//D0 = GPIO16;

//D1 = GPIO5;

//D2 = GPIO4;        LED on esp8266

//D3 = GPIO0;can not download when connected to low

//D4 = GPIO2;

//D5 = GPIO14;

//D6 = GPIO12;

//D7 = GPIO13;

//D8 = GPIO15;  can not start when high input

//D9 = GPIO3; UART RX

//D10 = GPIO1; UART TX

//LED_BUILTIN = GPIO16 (auxiliary constant for the board LED, not a board pin);

#include

#include

#include

#include

#include

#include

#include

#include

u8g2_t u8g2;

#define timezone 8

unsigned long Cycle = 1000;//刷新间隔，微秒

unsigned long DisplayLight = 50;//亮度

const char* ssid = "wang";  //Wifi名称

const char* password = "12345678";  //Wifi密码

char *time_str;

char H1,H2,M1,M2,S1,S2;

unsigned long SecondsSinceStart = 0;

unsigned long TenthSecondsSinceStart = 0;

void TenthSecondsSinceStartTask();

void OnSecond();

void NonStopTask();

#define RowA D8                    //行信号,驱动138

#define RowB D7

#define RowC D6

#define RowD D5

#define STB D2         //595 刷新显示  SS  LAT

#define CLK D1         //时钟    SCK

#define OE D0                         //  使能

#define R1 D4          //上半屏列信号输出

#define R2 D3          //下半屏列信号输出

void setup()

{

delay(50);

Serial.begin(115200);

pinMode(RowA, OUTPUT);

pinMode(RowB, OUTPUT);

pinMode(RowC, OUTPUT);

pinMode(RowD, OUTPUT); //138片选

pinMode(OE, OUTPUT); //138 使能

pinMode(R1, OUTPUT);//595 数据

pinMode(R2, OUTPUT);//595 数据

pinMode(CLK, OUTPUT); //595 时钟

pinMode(STB, OUTPUT); //595 使能

WiFi.disconnect();

WiFi.mode(WIFI_STA);//设置模式为STA

byte mac[6];

WiFi.softAPmacAddress(mac);

printf("macAddress 0x%02X:0x%02X:0x%02X:0x%02X:0x%02X:0x%02X\r\n",mac[0],mac[1],mac[2],mac[3],mac[4],mac[5]);

Serial.print("Is connection routing, please wait");

WiFi.begin(ssid, password); //Wifi接入到网络

Serial.println("\nConnecting to WiFi");

//如果Wifi状态不是WL_CONNECTED，则表示连接失败

unsigned char WiFiTimeOut = 0;

while (WiFi.status() != WL_CONNECTED) {

Serial.print(".");

delay(1000);    //延时等待接入网络

WiFiTimeOut++;

if (WiFiTimeOut>10)

{

break;

Serial.println("\nConnecting to WiFi Failed");

}

}

//设置时间格式以及时间服务器的网址

configTime(timezone * 3600, 0, "pool.ntp.org", "time.nist.gov");

Serial.println("\nWaiting for time");

while (!time(nullptr)) {

Serial.print(".");

delay(1000);

}

Serial.println("");

//开启OTA功能。除了第一次需要用USB下载，以后就可以使用WiFi下载程序了。

ArduinoOTA.onStart([]() {

String type;

if (ArduinoOTA.getCommand() == U_FLASH) {

type = "sketch";

} else { // U_SPIFFS

type = "filesystem";

}

// NOTE: if updating SPIFFS this would be the place to unmount SPIFFS using SPIFFS.end()

Serial.println("Start updating " + type);

});

ArduinoOTA.onEnd([]() {

Serial.println("\nEnd");

});

ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) {

Serial.printf("Progress: %u%%\r", (progress / (total / 100)));

});

ArduinoOTA.onError([](ota_error_t error) {

Serial.printf("Error[%u]: ", error);

if (error == OTA_AUTH_ERROR) {

Serial.println("Auth Failed");

} else if (error == OTA_BEGIN_ERROR) {

Serial.println("Begin Failed");

} else if (error == OTA_CONNECT_ERROR) {

Serial.println("Connect Failed");

} else if (error == OTA_RECEIVE_ERROR) {

Serial.println("Receive Failed");

} else if (error == OTA_END_ERROR) {

Serial.println("End Failed");

}

});

ArduinoOTA.begin();

Serial.println("Ready");

Serial.print("IP address: ");

Serial.println(WiFi.localIP());

u8g2_Setup_ssd1306_64x32_noname_f(&u8g2, U8G2_R0, NULL, NULL);  // init u8g2 structure

}

void hc138sacn(byte r)   //输出行线状态ABCD (A低,D高)

{

digitalWrite(RowA,(r & 0x01));

digitalWrite(RowB,(r & 0x02));

digitalWrite(RowC,(r & 0x04));

digitalWrite(RowD,(r & 0x08));

}

void DisplayOneLine()

{

//显示缓存扫描

static unsigned char row=0;

for (int i=0; i<64; i++)

{

digitalWrite(CLK,0);

digitalWrite(R1, ((u8g2.tile_buf_ptr[i%64+(row/8)*64]>>(row%8))&1));//发送上半屏

digitalWrite(R2, ((u8g2.tile_buf_ptr[i%64+(row/8)*64+128]>>(row%8))&1));//发送下半屏

digitalWrite(CLK,1);

}

hc138sacn(row);            //选行

digitalWrite(STB, 1);      //数据确认

digitalWrite(STB, 0);

if (DisplayLight>0)

{

digitalWrite(OE, 0);  //开启显示

}

delayMicroseconds(DisplayLight) ;  //亮度调节

digitalWrite(OE, 1);  //关闭显示

row++;

if (row>15)

{

row = 0;

NonStopTask();

}

}

unsigned long CurrentDisplayTime;

unsigned long LastDisplayTime;

void DisplayTimerTask()

{

CurrentDisplayTime = micros();

if (abs(CurrentDisplayTime - LastDisplayTime) > Cycle)

{

LastDisplayTime = CurrentDisplayTime;

DisplayOneLine();

}

}

void loop()

{

DisplayTimerTask();

}

void NonStopTask()

{

TenthSecondsSinceStartTask();

ArduinoOTA.handle();

}

void OnTenthSecond()

{

if (TenthSecondsSinceStart % 10 == 0)

{

OnSecond();

SecondsSinceStart++;

}

}

unsigned long LastMillis = 0;

void TenthSecondsSinceStartTask()

{

unsigned long CurrentMillis = millis();

if (abs(CurrentMillis - LastMillis) > 100)

{

LastMillis = CurrentMillis;

TenthSecondsSinceStart++;

OnTenthSecond();

}

}

char* WeekStr[7] = { "Sunday"

,"Monday"

,"Tuesday"

,"Wednesday"

,"Thursday"

,"Friday"

,"Saturday" };

void OnSecond()

{

static char sprint_buf[20];

time_t now = time(nullptr); //获取当前时间

//转换成年月日的数字，可以更加自由的显示。

struct   tm* timenow;

timenow = localtime(&now);

unsigned char tempHour = timenow->tm_hour;

unsigned char tempMinute = timenow->tm_min;

unsigned char tempSecond = timenow->tm_sec;

unsigned char tempDay = timenow->tm_mday;

unsigned char tempMonth = timenow->tm_mon + 1;

unsigned int tempYear = timenow->tm_year + 1900;

unsigned char tempWeek = timenow->tm_wday;

u8g2_ClearBuffer(&u8g2);//清空显存

u8g2_SetFont(&u8g2, u8g2_font_crox3t_tn);

//第一行大字，显示时间

sprintf(sprint_buf, "%02d:%02d:%02d"

, tempHour

, tempMinute

, tempSecond

);

u8g2_DrawStr(&u8g2, 3, 12, sprint_buf);

//第二行小字，显示日期

u8g2_SetFont(&u8g2, u8g2_font_IPAandRUSLCD_tf);//字体5*7

sprintf(sprint_buf, "%04d-%02d-%02d"

, tempYear

, tempMonth

, tempDay

);

u8g2_DrawStr(&u8g2, 0, 22, sprint_buf);

//第三行小字，显示星期

sprintf(sprint_buf, "%s"

, WeekStr[tempWeek]

);

u8g2_DrawStr(&u8g2, 0, 31, sprint_buf);

//显示中文的方法  但是这个屏幕最多只能显示八个汉字。本身这个源文件，必须是UTF-8格式

//u8g2_SetFont(&u8g2, u8g2_font_wqy16_t_gb2312);

//u8g2_DrawUTF8(&u8g2, 0, 14, "好好学习");

//u8g2_DrawUTF8(&u8g2, 0, 30, "天天向上");

}