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support Witty Wifi module, set rgb led via MQTT

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This commit is contained in:
Ronald Schaten 2016-03-20 15:18:12 +01:00
parent 84dfe25160
commit 130d2a7f77
1 changed files with 23 additions and 13 deletions
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36
things.ino
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@ -21,6 +21,12 @@ extern "C" {
#define CONFIGPIN D3 // config-button is connected to this pin
#define RGBRED D8 // red led channel on witty module
#define RGBGRN D6 // green led channel on witty module
#define RGBBLU D7 // blue led channel on witty module
#define LDRPIN A0 // analog LDR input on witty module
// define default values here, overwritten by values from config.json
char mqtt_server[40];
char mqtt_port[6] = "1883";
@ -129,22 +135,21 @@ void read_sensor() {
// callback for MQTT, gets called if we receive a message
void mqtt_callback(char* topic, byte* payload, unsigned int length) {
char inData[length+1];
for(int i = 0; i < length; i++) {
inData[i] = (char)payload[i];
}
inData[length] = 0;
Serial.print("Message arrived [");
Serial.print(topic);
Serial.print("] ");
for (int i = 0; i < length; i++) {
Serial.print((char)payload[i]);
}
Serial.println();
Serial.println(inData);
// switch on the LED if an 1 was received as first character
if ((char)payload[0] == '1') {
Serial.println("setting LED to low");
digitalWrite(BUILTIN_LED, LOW); // turn the LED on
} else {
Serial.println("setting LED to high");
digitalWrite(BUILTIN_LED, HIGH); // turn the LED off
}
StaticJsonBuffer<200> jsonBuffer;
JsonObject& json = jsonBuffer.parseObject(inData);
analogWrite(RGBRED, json["red"]);
analogWrite(RGBGRN, json["green"]);
analogWrite(RGBBLU, json["blue"]);
}
// make sure we're connected to MQTT broker
@ -158,7 +163,7 @@ void mqtt_reconnect() {
// once connected, publish an announcement...
mqtt_client.publish(topic("online"), "1", true);
// ... and resubscribe:
mqtt_client.subscribe("inTopic");
mqtt_client.subscribe("setrgb");
} else {
Serial.print("failed, rc=");
Serial.print(mqtt_client.state());
@ -188,7 +193,12 @@ void setup() {
pinMode(BUILTIN_LED, OUTPUT); // set led pin as output
ticker.attach(0.5, toggle_led); // toggle led slowly during initialization
pinMode(RGBRED, OUTPUT);
pinMode(RGBGRN, OUTPUT);
pinMode(RGBBLU, OUTPUT);
pinMode(CONFIGPIN, INPUT); // flash-button on nodemcu
pinMode(LDRPIN, INPUT);
// clean FS, for testing
//SPIFFS.format();