Check for finite numbers before inserting the data into the database; Link against math library; Updated Readme

README.md

@@ -1,7 +1,12 @@
 # dht22 Temperature Stats
 
+## Raspberry Pi
 
-## mySQL
+### Dependencies
+
+`apt install mariadb-server mariadb-client libmariadbclient-dev libmariadbclient-dev-compat libconfig-dev wiringpi libcurl4-openssl-dev (-s)`
+
+### mySQL
 
 Login: `mysql --user=root --password=password`
 
@@ -13,14 +18,40 @@ Create database: `create database dhtstats;`
 
 Use database: `use dhtstats`
 
-Create new table: `CREATE TABLE stats (id MEDIUMINT NOT NULL AUTO_INCREMENT, node_id int not null, pin int not null, humidity FLOAT NOT NULL, temperature FLOAT NOT NULL, isoutside int not null, gm3 float not null, created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP, PRIMARY KEY (id) );`
+Create new table: 
+```
+CREATE TABLE stats (id MEDIUMINT NOT NULL AUTO_INCREMENT, node_id int not null, pin int not null, humidity FLOAT NOT NULL, temperature FLOAT NOT NULL, isoutside int not null, gm3 float not null, created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP, PRIMARY KEY (id) );
+```
+and
+```
+CREATE TABLE average_stats (id MEDIUMINT NOT NULL AUTO_INCREMENT, humidity FLOAT NOT NULL, temperature FLOAT NOT NULL, gm3 float not null, isoutside int not null, created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP, PRIMARY KEY (id) );
+```
+
+
+
 
 Show all entries in table: `select * from stats;`
 
-## Dependencies
+### Compile & Install
+
+To compile and install humidityPi use this oneliner: `make && make install` 
+
+### Configuration
+
+#### Settings
+
+The settings file ist located under `/etc/humiditypi/settings.cfg`
+
+#### Cronjob
+
+If you like to run humidityPi in a desired time intervall you can enable a cronjob by entering `crontab -e` and paste the following to the bottom of the text file:
+
+``` bash
+#Cronjob that will repeat every minute
+#Pipe the output to /dev/null to suppress mails from cron
+* * * * * humiditypi > /dev/null
+```
 
-### Raspberry Pi
-`apt install mariadb-server mariadb-client libmariadbclient-dev libmariadbclient-dev-compat libconfig-dev wiringpi libcurl4-openssl-dev (-s)`
 
 ### ESP-8266
 [aRest](https://github.com/marcoschwartz/aREST)

RaspberryPi/main.c

@@ -8,6 +8,7 @@
 #include "restcurl.h"
 #include <string.h>
 #include "calculate.h" //for comparing the nodes
+#include <math.h>
 
 //Temporary include
 #include "calculate.h"
@@ -115,8 +116,13 @@ int main(void) {
     float avgOutsideHumidity = avhum_in / outCount;
     
     //Insert the results into the database
-    //insertDataAverages(avgInsideTemperature, avgInsideHumidity, absoluteHumidityFloat(avgInsideTemperature, avgInsideHumidity));
-    //insertDataAverages(avgOutsideTemperature, avgOutsideHumidity, absoluteHumidityFloat(avgOutsideTemperature, avgOutsideHumidity));
+    if (isfinite(avgInsideHumidity) && isfinite(avgInsideTemperature)) {
+        insertDataAverages(avgInsideTemperature, avgInsideHumidity, absoluteHumidityFloat(avgInsideTemperature, avgInsideHumidity), 0);
+    }
+    if (isfinite(avgOutsideHumidity) && isfinite(avgOutsideTemperature)) {
+        insertDataAverages(avgOutsideTemperature, avgOutsideHumidity, absoluteHumidityFloat(avgOutsideTemperature, avgOutsideHumidity), 1);
+    }
+    
     printf("Averages:\n| Inside temperature: %f\n| Inside humidity: %f\n| Outside temperature: %f\n| Outside humidity: %f\n", avgInsideTemperature, avgInsideHumidity, avgOutsideTemperature, avgOutsideHumidity);
 
     //free

RaspberryPi/makefile

@@ -5,7 +5,7 @@ VERSION = 1.0
 CC      = cc
 CFLAGS  = -Wall -g -D_GNU_SOURCE -D_REENTRANT -DVERSION=\"$(VERSION)\" `mysql_config --cflags`
 #LDFLAGS = -lm -lpthread `gtk-config --cflags` `gtk-config --libs` -lgthread
-LDFLAGS = -lwiringPi -lconfig `mysql_config --libs` -lcurl
+LDFLAGS = -lwiringPi -lconfig `mysql_config --libs` -lcurl -lm
 
 OBJ = main.o dht22.o sendmysql.o configreader.o cJSON.o restcurl.o calculate.o
 
@@ -20,6 +20,10 @@ clean:
 	rm -r *.o
 
 install:
-	sudo cp humiditypi /usr/local/bin
+	sudo cp humiditypi /usr/bin
 	if [ ! -d /etc/humiditypi ]; then sudo mkdir /etc/humiditypi; fi
 	sudo cp settings.cfg /etc/humiditypi
+
+uninstall:
+	sudo rm /usr/bin/humiditypi
+	rm -r /etc/humiditypi

RaspberryPi/sendmysql.c

@@ -102,7 +102,7 @@ void insertDataAverages(float temperature, float humidity, float gm3, int isouts
    
     char *pquerystring = NULL;
     if (-1 == asprintf(&pquerystring, 
-    "INSERT INTO stats (humidity, temperature, gm3, isoutside) VALUES (%f, %f, %f, %i)", humidity, temperature, absoluteHumidityFloat(temperature, humidity), isoutside)) {
+    "INSERT INTO average_stats (humidity, temperature, gm3, isoutside) VALUES (%f, %f, %f, %i)", humidity, temperature, absoluteHumidityFloat(temperature, humidity), isoutside)) {
         perror("asprintf() failed");
     } else {
         if (mysql_query(conn, pquerystring)) {