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#include <NTPClient.h>
#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
#include <time.h>
#include <SPI.h>
#define VFD_MOSI 13
#define VFD_CLK 14
#define VFD_CS 15
#define VFD_RST 16
#define VFD_DIMMING_UP 5 //亮度+
#define VFD_DIMMING_DOWN 4 //亮度-
//修改成需要連接的WiFi
const char *ssid = "WiFi名稱";
const char *password = "WiFi密碼";
static char VFD_Dimming = 0x8f; //VFD默認(rèn)亮度
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "time1.aliyun.com", 28800, 60000);
/*
參數(shù)說(shuō)明:
1. udp : 創(chuàng)建的UDP連接
2. poolServerName : 服務(wù)器地址, 默認(rèn): time.nist.gov
3. timeOffset : 時(shí)區(qū), 默認(rèn)0, 單位秒, 北京在第8時(shí)區(qū) 3600*8
4. milliseconds : 刷新時(shí)間間隔, 毫秒
*/
void VFD_DISP(char data[8]){
for(uint8_t i=0; i<8; i++){
digitalWrite(VFD_CS, LOW);
SPI.transfer(0x20+i); //定位
SPI.transfer(data[i]); //顯示的數(shù)據(jù)
digitalWrite(VFD_CS, HIGH);
}
digitalWrite(VFD_CS, LOW);
SPI.transfer(0xe8); //開(kāi)顯示
digitalWrite(VFD_CS, HIGH);
}
void VFD_SetDimming(char dimming){
digitalWrite(VFD_CS, LOW);
SPI.transfer(0xe4);
SPI.transfer(dimming);
digitalWrite(VFD_CS, HIGH);
}
void setup() {
SPI.begin();
pinMode(VFD_RST, OUTPUT);
pinMode(VFD_CS, OUTPUT);
pinMode(VFD_DIMMING_UP, INPUT);
pinMode(VFD_DIMMING_DOWN, INPUT);
//復(fù)位VFD
digitalWrite(VFD_RST, LOW);
delay(500);
digitalWrite(VFD_RST, HIGH);
//選通VFD
digitalWrite(VFD_CS, HIGH);
//設(shè)置SPI參數(shù)
SPI.setBitOrder(LSBFIRST); //LSB(SPI數(shù)據(jù)格式，低位在前）
SPI.setClockDivider(SPI_CLOCK_DIV64); //SPI時(shí)鐘，2~128，（實(shí)測(cè)：64->250KHz, 128->125KHz)
SPI.setDataMode(SPI_MODE3); //SPI模式，0~3，
/*
0：空閑時(shí)時(shí)鐘信號(hào)CLK為低電平，第1個(gè)邊沿開(kāi)始采樣；
1：空閑時(shí)時(shí)鐘信號(hào)CLK為低電平，第2個(gè)邊沿開(kāi)始采樣；
2：空閑時(shí)時(shí)鐘信號(hào)CLK為高電平，第1個(gè)邊沿開(kāi)始采樣；
3：空閑時(shí)時(shí)鐘信號(hào)CLK為高電平，第2個(gè)邊沿開(kāi)始采樣；
*/
//初始化VFD
//顯示設(shè)置位數(shù)
digitalWrite(VFD_CS, LOW);
SPI.transfer(0xe0);
SPI.transfer(0x07); //（8位）
digitalWrite(VFD_CS, HIGH);
VFD_SetDimming(VFD_Dimming);
char s[8] = {0x0d,'W','i','F','i','.','.','.'};
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
while ( WiFi.status() != WL_CONNECTED ) {
VFD_DISP(s);
delay (500);
}
timeClient.begin();
delay(1000);
}
void loop() {
timeClient.update();
time_t t = timeClient.getEpochTime(); //獲得時(shí)間戳
struct tm *p = gmtime(&t);
char sDate[16], sTime[16];
//strftime(sDate, 16, "%Y-%m-%d", p);
strftime(sTime, 16, "%H:%M:%S", p);
VFD_DISP(sTime);
delay(500);
//調(diào)整VFD亮度
while(digitalRead(VFD_DIMMING_UP) == LOW){
if(VFD_Dimming < 0xf0){
VFD_Dimming++;
VFD_SetDimming(VFD_Dimming);
char s[8] = {0x08,'D','i','m','m','i','n','g'};
VFD_DISP(s);
}
delay(50);
}
while(digitalRead(VFD_DIMMING_DOWN) == LOW){
if(VFD_Dimming > 0x01){
VFD_Dimming--;
VFD_SetDimming(VFD_Dimming);
char s[8] = {0x09,'D','i','m','m','i','n','g'};
VFD_DISP(s);
}
delay(50);
}
}

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