KC868-A16S ESP32 16 Channel Relay Board Released

[youssouf]

hello admin i have problems with the following code can you help me thanks in advance.
when I send the command the relays do not change state


#include "Arduino.h"
#include "PCF8574.h"
#include <WiFi.h>
#include <WiFiClient.h>
#include <WiFiAP.h>


// Set i2c address
PCF8574 pcf8574_1(0x24,4,5);
PCF8574 pcf8574_2(0x25,4,5);


// Set these to your desired credentials.
const char *ssid = "kinconny";
const char *password = "01234567";

WiFiServer server(80);


void setup() {

Serial.begin(115200);
Serial.println();
Serial.println("Configuring access point...");

// You can remove the password parameter if you want the AP to be open.
WiFi.softAP(ssid, password);
IPAddress myIP = WiFi.softAPIP();
Serial.print("AP IP address: ");
Serial.println(myIP);
server.begin();

Serial.println("Server started");

// Set pinMode to OUTPUT
pcf8574_1.pinMode(P0, OUTPUT);
pcf8574_1.pinMode(P1, OUTPUT);
pcf8574_1.pinMode(P2, OUTPUT);
pcf8574_1.pinMode(P3, OUTPUT);
pcf8574_1.pinMode(P4, OUTPUT);
pcf8574_1.pinMode(P5, OUTPUT);
pcf8574_1.pinMode(P6, OUTPUT);
pcf8574_1.pinMode(P7, OUTPUT);

pcf8574_2.pinMode(P0, OUTPUT);
pcf8574_2.pinMode(P1, OUTPUT);
pcf8574_2.pinMode(P2, OUTPUT);
pcf8574_2.pinMode(P3, OUTPUT);
pcf8574_2.pinMode(P4, OUTPUT);
pcf8574_2.pinMode(P5, OUTPUT);
pcf8574_2.pinMode(P6, OUTPUT);
pcf8574_2.pinMode(P7, OUTPUT);

}


void loop() {

WiFiClient client = server.available(); // listen for incoming clients

if (client) { // if you get a client,
Serial.println("New Client."); // print a message out the serial port
String currentLine = ""; // make a String to hold incoming data from the client
while (client.connected()) { // loop while the client's connected
if (client.available()) { // if there's bytes to read from the client,
char c = client.read(); // read a byte, then
Serial.write©; // print it out the serial monitor
if (c == '\n') { // if the byte is a newline character

// if the current line is blank, you got two newline characters in a row.
// that's the end of the client HTTP request, so send a response:
if (currentLine.length() == 0) {
// HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
// and a content-type so the client knows what's coming, then a blank line:
client.println("HTTP/1.1 200 OK");
client.println("Content-type:text/html");
client.println();

// the content of the HTTP response follows the header:
client.print("Click <a href=\"/H\">here</a> to turn ON the LED.<br>");
client.print("Click <a href=\"/L\">here</a> to turn OFF the LED.<br>");

// The HTTP response ends with another blank line:
client.println();
// break out of the while loop:
break;
} else { // if you got a newline, then clear currentLine:
currentLine = "";
}
} else if (c != '\r') { // if you got anything else but a carriage return character,
currentLine += c; // add it to the end of the currentLine
}

// Check to see if the client request was "GET /H" or "GET /L":
if (currentLine.endsWith("GET /H")) {

pcf8574_1.digitalWrite(0, LOW);
pcf8574_1.digitalWrite(1, LOW);
pcf8574_1.digitalWrite(2, LOW);
pcf8574_1.digitalWrite(3, LOW);
pcf8574_1.digitalWrite(4, LOW);
pcf8574_1.digitalWrite(5, LOW);
pcf8574_1.digitalWrite(6, LOW);
pcf8574_1.digitalWrite(7, LOW);

pcf8574_2.digitalWrite(0,LOW);
pcf8574_2.digitalWrite(1,LOW);
pcf8574_2.digitalWrite(2,LOW);
pcf8574_2.digitalWrite(3,LOW);
pcf8574_2.digitalWrite(4,LOW);
pcf8574_2.digitalWrite(5,LOW);
pcf8574_2.digitalWrite(6,LOW);
pcf8574_2.digitalWrite(7,LOW);
delay(1000);
}

if (currentLine.endsWith("GET /L")) {

pcf8574_1.digitalWrite(0, HIGH);
pcf8574_1.digitalWrite(1, HIGH);
pcf8574_1.digitalWrite(2, HIGH);
pcf8574_1.digitalWrite(3, HIGH);
pcf8574_1.digitalWrite(4, HIGH);
pcf8574_1.digitalWrite(5, HIGH);
pcf8574_1.digitalWrite(6, HIGH);
pcf8574_1.digitalWrite(7, HIGH);

pcf8574_2.digitalWrite(0,HIGH);
pcf8574_2.digitalWrite(1,HIGH);
pcf8574_2.digitalWrite(2,HIGH);
pcf8574_2.digitalWrite(3,HIGH);
pcf8574_2.digitalWrite(4,HIGH);
pcf8574_2.digitalWrite(5,HIGH);
pcf8574_2.digitalWrite(6,HIGH);
pcf8574_2.digitalWrite(7,HIGH);
delay(1000);

}
}
}
// close the connection:
client.stop();
Serial.println("Client Disconnected.");
}
}