Editing SoftwareOverview

==Raspberry Pi Code== ===collect=== * Read the config file (below) to map sensor serial numbers to parameter names * collect the data from the sensors * for any missing sensors, log an error * for any unlisted sensors, collect the data with the serial number * log any internal status messages * write the output of the data collection subroutines to a timestamped file in the data queue directory ===send=== * if there's no data queued up, just quit * Read the config file with the credentials username and password. * open a connection to the mothershp * send data & logs (via HTTP / HTTPS POST) found in the queue directory * delete the queued data if the post is successful * receive a command block from the mothership (contents & function to be determined.) ===config files=== * one file containing mothership data posting credentials * map of sensor serial numbers to parameter names e.g. 0008021eb5ed --> "T1" ** map will also contain a flag to indicate that the sensor is there but should be ignored ==Mothership Code== ===receive=== * CGI * accept a posting from the RPi containing ** credentials ** data ** logs * V1: put the posting into a queue file for later processing & storage * V2: store the received data into the database * reply with an acknowledgement / command block * forward any error messages ===post to MRTG== We'll use MRTG to generate graphs (at least in the beginning.) * for each client, look at the last timestamp * select the data from the database posted since then * post that to MRTG. ===monitor=== * check the database for recent postings from all clients. * alarm when a client is missing for e.g. more than 6 hours

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This change is a minor edit.

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