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173 lines
4.5 KiB
173 lines
4.5 KiB
#include <math.h>
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//--- made by SKA ---
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//--- test EtherEncLib
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// adapted by Renato Aloi
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// May 2015
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// removed SD Card part for future implementation
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#include <SPI.h>
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#include <EtherEncLib.h>
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#if (ESP8266)
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#include <pgmspace.h>
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#else
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#include <avr/pgmspace.h>
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#endif
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static unsigned char ipaddr[] = { 192, 168, 1, 125 };
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static unsigned char macaddr[] = { 0x00, 0x11, 0x22, 0x44, 0x00, 0x25 };
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EtherEncLib eElib(80);
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const PROGMEM char resp200Txt[] = {"HTTP/1.0 200 OK\n\rContent-Type: text/html\n\rPragma: no-cache\n\r\n\r"};
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//sensor start
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int DustSensePin = 13;
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//copy and paste for 50 zeros
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//this should probably not be global...
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//Int means max 65535 or so. May need to move to long
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//making this too high runs into memory problems
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//This resolution will be relatively good enough for now.
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//If we need more space, then store only the first value in an unsigned int or long, then
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//bit shift it down to reduce size, and store in array in a lower size var.
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unsigned int reading[30] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
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unsigned long sampletime_ms = 60000;//sample 30s ;
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unsigned long starttime = 0;
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unsigned char x = 0;
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unsigned char toplimit = 0;
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unsigned long sum = 0; //highest number possible - 32 bit unsigned, so 4 billion
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unsigned int average = 0;
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unsigned int sumcutdown = 0;
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void setup()
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{
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Serial.println(F("Setup begin"));
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#if (ESP8266)
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Serial.begin(115200);
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pinMode(5,OUTPUT); //--- ? -- SS pin must be output # by Renato Aloi
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#else
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Serial.begin(9600);
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pinMode(8,OUTPUT); //--- ? -- SS pin must be output # by Renato Aloi
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#endif
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eElib.begin(ipaddr,macaddr);
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Serial.println(F("------ program start -----------"));
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//Serial.println(F("NO SDCARD version")); // by Renato Aloi
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pinMode(DustSensePin,INPUT);
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starttime = millis();//get the current time;
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}
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void loop() {
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reading[x] = pulseIn(DustSensePin, LOW, 500000);
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//Print out readings on serial, as they come
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if (reading[x] != 0){
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Serial.println(reading[x]);
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x=x+1;
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if(x>50){
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x = 0;
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}
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}
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if ((millis()-starttime) > sampletime_ms){
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//reset these, no need to display on webpage anymore
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sum = 0;
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average = 0;
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toplimit = x; // don't read the zeros
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/*
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if(toplimit == 0){
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toplimit = 1; //to avoid divide by zero, in case sum / toplimit is both zero
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}
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*/
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for (x=0; x<toplimit; x++){
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sum = sum + reading[x];
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}
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average = sum / toplimit;
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//see work docs. Bit shift to allow for lower resolution for built in print functions.
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//outputting an int - 16 bit, but we originally have a 32 bit)
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sumcutdown = sum >> 4;
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//Serial.print("Average Get!: ");
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//Serial.println(average); //average when 0 is 65535, so it's invalid (dividing by zero - sum divided by top limit which are both zero)
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//but we don't even want the average. It's just for testing here.
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Serial.print("Sum Get!: ");
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Serial.println(sum); //this is what we care about
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Serial.print("Sumcutdown Get!: ");
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Serial.println(sumcutdown); //bit shifted
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//reset everything that can be reset after a minute
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x = 0;
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toplimit = 0;
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for (x=0; x<toplimit; x++){
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reading[x] = 0;
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}
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starttime = millis();
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}
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if ( eElib.available() )
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{
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Serial.println(eElib.getParams());
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eElib.print((char *)&resp200Txt[0],strlen_P(&resp200Txt[0]));
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if (eElib.isIndexHtml)
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{
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eElib.print("<pre><H1>Hello World!</H1>");
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//eElib.print("<form method=POST>");
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eElib.print("<br>");
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eElib.print("The Sum is: ");
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eElib.print((unsigned)sumcutdown);
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//eElib.print("</form></body>");
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eElib.print("</pre>");
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}
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/*
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else if (eElib.isPost)
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{
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eElib.print("<HTML><body><H1>POST Params: ");
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eElib.print(eElib.getParams());
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eElib.print("</H1></body>");
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eElib.print("</HTML>");
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}
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else if (eElib.isGet)
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{
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eElib.print("<HTML><body><H1>GET Params: ");
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eElib.print(eElib.getParams());
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eElib.print("</H1></body>");
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eElib.print("</HTML>");
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}*/
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eElib.close();
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}
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}
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//unused
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/*
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int ipow(int base, int exp)
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{
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int result = 1;
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for (;;)
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{
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if (exp & 1)
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result *= base;
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exp >>= 1;
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if (!exp)
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break;
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base *= base;
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}
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return result;
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}*/
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