HTTP Get Delay?
Posted: Sun Dec 13, 2015 5:29 pmHi all! I'm fairly new to Arduino, so I'm looking for a little help...
I've got a sketch written to pull some data from the internet, then update some WS2812 LEDs accordingly. Everything works really well, except that the light patterns have to stop whenever I pull new data from the internet. I can set an interval to only check for new data every X seconds, but that results in a loss of responsiveness.
Does anyone know how to keep the code moving forward while the ESP8266 is pulling the data?
Here's the important parts of my code:
I've got a sketch written to pull some data from the internet, then update some WS2812 LEDs accordingly. Everything works really well, except that the light patterns have to stop whenever I pull new data from the internet. I can set an interval to only check for new data every X seconds, but that results in a loss of responsiveness.
Does anyone know how to keep the code moving forward while the ESP8266 is pulling the data?
Here's the important parts of my code:
Code: Select all
//Include WiFi libraries
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
//Include NeoPixel libraries
#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h>
#endif
//Define the Pin # the NeoPixel data is being sent on
#define PIN 5
// Define WiFi variables
const char* ssid = "MYSSID";
const char* password = "Passwords";
//Set location to obtain current setting
char server[]="192.168.1.XXX";
WiFiClient client;
String justState = "";
String currState = "";
String currentState = "";
boolean readingState = false;
uint32_t numColors = 0;
uint8_t stateStyle = 0;
uint8_t stateColor = 0;
int *colorArray;
unsigned long currentMillis = 0;
unsigned long previousMillis = 0;
Adafruit_NeoPixel strip = Adafruit_NeoPixel(50, PIN, NEO_GRB + NEO_KHZ800);
void setup(void)
{
Serial.begin(115200);
// Connect to WiFi network
WiFi.begin(ssid, password);
Serial.print("\n\r \n\rWorking to connect");
// Wait for connection
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
strip.begin();
strip.show();
}
void loop()
{
if (millis() > previousMillis + 30000 || previousMillis == 0) {
previousMillis = millis();
stateStyle = getState("Lights_Christmas_Selection");
stateColor = getState("Lights_Christmas_Color");
}
displayLights(stateStyle, stateColor); // This function runs the patterns / colors
}
int getState(String item) {
currentState = "";
if (client.connect(server, 8080)) {
Serial.println("Connected");
client.println("GET /rest/items/" + item + "/ HTTP/1.0");
client.println();
if (client.available()) {
Serial.println("Making HTTP request");
while (client.available()) {
char c = client.read();
currentState += c;
if (currentState.endsWith("<state>")) {
readingState = true;
} else if (readingState) {
if (!currentState.endsWith("</state>")) {
currState += c;
} else {
readingState = false;
justState = currState.substring(0, currState.length()-7);
client.stop();
currState = "";
}
}
}
Serial.print(item);
Serial.print(" = ");
Serial.println(justState);
} else {
Serial.println("Not Available");
}
} else {
Serial.println("Not Connected");
}
// Send the output back as an integer
return justState.toInt();
}