Hello,
Something in the new updates caused a problem with previously working code.
I tried the suggestions I could find through searching to no avail.
Here's the program code......
//This File Works Perfectly on Dec 31, 2017 (With DHT11) (Not DHT22)
#include"dht.h" // Including library for dht
#include<LiquidCrystal.h>
LiquidCrystal lcd(14,15,16,17,18,19);
#include<Timer.h>
Timer t;
#include <SoftwareSerial.h>
SoftwareSerial Serial1(2, 3);
#define dht_dpin 12
#define heart 13
dht DHT;
const char *workaround = "OK";
const char *api_key="xyz"; // Enter your Write API key from ThingSpeak
static char postUrl[150];
float humi;
float tem;
//int tem,humi;
float temConv;
float humiConv;
void httpGet(String ip, String path, int port=80);
void setup()
{
lcd.begin(16, 2);
lcd.clear();
lcd.print(" Humidity ");
lcd.setCursor(0,1);
lcd.print(" Measurement ");
delay(2000);
lcd.clear();
lcd.print("Circuit Digest ");
lcd.setCursor(0,1);
lcd.print("Welcomes You");
delay(2000);
Serial1.begin(115200);
Serial.begin(115200);
lcd.clear();
lcd.print("WIFI Connecting");
lcd.setCursor(0,1);
lcd.print("Please wait....");
Serial.println("Connecting Wifi....");
connect_wifi("AT",1000);
connect_wifi("AT+CWMODE=1",1000);
connect_wifi("AT+CIPSTA=\"192.168.003.56\",\"192.168.003.001\",\"255.255.255.000\"",10000);
connect_wifi("AT+CWQAP",1000);
connect_wifi("AT+RST",5000);
connect_wifi("AT+CWJAP=\"tcharlie\",\"missusa\"",10000);
Serial.println("Wifi Connected");
lcd.clear();
lcd.print("WIFI Connected.");
pinMode(heart, OUTPUT);
delay(2000);
t.oscillate(heart, 1000, LOW);
t.every(20000, send2server);
}
void loop()
{
DHT.read11(dht_dpin);
lcd.setCursor(0,0);
lcd.print("Humidity: ");
humi=DHT.humidity;
lcd.print(humi); // printing Humidity on LCD
lcd.print(" % ");
lcd.setCursor(0,1);
lcd.print("Temperature:");
tem=DHT.temperature;
lcd.print(tem); // Printing temperature on LCD
lcd.write(1);
lcd.print("C ");
delay(2000);
t.update();
}
void send2server()
{
char tempStr[8];
char humidStr[8];
temConv=(tem*1.8)+32;
//temConv=tem;
// temConv=temConv-1.4; //Correction for DHT11-1
humiConv=humi-9; // Correction for DHT11-1
dtostrf(temConv, 5, 3, tempStr);
dtostrf(humiConv, 5, 3, humidStr);
sprintf(postUrl, "update?api_key=%s&field1=%s&field2=%s",api_key,humidStr,tempStr);
httpGet("api.thingspeak.com", postUrl, 80);
}
//GET https://api.thingspeak.com/update?api_key=SIWOYBX26OXQ1WMS&field1=0
void httpGet(String ip, String path, int port)
{
int resp;
String atHttpGetCmd = "GET /"+path+" HTTP/1.0\r\n\r\n";
//AT+CIPSTART="TCP","192.168.20.200",80
String atTcpPortConnectCmd = "AT+CIPSTART=\"TCP\",\""+ip+"\","+port+"";
connect_wifi(atTcpPortConnectCmd,1000);
int len = atHttpGetCmd.length();
String atSendCmd = "AT+CIPSEND=";
atSendCmd+=len;
connect_wifi(atSendCmd,1000);
connect_wifi(atHttpGetCmd,1000);
}
void connect_wifi(String cmd, int t)
{
int temp=0,i=0;
while(1)
{
lcd.clear();
lcd.print(cmd);
Serial.println(cmd);
Serial1.println(cmd);
while(Serial1.available())
{
if(Serial1.find("workaround"))
i=8;
}
delay(t);
if(i>5)
break;
i++;
}
if(i==8)
{
Serial.println("OK");
lcd.setCursor(0,1);
lcd.print("OK");
}
else
{
Serial.println("Error");
lcd.setCursor(0,1);
lcd.print("Error");
}
}
And here are the errors.....
C:\Users\Gumby\Documents\Arduino\HumidityTemp_ThingSpeak_3_WORKING\HumidityTemp_ThingSpeak_3_WORKING.ino: In function 'void connect_wifi(String, int)':
C:\Users\Gumby\Documents\Arduino\HumidityTemp_ThingSpeak_3_WORKING\HumidityTemp_ThingSpeak_3_WORKING.ino:121:35: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
if(Serial1.find("workaround"))
^
