79 lines
1.7 KiB
Arduino
79 lines
1.7 KiB
Arduino
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#include <Arduino_MKRIoTCarrier.h>
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#include <WiFiNINA.h>
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#include <ArduinoMqttClient.h>
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#include "secrets.h"
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MKRIoTCarrier carrier;
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WiFiSSLClient wifi_client;
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MqttClient mqtt_client(wifi_client);
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extern const char *wifi_ssid;
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extern const char *wifi_password;
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extern const char *mqtt_server;
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extern const char *mqtt_username;
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extern const char *mqtt_password;
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void setup(void)
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{
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Serial.begin(9600);
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Serial.println("Started");
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carrier.begin();
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carrier.display.init(240, 240);
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pinMode(TFT_BACKLIGHT, OUTPUT);
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digitalWrite(TFT_BACKLIGHT, HIGH);
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Serial.println("Connecting to WiFi");
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WiFi.begin(wifi_ssid, wifi_password);
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while (WiFi.status() != WL_CONNECTED) {
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Serial.print(".");
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delay(1000);
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}
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Serial.println("Connected to WiFi");
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mqtt_client.setUsernamePassword(mqtt_username, mqtt_password);
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if (!mqtt_client.connect(mqtt_server, 8883)) {
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Serial.print("MQTT connection failed with error code: ");
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Serial.println(mqtt_client.connectError());
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return;
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}
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Serial.println("Connected to MQTT");
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mqtt_client.subscribe("display");
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carrier.display.setCursor(50, 20);
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carrier.display.setTextSize(4);
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carrier.display.print("Waiting");
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}
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void loop(void)
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{
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int message_size = mqtt_client.parseMessage();
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if (message_size) {
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char *message = (char *)malloc(message_size + 1);
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for (int i = 0; i < message_size && mqtt_client.available(); i++) {
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message[i] = (char)mqtt_client.read();
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}
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message[message_size] = '\0';
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Serial.print("Got message: ");
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Serial.println(message);
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carrier.display.fillScreen(0x000);
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carrier.display.setCursor(50, 20);
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carrier.display.setTextSize(4);
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carrier.display.print(message);
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free(message);
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}
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}
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