# this main directory contains the primary files to run the program
To run the main program: simply execute start.sh
	You need to edit the prefix= and name= lines in start.sh 
	For example, the gateway's certificate is: cb11952a43-certificate.pem.crt
	so I would set the prefix to cb11952a43


# stubs/ 
This directory contains the same system files but the subsystem classes are all configured to return a value of 55 and not connect to GPOI or board specific I/O
this is useful for testing the system as-is without the hardware, it also allows us to indirectly measure the sensor board's power requirements

# config/ 
this directory contains the special configuration files for the raspberry pi OS that I needed to configure for the gateway and nodes

# tests/
This directory contains 2 differnet testing programs that I used to test system performance
to start just run start_[iterate/latency] and modify it to include your certificates. 
start_iterate.sh will walk through each sensor system and reqest the value from
it, wait until it recieces a response and ask for the next sensor. 
Useful for testing power load as this will activate differnt sensors

start_latency.sh will test the latency with 20 requests and responses and calculate
the average request latency from the time sent to the time received and print
the calculation


# The MQTT message layout along with supported commands:
My MQTT message topology is: sensors/{device}/{name}

sensors/temp/gateway
"get" : "value"
sensors/pressure/gateway
"get" : "value"
sensors/humidity/gateway
"get" : "value"
sensors/altitude/gateway
"get" : "value"

sensors/soil/gateway
"get" : "value"

sensors/water/gateway
"get" : "state" # also "value"
"get" : "total"
"get" : "cumulative"
"setTime" : "10"    # accepted range is 1-122
"set" : "on"
"set" : "off"
"set" : "clear"

sensors/led/gateway
"get" : "state" # also "value"
"set" : "on"
"set" : "off"

sensors/info/gateway
"get" : "bulk"

sensors/cmd/gateway
"get" : "uptime"
"get" : "timestamp"   #used for testing
"deviceState" : "disconnect"
"deviceState" : "reboot"
"deviceState" : "halt"

My program allows the gateway to also be a sensor/measuring device but it is not required