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本帖最后由 qingkong 于 2020-3-2 17:05 编辑
效果么 就是这样的
原型机，里面很多当时没想明白的地方，而且还不会画板。。。。 都是一团糟
说正事。。。。。
结构很简单 AMS 1117 -> ESP01S ->tm1637 了事
外面的塑料桶是一个胶卷筒。这东西TB也有大量卖的
用充电宝比较稳，但是因为正常工作（只显示时间）电流在 10MA 左右，不是显示0.00 就是显示0.01（我的USB电表只能显示到10MA），好的充电宝都拒绝工作。。。
而用一节18650 这个AMD1117 又比较渣 3.8V的时候 显示的数字就有明暗变化了。而4.2V到3.8V 大约24小时左右。。。。
至于啥时候关机就不知道了。
因为18650是买手电送的（手电20包邮），而且我也没有高级充电器可以查看电池的容量。。。
为啥用esp01和ams1117 因为闲的。。。而且总是觉得EPS8266 mini(wemosD1Mini这图网上扒的)
这种东西带个串口芯片会无端的耗电（其实验证的时候 直接mini搭的并不会多耗啥电 而且也能放入那个桶）而且TB采购的话，ESP01要便宜大约1块钱 :lol:
缺点及注意事项
1.不能检测电池电量 ESP01 没那个腿 。。。但是用 eps8266 mini 就行
2.ESP01 要把电源和使能脚连起来才能工作，否则不上班。。。我用了个50K欧的电阻连了他们
3.LED指示灯费电，小刀挑了
4.AMS1117用电池供电看来不大行（字会闪） 不知道HT7333会不会好一些。。。
5.强烈推荐 Sloeber 这个eclipse 下的 arduino 开发插件，而且他官网还有集成好的可以直接下载使用的包。只是需要把arduino下的库拷进去（或者靠梯子）
代码如下,能用 其他的不考虑:lol:
- #include "Arduino.h"
- //The setup function is called once at startup of the sketch
- /*
- ESP 8266 NTP时间 4位数码管 显示
- 测试使用的是 ESP01s
- 使用的库
- Grove 4 Digit Display
- 用GPIO0 GPIO2 显示时间 把大部分的串口输出都去掉了，以免esp01上那个蓝灯老是亮
- */
- #include <ESP8266WiFi.h>
- #include <WiFiUdp.h>
- #include <time.h> // time() ctime()
- #include <sys/time.h> // struct timeval
- //#include <Ticker.h>
- #include "TM1637.h"
- #define CLK 0//pins definitions for TM1637 and can be changed to other ports
- #define DIO 2
- TM1637 tm1637(CLK, DIO);
- #define ON 1
- #define OFF 0
- #ifndef STASSID
- #define STASSID "zc_hm"
- #define STAPSK "zc_hodsfds9"
- #define TZ 7 // (utc+) TZ in hours 东8区为啥是+7 ？？？
- #define DST_MN 60 // use 60mn for summer time in some countries
- #define TZ_MN ((TZ)*60)
- #define NTP0_OR_LOCAL1 1 // 0:use NTP 1:fake external RTC
- #define RTC_TEST 1510592825 // 1510592825 = Monday 13 November 2017 17:07:05 UTC
- ////////////////////////////////////////////////////////
- #define TZ_MN ((TZ)*60)
- #define TZ_SEC ((TZ)*3600)
- #define DST_SEC ((DST_MN)*60)
- #endif
- int8_t TimeDisp[] = { 0x00, 0x00, 0x00, 0x00 };
- unsigned char ClockPoint = 1;
- int Update_date;
- unsigned char halfsecond = 0;
- unsigned char second;
- unsigned char minute = 0;
- unsigned char hour = 12;
- // for testing purpose:
- extern "C" int clock_gettime(clockid_t unused, struct timespec *tp);
- const char *ssid = STASSID; // your network SSID (name)
- const char *pass = STAPSK; // your network password
- int conts = 0; //计数器
- boolean if_ntp = false; //是否同步NTP
- uint32_t chipId = ESP.getChipId();
- unsigned int localPort = 2390; // local port to listen for UDP packets
- /* Don't hardwire the IP address or we won't get the benefits of the pool.
- Lookup the IP address for the host name instead */
- IPAddress timeServerIP(192, 168, 198, 126); // time.nist.gov NTP server
- //IPAddress timeServerIP; // time.nist.gov NTP server address
- const char *ntpServerName = "cn.ntp.org.cn"; //换成阿里的NTP的话更快 还有很多 例如 cn.ntp.org.cn
- const int NTP_PACKET_SIZE = 48; // NTP time stamp is in the first 48 bytes of the message
- byte packetBuffer[NTP_PACKET_SIZE]; //buffer to hold incoming and outgoing packets
- timeval tv;
- timespec tp;
- time_t now;
- uint32_t now_ms, now_us;
- // A UDP instance to let us send and receive packets over UDP
- WiFiUDP udp; // @suppress("Abstract class cannot be instantiated")
- //Ticker oneSec; //定时一秒一次
- void setup() {
- pinMode(LED_BUILTIN, OUTPUT);
- ESP.wdtEnable(WDTO_4S); //打开看门狗
- Serial.begin(115200);
- // Serial.println();
- // Serial.println();
- // We start by connecting to a WiFi network
- // Serial.print("Connecting to ");
- // Serial.println(ssid);
- WiFi.mode(WIFI_STA);
- WiFi.begin(ssid, pass);
- while (WiFi.status() != WL_CONNECTED) {
- delay(500);
- // Serial.print(".");
- }
- // Serial.println("");
- Serial.println("WiFi connected");
- // Serial.println("IP address: ");
- // Serial.println(WiFi.localIP());
- // Serial.println(WiFi.SSID());
- // Serial.println("Starting UDP");
- udp.begin(localPort);
- // Serial.print("Local port: ");
- // Serial.println(udp.localPort());
- tm1637.init();
- tm1637.set(BRIGHT_DARKEST); //BRIGHT_TYPICAL = 2,BRIGHT_DARKEST = 0,BRIGHTEST = 7;
- // oneSec.attach(1, oneSecond); //每秒执行一次
- }
- void TimingISR() {
- halfsecond++;
- Update_date = 1;
- // // Serial.println(second);
- ClockPoint = !ClockPoint;
- if (halfsecond == 2) {
- halfsecond = 0;
- }
- }
- void TimeUpdate(void) {
- if (ClockPoint)
- tm1637.point(POINT_ON);
- else
- tm1637.point(POINT_OFF);
- TimeDisp[0] = hour / 10;
- TimeDisp[1] = hour % 10;
- TimeDisp[2] = minute / 10;
- TimeDisp[3] = minute % 10;
- Update_date = 0;
- }
- void oneSecond() {
- // Serial.print(chipId);
- // // Serial.println(if_ntp);
- if ((conts == 0) or (conts == (30 * 60))
- or (conts == 10 and if_ntp == false)) {
- setTime(ntpServerName); // @suppress("Invalid arguments")
- conts = 0;
- };
- ESP.wdtFeed();
- // gettimeofday(&tv, nullptr);
- // clock_gettime(0, &tp);
- //now = time(nullptr);
- // EPOCH+tz+dst
- // Serial.print(" time:");
- // Serial.print((uint32_t) now);
- print_time();
- TimingISR();
- if (Update_date == 1) {
- TimeUpdate();
- tm1637.display(TimeDisp);
- }
- ESP.wdtFeed();
- //delay(250);
- // human readable
- //// Serial.print(" ctime:(UTC+");
- //// Serial.print((uint32_t) (TZ * 60 + DST_MN));
- //// Serial.print("mn) ");
- // // Serial.print(ctime(&now));
- //// Serial.print(time_t(&now));
- conts++; //计数加1
- }
- void loop() {
- oneSecond();
- delay(1000);
- }
- void print_time() {
- gettimeofday(&tv, nullptr);
- clock_gettime(0, &tp);
- now = time(nullptr);
- //// Serial.print(now.yr, now.mon, now.date, now.hr, now.min, now.sec);
- int y = 1970, mon, d, h, m, s, wk;
- wk = ((now / 86400L) % 7 + 4) % 7; //86400 is secons in one day; +1 for 1970/1/1 is 周四
- do {
- unsigned long ys;
- if ((y % 4 == 0 && y % 100 != 0) || y % 400 == 0) {
- ys = 31622400L; //31622400 = 366 * 24 * 3600;
- } else {
- ys = 31536000L; // 31536000 = 365 * 24 * 3600;
- }
- if (now < (signed long) ys) {
- break;
- } else {
- now -= ys;
- y++;
- }
- } while (1);
- int mons[12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
- if ((y % 4 == 0 && y % 100 != 0) || y % 400 == 0) {
- mons[1] = 29;
- }
- for (mon = 0; mon < 12; mon++) {
- if (now < mons[mon] * 86400L) {
- break;
- } else {
- now -= mons[mon] * 86400L;
- }
- }
- d = now / 86400L + 1; //86400 = 24 * 3600 = how many seconds in a day
- now = now % 86400L;
- h = now / 3600;
- now = now % 3600;
- m = now / 60;
- s = now % 60;
- char buf[50];
- snprintf(buf, sizeof(buf), "%04d/%02d/%02d %02d:%02d:%02d %0d", y, mon + 1,
- d, h, m, s, wk);
- // Serial.print("DATE: ");
- // Serial.println(buf);
- hour = (int) h;
- minute = (int) m;
- }
- // send an NTP request to the time server at the given address
- void sendNTPpacket(IPAddress &address) {
- // Serial.println("sending NTP packet...");
- // set all bytes in the buffer to 0
- memset(packetBuffer, 0, NTP_PACKET_SIZE);
- // Initialize values needed to form NTP request
- // (see URL above for details on the packets)
- packetBuffer[0] = 0b11100011; // LI, Version, Mode
- packetBuffer[1] = 0; // Stratum, or type of clock
- packetBuffer[2] = 6; // Polling Interval
- packetBuffer[3] = 0xEC; // Peer Clock Precision
- // 8 bytes of zero for Root Delay & Root Dispersion
- packetBuffer[12] = 49;
- packetBuffer[13] = 0x4E;
- packetBuffer[14] = 49;
- packetBuffer[15] = 52;
- // all NTP fields have been given values, now
- // you can send a packet requesting a timestamp:
- udp.beginPacket(address, 123); //NTP requests are to port 123
- udp.write(packetBuffer, NTP_PACKET_SIZE);
- udp.endPacket();
- }
- void setTime(const char *ntpServerName) {
- //get a random server from the pool
- // WiFi.hostByName(ntpServerName, timeServerIP);
- digitalWrite(LED_BUILTIN, LOW);
- // Serial.println(timeServerIP);
- sendNTPpacket(timeServerIP); // send an NTP packet to a time server
- // wait to see if a reply is available
- delay(100);
- int cb = udp.parsePacket();
- if (!cb) {
- // Serial.println("no packet yet");
- if_ntp = false;
- } else {
- digitalWrite(LED_BUILTIN, HIGH);
- if_ntp = true;
- // Serial.print("packet received, length=");
- // Serial.println(cb);
- // We've received a packet, read the data from it
- udp.read(packetBuffer, NTP_PACKET_SIZE); // read the packet into the buffer
- //the timestamp starts at byte 40 of the received packet and is four bytes,
- // or two words, long. First, esxtract the two words:
- unsigned long highWord = word(packetBuffer[40], packetBuffer[41]);
- unsigned long lowWord = word(packetBuffer[42], packetBuffer[43]);
- // combine the four bytes (two words) into a long integer
- // this is NTP time (seconds since Jan 1 1900):
- unsigned long secsSince1900 = highWord << 16 | lowWord;
- // // Serial.print("Seconds since Jan 1 1900 = ");
- // // Serial.println(secsSince1900);
- // // now convert NTP time into everyday time:
- // // Serial.print("Unix time = ");
- // Unix time starts on Jan 1 1970. In seconds, that's 2208988800:
- const unsigned long seventyYears = 2208988800UL;
- // subtract seventy years:
- unsigned long epoch = secsSince1900 - seventyYears;
- // print Unix time:
- // // Serial.println(epoch);
- time_t rtc = epoch;
- timeval tv = { rtc, 0 };
- timezone tz = { TZ_MN + DST_MN, 0 };
- settimeofday(&tv, &tz);
- // print the hour, minute and second:
- // Serial.print("The UTC time is "); // UTC is the time at Greenwich Meridian (GMT)
- // Serial.print((epoch % 86400L) / 3600); // print the hour (86400 equals secs per day)
- // Serial.print(':');
- if (((epoch % 3600) / 60) < 10) {
- // In the first 10 minutes of each hour, we'll want a leading '0'
- // Serial.print('0');
- }
- // Serial.print((epoch % 3600) / 60); // print the minute (3600 equals secs per minute)
- // Serial.print(':');
- if ((epoch % 60) < 10) {
- // In the first 10 seconds of each minute, we'll want a leading '0'
- // Serial.print('0');
- }
- // Serial.println(epoch % 60); // print the second
- }
- // wait ten seconds before asking for the time again
- }
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