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102 lines
2.7 KiB
102 lines
2.7 KiB
#include <Arduino.h>
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#include <ESP8266WiFi.h>
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#include <WiFiClient.h>
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#include <ESP8266WebServer.h>
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#include <ESP8266mDNS.h>
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#include <html.h>
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#include <Graph.h>
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#include <Sensor.h>
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const char *ssid = "NodeMCU";
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ESP8266WebServer server(80);
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Sensor accelerometer = Sensor();
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long int lastUpdate = 0;
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int acc = 0;
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Graph graphAcc = Graph(200, 50);
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void handleAccelerometer()
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{
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int16_t bias = 0;
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const int arr_size = 10000;
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char *html_code = new char[arr_size];
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memset(html_code, '\0', sizeof(char)*arr_size);
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bias += getHtml(HTML_BEGIN, *html_code, arr_size, 0);
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bias += getHtml(STYLE, *html_code, arr_size, bias);
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bias += getHtml(SCRIPT_BEGIN, *html_code, arr_size, bias);
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for (int i = 0; i != graphAcc.graphSize - 1; i++) {
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bias += snprintf((html_code+bias), arr_size - bias, "context.lineTo(%i*2, %i);", i, graphAcc.graphArray[i]);
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}
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bias += getHtml(SCRIPT_END, *html_code, arr_size, bias);
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//bias += snprintf((html_code+bias), arr_size - bias, "<br />Current accelerometer: %i", acc);
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bias += getHtml(HTML_END, *html_code, arr_size, bias);
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server.send(200, "text/html", html_code);
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delete[] html_code;
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}
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void updateAccelerometer()
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{
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if ((millis() - lastUpdate) > (1000 / graphAcc.graphUpdateRate))
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{
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acc = map(analogRead(A0), 512, 768, 200, 0);
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if (graphAcc.graphCounter < graphAcc.graphSize - 1) {
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graphAcc.graphArray[graphAcc.graphCounter] = acc;
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graphAcc.graphCounter++;
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} else {
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for(int i = 0; i != graphAcc.graphCounter; i++) {
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graphAcc.graphArray[i] = graphAcc.graphArray[i + 1];
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}
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graphAcc.graphArray[graphAcc.graphCounter] = acc;
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}
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lastUpdate = millis();
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}
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}
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void handleNotFound()
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{
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String message = "File Not Found\n\n";
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message += "URI: ";
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message += server.uri();
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message += "\nMethod: ";
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message += (server.method() == HTTP_GET) ? "GET" : "POST";
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message += "\nArguments: ";
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message += server.args();
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message += "\n";
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for (uint8_t i = 0; i < server.args(); i++)
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{
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message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
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}
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server.send(404, "text/plain", message);
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}
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void setup(void)
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{
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pinMode(A0, INPUT);
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Serial.begin(115200);
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WiFi.softAP(ssid);
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IPAddress myIP = WiFi.softAPIP();
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Serial.print("AP IP address: ");
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Serial.println(myIP);
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server.on("/accelerometer", handleAccelerometer);
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server.on("/", []() {
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server.send(200, "text/plain", "http://192.168.4.1/accelerometer");
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});
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server.onNotFound(handleNotFound);
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server.begin();
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Serial.println("HTTP server started");
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}
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void loop(void)
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{
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updateAccelerometer();
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server.handleClient();
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}
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