ESP8266时钟加入DS3231

longjunling · 发表于 2021-3-19 09:10:54

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小白一个，跪求大佬指点。
8266+TM1637的时钟，想加入一个DS3231，让时钟掉电或断网继续走时，还请大佬不吝赐教，谢谢！

下面是时钟代码，代码来自度娘。

#include <ESP8266WiFi.h>
#include <time.h>
#include <TM1637Display.h>
//needed for library
#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h>       //https://github.com/tzapu/WiFiManager

// NTP Config
int timezone = 8 * 3600;
int dst = 0;

// Module connection pins (Digital Pins)
#define CLK D5
#define DIO D7
#define TEST_DELAY 2000

const uint8_t SEG_CONN[] = {
  SEG_A | SEG_D | SEG_E | SEG_F,                // C
  SEG_C | SEG_D | SEG_E | SEG_G,                // o
  SEG_C | SEG_E | SEG_G,                         // n
  SEG_C | SEG_E | SEG_G                         // n
};

const uint8_t SEG_PASS[] = {
  SEG_A | SEG_B | SEG_E | SEG_F | SEG_G,          // P
  SEG_A | SEG_B | SEG_C | SEG_E | SEG_F | SEG_G, // A
  SEG_A | SEG_C | SEG_D | SEG_F | SEG_G,          // S
  SEG_A | SEG_C | SEG_D | SEG_F | SEG_G          // S
};

const uint8_t SEG_FAIL[] = {
  SEG_A | SEG_E | SEG_F | SEG_G,                // F
  SEG_A | SEG_B | SEG_C | SEG_E | SEG_F | SEG_G, // A
  SEG_F | SEG_G,                                  // I
  SEG_D | SEG_F | SEG_G                         // L
};

const uint8_t SEG_DONE[] = {
  SEG_B | SEG_C | SEG_D | SEG_E | SEG_G,          // d
  SEG_A | SEG_B | SEG_C | SEG_D | SEG_E | SEG_F, // O
  SEG_C | SEG_E | SEG_G,                         // n
  SEG_A | SEG_D | SEG_E | SEG_F | SEG_G          // E
};

TM1637Display display(CLK, DIO);

String lastTimeStr;
unsigned long lastShowColon = 0;
bool showColon = false;
bool hourcheck = false;

void setup()
{
  display.setBrightness(0x01);// 0x01~0x0e
  WiFiManager wifiManager;
  wifiManager.autoConnect("ClockAP");

  display.setSegments(SEG_CONN);
  while (WiFi.status() != WL_CONNECTED)
  {
delay(500);
  }
  display.setSegments(SEG_PASS);
  delay(1000);

  // Get time from NTP server
  configTime(timezone, dst, "ntp1.aliyun.com");
  while (!time(nullptr))
  {
delay(500);
  }
  display.setSegments(SEG_DONE);
  delay(1000);
}

void loop()
{
  uint8_t hour;
  bool hourcheck;
  time_t now = time(nullptr);
  struct tm* p_tm = localtime(&now);

  hour = p_tm->tm_hour;

  if (hour < 1)
  {
hourcheck = true;
  }
  else
  {
hourcheck = false;
  }
  if ((p_tm->tm_sec % 2) == 0)
  {
display.showNumberDecEx(hour * 100 + p_tm->tm_min, 0x40 , hourcheck);
  }
  else
  {
display.showNumberDecEx(hour * 100 + p_tm->tm_min, 0x00, hourcheck );
  }
}

xiaowei0304 · 发表于 2021-3-19 10:51:55

不太会玩8266，但是我觉得应该可以用三个全局变量表示时分秒，本机时钟累加走时，用网络时间校准即可（每天或每小时都可以，因为本地时钟也不会差的太离谱，可以认为是简单的NTP）。

wachenng · 发表于 2021-3-19 11:07:18

楼上说的对，首先是时间变量
int ds_hour, ds_min, ds_sec , sec;
int minute1, minute2, hour1, hour2;
然后是向ds3231写时间
if (WiFi.status() == WL_CONNECTED) {
Serial.println("已联网，准备更新时间！！！");
timeClient.begin();
timeClient.update();
//秒，分，时的获取及写入；
int Hour_ex = timeClient.getHours();                //hh
if (Hour_ex != 8) {
   Wire.beginTransmission(0x68);
   Wire.write(0x00);
   int Sec_ex = timeClient.getSeconds();                //ss
   int dd = (Sec_ex / 10 * 16) + (Sec_ex % 10);
   Wire.write(dd);
   Wire.endTransmission();
   Wire.beginTransmission(0x68);
   Wire.write(0x01);
   int Minu_ex = timeClient.getMinutes();                //mm
   int ddd = (Minu_ex / 10 * 16) + (Minu_ex % 10);
   Wire.write(ddd);
   Wire.endTransmission();
   Wire.beginTransmission(0x68);
   Wire.write(0x02);
   int Hour_ex = timeClient.getHours();                //hh
   int d = (Hour_ex / 10 * 16) + (Hour_ex % 10);
   Wire.write(d);
   Wire.endTransmission();
   Serial.println("时间更新完成！！！");
}
else {
   Serial.println("更新时间出错？？？");
}
接下来是读取时间
void read_time() {
  Wire.beginTransmission(0x68);
  Wire.write(0x00);
  Wire.endTransmission();
  Wire.requestFrom(0x68, 3);
  ds_sec = Wire.read();
  ds_min = Wire.read();
  ds_hour = Wire.read();
  hour1 = (ds_hour / 16);
  hour2 = (ds_hour % 16 );
  minute1 = (ds_min / 16 );
  minute2 = (ds_min % 16);
  sec = ((ds_sec / 16) * 10 + ds_sec % 16);
}