add support for mqtt credentials

README.md

@@ -0,0 +1,50 @@
+Why this fork?
+==============
+
+This is my fork of cornetp/eagle-owl. Eagleowl is already a fantastic piece of software, but it's quite oriented to be
+executed as a desktop program. Since what I need are just get the power values from a Raspberry Pi, in order to send them
+to external services, I've made some changes to the code:
+
+- Removed Sqlite DB support amb web interface.
+- Removed most debug output and file writing, in order to not tear down SD cards.
+- Added several different configurable outputs:
+  - Text file: Power readings will be written to a simple text file, one per line.
+  - MQTT: Publish power values to a MQTT host
+  - System command: Custom command to be executed for every power value (NOT IMPLEMENTED YET)
+- Updated configuration file syntax, in order to support all new options, and use standard config file parsing mechanisms
+(libconfig)
+
+Those new output options allow things impossible to achieve with official version, like minimal disk writing, or even no
+disk writing at all (using MQTT to publish power values), thus allowing eagle-owl to be executed from a read only file
+system. Text file support also makes easier to get raw power values, without the need of sqlite queries or complex shell
+script acrobatics (using screen or similar tools).
+
+What's changed
+==============
+
+Usage is more or less the same as the mainstream version. Main difference is the config file, which should be now
+something like this:
+
+```
+# eagleowl configuration file
+
+# Execute a command for every consumption value (NOT YET IMPLEMENTED)
+#system_command=""
+
+# Output consumption values to a file in disk. Disabled by default
+#output_file=""
+
+# MQTT broker connection information for publishing values as a MQTT topic
+#mqtt_host="mqttbroker"
+#mqtt_port=1883
+#mqtt_topic="eagleowl/w"
+
+# install_path: path where the eagleowl software is installed
+install_path="/opt/eagleowl"
+```
+
+It's still needed to specify install path, and then some output method should be activated by uncommenting the corresponding
+lines and filling the right values, which are pretty straightforward.
+
+Jesús Jiménez <[email protected]>
+

etc/eagleowl.conf

@@ -1,7 +1,16 @@
 # eagleowl configuration file
 
+# Execute a command for every consumption value (NOT YET IMPLEMENTED)
+#system_command=""
+
+# Output consumption values to a file in disk. Disabled by default
+#output_file=""
+
+# MQTT broker connection information for publishing values as a MQTT topic
+#mqtt_host="mqttbroker"
+#mqtt_port=1883
+#mqtt_topic="eagleowl/w"
+
 # install_path: path where the eagleowl software is installed
-install_path=/opt/eagleowl
-main_db_name=eagleowl.db
-stat_db_name=eagleowl_stat.db
+install_path="/opt/eagleowl"
 

src/Makefile

@@ -1,17 +1,14 @@
 CROSS_COMPILE ?=
 
 CM160 = cm160
-DB_IMPORT = db_import
 
 CC	:= $(CROSS_COMPILE)gcc
 LD	:= $(CROSS_COMPILE)gcc
 CFLAGS	:= -W -Wall -Wno-multichar -O3 #-Werror
-CFLAGS	+= -Isqlite-autoconf-3071300
 LDFLAGS :=
-LIBS	:= -lusb -lpthread -ldl
+LIBS	:= -lusb -lconfig -lmosquitto -lpthread -ldl
 
-OBJ_CM160 := cm160.o usb_utils.o db.o demonize.o sqlite-autoconf-3071300/sqlite3.o
-OBJ_DBIMP := db_import.o db.o sqlite-autoconf-3071300/sqlite3.o
+OBJ_CM160 := cm160.o usb_utils.o demonize.o
 
 all: $(CM160) $(DB_IMPORT)
 
@@ -21,10 +18,6 @@ all: $(CM160) $(DB_IMPORT)
 $(CM160): $(OBJ_CM160)
 	$(LD) $(LDFLAGS) -o $@ $(OBJ_CM160) $(LIBS)
 
-$(DB_IMPORT): $(OBJ_DBIMP)
-	$(LD) $(LDFLAGS) -o $@ $(OBJ_DBIMP) $(LIBS)
-
 clean:
-	-$(RM) *.o sqlite-autoconf-3071300/*.o
+	-$(RM) *.o
 	-$(RM) $(CM160)
-	-$(RM) $(DB_IMPORT)