MQTT TM1637 Seconds to minutes on display. Need help

Projects Programming
1

hi everyone i'm new here not sure if i'm in the right place.
but have a question

I wrote a script. it concerns a TM1637 display that is controlled from node red over an mqtt connection

it works as far as I want only the display at 60 seconds counts to 61 instead of 1:00 minutes

can someone tell me how to fix this

here's my code:

#include <ESP8266WiFi.h>
#include <PubSubClient.h>
#include <TM1637Display.h>

#define CLK 2
#define DIO 0
TM1637Display display(CLK, DIO);

int cp;

// Update these with values suitable for your network.

const char* ssid = "-------";
const char* password = "----------";
const char* mqtt_server = "-----------";

WiFiClient espClient;
PubSubClient client(espClient);
unsigned long lastMsg = 0;
#define MSG_BUFFER_SIZE	(50)
char msg[MSG_BUFFER_SIZE];
int value = 0;

void setup_wifi() {

  delay(10);
  // We start by connecting to a WiFi network
  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[0] == '0') {
    Serial.println("time to 0");
    cp=0;
    display.showNumberDec(cp);
    Serial.println(cp);
   } 

  if ((char)payload[0] == '1') {
    Serial.println("Count +1");
    cp++;// increment the counter
    display.showNumberDec(cp);
    Serial.println(cp);
   } 
     
  if ((char)payload[0] == '2') {
    Serial.println("Count -1");
    cp--;
    display.showNumberDec(cp);
    Serial.println(cp);
   } 

  if ((char)payload[0] == '3') {
    Serial.println("Count -10");
    cp=(cp)-10;
    display.showNumberDec(cp);
    Serial.println(cp);
   } 
}

void reconnect() {
  // Loop until we're reconnected
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    // Create a random client ID
    String clientId = "ESP8266Client-";
    clientId += String(random(0xffff), HEX);
    // Attempt to connect
    if (client.connect(clientId.c_str())) {
      Serial.println("connected");
      // Once connected, publish an announcement...
      client.publish("esp01-1/out", "Connected to mqtt server");
      // ... and resubscribe
      client.subscribe("esp01-1/in");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      // Wait 5 seconds before retrying
      delay(5000);
    }
  }
}

void setup() {
  Serial.begin(115200);
  setup_wifi();
  client.setServer(mqtt_server, 1883);
  client.setCallback(callback);
  display.setBrightness(0x0f);
  
}

void loop() {

  if (!client.connected()) {
    reconnect();
  }
  client.loop();

  unsigned long now = millis();
  if (now - lastMsg > 500) {
    lastMsg = now;
    value = (cp);
    snprintf (msg, MSG_BUFFER_SIZE, "%ld", value);
    Serial.print("Publish message: ");
    Serial.println(msg);
    client.publish("Display/time", msg);
  }
}
2

You forgot to post a link to the used library (the one not in the library manager).