Hi hello!
I am trying to combine 2 examples of arduino ( ir receive and mqtt send ) into 1 sketch.
It allmost works...
Only problem is sending the ir code itself
I get the error
incompatible types in assignment of 'uint32_t' {aka 'unsigned int'} to 'char [50]'
I think the problem is
msg = (uint32_t) (results.value >> 32), HEX;
client.publish("outTopic", msg);
when i replace msg with "test" it sends the text.
My code is
/*
Basic ESP8266 MQTT example
This sketch demonstrates the capabilities of the pubsub library in combination
with the ESP8266 board/library.
It connects to an MQTT server then:
- publishes "hello world" to the topic "outTopic" every two seconds
- subscribes to the topic "inTopic", printing out any messages
it receives. NB - it assumes the received payloads are strings not binary
- If the first character of the topic "inTopic" is an 1, switch ON the ESP Led,
else switch it off
It will reconnect to the server if the connection is lost using a blocking
reconnect function. See the 'mqtt_reconnect_nonblocking' example for how to
achieve the same result without blocking the main loop.
To install the ESP8266 board, (using Arduino 1.6.4+):
- Add the following 3rd party board manager under "File -> Preferences -> Additional Boards Manager URLs":
http://arduino.esp8266.com/stable/package_esp8266com_index.json
- Open the "Tools -> Board -> Board Manager" and click install for the ESP8266"
- Select your ESP8266 in "Tools -> Board"
*/
#include <ESP8266WiFi.h>
#include <PubSubClient.h>
#include "IRrecv.h"
// Update these with values suitable for your network.
const char* ssid = "xxx";
const char* password = "xxx";
const char* mqtt_server = "xxx";
uint16_t RECV_PIN = 14; // for ESP8266 micrcontroller
IRrecv irrecv(RECV_PIN);
decode_results results;
WiFiClient espClient;
PubSubClient client(espClient);
long lastMsg = 0;
char msg[50];
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.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();
// Switch on the LED if an 1 was received as first character
if ((char)payload[0] == '1') {
digitalWrite(BUILTIN_LED, LOW); // Turn the LED on (Note that LOW is the voltage level
// but actually the LED is on; this is because
// it is active low on the ESP-01)
} else {
digitalWrite(BUILTIN_LED, HIGH); // Turn the LED off by making the voltage HIGH
}
}
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("outTopic", "hello world");
// ... and resubscribe
client.subscribe("inTopic");
} 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() {
pinMode(BUILTIN_LED, OUTPUT); // Initialize the BUILTIN_LED pin as an output
Serial.begin(115200);
setup_wifi();
client.setServer(mqtt_server, 1883);
client.setCallback(callback);
irrecv.enableIRIn();
}
void loop() {
if (!client.connected()) {
reconnect();
}
client.loop();
// long now = millis();
// if (now - lastMsg > 2000) {
// lastMsg = now;
// ++value;
// snprintf (msg, 50, "hello world #%ld", value);
// Serial.print("Publish message: ");
// Serial.println(msg);
// client.publish("outTopic", msg);
// }
if (irrecv.decode(&results)) {
if (results.value >> 32) // print() & println() can't handle printing long longs. (uint64_t)
Serial.print((uint32_t) (results.value >> 32), HEX); // print the first part of the message
Serial.println((uint32_t) (results.value & 0xFFFFFFFF), HEX); // print the second part of the message
msg = (uint32_t) (results.value >> 32), HEX;
client.publish("outTopic", msg);
irrecv.resume(); // Receive the next value
}
delay(100);
}
