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mqtt functions.ino
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mqtt functions.ino
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// publishing the BME280 measurements
void publish_temperature(float temperature) {
dtostrf(temperature,2,2,msg_out);
mqtt.publish("test_esp32/temperature", msg_out);
}
void publish_pressure(float pressure) {
dtostrf(pressure,2,2,msg_out);
mqtt.publish("test_esp32/pressure", msg_out);
}
void publish_humidity(float humidity) {
dtostrf(humidity,2,2,msg_out);
mqtt.publish("test_esp32/humidity", msg_out);
}
// ---------------------------------------- dealing with test and check and error messages -----------
void test_esp32_subscriber(String topic, String message) {
Serial.println(s+"Message arrived in function 1 ["+topic+"] "+message);
}
void tele_subscriber(String topic, String message) {
Serial.println(s+"Message arrived in function 2 ["+topic+"] "+message);
}
void rtl_433_subscriber(String topic, String message) {
Serial.println(s+"Message arrived in rtl_433 ["+topic+"] "+message);
}
void error_no_float(String variable) {
Serial.print(variable);
Serial.println(" - Invalid floating-point number");
}
void error_no_int(String variable) {
Serial.print(variable);
Serial.println(" - Invalid integer");
}
// ------------------------------------------ dealing with settings-------------------------
void thermostat_settings(String topic, String message) {
//Serial.println(s+"Message arrived in function thermostat_settings ["+topic+"] "+message);
if (topic == "esp_thermostat/setpoint") {
handleSetpointMessage(topic, message);
}
else if (topic == "esp_thermostat/settings/proportional") {
handleProportionalMessage(topic, message);
}
else if (topic == "esp_thermostat/settings/integral") {
handleIntegralMessage(topic, message);
}
else if (topic == "esp_thermostat/settings/derivative") {
handleDerivativeMessage(topic, message);
}
else if (topic == "esp_thermostat/settings/send_interval") {
handleSendIntervalMessage(topic, message);
}
else if (topic == "esp_thermostat/settings/pid_interval") {
handlePidIntervaleMessage(topic, message);
}
else {
Serial.println("Subtopic not recognized");
}
}
void handleSetpointMessage(String topic, String message) {
extern float setpoint;
Serial.println(s+"Message arrived in function setpoint ["+topic+"] "+message);
if (message.toFloat()) {
// Convert the string to a float using atof()
setpoint = atof(message.c_str());
// Print the float value to the serial monitor
Serial.println(setpoint);
} else {
// Print an error message to the serial monitor
error_no_float(topic);
}
}
void handleProportionalMessage(String topic, String message) {
extern float Kproportional;
Kproportional = handleMqttMessageFloat ("kproportional", topic, message);
Serial.print ("Kproportional : ");
Serial.println(Kproportional);
dtostrf(Kproportional,2,2,msg_out);
mqtt.publish("esp32_thermostat/settings/kproportional", msg_out);
}
void handleIntegralMessage(String topic, String message) {
extern float Kintegral;
Kintegral = handleMqttMessageFloat ("kintegral", topic, message);
Serial.print ("Kintegral : ");
Serial.println(Kintegral);
dtostrf(Kintegral,2,2,msg_out);
mqtt.publish("esp32_thermostat/settings/kintegral", msg_out);
}
void handleDerivativeMessage(String topic, String message) {
extern float Kderivative;
Kderivative = handleMqttMessageFloat ("kderivative", topic, message);
Serial.print ("Kderivative : ");
Serial.println(Kderivative);
dtostrf(Kderivative,2,2,msg_out);
mqtt.publish("esp32_thermostat/settings/kderivative", msg_out);
}
void handleSendIntervalMessage(String topic, String message) {
extern int send_interval;
send_interval = handleMqttMessageInt ("send_interval", topic, message);
Serial.print ("Send interval : ");
Serial.println(send_interval);
dtostrf(send_interval,2,2,msg_out);
mqtt.publish("esp32_thermostat/settings/sent_interval", msg_out);
}
void handlePidIntervaleMessage(String topic, String message) {
extern int pid_interval;
pid_interval = handleMqttMessageInt ("pid_interval", topic, message);
Serial.print ("PID interval : ");
Serial.println(pid_interval);
dtostrf(pid_interval,2,2,msg_out);
mqtt.publish("esp32_thermostat/settings/pid_interval", msg_out);
}
// ------------------------------------------ dealing with PID output-------------------------
// Function to set the thermostat to a specified temperature
void sendPID_Output(float output) {
dtostrf(output,2,2,msg_out);
Serial.println("--------------------------------");
printVariable("Valve Output : ", output, "");
Serial.println("--------------------------------");
mqtt.publish("test_esp32/valvePosition", msg_out);
mqtt.publish("esp32_thermostat/valvePosition", msg_out);
// Implement this function with code to set the thermostat to the specified temperature
}
// ------------------------------------------ dealing incoming json -------------------------
String getValueFromJson(String Key, String json) {
DynamicJsonDocument doc(1024);
DeserializationError error = deserializeJson(doc, json);
if (error) {
return "Error parsing JSON";
}
JsonObject obj = doc.as<JsonObject>();
return obj[Key];
}
// ------------------------------------------ dealing with generic mqtt float msg -------------------------
//call should be handelMqttMessage("kproportional", "{kproportional":"0.5"}", "float"
float handleMqttMessageFloat (String varName, String topic, String message) {
String value;
float output;
Serial.println(s+"Message arrived in function setting/["+varName+"] ["+topic+"] "+message);
value = getValueFromJson(varName, message);
if (value.toFloat()) {
// Convert the string to a float using atof()
output = atof(value.c_str());
// Print the float value to the serial monitor
//Serial.println(Kproportional);
Serial.print("output : ");
Serial.println(output);
} else {
// Print an error message to the serial monitor
error_no_float(topic);
output = 0;
}
return (output);
}
// ------------------------------------------ dealing with generic mqtt int msg -------------------------
//call should be handelMqttMessage("kproportional", "{kproportional":"0.5"}", "float"
int handleMqttMessageInt (String varName, String topic, String message) {
String value;
int output;
Serial.println(s+"Message arrived in function setting/["+varName+"] ["+topic+"] "+message);
value = getValueFromJson(varName, message);
Serial.print("Value : ");
Serial.println(value);
if (value.toInt()) {
// Convert the string to a float using atof()
output = atoi(value.c_str());
// Print the float value to the serial monitor
//Serial.println(Kproportional);
Serial.print("output : ");
Serial.println(output);
} else {
// Print an error message to the serial monitor
error_no_int(topic);
output = 0;
}
return (output);
}