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Informations about the package phanviz
PhAnviz - PHP Client for Anviz devices.
This is "limited" implementation of CommsProtocol for Anviz EP300 devices. Limited because it does not contain functions for each possible command, but just provides a general way to send commands and process responses in proper way.
Why I created another one client for Anviz devices
Initially I tried to use Jerko Tisler's jtisler/PHPAnviz library. That is great piece of work, but I found it a bit complicated due to dependency on gearman and it should have anviz-server app running. Finally it requires Anviz device to operate in client mode and I think the way Jerko offered is good for handling connections from Anviz when it operates in client mode. I just was need simple "syncronous" client application running by cron, which will send commands and save T&A records to database.
Another reason is that I detected some unexpected stuff in responses from Anviz. It still was valid responses, but with additional pieces. After parsing I found that those pieces are coming with 0xDF acknowlendge code, which is described in Comms protocol as "Sent T&A record in real time", but no idea why these pieces are appearing in response for many different commands.
Example: I'm sending Get record information command (code 0x3C) and expecting response with ACK code equal to 0xBC. Like below:
But sometimes response may contain additional pieces with 0xDF ACK code. Like this:
If anyone have idea why it's happening I have created stackoverflow question for it
I can conclude that Anviz sends "real-time" TA records (pieces with 0xDF) when socket created for sending other commands.
The worst thing is that it does not return that TA records when we trying to fetch "new" TA records. It causes that some TA records may be lost by client. In order to overcome it I implemented "callback driven" processing of commands' responses and it allows to collect TA records from 0xDF pieces in responses for any command.
All versions of phanviz with dependencies
ext-json Version *