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March 12, 2016 23:33
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FastLED Crashes MQTT
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#include <ESP8266WiFi.h> | |
#include <PubSubClient.h> | |
#include "FastLED.h" | |
// UPDATE | |
const char* ssid = "....."; | |
const char* password = "...."; | |
const char* mqtt_server = "192.168.0.1"; | |
#define LED_COUNT 52 | |
#define PIN_LEDS D2 | |
// END | |
WiFiClient espClient; | |
PubSubClient client(espClient); | |
CRGB leds[LED_COUNT]; | |
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("."); | |
} | |
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 acive 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..."); | |
// Attempt to connect | |
if (client.connect("testfastledcrash")) { | |
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); | |
FastLED.addLeds<NEOPIXEL, PIN_LEDS>(leds, LED_COUNT); | |
FastLED.setBrightness(120); | |
for (uint8_t i = 0; i < 1; i++) { | |
for (uint8_t dot = 0; dot < LED_COUNT; dot++) { | |
leds[dot] = CRGB::Blue; | |
FastLED.show(); | |
delay(20); | |
leds[dot + 1] = CRGB::Red; | |
FastLED.show(); | |
delay(20); | |
} | |
} | |
} | |
void loop() { | |
if (!client.connected()) { | |
reconnect(); | |
} | |
client.loop(); | |
long now = millis(); | |
if (now - lastMsg > 2000) { | |
lastMsg = now; | |
++value; | |
snprintf (msg, 75, "hello world #%ld", value); | |
Serial.print("Publish message: "); | |
Serial.println(msg); | |
client.publish("outTopic", msg); | |
} | |
} |
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