天氣預報顯示+mqtt+dashboard
天氣預報顯示+mqtt+dashboard-專題作品(1)
我的構想是資訊完全由公開資訊API抓取下來,分成兩個部份顯示一個是在node-red dashboard由網頁顯示出來
另一個是在TFT顯示器顯示出來
先來看看node-red的dashboard顯示畫面如下:
包含了
- 日期
- AQI空氣品質
- 七日預報(我只截取了一整天每3小時的預報)
- PM2.5
- 溫濕度
TFT顯示
較麻煩的是TFT上顯示字型和圖形
關於本篇所使用的方式
在主程式同一個資料夾裡新增img.h和font.h(檔名可自設)
- img.h是放圖形轉換為16進位存放的地方
- font.h是放字型轉換為16進位的地方
先看圖片要如何轉換為16進位
教學影片
https://youtu.be/0s3azw74iDQ
img.h-->其中片段
#include <pgmspace.h>
const unsigned short sunnuAndCloudy [] PROGMEM ={//02d
0x0001, 0x0001, 0x0021, 0x0840, 0x0020, 0x0000, 0x0000, 0x0820, 0x0000, 0x0001, 0x0001, 0x0000, 0x0020, 0x0020, 0x0040, 0x0080, 0x0001, 0x0002, 0x0001, 0x0001, 0x0801, 0x0000, 0x0000, 0x0000, 0x0020, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0001, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0820, 0x0820, 0x0821, 0x0000, 0x0001, 0x0000, 0x0841, 0x0020, 0x0040, 0x0020, 0x0001, 0x0001, 0x0001, 0x0000, 0x0800, 0x0841, 0x0820, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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0x0000, 0x0000, 0x0000, 0x0000, 0x0840, 0x18e3, 0x52eb, 0xd6fb, 0xe77e, 0xdf3e, 0xc6bc, 0xae3b, 0xb69d, 0xb6bd, 0xb6be, 0xae9d, 0x95fa, 0x95fa, 0x95fa, 0x9e5c, 0x95fa, 0x95fa, 0x95fa, 0x9e1a, 0xb6bc, 0xbefd, 0xc73d, 0xcf5e, 0xdf9f, 0xdfbf, 0xe7bf, 0xe7df, 0xd7bf, 0xcf7f, 0xc71e, 0xae7c, 0xbebd, 0xc71e, 0xcf3e, 0xd77f,
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0x0021, 0x0841, 0x0020, 0x0000, 0x0020, 0x10a2, 0x52ca, 0xceba, 0xe77e, 0xd75d, 0xcefc, 0xb65a, 0xa5f9, 0xa61b, 0xae5c, 0xa61b, 0x95fa, 0x95da, 0x95fa, 0x95fa, 0x8db9, 0x95da, 0x9e3b, 0x9e3b, 0xae9c, 0xb6dd, 0xbefd, 0xc73e, 0xd77f, 0xd79f, 0xd77f, 0xd75f, 0xdf9f, 0xcf5f, 0xcf1e, 0xbe9c, 0xa5d9, 0xb65b, 0xbe9b, 0xbe7b,
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0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0020, 0x0000, 0x0021, 0x0021, 0x0001, 0x0021, 0x0001, 0x0083, 0x1126, 0x29c8, 0x322a, 0x3a4b, 0x29e9, 0x1947, 0x08c5, 0x0042, 0x0001, 0x0001, 0x0000, 0x0021, 0x0021, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0021, 0x0021, 0x0001, 0x0001, 0x0001, 0x0001, 0x0001, 0x0021, 0x0021, 0x0021, 0x0000, 0x0000, 0x0000, 0x0001, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0800, 0x0820, 0x0000, 0x0000, 0x0000, 0x0000, 0x0020, 0x0000, 0x0000, 0x0000, 0x0001, 0x0021, 0x0021, 0x0001, 0x0001, 0x0000, 0x0000, 0x0001, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0800, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0800, 0x0000, 0x0800, 0x0800, 0x0820, 0x0800, 0x0000, 0x0800, 0x0000, 0x0000, 0x0820, 0x0820, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0021, 0x0000, 0x0021, 0x0000, 0x0021, 0x0000, 0x0000
};
字模软件
教學影片
font.h-->其中片段
#include <pgmspace.h>
const unsigned char comma PROGMEM[]={
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x60,0x20,0x20,0x40,/*",",0*/
};
struct FNT_HZ // 汉字字模数据结构
{
char Index[4]; // 汉字内码索引,存放内码,如"中",在UTF-8编码下，每个汉字占3个字节，第四个是结束符0
const unsigned char* hz_Id; // 点阵码数据 存放内码后对应的 点阵序列 每个字需要32个字节的点阵序列
unsigned char hz_width;
};
PROGMEM const FNT_HZ hz[] =
{
{"溫", t,16},
{"濕", h,16},
{"多", dou, 16},
{"云", yun, 16},
{"晴", qing, 16},
{"雨", yu, 16},
{"小", sou, 16},
{"阴", yin, 16},
{"度", spend, 16},
{"少", shao, 16},
{",", comma, 16},
{"薄", bo, 16},
{"霧", wu, 16},
};
Node-red(有空再補)
這裡我們主要用到
openweathrMap的API取得進七日的天氣
主程式
#include <Arduino.h>
#include <WiFi.h>
#include <WiFiClient.h>
#include <PubSubClient.h>
#include <SPI.h>
#include <TFT_eSPI.h>
#include "font.h"
#include "bmp.h"
TFT_eSPI tft=TFT_eSPI();
const char *ssid="";
const char *password="";
const char *mqttServer="";
WiFiClient espClient;
PubSubClient client(espClient);
String MqttTemp="338/temp";
String MqttHumi="338/humi";
String date="esp32/date";
String icons="338/weather";
String detail="338/detail";
String pm="esp32/pm25";
void showHanzi(int32_t x, int32_t y, const char c[], uint32_t color) {
for (int k = 0; k < 20; k++)// 根据字库的字数调节循环的次数
if (hz[k].Index[0] == c[0] && hz[k].Index[1] == c[1] && hz[k].Index[2] == c[2])
{ tft.drawBitmap(x, y, hz[k].hz_Id, hz[k].hz_width, 16, color);
}
}
void wifiConn(){
WiFi.begin(ssid, password);
while (WiFi.isConnected()==false){
Serial.print(".");
delay(1000);
}
Serial.println("WiFi connected success!");
Serial.println(WiFi.localIP());
}
void callback(char *topic, byte *message, unsigned long lengh){
String msg;
Serial.print("topic: ");
Serial.println(topic);
Serial.print("msg: ");
for (int i=0; i<lengh; i++){
Serial.print(char(message[i]));
msg+=char(message[i]);
}
Serial.println();
if (String(topic)==MqttTemp){
Serial.println(msg);
tft.setTextSize(2);
tft.setTextColor(tft.color565(112,157,255));
tft.fillScreen(TFT_BLACK);
tft.setCursor(55, 60);
tft.print(msg);
showHanzi(105, 60, "度", tft.color565(112,157,255));
}
if (String(topic)==MqttHumi){
Serial.println(msg);
tft.setTextColor(tft.color565(255,87,87));
tft.setTextSize(2);
tft.setCursor(55, 80);
tft.print(msg+"%");
}
if (String(topic)==date){
Serial.println(msg);
tft.setTextColor(TFT_VIOLET);//年月日
tft.setTextSize(2);
tft.setCursor(5, 10);
tft.print(msg.substring(0,10));
tft.setTextColor(tft.color565(255, 252, 87));//星期
tft.setTextSize(2);
tft.setCursor(90, 30);
tft.print(msg.substring(20,23));
}
if (String(topic)==pm){
Serial.println(msg);
tft.setTextSize(2);
tft.setCursor(5, 110);
tft.print("pm2.5:"+msg+"ug");
tft.setTextColor(tft.color565(193, 255, 128));//aqi
}
if (String(topic)==icons){
Serial.println(msg);
if (msg=="04d"){
tft.setSwapBytes(true);
tft.pushImage(10, 60, 40, 40, partly_cloud);
showHanzi(10,30,"多",TFT_WHITE);
showHanzi(30,30,"云",TFT_WHITE);
}
else if (msg=="10d"){
tft.setSwapBytes(true);
tft.pushImage(10, 50, 40, 40, littleRain);
showHanzi(10,30,"小",TFT_WHITE);
showHanzi(30,30,"雨",TFT_WHITE);
}
else if (msg="02d"){
tft.setSwapBytes(true);
tft.pushImage(10, 50, 40, 40, sunnuAndCloudy);
showHanzi(10,30,"晴",TFT_WHITE);
showHanzi(40,30,"少",TFT_WHITE);
showHanzi(60,30,"云",TFT_WHITE);
}
else if (msg="03d"){
tft.setSwapBytes(true);
tft.pushImage(10, 50, 40, 40, scattered_clouds);
showHanzi(10,30,"少",TFT_WHITE);
showHanzi(30,30,"云",TFT_WHITE);
}
else if (msg="50d"){
tft.setSwapBytes(true);
tft.pushImage(10, 50, 40, 40, mist);
showHanzi(10,30,"薄",tft.color565(184, 181, 191));
showHanzi(30,30,"霧",tft.color565(184, 181, 191));
}
}
}
void reConnMqtt(){
while (! client.connected()){
Serial.println("正在連線mqtt...");
if (client.connect("esp32Client")){
client.subscribe("338/temp");
client.subscribe("338/humi");
client.subscribe("esp32/date");
client.subscribe("338/weather");
client.subscribe("338/detail");
client.subscribe("esp32/pm25");
}else{
Serial.print("無法連線的原因: ");
Serial.println(client.state());
delay(2000);
}
}
}
void setup() {
Serial.begin(115200);
wifiConn();
tft.init();
tft.begin();
tft.setRotation(3);//螢幕方向
tft.fillScreen(TFT_BLACK);
client.setServer(mqttServer, 1883);
client.setCallback(callback);
// showHanzi(5,110,"溫",(TFT_BROWN));
// showHanzi(65,110,"濕",TFT_DARKCYAN);
// tft.drawFastHLine(5,100,120,tft.alphaBlend(0, TFT_BLACK, tft.color565(255, 255, 255)));//上直線
// tft.drawFastHLine(5,30,120,tft.alphaBlend(0, TFT_BLACK, tft.color565(255, 255, 255)));//下直線
//tft.drawFastVLine(60, 100,120,tft.alphaBlend(0, TFT_BLACK, tft.color565(255, 255, 255)));
}
void loop() {
if (! client.connected()){
reConnMqtt();
}
client.loop();
}
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