linfengfeiwu的小窝

显示本学期第几周php 2018-10-3

有时候需要知道现在是本学期的第几周，但又不方便算，所以一个小的php代码解决这个问题。代码: <?php header("Content-Type: text/html;charset=utf-8"); //可不要，在这里只是为了让确定字符格式，防止乱码。 $week = date('W'); $zhou = $week-35; //这里要自己算一下当前是第几周，再减去差值，如果差值为0则显示的就是今年的第几周 $weekarray=array("日","一","二","三","四","五","六"); //先定义一个数组 ?> <html> <title><?php echo '第'.$zhou.'周'; echo "星期".$weekarray[date("w")]; ?> </title> <center><h1><?php echo '今天是2018-2019第一学期的第'.$zhou.'周'; ?> <br> <?php echo "星期".$weekarray[date("w")]; ?> </h1></center> </html> 美化版： <?php header("Content-Type: text/html;charset=utf-8"); //可不要，在这里只是为了让确定字符格式，防止乱码。 $week = date('W'); $zhou = $week-35; //这里要自己算一下当前是第几周，再减去差值，如果差值为0则显示的就是今年的第几周 $weekarray=array("日","一","二","三","四","五","六"); //先定义一个数组 ?> <html> <title><?php echo '第'.$zhou.'周'; echo "星期".$weekarray[date("w")]; ?> </title> <center><h1> 今天是2018-2019第一学期的第<span style="color: rgb(112, 48, 160);"><strong><span style="font-size: 200px;"><?php echo $zhou; ?></span></strong></span>周 <br> 星期<span style="color: rgb(112, 48, 160);"><strong><span style="font-size: 180px;"><?php echo $weekarray[date("w")]; ?></span></strong></span> </h1></center> </html>
只能显示星期的数码管时钟 2018-8-5

这个东西完全是突发奇想，有时候就只想看下今天星期几，离周末还有几天。。。先上效果图：硬件上用的是一个共阴的1.5寸数码管，根据官方引脚资料（下图）接上UNO。把A至G分别接在D2至D9,1、5接在GND上。然后再接上DS3231模块，用法及库文件见：http://blog.readgroup.cn/post/61 代码： #include <Wire.h> #include "ds3231_2.h" #define BUFF_MAX 128 uint8_t time[8]; char recv[BUFF_MAX]; unsigned int recv_size = 0; unsigned long prev, interval = 1000; int pinDigitron = 2; //管脚D2连接到数码管的A脚，D3连B... D9连h void setup() { Serial.begin(9600); Wire.begin(); DS3231_init(DS3231_INTCN); memset(recv, 0, BUFF_MAX); Serial.println("GET time"); for(int x=0; x<8; x++) pinMode(pinDigitron+x, OUTPUT); //设置各脚为输出状态 } //在数码管中显示数字的函数 void displayDigit(unsigned char digit) { //定义一个数组表：不同数字的abcdefgh各段的取值 unsigned char abcdefgh[][8] = { {1,1,1,1,1,1,0,0}, //0 {0,1,1,0,0,0,0,0}, //1 {1,1,0,1,1,0,1,0}, //2 {1,1,1,1,0,0,1,0}, //3 {0,1,1,0,0,1,1,0}, //4 {1,0,1,1,0,1,1,0}, //5 {1,0,1,1,1,1,1,0}, //6 {1,1,1,0,0,0,0,0}, //7 }; if ( digit >= 16 ) return; for (unsigned char x=0; x<8; x++) digitalWrite( pinDigitron + x, abcdefgh[digit][x] ); } void loop() { char in; char buff[BUFF_MAX]; unsigned long now = millis(); struct ts t; // show time once in a while if ((now - prev > interval) && (Serial.available() <= 0)) { DS3231_get(&t); //Get time displayDigit(t.wday); //调用displayDigit()子函数，显示数字 prev = now; } }
ESP8266+1602时钟（温湿度版） 2018-8-5

上一个时钟只能显示时间，这次的这个又增加了温湿度，功能上更加完善。1602也改为了IIC的，方便接线。温湿度传感器使用的是DHT11，如果要精度再高点可以使用DHT22，他们用的是同一个库。硬件连接(注意GPIO标号为板子后面的标示)： 1602： VCC —— VCC GND —— GND SCL —— SCL/GPIO4 SDA —— SDA/GPIO5 DHT11： VCC —— VCC GND —— GND out——GPIO12 （D1 mini接线： SCL —— D1 SDA —— D2 DHT11 out——D6）代码： /* ESP8266+1602IIC wifi clock by: linfengfeiwu http://blog.readgroup.cn */ #include <ESP8266WiFi.h> #include <Time.h> #include <Timezone.h> #include "NTP.h" //DHT11 Sensor: #include "DHT.h" #define DHTPIN 12 // what digital pin we're connected to #define DHTTYPE DHT11 // DHT 11 DHT dht(DHTPIN, DHTTYPE); //I2C LCD: #include <Wire.h> // Comes with Arduino IDE #include <LiquidCrystal_I2C_DS3231.h> // Set the LCD I2C address #define I2C_ADDR 0x27 // Define I2C Address for the PCF8574T //---(Following are the PCF8574 pin assignments to LCD connections )---- // This are different than earlier/different I2C LCD displays #define Rs_pin 0 #define Rw_pin 1 #define En_pin 2 #define BACKLIGHT_PIN 3 #define D4_pin 4 #define D5_pin 5 #define D6_pin 6 #define D7_pin 7 #define LED_OFF 0 #define LED_ON 1 /*-----( Declare objects )-----*/ LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin); // Set your WiFi login credentials #define WIFI_SSID "xxx" // 使用时请修改为当前你的 wifi ssid #define WIFI_PASS "xxx" // 使用时请修改为当前你的 wifi 密码 #define ledPin 14 // 定义ledPin连接到GPIO14 //年 byte Nian[8] = {0b01000,0b01111,0b10010, 0b01111, 0b01010, 0b11111, 0b00010, 0b00010}; //月 byte Yue[8] = {0b01111, 0b01001, 0b01111, 0b01001, 0b01111, 0b01001, 0b10011, 0b00001}; //日 byte Ri[8] = {0b01111, 0b01001, 0b01001, 0b01111, 0b01001, 0b01001, 0b01111, 0b00000}; //摄氏度 byte du[8] = {0b11000,0b11011,0b00100, 0b00100, 0b00100, 0b00100, 0b00011, 0b00000}; // This clock is in the Mountain Time Zone // Change this for your timezone // 北京时间时区 #define STD_TIMEZONE_OFFSET +8 // Standard Time offset (-7 is mountain time) // *************************************************************** // TimeZone and Daylight Savings Time Rules // *************************************************************** // Define daylight savings time rules for the China TimeChangeRule mySTD = {"", First, Sun, Jan, 0, STD_TIMEZONE_OFFSET * 60}; Timezone myTZ(mySTD, mySTD); WiFiClient client; // This function is called once a second void updateDisplay(void) { TimeChangeRule *tcr; // Pointer to the time change rule // Read the current UTC time from the NTP provider time_t utc = now(); // Convert to local time taking DST into consideration time_t localTime = myTZ.toLocal(utc, &tcr); int hhhh = dht.readHumidity(); int tttt = dht.readTemperature(); // Map time to pixel positions int weekdays= weekday(localTime); int days = day(localTime); int months = month(localTime); int years = year(localTime); int seconds = second(localTime); int minutes = minute(localTime); int hours = hour(localTime) ; //12 hour format use : hourFormat12(localTime) isPM()/isAM() Serial.println(""); Serial.print("Current local time:"); Serial.print(days); Serial.print("/"); Serial.print(months); Serial.print("/"); Serial.print(years); Serial.print(" - "); Serial.print(hours); Serial.print(":"); Serial.print(minutes); Serial.print(":"); Serial.print(seconds); Serial.print(" - "); Serial.print(dayStr(weekdays)); Serial.println(""); lcd.clear(); lcd.setCursor(0,0); lcd.print(years); lcd.write(byte(0)); if(months<10) { lcd.print("0"); } lcd.print(months); lcd.write(byte(1)); if(days<10) { lcd.print("0"); } lcd.print(days); lcd.write(byte(2)); lcd.print(" "); printWeek(weekdays); lcd.setCursor(0,1); if(hours<10) { lcd.print("0"); } lcd.print(hours); lcd.print(":"); if(minutes<10) { lcd.print("0"); } lcd.print(minutes); lcd.print(":"); if(seconds<10) { lcd.print("0"); } lcd.print(seconds); lcd.print(" "); lcd.print(tttt); lcd.write(byte(3)); lcd.print(" "); lcd.print(hhhh); lcd.print("%"); } void setup() { Serial.begin(115200); pinMode(ledPin, OUTPUT); delay(10); lcd.begin(16, 2); // Switch on the backlight lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE); lcd.setBacklight(LED_ON); lcd.createChar(0, Nian); lcd.createChar(1, Yue); lcd.createChar(2, Ri); lcd.createChar(3, du); dht.begin(); // We start by connecting to a WiFi network initNTP(WIFI_SSID, WIFI_PASS); } // Previous seconds value time_t previousSecond = 0; void loop() { // Update the display only if time has changed if (timeStatus() != timeNotSet) { if (second() != previousSecond) { previousSecond = second(); // Update the display updateDisplay(); } } delay(1000); } void printWeek(int week) { switch(week) { case 1: lcd.print("Sun");break; case 2: lcd.print("Mon");break; case 3: lcd.print("Tue");break; case 4: lcd.print("Wed");break; case 5: lcd.print("Thr");break; case 6: lcd.print("Fri");break; case 7: lcd.print("Sat");break; default: lcd.print("E");break; } } NTP.h以及库文件见：http://blog.readgroup.cn/post/76 IIC1602的使用及库文件见：http://blog.readgroup.cn/post/72 效果图：
ESP8266+1602时钟（简单版） 2018-8-5

之前做的那些1602时钟虽然使用了DS3231来走时，误差不算太大，但始终会有点误差。加上上次因为DS3231模块设计问题，导致给纽扣电池的电压达到了5V，最终把电池给弄炸了，威力还不小，让我有点害怕，所以决定做一个基于WiFi自动校时的程序。上网找了一会，没有现成的方案和代码，但是找到了一个WiFi对时的程序，参见：https://github.com/YFROBOT-TM/YFRobot-NTPClock_OneNet，我的1602时钟也是基于这个WiFi授时改动来的。硬件连接：这个版本用的1602是那种带按键的模块式的，直接插上板子即可。代码： #include <ESP8266WiFi.h> #include <Time.h> #include <Timezone.h> #include "NTP.h" #include <LiquidCrystal.h> // Set your WiFi login credentials #define WIFI_SSID "XXX" // 使用时请修改为当前你的 wifi ssid #define WIFI_PASS "XXX" // 使用时请修改为当前你的 wifi 密码 #define ledPin 14 // 定义ledPin连接到GPIO14 LiquidCrystal lcd(0, 2, 4, 14, 12, 13); //年 byte Nian[8] = {0b01000,0b01111,0b10010, 0b01111, 0b01010, 0b11111, 0b00010, 0b00010}; //月 byte Yue[8] = {0b01111, 0b01001, 0b01111, 0b01001, 0b01111, 0b01001, 0b10011, 0b00001}; //日 byte Ri[8] = {0b01111, 0b01001, 0b01001, 0b01111, 0b01001, 0b01001, 0b01111, 0b00000}; // This clock is in the Mountain Time Zone // Change this for your timezone // 北京时间时区 #define STD_TIMEZONE_OFFSET +8 // Standard Time offset (-7 is mountain time) // *************************************************************** // TimeZone and Daylight Savings Time Rules // *************************************************************** // Define daylight savings time rules for the China TimeChangeRule mySTD = {"", First, Sun, Jan, 0, STD_TIMEZONE_OFFSET * 60}; Timezone myTZ(mySTD, mySTD); WiFiClient client; // This function is called once a second void updateDisplay(void) { TimeChangeRule *tcr; // Pointer to the time change rule // Read the current UTC time from the NTP provider time_t utc = now(); // Convert to local time taking DST into consideration time_t localTime = myTZ.toLocal(utc, &tcr); // Map time to pixel positions int weekdays= weekday(localTime); int days = day(localTime); int months = month(localTime); int years = year(localTime); int seconds = second(localTime); int minutes = minute(localTime); int hours = hour(localTime) ; //12 hour format use : hourFormat12(localTime) isPM()/isAM() Serial.println(""); Serial.print("Current local time:"); Serial.print(days); Serial.print("/"); Serial.print(months); Serial.print("/"); Serial.print(years); Serial.print(" - "); Serial.print(hours); Serial.print(":"); Serial.print(minutes); Serial.print(":"); Serial.print(seconds); Serial.print(" - "); Serial.print(dayStr(weekdays)); Serial.println(""); lcd.clear(); lcd.setCursor(0,0); lcd.print("Time:"); if(hours<10) { lcd.print("0"); } lcd.print(hours); lcd.print(":"); if(minutes<10) { lcd.print("0"); } lcd.print(minutes); lcd.print(":"); if(seconds<10) { lcd.print("0"); } lcd.print(seconds); lcd.print(" W"); printWeek(weekdays); lcd.setCursor(0,1); lcd.print("Date:"); lcd.print(years); lcd.write(byte(0)); if(months<10) { lcd.print("0"); } lcd.print(months); lcd.write(byte(1)); if(days<10) { lcd.print("0"); } lcd.print(days); lcd.write(byte(2)); } void setup() { Serial.begin(115200); pinMode(ledPin, OUTPUT); delay(10); lcd.begin(16, 2); lcd.createChar(0, Nian); lcd.createChar(1, Yue); lcd.createChar(2, Ri); // We start by connecting to a WiFi network initNTP(WIFI_SSID, WIFI_PASS); } // Previous seconds value time_t previousSecond = 0; void loop() { // Update the display only if time has changed if (timeStatus() != timeNotSet) { if (second() != previousSecond) { previousSecond = second(); // Update the display updateDisplay(); } } delay(1000); } void printWeek(int week) { switch(week) { case 1: lcd.print("7");break; case 2: lcd.print("1");break; case 3: lcd.print("2");break; case 4: lcd.print("3");break; case 5: lcd.print("4");break; case 6: lcd.print("5");break; case 7: lcd.print("6");break; default: lcd.print("E");break; } } NTP.h 文件： #ifndef NTP_H #define NTP_H #include <Arduino.h> #include <ESP8266WiFi.h> #include <TimeLib.h> #include <WiFiUdp.h> #define LOCALPORT 5000 // Local port to listen for UDP packets #define NTP_PACKET_SIZE 48 // NTP time stamp is in the first 48 bytes of the message // A UDP instance to let us send and receive packets over UDP WiFiUDP udp; byte packetBuffer[NTP_PACKET_SIZE]; // Buffer to hold incoming and outgoing packets // Don't hardwire the IP address or we won't get the benefits of the time server pool. const char *ntpServerName ;//= "time.windows.com";//"1.cn.pool.ntp.org"; IPAddress timeServerIP(182,92,12,11); //ONENET -- NTP // Send an NTP request to the time server at the given address unsigned long sendNTPpacket(IPAddress& address) { // Set all bytes in the buffer to 0 memset(packetBuffer, 0, NTP_PACKET_SIZE); // Initialize values needed to form NTP request 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(); } // NTP Time Provider Code time_t getNTPTime() { int attempts = 10; // Try multiple attempts to return the NTP time while (attempts--) { // Get a server from the pool if(ntpServerName != NULL){ WiFi.hostByName(ntpServerName, timeServerIP); } Serial.printf("Time server IP address: "); Serial.println(timeServerIP); while (udp.parsePacket() > 0); // Discard any previously received packets Serial.println("Transmitted NTP Request"); sendNTPpacket(timeServerIP); uint32_t beginWait = millis(); while (millis() - beginWait < 1500) { int size = udp.parsePacket(); if (size >= NTP_PACKET_SIZE) { Serial.println("Received NTP Response"); udp.read(packetBuffer, NTP_PACKET_SIZE); // Read packet into the buffer unsigned long secsSince1900; // Convert four bytes starting at location 40 to a long integer secsSince1900 = (unsigned long) packetBuffer[40] << 24; secsSince1900 |= (unsigned long) packetBuffer[41] << 16; secsSince1900 |= (unsigned long) packetBuffer[42] << 8; secsSince1900 |= (unsigned long) packetBuffer[43]; Serial.println("Got the time"); return secsSince1900 - 2208988800UL; } delay(10); } Serial.println("Retrying NTP request"); delay(4000); } Serial.println("No NTP Response"); return 0; } // Login to WiFi network and assign the time sync provider void initNTP(const char *ssid, const char *password) { // Set station mode WiFi.mode(WIFI_STA); //set work mode: WIFI_AP /WIFI_STA /WIFI_AP_STA // Start by connecting to a WiFi network WiFi.begin(ssid, password); int i = 0; while ((WiFi.status() != WL_CONNECTED) && (i++ < 30)) { delay(500); Serial.printf("."); } if (i == 31) { Serial.printf("\nCould not connect to: %s\n", ssid); return; } Serial.printf("\nConnected to: %s\n", ssid); delay(500); // Login suceeded so set UDP local port udp.begin(LOCALPORT); // Set the time provider to NTP setSyncProvider(getNTPTime); } #endif 效果图： WiFi用到的库文件： https://github.com/PaulStoffregen/Time https://github.com/JChristensen/Timezone
自建KMS服务器 2018-7-22

注意：本文所提供的方法仅供测试使用，切勿进行盗版等非法活动！有时候要激活下系统啥的（仅限VL版），使用第三方的KMS激活软件有时会不好使，还容易被捆绑一些恶意软件，所以这次自己在NEO上搭建一个激活服务。登录NEO，查看下系统位数和CPU类型：查看cpu信息 cat /proc/cpuinfo 查看系统位数 file /bin/ls 当然了，NEO的话这步可以跳过了，主要是在别的机器上要查看下，不然不知道用什么文件。接着下载软件包： wget https://github.com/Wind4/vlmcsd/releases/download/svn1112/binaries.tar.gz 解压文件，根据CPU类型，找到对应的版本，NEO的是使用的binaries/Linux/arm/little-endian/vlmcsd-armv7el-uclibc-static这个文件。 cd切换到此目录，执行./vlmcsd-armv7el-uclibc-static就可以运行了。要开机启动，在/etc/rc.local中加入cd /文件所在目录 && ./vlmcsd-armv7el-uclibc-static & 即可。此服务占用1688端口，注意不要重复。最后在需要激活的机器上使用以下脚本：http://blog.readgroup.cn/filetool/a/KMS.bat 将脚本中的服务器地址改为自己的即可。
谈谈自己最喜欢的三个游戏 2018-5-4

闲聊时间，聊聊我最喜欢的三个游戏。第一个就是《QQ飞车》了，这个游戏是我玩的最久的一个了，也是每台电脑必装的，虽然现在游戏大小越来越大，但还是偶尔拿出来玩玩。现在又有手游版的了，玩起来也方便了。第二个就是《我的世界》了，当初接触到这款游戏还是在一个同学的手机上，后来发现有电脑版，还能联机一起玩，从此便一发不可收拾了。和基友一起可以说是中了这个游戏的毒了。。。第三个就是《OSU！》了，这是一个音乐类游戏，当初是想玩节奏大师的，结果搜到了一个这个，也是果断入坑，还特地为此买了数位板来玩。曾经一度某首歌打不到S就不睡觉。。。
1602时钟更新一个带温湿度的代码 2018-4-25

又是一个版本改进了，这次添加了DHT11温湿度传感器，来显示实时温湿度。到此，这个时钟基本已经比较完美了。 DHT11接法和库文件见：http://blog.readgroup.cn/post/55 其他的库文件见：http://blog.readgroup.cn/post/70 直接上代码： #include <Wire.h> #include <ds3231.h> #include <LiquidCrystal_I2C_DS3231.h> #define BUFF_MAX 128 //DHT11 Sensor: #include "DHT.h" #define DHTPIN 12 // what digital pin we're connected to #define DHTTYPE DHT11 // DHT 11 DHT dht(DHTPIN, DHTTYPE); //****************************************Define I2C LCD Display ********************************* #define I2C_ADDR 0x27 // Define I2C Address for the PCF8574T //---(Following are the PCF8574 pin assignments to LCD connections )---- // This are different than earlier/different I2C LCD displays #define Rs_pin 0 #define Rw_pin 1 #define En_pin 2 #define BACKLIGHT_PIN 3 #define D4_pin 4 #define D5_pin 5 #define D6_pin 6 #define D7_pin 7 #define LED_OFF 0 #define LED_ON 1 /*-----( Declare objects )-----*/ LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin); //************************************ END LCD DISPLAY ******************************************* //摄氏度 byte Nian[8] = {0b11000,0b11011,0b00100, 0b00100, 0b00100, 0b00100, 0b00011, 0b00000}; //月 byte Yue[8] = {0b01111, 0b01001, 0b01111, 0b01001, 0b01111, 0b01001, 0b10011, 0b00001}; //日 byte Ri[8] = {0b01111, 0b01001, 0b01001, 0b01111, 0b01001, 0b01001, 0b01111, 0b00000}; uint8_t time[8]; char recv[BUFF_MAX]; unsigned int recv_size = 0; unsigned long prev, interval = 1000; void setup() { Serial.begin(9600); Wire.begin(); DS3231_init(DS3231_INTCN); memset(recv, 0, BUFF_MAX); Serial.println("GET time"); //**************************LCD Setup******************************** lcd.begin (16,2); // initialize the lcd // Switch on the backlight lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE); lcd.setBacklight(LED_ON); //***************************END LCD Setup******************************** Serial.println("Setting time"); // setTheTime("304022129022016"); // ssmmhhWDDMMYYYY set time once in the given format lcd.createChar(0, Nian); lcd.createChar(1, Yue); lcd.createChar(2, Ri); dht.begin(); } void loop() { int hhhh = dht.readHumidity(); int tttt = dht.readTemperature(); char tempF[6]; float temperature; char buff[BUFF_MAX]; unsigned long now = millis(); struct ts t; // show time once in a while if (now - prev > interval){ DS3231_get(&t); //Get time temperature = DS3231_get_treg(); //Get temperature dtostrf(temperature, 5, 1, tempF); lcd.clear(); lcd.setCursor(0,0); if(t.mon<10) { lcd.print("0"); } lcd.print(t.mon); lcd.write(byte(1)); if(t.mday<10) { lcd.print("0"); } lcd.print(t.mday); lcd.write(byte(2)); lcd.print(" "); lcd.print(t.wday); lcd.print(" "); lcd.print(tttt); lcd.write(byte(0)); lcd.print(" "); lcd.print(hhhh); lcd.print("%"); lcd.setCursor(0,1); //Go to second line of the LCD Screen if(t.hour<10) { lcd.print("0"); } lcd.print(t.hour); lcd.print(":"); if(t.min<10) { lcd.print("0"); } lcd.print(t.min); lcd.print(":"); if(t.sec<10) { lcd.print("0"); } lcd.print(t.sec); lcd.print(" LOVE ");//这里用来显示自定义字符，这行不要可以显示DS3231的温度 lcd.print(tempF); lcd.print((char)223); lcd.print("C"); prev = now; } } void setTheTime(char *cmd) { struct ts t; // ssmmhhWDDMMYYYY set time t.sec = inp2toi(cmd, 0); t.min = inp2toi(cmd, 2); t.hour = inp2toi(cmd, 4); t.wday = inp2toi(cmd, 6); t.mday = inp2toi(cmd, 7); t.mon = inp2toi(cmd, 9); t.year = inp2toi(cmd, 11) * 100 + inp2toi(cmd, 13); DS3231_set(t); Serial.println("OK"); } void printWeek(int week) { switch(week) { case 1: lcd.print("Mon");break; case 2: lcd.print("Tue");break; case 3: lcd.print("Wed");break; case 4: lcd.print("Thu");break; case 5: lcd.print("Fri");break; case 6: lcd.print("Sat");break; case 7: lcd.print("Sun");break; default: lcd.print(" E ");break; } } 效果图：
NanoPiNEO挂载移动硬盘 2018-4-24

之前装有aira2下载器，家里的宽带终于是升了100M光纤，那下载速度杠杠的。晚上用NanoPiNEO下东西又不耽误玩比开电脑下还省电，就是之前只靠SD卡是受不住了，必须外接移动硬盘来下了。移动硬盘是NTFS格式的，方便每次下完东西直接拿过来拷电脑上。首先插上移动硬盘，登录SSH，输入 fdisk -l 查看移动硬盘位置，我的在/dev/sda2. 然后安装所需软件包： sudo apt-get install fuse-utils ntfs-3g 加载内核模块： modprobe fuse 编辑fstab让移动硬盘开机自动挂载： sudo nano /etc/fstab 在最后一行添加如下内容 /dev/sda2 /mnt/dietpi_userdata/usb ntfs-3g defaults,noexec,umask=0000 0 0 保存重启，即可生效（这里注意,一旦使用了开机自动挂载，每次开机移动硬盘一定要连着，不然系统会启动失败就进不去了）（如果因此不能通过网络连接SSH进系统，可以使用USB串口登录，设置好com端口，波特率设为115200，先连接好USB，打开软件，再开机。然后修改掉这里错误的地方即可。）如果挂载fat32式则添加： /dev/sda2 /mnt/usb auto defaults,noexec,umask=0000 0 0 如果挂载ext2式则添加： /dev/sda2 /mnt/usb ext2 rw,defaults 0 0 （格式化硬盘：查看硬盘：sudo fdisk -l 先卸载：sudo umount /dev/sda2 再格式化：sudo mkfs.ext2 /dev/sda2 ）等重启好后输入df –h查看硬盘是否挂载成功即可。之后在aira2的下载路径里填入相关路径即可。
自制1602时钟再更新一个IIC1602代码 2018-4-5

这次的代码所使用的硬件上1602换成了IIC，不用复杂地接线了。把1602和DS3231按如下接好即可： VCC —— VCC GND —— GND SCL —— SCL/A5 SDA —— SDA/A4 代码（注意库名称和1602地址）： #include <Wire.h> #include <ds3231.h> #include <LiquidCrystal_I2C_DS3231.h> #define BUFF_MAX 128 //****************************************Define I2C LCD Display ********************************* #define I2C_ADDR 0x27 // Define I2C Address for the PCF8574T //---(Following are the PCF8574 pin assignments to LCD connections )---- // This are different than earlier/different I2C LCD displays #define Rs_pin 0 #define Rw_pin 1 #define En_pin 2 #define BACKLIGHT_PIN 3 #define D4_pin 4 #define D5_pin 5 #define D6_pin 6 #define D7_pin 7 #define LED_OFF 0 #define LED_ON 1 /*-----( Declare objects )-----*/ LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin); //************************************ END LCD DISPLAY ******************************************* //年 byte Nian[8] = {0b01000,0b01111,0b10010, 0b01111, 0b01010, 0b11111, 0b00010, 0b00010}; //月 byte Yue[8] = {0b01111, 0b01001, 0b01111, 0b01001, 0b01111, 0b01001, 0b10011, 0b00001}; //日 byte Ri[8] = {0b01111, 0b01001, 0b01001, 0b01111, 0b01001, 0b01001, 0b01111, 0b00000}; uint8_t time[8]; char recv[BUFF_MAX]; unsigned int recv_size = 0; unsigned long prev, interval = 1000; void setup() { Serial.begin(9600); Wire.begin(); DS3231_init(DS3231_INTCN); memset(recv, 0, BUFF_MAX); Serial.println("GET time"); //**************************LCD Setup******************************** lcd.begin (16,2); // initialize the lcd // Switch on the backlight lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE); lcd.setBacklight(LED_ON); //***************************END LCD Setup******************************** Serial.println("Setting time"); // setTheTime("304022129022016"); // ssmmhhWDDMMYYYY set time once in the given format lcd.createChar(0, Nian); lcd.createChar(1, Yue); lcd.createChar(2, Ri); } void loop() { char tempF[6]; float temperature; char buff[BUFF_MAX]; unsigned long now = millis(); struct ts t; // show time once in a while if (now - prev > interval){ DS3231_get(&t); //Get time temperature = DS3231_get_treg(); //Get temperature dtostrf(temperature, 5, 1, tempF); lcd.clear(); lcd.setCursor(0,0); lcd.print(t.year); lcd.write(byte(0)); if(t.mon<10) { lcd.print("0"); } lcd.print(t.mon); lcd.write(byte(1)); if(t.mday<10) { lcd.print("0"); } lcd.print(t.mday); lcd.write(byte(2)); lcd.print(" "); printWeek(t.wday); lcd.setCursor(0,1); //Go to second line of the LCD Screen if(t.hour<10) { lcd.print("0"); } lcd.print(t.hour); lcd.print(":"); if(t.min<10) { lcd.print("0"); } lcd.print(t.min); lcd.print(":"); if(t.sec<10) { lcd.print("0"); } lcd.print(t.sec); lcd.print(' '); lcd.print(tempF); lcd.print((char)223); lcd.print("C"); prev = now; } } void setTheTime(char *cmd) { struct ts t; // ssmmhhWDDMMYYYY set time t.sec = inp2toi(cmd, 0); t.min = inp2toi(cmd, 2); t.hour = inp2toi(cmd, 4); t.wday = inp2toi(cmd, 6); t.mday = inp2toi(cmd, 7); t.mon = inp2toi(cmd, 9); t.year = inp2toi(cmd, 11) * 100 + inp2toi(cmd, 13); DS3231_set(t); Serial.println("OK"); } void printWeek(int week) { switch(week) { case 1: lcd.print("Mon");break; case 2: lcd.print("Tue");break; case 3: lcd.print("Wed");break; case 4: lcd.print("Thu");break; case 5: lcd.print("Fri");break; case 6: lcd.print("Sat");break; case 7: lcd.print("Sun");break; default: lcd.print(" Error ");break; } } 效果图：原始代码和库来源：https://www.youtube.com/watch?v=eDUueSq_mcg
一个页面访问统计的php代码 2018-2-24

通过文件计数，每刷新一次页面就加一次。代码： <?php //数字输出网页计数器 $max_len = 9; $CounterFile = "counter.dat"; if(!file_exists($CounterFile)){ //如果计数器文件不存在 $counter = 0; $cf = fopen($CounterFile,"w"); //打开文件 fputs($cf,'0'); //初始化计数器 fclose($cf); //关闭文件 } else{ //取回当前计数器的值 $cf = fopen($CounterFile,"r"); $counter = trim(fgets($cf,$max_len)); fclose($cf); } $counter++; //计数器加一 $cf = fopen($CounterFile,"w"); //写入新的数据 fputs($cf,$counter); fclose($cf); ?> <span>访问统计： <?php echo $counter; //输出计数器 ?> 人次！</span>