid MyRTC_Init(void)
    \n{
    \n RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
    \n RCC_APB1PeriphClockCmd(RCC_APB1Periph_BKP, ENABLE);<\/p>\n

    PWR_BackupAccessCmd(ENABLE);<\/p>\n

    if (BKP_ReadBackupRegister(BKP_DR1) != 0xA5A5)
    \n {
    \n RCC_LSICmd(ENABLE);
    \n while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) != SET);<\/p>\n

    RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);
    \n RCC_RTCCLKCmd(ENABLE);<\/p>\n

    RTC_WaitForSynchro();
    \n RTC_WaitForLastTask();<\/p>\n

    RTC_SetPrescaler(40000 – 1);
    \n RTC_WaitForLastTask();<\/p>\n

    MyRTC_SetTime();<\/p>\n

    BKP_WriteBackupRegister(BKP_DR1, 0xA5A5);
    \n }
    \n else
    \n {
    \n RCC_LSICmd(ENABLE); \/\/\u5373\u4f7f\u4e0d\u662f\u7b2c\u4e00\u6b21\u914d\u7f6e，\u4e5f\u9700\u8981\u518d\u6b21\u5f00\u542fLSI\u65f6\u949f
    \n while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) != SET);<\/p>\n

    RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);
    \n RCC_RTCCLKCmd(ENABLE);<\/p>\n

    RTC_WaitForSynchro();
    \n RTC_WaitForLastTask();
    \n }
    \n}*\/<\/p>\n

    \/**
    \n * \u51fd \u6570：RTC\u8bbe\u7f6e\u65f6\u95f4
    \n * \u53c2 \u6570：\u65e0
    \n * \u8fd4 \u56de \u503c：\u65e0
    \n * \u8bf4 \u660e：\u8c03\u7528\u6b64\u51fd\u6570\u540e，\u5168\u5c40\u6570\u7ec4\u91cc\u65f6\u95f4\u503c\u5c06\u5237\u65b0\u5230RTC\u786c\u4ef6\u7535\u8def
    \n *\/
    \nvoid MyRTC_SetTime(void)
    \n{
    \n time_t time_cnt; \/\/\u5b9a\u4e49\u79d2\u8ba1\u6570\u5668\u6570\u636e\u7c7b\u578b
    \n struct tm time_date; \/\/\u5b9a\u4e49\u65e5\u671f\u65f6\u95f4\u6570\u636e\u7c7b\u578b<\/p>\n

    time_date.tm_year = MyRTC_Time[0] – 1900; \/\/\u5c06\u6570\u7ec4\u7684\u65f6\u95f4\u8d4b\u503c\u7ed9\u65e5\u671f\u65f6\u95f4\u7ed3\u6784\u4f53
    \n time_date.tm_mon = MyRTC_Time[1] – 1;
    \n time_date.tm_mday = MyRTC_Time[2];
    \n time_date.tm_hour = MyRTC_Time[3];
    \n time_date.tm_min = MyRTC_Time[4];
    \n time_date.tm_sec = MyRTC_Time[5];<\/p>\n

    time_cnt = mktime(&time_date) – 8 * 60 * 60; \/\/\u8c03\u7528mktime\u51fd\u6570，\u5c06\u65e5\u671f\u65f6\u95f4\u8f6c\u6362\u4e3a\u79d2\u8ba1\u6570\u5668\u683c\u5f0f
    \n \/\/- 8 * 60 * 60\u4e3a\u4e1c\u516b\u533a\u7684\u65f6\u533a\u8c03\u6574<\/p>\n

    RTC_SetCounter(time_cnt); \/\/\u5c06\u79d2\u8ba1\u6570\u5668\u5199\u5165\u5230RTC\u7684CNT\u4e2d
    \n RTC_WaitForLastTask(); \/\/\u7b49\u5f85\u4e0a\u4e00\u6b21\u64cd\u4f5c\u5b8c\u6210
    \n}<\/p>\n

    \/**
    \n * \u51fd \u6570：RTC\u8bfb\u53d6\u65f6\u95f4
    \n * \u53c2 \u6570：\u65e0
    \n * \u8fd4 \u56de \u503c：\u65e0
    \n * \u8bf4 \u660e：\u8c03\u7528\u6b64\u51fd\u6570\u540e，RTC\u786c\u4ef6\u7535\u8def\u91cc\u65f6\u95f4\u503c\u5c06\u5237\u65b0\u5230\u5168\u5c40\u6570\u7ec4
    \n *\/
    \nvoid MyRTC_ReadTime(void)
    \n{
    \n time_t time_cnt; \/\/\u5b9a\u4e49\u79d2\u8ba1\u6570\u5668\u6570\u636e\u7c7b\u578b
    \n struct tm time_date; \/\/\u5b9a\u4e49\u65e5\u671f\u65f6\u95f4\u6570\u636e\u7c7b\u578b<\/p>\n

    time_cnt = RTC_GetCounter() + 8 * 60 * 60; \/\/\u8bfb\u53d6RTC\u7684CNT，\u83b7\u53d6\u5f53\u524d\u7684\u79d2\u8ba1\u6570\u5668
    \n \/\/+ 8 * 60 * 60\u4e3a\u4e1c\u516b\u533a\u7684\u65f6\u533a\u8c03\u6574<\/p>\n

    time_date = *localtime(&time_cnt); \/\/\u4f7f\u7528localtime\u51fd\u6570，\u5c06\u79d2\u8ba1\u6570\u5668\u8f6c\u6362\u4e3a\u65e5\u671f\u65f6\u95f4\u683c\u5f0f<\/p>\n

    MyRTC_Time[0] = time_date.tm_year + 1900; \/\/\u5c06\u65e5\u671f\u65f6\u95f4\u7ed3\u6784\u4f53\u8d4b\u503c\u7ed9\u6570\u7ec4\u7684\u65f6\u95f4
    \n MyRTC_Time[1] = time_date.tm_mon + 1;
    \n MyRTC_Time[2] = time_date.tm_mday;
    \n MyRTC_Time[3] = time_date.tm_hour;
    \n MyRTC_Time[4] = time_date.tm_min;
    \n MyRTC_Time[5] = time_date.tm_sec;
    \n}<\/p>\n

    \u7136\u540e\u5728main.c\u7684while\u91cc\u9762\u8c03\u7528MyRTC_ReadTime\u5c31\u80fd\u8bfb\u53d6\u5b9e\u65f6\u65f6\u949f\u4e86<\/p>\n

    11.PWR<\/h4>\n

    PWR\u7535\u6e90\u63a7\u5236：PWR\u8d1f\u8d23\u7ba1\u7406stm32\u5185\u90e8\u7684\u7535\u6e90\u4f9b\u7535\u90e8\u5206，\u53ef\u4ee5\u5b9e\u73b0\u53ef\u7f16\u7a0b\u7535\u538b\u76d1\u6d4b\u5668\u548c\u4f4e\u529f\u8017\u6a21\u5f0f\u7684\u529f\u80fd \u53ef\u7f16\u7a0b\u7535\u538b\u76d1\u6d4b\u5668(PVD)\u53ef\u4ee5\u76d1\u63a7VDD\u7535\u6e90\u7535\u538b，\u5f53VDD\u4e0b\u964d\u5230PVD\u9608\u503c\u4ee5\u4e0b\u6216\u8005\u4e4b\u4e0a\u65f6，PVD\u4f1a\u89e6\u53d1\u4e2d\u65ad，\u7528\u4e8e\u6267\u884c\u7d27\u6025\u5173\u95ed\u4efb\u52a1 \u4f4e\u529f\u8017\u529f\u80fd\u5305\u62ec\u7761\u7720\u6a21\u5f0f(sleep)\u3001\u505c\u673a\u6a21\u5f0f(stop)\u3001\u548c\u5f85\u673a\u6a21\u5f0f(standby)，\u53ef\u5728\u7cfb\u7edf\u7a7a\u95f2\u65f6，\u964d\u4f4estm32\u7684\u529f\u8017，\u5ef6\u957f\u8bbe\u5907\u7684\u4f7f\u7528\u65f6\u95f4，\u7761\u7720\u6a21\u5f0f\u4e00\u822c\u7701\u7535，\u505c\u673a\u6a21\u5f0f\u6bd4\u8f83\u7701\u7535，\u5f85\u673a\u6a21\u5f0f\u6781\u4e3a\u7701\u7535<\/p>\n

    \u7535\u6e90\u6846\u56fe：<\/p>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    \u4e0a\u7535\u590d\u4f4d\u548c\u6389\u7535\u590d\u4f4d\u7684\u6ce2\u5f62\u56fe：<\/p>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    PVD\u7684\u95e8\u9650：<\/p>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    \u4f4e\u529f\u8017\u6a21\u5f0f\u4e00\u89c8：<\/p>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    \u6a21\u5f0f\u7ec6\u5206：<\/p>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    \u7761\u7720\u6a21\u5f0f：<\/p>\n

  • \u6267\u884c\u5b8cWFI\/WFE\u6307\u4ee4\u540e，stm32\u8fdb\u5165\u7761\u7720\u6a21\u5f0f，\u7a0b\u5e8f\u6682\u505c\u8fd0\u884c，\u5524\u9192\u540e\u7a0b\u5e8f\u4ece\u6682\u505c\u7684\u5730\u65b9\u7ee7\u7eed\u8fd0\u884c<\/li>\n
  • SLEEPONEXIT\u4f4d\u51b3\u5b9astm32\u6267\u884c\u5b8cWFI\u6216WFE\u540e，\u662f\u7acb\u523b\u8fdb\u5165\u7761\u7720，\u8fd8\u662f\u7b49stm32\u4ece\u6700\u4f4e\u4f18\u5148\u7ea7\u7684\u4e2d\u65ad\u5904\u7406\u7a0b\u5e8f\u4e2d\u9000\u51fa\u65f6\u8fdb\u5165\u7761\u7720<\/li>\n
  • \u5728\u7761\u7720\u6a21\u5f0f\u4e0b，\u6240\u6709\u7684I\/O\u5f15\u811a\u90fd\u4fdd\u6301\u5b83\u4eec\u5728\u8fd0\u884c\u6a21\u5f0f\u65f6\u7684\u72b6\u6001<\/li>\n
  • WFI\u6307\u4ee4\u8fdb\u5165\u7761\u7720\u6a21\u5f0f，\u53ef\u88ab\u4efb\u4f55\u4e00\u4e2aNVIC\u54cd\u5e94\u7684\u4e2d\u65ad\u5524\u9192<\/li>\n
  • WFE\u6307\u4ee4\u8fdb\u5165\u7761\u7720\u6a21\u5f0f，\u53ef\u88ab\u5524\u9192\u4e8b\u4ef6\u5524\u9192<\/li>\n

    \u505c\u6b62\u6a21\u5f0f：<\/p>\n

  • \u6267\u884c\u5b8cWFI\/WFE\u6307\u4ee4\u540e，stm32\u8fdb\u5165\u505c\u6b62\u6a21\u5f0f，\u7a0b\u5e8f\u6682\u505c\u8fd0\u884c，\u5524\u9192\u540e\u7a0b\u5e8f\u4ece\u6682\u505c\u7684\u5730\u65b9\u7ee7\u7eed\u8fd0\u884c<\/li>\n
  • 1.8v\u4f9b\u7535\u533a\u57df\u7684\u6240\u6709\u65f6\u949f\u90fd\u88ab\u505c\u6b62，PLL\u3001HSI\u548cHSE\u88ab\u7981\u6b62，SRAM\u548c\u5bc4\u5b58\u5668\u5185\u5bb9\u88ab\u4fdd\u7559\u4e0b\u6765<\/li>\n
  • \u5728\u505c\u6b62\u6a21\u5f0f\u4e0b，\u6240\u6709\u7684I\/O\u5f15\u811a\u90fd\u4fdd\u6301\u5b83\u4eec\u5728\u8fd0\u884c\u6a21\u5f0f\u65f6\u7684\u72b6\u6001<\/li>\n
  • \u5f53\u4e00\u4e2a\u4e2d\u65ad\u6216\u5524\u9192\u4e8b\u4ef6\u5bfc\u81f4\u9000\u51fa\u505c\u6b62\u6a21\u5f0f\u65f6，HSI\u88ab\u9009\u4e3a\u7cfb\u7edf\u65f6\u949f<\/li>\n
  • \u5f53\u7535\u538b\u8c03\u8282\u5668\u5904\u4e8e\u4f4e\u529f\u8017\u6a21\u5f0f\u4e0b，\u7cfb\u7edf\u4ece\u505c\u6b62\u6a21\u5f0f\u9000\u51fa，\u4f1a\u6709\u4e00\u6bb5\u989d\u5916\u7684\u542f\u52a8\u5ef6\u65f6<\/li>\n
  • WFI\u6307\u4ee4\u8fdb\u5165\u505c\u6b62\u6a21\u5f0f，\u53ef\u88ab\u4efb\u4f55\u4e00\u4e2aEXTI\u4e2d\u65ad\u5524\u9192<\/li>\n
  • WFE\u6307\u4ee4\u8fdb\u5165\u505c\u6b62\u6a21\u5f0f，\u53ef\u88ab\u4efb\u4f55\u4e00\u4e2aEXTI\u4e8b\u4ef6\u5524\u9192<\/li>\n

    \u5f85\u673a\u6a21\u5f0f：<\/p>\n

  • \u6267\u884c\u5b8cWFI\/WFE\u6307\u4ee4\u540e，stm32\u8fdb\u5165\u5f85\u673a\u6a21\u5f0f，\u5524\u9192\u540e\u7a0b\u5e8f\u4ece\u5934\u5f00\u59cb\u8fd0\u884c<\/li>\n
  • \u6574\u4e2a1.8v\u4f9b\u7535\u533a\u57df\u88ab\u65ad\u7535，PLL\u3001HSI\u548cHSE\u4e5f\u88ab\u65ad\u7535，SRAM\u548c\u5bc4\u5b58\u5668\u5185\u5bb9\u4e22\u5931，\u53ea\u6709\u5907\u4efd\u7684\u5bc4\u5b58\u5668\u548c\u5f85\u673a\u7535\u8def\u7ef4\u6301\u4f9b\u7535<\/li>\n
  • \u5728\u5f85\u673a\u6a21\u5f0f\u4e0b，\u6240\u6709\u7684I\/O\u5f15\u811a\u53d8\u4e3a\u9ad8\u963b\u6001(\u6d6e\u7a7a\u8f93\u5165)<\/li>\n
  • WKUP\u5f15\u811a\u7684\u4e0a\u5347\u6cbf\u3001RTC\u95f9\u949f\u4e8b\u4ef6\u7684\u4e0a\u5347\u6cbf\u3001NRST\u5f15\u811a\u4e0a\u5916\u90e8\u590d\u4f4d\u3001IWDG\u590d\u4f4d\u9000\u51fa\u5f85\u673a\u6a21\u5f0f<\/li>\n

    \u4ee3\u7801： \u4fee\u6539\u4e3b\u9891： (\u5728system_stm32f10x.c\u4e2d\u5c06\u5176\u5b83\u7684\u6ce8\u91ca\u6389\u5c31\u884c)<\/p>\n

    \/* #define SYSCLK_FREQ_HSE HSE_VALUE *\/
    \n\/* #define SYSCLK_FREQ_24MHz 24000000 *\/
    \n#define SYSCLK_FREQ_36MHz 36000000
    \n\/* #define SYSCLK_FREQ_48MHz 48000000 *\/
    \n\/* #define SYSCLK_FREQ_56MHz 56000000 *\/
    \n\/* #define SYSCLK_FREQ_72MHz 72000000 *\/<\/p>\n

    \u5e93\u51fd\u6570\u4e2d\u5df2\u7ecf\u5b8f\u5b9a\u4e49\u4e86SystemCoreClock：\u65f6\u949f\u9891\u7387 \u542f\u52a8\u7761\u7720\u6a21\u5f0f： (\u4e32\u53e3\u53d1\u9001\u63a5\u6536\u4f1a\u6253\u65ad\u7761\u7720\u6a21\u5f0f)<\/p>\n

    __WFI(); \/\/\u6267\u884cWFI\u6307\u4ee4，CPU\u7761\u7720，\u5e76\u7b49\u5f85\u4e2d\u65ad\u5524\u9192，WFI\u7684\u5185\u6838\u662f\u6c47\u7f16\u4ee3\u7801
    \n\/\/__WFE(); \/\/\u4e2d\u65ad\u4e8b\u4ef6，\u914d\u7f6e\u6bd4WFI\u96be，\u6240\u4ee5\u4e00\u822c\u7528\u4e0a\u9762\u7684<\/p>\n

    \u542f\u52a8\u505c\u6b62\u6a21\u5f0f： (\u70e7\u5f55\u524d\u9700\u8981\u6309\u4f4f\u590d\u4f4d\u952e，\u70e7\u5f55\u5b8c\u4e4b\u540e\u677e\u5f00，\u5916\u90e8\u4e2d\u65ad\u80fd\u4e2d\u65ad\u505c\u6b62\u6a21\u5f0f)<\/p>\n

    RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
    \n\/\/\u5f00\u542fPWR\u7684\u65f6\u949f
    \n\/\/\u505c\u6b62\u6a21\u5f0f\u548c\u5f85\u673a\u6a21\u5f0f\u4e00\u5b9a\u8981\u8bb0\u5f97\u5f00\u542f
    \nPWR_EnterSTOPMode(PWR_Regulator_ON, PWR_STOPEntry_WFI);
    \n\/\/STM32\u8fdb\u5165\u505c\u6b62\u6a21\u5f0f，\u5e76\u7b49\u5f85\u4e2d\u65ad\u5524\u9192
    \nSystemInit(); \/\/\u5524\u9192\u540e，\u8981\u91cd\u65b0\u914d\u7f6e\u65f6\u949f<\/p>\n

    \u5f85\u673a\u6a21\u5f0f： (\u540c\u6837\u8981\u6309\u4f4f\u590d\u4f4d\u952e)<\/p>\n

    RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
    \n\/\/\u5f00\u542fPWR\u7684\u65f6\u949f
    \n\/\/\u505c\u6b62\u6a21\u5f0f\u548c\u5f85\u673a\u6a21\u5f0f\u4e00\u5b9a\u8981\u8bb0\u5f97\u5f00\u542f
    \nPWR_EnterSTANDBYMode();
    \n\/\/STM32\u8fdb\u5165\u505c\u6b62\u6a21\u5f0f，\u5e76\u7b49\u5f85\u6307\u5b9a\u7684\u5524\u9192\u4e8b\u4ef6（WKUP\u4e0a\u5347\u6cbf\u6216RTC\u95f9\u949f）<\/p>\n

    \u56db.\u770b\u95e8\u72d7<\/h3>\n

    1.\u72ec\u7acb\u770b\u95e8\u72d7<\/h4>\n

    WDG(Watchdog)\u770b\u95e8\u72d7：\u770b\u95e8\u72d7\u53ef\u4ee5\u76d1\u63a7\u7a0b\u5e8f\u7684\u8fd0\u884c\u72b6\u6001，\u5f53\u7a0b\u5e8f\u56e0\u4e3a\u8bbe\u8ba1\u6f0f\u6d1e\u3001\u786c\u4ef6\u6545\u969c\u3001\u7535\u78c1\u5e72\u6270\u7b49\u539f\u56e0，\u51fa\u73b0\u5361\u6b7b\u6216\u8005\u8dd1\u98de\u73b0\u8c61\u65f6，\u770b\u95e8\u72d7\u80fd\u53ca\u65f6\u590d\u4f4d\u7a0b\u5e8f，\u907f\u514d\u7a0b\u5e8f\u9677\u5165\u957f\u65f6\u95f4\u7684\u7f62\u5de5\u72b6\u6001，\u4fdd\u8bc1\u7cfb\u7edf\u7684\u53ef\u9760\u6027\u548c\u5b89\u5168\u6027 \u770b\u95e8\u72d7\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u5b9a\u65f6\u5668，\u5f53\u6307\u5b9a\u65f6\u95f4\u8303\u56f4\u5185，\u7a0b\u5e8f\u6ca1\u6709\u6267\u884c\u5582\u72d7(\u91cd\u7f6e\u8ba1\u6570\u5668)\u64cd\u4f5c\u65f6，\u770b\u95e8\u72d7\u786c\u4ef6\u7535\u8def\u5c31\u81ea\u52a8\u4ea7\u751f\u590d\u4f4d\u4fe1\u53f7 stm32\u5185\u7f6e\u4e24\u4e2a\u770b\u95e8\u72d7： \u72ec\u7acb\u770b\u95e8\u72d7(IWDG)：\u72ec\u7acb\u5de5\u4f5c，\u5bf9\u65f6\u95f4\u7cbe\u5ea6\u8981\u6c42\u8f83\u4f4e \u7a97\u53e3\u770b\u95e8\u72d7(WWDG)：\u8981\u6c42\u770b\u95e8\u72d7\u5728\u7cbe\u786e\u8ba1\u65f6\u7a97\u53e3\u8d77\u4f5c\u7528 IWDG\u6846\u56fe：<\/p>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    IWDG\u952e\u5bc4\u5b58\u5668：\u952e\u5bc4\u5b58\u5668\u672c\u8d28\u4e0a\u662f\u63a7\u5236\u5bc4\u5b58\u5668，\u7528\u4e8e\u63a7\u5236\u786c\u4ef6\u7535\u8def\u7684\u5de5\u4f5c \u5728\u53ef\u80fd\u5b58\u5728\u5e72\u6270\u7684\u60c5\u51b5\u4e0b，\u4e00\u822c\u901a\u8fc7\u5728\u6574\u4e2a\u952e\u5bc4\u5b58\u5668\u5199\u5165\u7279\u5b9a\u503c\u6765\u4ee3\u66ff\u63a7\u5236\u5bc4\u5b58\u5668\u5199\u5165\u4e00\u4f4d\u7684\u529f\u80fd，\u4ee5\u964d\u4f4e\u786c\u4ef6\u7535\u8def\u6536\u5230\u5e72\u6270\u7684\u6982\u7387<\/p>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    \u8d85\u65f6\u65f6\u95f4： <\/p>\n

    T <\/p>\n

    I <\/p>\n

    W <\/p>\n

    D <\/p>\n

    G <\/p>\n

    = <\/p>\n

    T <\/p>\n

    L <\/p>\n

    S <\/p>\n

    I <\/p>\n

    \u00d7 <\/p>\n

    P <\/p>\n

    R <\/p>\n

    \u9884\u5206\u9891\u7cfb\u6570 <\/p>\n

    \u00d7 <\/p>\n

    ( <\/p>\n

    R <\/p>\n

    L <\/p>\n

    + <\/p>\n

    1 <\/p>\n

    ) <\/p>\n

    T_{IWDG} = T_{LSI} \\\\times PR\u9884\u5206\u9891\u7cfb\u6570 \\\\times (RL + 1) <\/p>\n

    <\/span><\/span>T<\/span><\/span>I<\/span>W<\/span>D<\/span>G<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>=<\/span><\/span><\/span><\/span>T<\/span><\/span>L<\/span>S<\/span>I<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00d7<\/span><\/span><\/span><\/span>PR<\/span>\u9884\u5206\u9891\u7cfb\u6570<\/span><\/span>\u00d7<\/span><\/span><\/span><\/span>(<\/span>R<\/span>L<\/span><\/span>+<\/span><\/span><\/span><\/span>1<\/span>)<\/span><\/span><\/span><\/span><\/span> \u5176\u4e2d： <\/p>\n

    T <\/p>\n

    L <\/p>\n

    S <\/p>\n

    I <\/p>\n

    = <\/p>\n

    1 <\/p>\n

    F <\/p>\n

    L <\/p>\n

    S <\/p>\n

    I <\/p>\n

    T_{LSI} = \\\\frac{1}{F_{LSI}} <\/p>\n

    <\/span><\/span>T<\/span><\/span>L<\/span>S<\/span>I<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>=<\/span><\/span><\/span><\/span><\/span><\/span>F<\/span><\/span>L<\/span>S<\/span>I<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>1<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    2.\u7a97\u53e3\u770b\u95e8\u72d7<\/h4>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    WWDG\u5de5\u4f5c\u7279\u6027：<\/p>\n

  • \u9012\u51cf\u8ba1\u6570\u5668T[6:0]\u7684\u503c\u5c0f\u4e8e0x40\u65f6，WWDG\u4ea7\u751f\u590d\u4f4d<\/li>\n
  • \u9012\u51cf\u8ba1\u6570\u5668T[6:0]\u5728\u7a97\u53e3W[6:0]\u5916\u88ab\u91cd\u65b0\u88c5\u8f7d\u65f6，WWDG\u4ea7\u751f\u590d\u4f4d(\u4e0d\u80fd\u8fc7\u65e9\u5582\u72d7)<\/li>\n
  • \u9012\u51cf\u8ba1\u6570\u5668T[6:0]\u7b49\u4e8e0x40\u65f6\u53ef\u4ee5\u4ea7\u751f\u65e9\u671f\u5524\u9192\u4e2d\u65ad(EWI)，\u7528\u4e8e\u91cd\u88c5\u8f7d\u8ba1\u6570\u5668\u4ee5\u907f\u514dWWDG\u590d\u4f4d(\u53ef\u4ee5\u4fdd\u5b58\u91cd\u8981\u6570\u636e\u7b49)<\/li>\n
  • \u5b9a\u671f\u5199\u5165WWDG_CR\u5bc4\u5b58\u5668(\u5582\u72d7)\u4ee5\u907f\u514dWWDG\u590d\u4f4d<\/li>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    WWDG\u8d85\u65f6\u65f6\u95f4： \u8d85\u65f6\u65f6\u95f4： <\/p>\n

    T <\/p>\n

    W <\/p>\n

    W <\/p>\n

    D <\/p>\n

    G <\/p>\n

    = <\/p>\n

    T <\/p>\n

    P <\/p>\n

    C <\/p>\n

    L <\/p>\n

    K <\/p>\n

    1 <\/p>\n

    \u00d7 <\/p>\n

    4096 <\/p>\n

    \u00d7 <\/p>\n

    W <\/p>\n

    D <\/p>\n

    G <\/p>\n

    T <\/p>\n

    B <\/p>\n

    \u9884\u5206\u9891\u7cfb\u6570 <\/p>\n

    \u00d7 <\/p>\n

    ( <\/p>\n

    T <\/p>\n

    [ <\/p>\n

    5 <\/p>\n

    : <\/p>\n

    0 <\/p>\n

    ] <\/p>\n

    + <\/p>\n

    1 <\/p>\n

    ) <\/p>\n

    T_{WWDG} = T_{PCLK1} \\\\times 4096 \\\\times WDGTB\u9884\u5206\u9891\u7cfb\u6570 \\\\times (T[5:0] + 1) <\/p>\n

    <\/span><\/span>T<\/span><\/span>WW<\/span>D<\/span>G<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>=<\/span><\/span><\/span><\/span>T<\/span><\/span>PC<\/span>L<\/span>K<\/span>1<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00d7<\/span><\/span><\/span><\/span>4096<\/span><\/span>\u00d7<\/span><\/span><\/span><\/span>W<\/span>D<\/span>GTB<\/span>\u9884\u5206\u9891\u7cfb\u6570<\/span><\/span>\u00d7<\/span><\/span><\/span><\/span>(<\/span>T<\/span>[<\/span>5<\/span><\/span>:<\/span><\/span><\/span><\/span>0<\/span>]<\/span><\/span>+<\/span><\/span><\/span><\/span>1<\/span>)<\/span><\/span><\/span><\/span><\/span> \u7a97\u53e3\u65f6\u95f4： <\/p>\n

    T <\/p>\n

    W <\/p>\n

    I <\/p>\n

    N <\/p>\n

    = <\/p>\n

    T <\/p>\n

    P <\/p>\n

    C <\/p>\n

    L <\/p>\n

    K <\/p>\n

    1 <\/p>\n

    \u00d7 <\/p>\n

    4096 <\/p>\n

    \u00d7 <\/p>\n

    W <\/p>\n

    D <\/p>\n

    G <\/p>\n

    T <\/p>\n

    B <\/p>\n

    \u9884\u5206\u9891\u7cfb\u6570 <\/p>\n

    \u00d7 <\/p>\n

    ( <\/p>\n

    T <\/p>\n

    [ <\/p>\n

    5 <\/p>\n

    : <\/p>\n

    0 <\/p>\n

    ] <\/p>\n

    \u2212 <\/p>\n

    W <\/p>\n

    [ <\/p>\n

    5 <\/p>\n

    : <\/p>\n

    0 <\/p>\n

    ] <\/p>\n

    ) <\/p>\n

    T_{WIN} = T_{PCLK1} \\\\times 4096 \\\\times WDGTB\u9884\u5206\u9891\u7cfb\u6570 \\\\times (T[5:0] – W[5:0]) <\/p>\n

    <\/span><\/span>T<\/span><\/span>W<\/span>I<\/span>N<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>=<\/span><\/span><\/span><\/span>T<\/span><\/span>PC<\/span>L<\/span>K<\/span>1<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00d7<\/span><\/span><\/span><\/span>4096<\/span><\/span>\u00d7<\/span><\/span><\/span><\/span>W<\/span>D<\/span>GTB<\/span>\u9884\u5206\u9891\u7cfb\u6570<\/span><\/span>\u00d7<\/span><\/span><\/span><\/span>(<\/span>T<\/span>[<\/span>5<\/span><\/span>:<\/span><\/span><\/span><\/span>0<\/span>]<\/span><\/span>\u2212<\/span><\/span><\/span><\/span>W<\/span>[<\/span>5<\/span><\/span>:<\/span><\/span><\/span><\/span>0<\/span>])<\/span><\/span><\/span><\/span><\/span> \u5176\u4e2d： <\/p>\n

    T <\/p>\n

    P <\/p>\n

    C <\/p>\n

    L <\/p>\n

    K <\/p>\n

    1 <\/p>\n

    = <\/p>\n

    1 <\/p>\n

    F <\/p>\n

    P <\/p>\n

    C <\/p>\n

    L <\/p>\n

    K <\/p>\n

    1 <\/p>\n

    T_{PCLK1} = \\\\frac{1}{F_{PCLK1}} <\/p>\n

    <\/span><\/span>T<\/span><\/span>PC<\/span>L<\/span>K<\/span>1<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>=<\/span><\/span><\/span><\/span><\/span><\/span>F<\/span><\/span>PC<\/span>L<\/span>K<\/span>1<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>1<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    IWDG\u548cWWDG\u5bf9\u6bd4：<\/p>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    3.\u72ec\u7acb\u770b\u95e8\u72d7\u7684\u4ee3\u7801<\/h4>\n

    \u770b\u95e8\u72d7\u7684\u4ee3\u7801\u8f83\u4e3a\u7b80\u5355，\u6240\u4ee5\u5c31\u76f4\u63a5\u653e\u5728main.c\u91cc\u9762<\/p>\n

    #include "stm32f10x.h" \/\/ Device header
    \n#include "Delay.h"
    \n#include "OLED.h"
    \n#include "Key.h"<\/p>\n

    int main(void)
    \n{
    \n \/*\u6a21\u5757\u521d\u59cb\u5316*\/
    \n OLED_Init(); \/\/OLED\u521d\u59cb\u5316
    \n Key_Init(); \/\/\u6309\u952e\u521d\u59cb\u5316<\/p>\n

    \/*\u663e\u793a\u9759\u6001\u5b57\u7b26\u4e32*\/
    \n OLED_ShowString(1, 1, "IWDG TEST");<\/p>\n

    \/*\u5224\u65ad\u590d\u4f4d\u4fe1\u53f7\u6765\u6e90*\/
    \n if (RCC_GetFlagStatus(RCC_FLAG_IWDGRST) == SET) \/\/\u5982\u679c\u662f\u72ec\u7acb\u770b\u95e8\u72d7\u590d\u4f4d
    \n {
    \n OLED_ShowString(2, 1, "IWDGRST"); \/\/OLED\u95ea\u70c1IWDGRST\u5b57\u7b26\u4e32
    \n Delay_ms(500);
    \n OLED_ShowString(2, 1, " ");
    \n Delay_ms(100);<\/p>\n

    RCC_ClearFlag(); \/\/\u6e05\u9664\u6807\u5fd7\u4f4d
    \n }
    \n else \/\/\u5426\u5219，\u5373\u4e3a\u5176\u4ed6\u590d\u4f4d
    \n {
    \n OLED_ShowString(3, 1, "RST"); \/\/OLED\u95ea\u70c1RST\u5b57\u7b26\u4e32
    \n Delay_ms(500);
    \n OLED_ShowString(3, 1, " ");
    \n Delay_ms(100);
    \n }<\/p>\n

    \/*IWDG\u521d\u59cb\u5316*\/
    \n IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable); \/\/\u72ec\u7acb\u770b\u95e8\u72d7\u5199\u4f7f\u80fd
    \n IWDG_SetPrescaler(IWDG_Prescaler_16); \/\/\u8bbe\u7f6e\u9884\u5206\u9891\u4e3a16
    \n IWDG_SetReload(2499); \/\/\u8bbe\u7f6e\u91cd\u88c5\u503c\u4e3a2499，\u72ec\u7acb\u770b\u95e8\u72d7\u7684\u8d85\u65f6\u65f6\u95f4\u4e3a1000ms
    \n IWDG_ReloadCounter(); \/\/\u91cd\u88c5\u8ba1\u6570\u5668，\u5582\u72d7
    \n IWDG_Enable(); \/\/\u72ec\u7acb\u770b\u95e8\u72d7\u4f7f\u80fd<\/p>\n

    while (1)
    \n {
    \n Key_GetNum(); \/\/\u8c03\u7528\u963b\u585e\u5f0f\u7684\u6309\u952e\u626b\u63cf\u51fd\u6570，\u6a21\u62df\u4e3b\u5faa\u73af\u5361\u6b7b<\/p>\n

    IWDG_ReloadCounter(); \/\/\u91cd\u88c5\u8ba1\u6570\u5668，\u5582\u72d7<\/p>\n

    OLED_ShowString(4, 1, "FEED"); \/\/OLED\u95ea\u70c1FEED\u5b57\u7b26\u4e32
    \n Delay_ms(200); \/\/\u5582\u72d7\u95f4\u9694\u4e3a200+600=800ms
    \n OLED_ShowString(4, 1, " ");
    \n Delay_ms(600);
    \n }
    \n}<\/p>\n

    4.\u7a97\u53e3\u770b\u95e8\u72d7<\/h4>\n

    \u7a97\u53e3\u770b\u95e8\u72d7\u7684\u4ee3\u7801\u4e0e\u72ec\u7acb\u770b\u95e8\u72d7\u7684\u4ee3\u7801\u76f8\u4f3c，\u6700\u5927\u533a\u522b\u662f\u7a97\u53e3\u770b\u95e8\u72d7\u9700\u8981\u4f7f\u80fdAPB1\u7684WWDG\u65f6\u949f<\/p>\n

    \/\/ \u7701\u7565\u7684\u4ee3\u7801\u4e0e\u72ec\u7acb\u770b\u95e8\u72d7\u76f8\u540c
    \n RCC_APB1PeriphClockCmd(RCC_APB1Periph_WWDG, ENABLE); \/\/\u5f00\u542fWWDG\u7684\u65f6\u949f<\/p>\n

    \/*WWDG\u521d\u59cb\u5316*\/
    \n WWDG_SetPrescaler(WWDG_Prescaler_8); \/\/\u8bbe\u7f6e\u9884\u5206\u9891\u4e3a8
    \n WWDG_SetWindowValue(0x40 | 21); \/\/\u8bbe\u7f6e\u7a97\u53e3\u503c，\u7a97\u53e3\u65f6\u95f4\u4e3a30ms
    \n WWDG_Enable(0x40 | 54); \/\/\u4f7f\u80fd\u5e76\u7b2c\u4e00\u6b21\u5582\u72d7，\u8d85\u65f6\u65f6\u95f4\u4e3a50ms<\/p>\n

    while (1)
    \n {
    \n Key_GetNum(); \/\/\u8c03\u7528\u963b\u585e\u5f0f\u7684\u6309\u952e\u626b\u63cf\u51fd\u6570，\u6a21\u62df\u4e3b\u5faa\u73af\u5361\u6b7b<\/p>\n

    OLED_ShowString(4, 1, "FEED"); \/\/OLED\u95ea\u70c1FEED\u5b57\u7b26\u4e32
    \n Delay_ms(20); \/\/\u5582\u72d7\u95f4\u9694\u4e3a20+20=40ms
    \n OLED_ShowString(4, 1, " ");
    \n Delay_ms(20);<\/p>\n

    WWDG_SetCounter(0x40 | 54); \/\/\u91cd\u88c5\u8ba1\u6570\u5668，\u5582\u72d7
    \n }<\/p>\n

    \u4e94.\u95ea\u5b58<\/h3>\n

    1.\u5185\u90e8flash<\/h4>\n

    stm32f1\u7cfb\u5217\u7684FLASH\u5305\u542b\u7a0b\u5e8f\u5b58\u50a8\u5668\u3001\u7cfb\u7edf\u5b58\u50a8\u5668\u548c\u9009\u9879\u5b57\u8282\u4e09\u4e2a\u90e8\u5206，\u901a\u8fc7\u95ea\u5b58\u5b58\u50a8\u5668\u63a5\u53e3(\u5916\u8bbe)\u53ef\u4ee5\u5bf9\u7a0b\u5e8f\u5b58\u50a8\u5668\u548c\u9009\u9879\u5b57\u8282\u8fdb\u884c\u64e6\u9664\u548c\u7f16\u7a0b \u8bfb\u5199FLASH\u7684\u7528\u9014：<\/p>\n

  • \u5229\u7528\u7a0b\u5e8f\u5b58\u50a8\u5668\u7684\u5269\u4f59\u7a7a\u95f4\u6765\u4fdd\u5b58\u6389\u7535\u4e0d\u4e22\u5931\u7684\u7528\u6237\u6570\u636e<\/li>\n
  • \u901a\u8fc7\u5728\u7a0b\u5e8f\u4e2d\u7f16\u7a0b(IAP)，\u5b9e\u73b0\u7a0b\u5e8f\u7684\u81ea\u6211\u66f4\u65b0<\/li>\n

    \u5728\u7ebf\u7f16\u7a0b(ICP)：\u7528\u4e8e\u66f4\u65b0\u7a0b\u5e8f\u5b58\u50a8\u5668\u7684\u5168\u90e8\u5185\u5bb9，\u5b83\u901a\u8fc7JTAG\u3001SWD\u534f\u8bae\u6216\u7cfb\u7edf\u52a0\u8f7d\u7a0b\u5e8f(Bootloader)\u4e0b\u8f7d\u7a0b\u5e8f \u5728\u7a0b\u5e8f\u4e2d\u7f16\u7a0b(IAP)\u53ef\u4ee5\u4f7f\u7528\u5fae\u63a7\u5236\u5668\u652f\u6301\u7684\u4efb\u4e00\u79cd\u901a\u4fe1\u63a5\u53e3\u4e0b\u8f7d\u7a0b\u5e8f<\/p>\n

    \u95ea\u5b58\u6a21\u5757\u7ec4\u7ec7：<\/p>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    FLASH\u57fa\u672c\u7ed3\u6784：<\/p>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    FLASH\u89e3\u9501： FPEC\u5171\u6709\u4e09\u4e2a\u952e\u503c：<\/p>\n

  • RDPRT = 0x00000045<\/li>\n
  • KEY1 = 0x45670123<\/li>\n
  • KEY2 = 0xCDEF89AB<\/li>\n

    \u89e3\u9501：<\/p>\n

  • \u590d\u4f4d\u540e，FPEC\u88ab\u4fdd\u62a4，\u4e0d\u80fd\u5199\u5165FLASH_CR<\/li>\n
  • \u5728FLASH_KEYR\u5148\u5199\u5165KEY1，\u518d\u5199\u5165KEY2，\u89e3\u9501<\/li>\n
  • \u9519\u8bef\u7684\u64cd\u4f5c\u5e8f\u5217\u4f1a\u5728\u4e0b\u6b21\u590d\u4f4d\u524d\u9501\u6b7bFPEC\u548cFLASH_CR<\/li>\n

    \u52a0\u9501：\u8bbe\u7f6eFLASH_CR\u4e2d\u7684LOCK\u4f4d\u9501\u4f4fFPEC\u548cFLASH_CR<\/p>\n

    \u4f7f\u7528\u6307\u9488\u8bbf\u95ee\u5b58\u50a8\u5668：<\/p>\n

    #define __IO volatile
    \n\/\/volatile\u7684\u4f5c\u7528\u662f\u9632\u6b62\u7f16\u8bd1\u5668\u4f18\u5316
    \nuint16_t Data = *((__IO uint16_t *)(0x08000000));<\/p>\n

    \u4f7f\u7528\u6307\u9488\u5199\u6307\u5b9a\u5730\u5740\u4e0b\u7684\u5b58\u50a8\u5668：<\/p>\n

    *((__IO uint16_t *)(0x08000000)) = 0x1234;<\/p>\n

    \u7a0b\u5e8f\u5b58\u50a8\u5668\u7f16\u7a0b：<\/p>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    \u7a0b\u5e8f\u5b58\u50a8\u5668\u9875\u64e6\u9664：<\/p>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    \u7a0b\u5e8f\u5b58\u50a8\u5668\u5168\u64e6\u9664：<\/p>\n

    \"\u56fe\u7247\u6d88\u5931\u4e86\"
    \n\"\u56fe\u7247\u6d88\u5931\u4e86\" <\/p>\n

    \u9009\u9879\u5b57\u8282\u7f16\u7a0b：<\/p>\n

  • \u68c0\u67e5FLASH_SR\u7684BSY\u4f4d，\u4ee5\u786e\u8ba4\u6ca1\u6709\u5176\u5b83\u6b63\u5728\u8fdb\u884c\u7684\u7f16\u7a0b\u64cd\u4f5c<\/li>\n
  • \u89e3\u9501FLASH_CR\u7684OPTWRE\u4f4d<\/li>\n
  • \u8bbe\u7f6eFLASH_CR\u7684OPTPG\u4f4d\u4e3a1<\/li>\n
  • \u5199\u5165\u8981\u7f16\u7a0b\u7684\u534a\u5b57\u5230\u6307\u5b9a\u7684\u5730\u5740<\/li>\n
  • \u7b49\u5f85BSY\u4f4d\u53d8\u4e3a0<\/li>\n
  • \u8bfb\u51fa\u5199\u5165\u7684\u5730\u5740\u5e76\u9a8c\u8bc1\u6570\u636e<\/li>\n

    \u9009\u9879\u5b57\u8282\u64e6\u9664：<\/p>\n

  • \u68c0\u67e5FLASH_SR\u7684BSY\u4f4d，\u4ee5\u786e\u8ba4\u6ca1\u6709\u5176\u5b83\u6b63\u5728\u8fdb\u884c\u7684\u95ea\u5b58\u64cd\u4f5c<\/li>\n
  • \u89e3\u9501FLASH_CR\u7684OPTWRE\u4f4d<\/li>\n
  • \u8bbe\u7f6eFLASH_CR\u7684OPTER\u4f4d\u4e3a1<\/li>\n
  • \u8bbe\u7f6eFLASH_CR\u7684STAT\u4f4d\u4e3a1<\/li>\n
  • \u7b49\u5f85BSY\u4f4d\u53d8\u4e3a0<\/li>\n
  • \u8bfb\u51fa\u88ab\u64e6\u9664\u7684\u9009\u62e9\u5b57\u8282\u5e76\u505a\u9a8c\u8bc1<\/li>\n

    \u5668\u4ef6\u7535\u5b50\u7b7e\u540d：\u7535\u5b50\u7b7e\u540d\u5b58\u653e\u5728\u95ea\u5b58\u5b58\u50a8\u5668\u6a21\u5757\u7684\u7cfb\u7edf\u5b58\u50a8\u533a\u57df，\u5305\u542b\u7684\u82af\u7247\u8bc6\u522b\u4fe1\u606f\u5728\u51fa\u5382\u65f6\u7f16\u5199，\u4e0d\u53ef\u66f4\u6539，\u4f7f\u7528\u6307\u9488\u8bfb\u6307\u5b9a\u5730\u5740\u4e0b\u7684\u5b58\u50a8\u5668\u53ef\u83b7\u53d6\u7535\u5b50\u7b7e\u540d \u95ea\u5b58\u5bb9\u91cf\u5b58\u50a8\u5668：\u57fa\u5730\u5740：0x1FFF F7E0，\u5927\u5c0f：16\u4f4d \u4ea7\u54c1\u552f\u4e00\u8eab\u4efd\u6807\u8bc6\u5bc4\u5b58\u5668：\u57fa\u5730\u5740：0x1FFF F7E8，\u5927\u5c0f：96\u4f4d<\/p>\n","protected":false},"excerpt":{"rendered":"

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