超简单DIY~制作自动授时64*32 LED单色大屏时钟（开源） - 数码之家

//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<ESP8266WiFi.h>
#include<WiFiUdp.h>
#include<ESP8266mDNS.h>
#include<ArduinoOTA.h>
#include<ESP8266WiFiMulti.h>
#include<ESP8266WiFiGeneric.h>
#include<time.h>
#include <U8g2lib.h>
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");
}

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