Wokwi 的 Analog stick 控制 EasyBuilderPro HMI 的' 移動圖形
const char* mqtt_server = "broker.emqx.io";
client.publish("wokwi_ebpro/joy", pesan.c_str());
WOKWI程式
#include <WiFi.h>
#include <PubSubClient.h>
#define led 2
#define sw 25
#define sw1 26
#define r 5
#define g 19
#define b 18
int pos = 33;
int swb = 0;
int s1b = 0;
int c = 0;
int c1 = 0;
int x = 0;
int y = 0;
int xb = 0;
int yb = 0;
String pesan = "";
const char* ssid = "Wokwi-GUEST";
const char* password = "";
const char* mqtt_server = "broker.emqx.io";
WiFiClient espClient;
PubSubClient client(espClient);
void setup_wifi() {
delay(10);
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
randomSeed(micros());
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
void callback(char* topic, byte* payload, unsigned int length) {
Serial.print("Message arrived [");
Serial.print(topic);
Serial.print("] ");
for (int i = 0; i < length; i++) {
Serial.print((char)payload[i]);
}
Serial.println();
if ((char)payload[14] == 't') {
digitalWrite(led, LOW);
pos = 32;
} else {
digitalWrite(led, HIGH);
pos = 33;
}
// In Core v3.x, ledcWrite takes the GPIO pin number as the first parameter
switch ((char)payload[pos]) {
case '0':
ledcWrite(r, 0);
ledcWrite(g, 0);
ledcWrite(b, 0);
break;
case '1':
ledcWrite(r, 165);
ledcWrite(g, 42);
ledcWrite(b, 42);
break;
case '2':
ledcWrite(r, 255);
ledcWrite(g, 0);
ledcWrite(b, 0);
break;
case '3':
ledcWrite(r, 255);
ledcWrite(g, 165);
ledcWrite(b, 0);
break;
case '4':
ledcWrite(r, 255);
ledcWrite(g, 255);
ledcWrite(b, 0);
break;
case '5':
ledcWrite(r, 0);
ledcWrite(g, 128);
ledcWrite(b, 0);
break;
case '6':
ledcWrite(r, 0);
ledcWrite(g, 0);
ledcWrite(b, 255);
break;
case '7':
ledcWrite(r, 160);
ledcWrite(g, 32);
ledcWrite(b, 240);
break;
case '8':
ledcWrite(r, 128);
ledcWrite(g, 128);
ledcWrite(b, 128);
break;
case '9':
ledcWrite(r, 255);
ledcWrite(g, 255);
ledcWrite(b, 255);
break;
}
}
void reconnect() {
while (!client.connected()) {
Serial.print("Attempting MQTT connection...");
String clientId = "ESP32Client-";
clientId += String(random(0xffff), HEX);
if (client.connect(clientId.c_str())) {
Serial.println("connected");
client.subscribe("ebpro_wokwi/led");
} else {
Serial.print("failed, rc=");
Serial.print(client.state());
Serial.println(" try again in 5 seconds");
delay(5000);
}
}
}
void setup() {
pinMode(sw, INPUT_PULLUP);
pinMode(sw1, INPUT_PULLUP);
pinMode(led, OUTPUT);
Serial.begin(115200);
setup_wifi();
client.setServer(mqtt_server, 1883);
client.setCallback(callback);
// Updated LEDC setup for ESP32 Arduino Core v3.x
ledcAttach(r, 5000, 8);
ledcAttach(g, 5000, 8);
ledcAttach(b, 5000, 8);
}
void loop() {
if (!client.connected()) {
reconnect();
}
client.loop();
int swa = !digitalRead(sw);
if (swa != swb) {
Serial.print("Publish message: ");
if (swa) {
Serial.println("{\"sw\":true}");
client.publish("wokwi_ebpro/sw", "{\"sw\":true}");
} else {
Serial.println("{\"sw\":false}");
client.publish("wokwi_ebpro/sw", "{\"sw\":false}");
}
}
swb = swa;
int a1 = analogRead(34);
switch (a1) {
case 0:
x = 2;
break;
case 2048:
x = 0;
break;
case 4095:
x = 1;
break;
}
int a2 = analogRead(35);
switch (a2) {
case 0:
y = 2;
break;
case 2048:
y = 0;
break;
case 4095:
y = 1;
break;
}
int s1 = !digitalRead(sw1);
if (s1 != s1b && s1) c++;
s1b = s1;
if (c > 9) c = 0;
if (x != xb || y != yb || c != c1) {
pesan = "{\"x\":" + String(x) + ",\"y\":" + String(y);
pesan = pesan + ",\"s\":" + String(c) + "}";
Serial.print("Publish message: ");
Serial.println(pesan);
client.publish("wokwi_ebpro/joy", pesan.c_str());
}
xb = x;
yb = y;
c1 = c;
}
