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eversolar.pl
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#! /usr/bin/perl
#
# bugs to fix : warnings, double entries to pvlog, max of the day
#
# Eversolar inverter data logger
# - Based on Steve Cliffe's <[email protected]> Eversolar PMU logger script (http://www.sjcnet.id.au/computers/eversolar-inverter-monitoring-with-linux)
# - Tested and known to work with the following inverters:
# -- TL1500AS Inverter connected to an ethernet to serial converter
# -- TL2000 (multiple) connected to a Raspberry Pi
# -- TL3000 (multiple) connected to a Raspberry Pi
# -- Volta TL3000
# - Supports upload of data to pvoutput.org. Please consider joining the "Eversolar perl loggers" team if you use this script - http://pvoutput.org/ladder.jsp?tid=485
#
# Kayne Richens <[email protected]>
#
# Version 0.1 - September 30 2011
# - first release
# Version 0.2 - October 03 2011
# - fixed bug that stopped script when inverter shut down at night
# - moved config options to a config file (eversolar.ini)
# - added support for direct serial comms (no eth2ser converter) - NOT TESTED!
# - added "-m 30" (max run time 30 seconds) to curl so script doesn't hang when pvoutput.org goes down
# Version 0.3 - October 12 2011
# - added support to upload generation to smartenergygroups.com (SEG)
# Version 0.4 - October 16 2011
# - added a http server, so the inverter can be accessed via the browser
# - experimental multiple inverter support started - not working yet
# Version 0.5 - October 26 2011
# - added paging to web server /log request
# Version 0.6 - November 18 2011
# - more fixes to inverter re-connect after overnight shutdown
# - added max daily PAC to web interface
# Version 0.7 - November 20 2011
# - added debugs to help with inverter re-connect after overnight shutdown
# - added the time that the max daily PAC occured to web interface
# Version 0.8 - November 21 2011
# - fixed bug in 0.7 that stopped inverter connecting
# Version 0.9 - November 23 2011
# - added a sleep after inverter wakes and powers up the ethernet to serial converter, to allow it time before initiating the connection
# - fixed the log display in the web interface when the log is not stored in the default location
# Version 0.10 - June 7 2012
# - added temp and volts (PV) to pvoutput.org upload
#
# Code move to http://code.google.com/p/eversolar-monitor/ - August 31 2012
#
#
# Version 0.11 - March 28 2013 by Claus Stenager
# - added summary of more inverters, requires change in index.html
# Version 0.12 - April 21 2013 by Henrik Jørgensen
# - added output to pv-log.com
# - fixed ripple on pvoutput with more inverters due to global min in pmu_log - hat tip leifnel
# - fixed temperature bug on negative centigrades - leifnel
# - faster connections from multiple inverters, as we are polling aggresively if no inverters are connected
# - It's now possible to specify an ini file from command line - Mads Lie Jensen
# - Moved web server back into mail pl file to encompass the ini file specified from command line
# - several minor changes, cleaning up code
# - fixed issue with max production today
# - stopped deleting the webfile when last inverter shut down, effectively enabling the webpage after inverter shut down
# - Added severity to logging, and only writes to logfile if debugging is set sufficiently high
# Severity 1 is high severity, severity 3 is an informal message, setting debug to 3 creates a very long logfile, and slows web interface with lots of unimportant messages
# Version 0.13 - April 21 2013 by Henrik Jørgensen
# - Now even faster connect, as it picks out serial numbers from database for immediate connection to inverters - Morten Friis
# - A few minor bugfixes
# Version 0.14 - Jan 31st 2015 by Henrik Jørgensen
# - Updated to handle total production over 6553,5 KWh by reading and adding two further bytes of production data
#
# Code move to https://github.com/solmoller/eversolar-monitor - August 20 2015
#
# Version 0.15 - Sep 5th 2015 by Henrik Jørgensen
# - Bugfix september 5th 2015 for serial numbers containing null
# Version 0.16 - January 21th 2017
# - added rolling 365 days production (not a year, as leap years will skew data)
# Version 0.17 - december 3rd 2017 by Henrik Jørgensen and Reneke43
# - updated rolling 365 days to update historical data more intelligently
# - added Domoticz integration supplied by Reneke43
# Version 0.171 - February 3rd 2017 by Henrik Jørgensen and Ctenberge
# - fixed comment bug in Domoticz integration
# Version 0.18 - Changes by KiekerJan
# - Added options to control log cleanup and log output to file
# - Perltidy causes a number of whitespace and enters around culry brackets
# - Solved bug in send_request which returns FALSE instead of 0 (fixes #48)
# - Added loglevel 4 for message contents
# - Catch errors when writing to socket or reading from TCP socket, this solves errors caused by remote disconnect
# - Added timer delay when searching for TCP socket, when a socket cannot be connected, we wait a bit longer
# - Fixed bug where serial number can contain non-ascii characters (fixes #47)
# - Use the daily table in the sqlite db to store the total production and maximum power of the day
# - Use the daily table instead of the inverter table to retrieve the inverter serial numbers and total production (for production of the last 365 days)
# - Make aggressive polling for new inverters a little less aggressive by adding a delay when nothing is found
# - Fixed a bug where webpage is not shown when config option database_log is off (fixes #43)
# - Make errors returned by upload to pvoutput and influxdb more visible in log
# Version 0.19 january 2022 - Changes by nagydavid
# - 'sudo apt install -y mosquitto mosquitto-clients' has to be installed
# - Added MQTT functionalities.
# - Added MQTT Auto Diascovery for Home Assistant
#
# Version 0.191 january 2022 - Changes by Henrik Jørgemsem
# - Changed naming of Home Assistant Entities, so they group nicely in HASS
#
# Eversolar communications packet definition:
# 0xaa, 0x55, # header
# 0x00, 0x00, # source address
# 0x00, 0x00, # destination address
# 0x00, # control code
# 0x00, # function code
# 0x00, # data length
# 0x00...0x00 # data
# 0x00, 0x00 # checksum
#
use IO::Socket::INET;
use AppConfig;
use JSON;
use DBI;
use Net::FTP;
use File::Copy;
use POSIX;
use utf8;
#use warnings;
our $config = AppConfig->new();
$config->define("eth2ser_ip_address=s");
$config->define("eth2ser_port=s");
$config->define("serial_port=s");
$config->define("pvoutput_enabled=s");
$config->define("pvoutput_api_key=s");
$config->define("pvoutput_system_id=s%");
$config->define("pvoutput_status_interval_mins=s");
$config->define("pvoutput_add_status_url=s");
$config->define("options_debug=s");
$config->define("options_query_inverter_secs=s");
$config->define("options_log_file=s");
$config->define("options_output_to_log=s");
$config->define("options_clean_log=s");
$config->define("options_communication_method=s");
$config->define("options_strings=s");
$config->define("pvlog_enabled=s");
$config->define("pvlog_FTPServeradresse=s");
$config->define("pvlog_interval=s");
$config->define("pvlog_username=s");
$config->define("pvlog_Password=s");
$config->define("domoticz_enabled=s");
$config->define("domoticz_address=s");
$config->define("domoticz_port=s");
$config->define("domoticz_username=s");
$config->define("domoticz_password=s");
$config->define("domoticz_IDX=s");
$config->define("influxdb_enabled=s");
$config->define("influxdb_address=s");
$config->define("influxdb_port=s");
$config->define("influxdb_dbname=s");
$config->define("influxdb_panelname=s");
$config->define("mqtt_enabled=s");
$config->define("mqtt_inverter_model=s");
$config->define("mqtt_host=s");
$config->define("mqtt_port=s");
$config->define("mqtt_enable_pass=s");
$config->define("mqtt_user=s");
$config->define("mqtt_password=s");
$config->define("mqtt_topic_prefix=s");
$config->define("mqtt_ha_discovery=s");
$config->define("seg_enabled=s");
$config->define("seg_upload_interval_mins=s");
$config->define("seg_site_id=s");
$config->define("seg_device=s");
$config->define("seg_power_stream=s");
$config->define("seg_energy_stream=s");
$config->define("seg_api_url=s");
$config->define("web_server_enabled=s");
$config->define("web_server_port=s");
$config->define("database_log=s");
#$config->file("eversolar.ini");
$config->define("configFile=s");
$config->args();
if ( $config->configFile eq '' ) {
$config->configFile('eversolar.ini');
}
-e $config->configFile or die "Configfile '", $config->configFile, "' not found\n";
$config->file( $config->configFile );
pmu_log( "Severity 1, Configfile is: " . $config->configFile );
%CTRL_FUNC_CODES = (
"REGISTER" => { # CONTROL CODE 0x10
"OFFLINE_QUERY" => {
"REQUEST" => [ 0x10, 0x00 ],
"RESPONSE" => [ 0x10, 0x80 ]
},
"SEND_REGISTER_ADDRESS" => {
"REQUEST" => [ 0x10, 0x01 ],
"RESPONSE" => [ 0x10, 0x81 ]
},
"RE_REGISTER" => {
"REQUEST" => [ 0x10, 0x04 ],
"RESPONSE" => ""
}
},
"READ" => { # CONTROL CODE 0x11
"QUERY_INVERTER_ID" => {
"REQUEST" => [ 0x11, 0x03 ],
"RESPONSE" => [ 0x11, 0x83 ]
},
"QUERY_NORMAL_INFO" => {
"REQUEST" => [ 0x11, 0x02 ],
"RESPONSE" => [ 0x11, 0x82 ]
},
"QUERY_DESCRIPTION" => {
"REQUEST" => [ 0x11, 0x00 ],
"RESPONSE" => [ 0x11, 0x80 ]
},
},
"WRITE" => { # CONTROL CODE 0x12
},
"EXECUTE" => { # CONTROL CODE 0x13
}
);
if ( $config->options_strings == 1 ) {
%DATA_BYTES = (
"TEMP" => 0,
"E_TODAY" => 1,
"VPV" => 2,
"IPV" => 3,
"IAC" => 4,
"VAC" => 5,
"FREQUENCY" => 6,
"PAC" => 7,
"IMPEDANCE" => 8,
"NA_1" => 9,
"E_TOTAL" => 10,
"NA_2" => 11,
"HOURS_UP" => 12,
"OP_MODE" => 13
);
}
elsif ( $config->options_strings == 2 ) {
%DATA_BYTES = (
"TEMP" => 0,
"E_TODAY" => 1,
"VPV" => 2,
"VPV2" => 3,
"IPV" => 4,
"IPV2" => 5,
"IAC" => 6,
"VAC" => 7,
"FREQUENCY" => 8,
"PAC" => 9,
"NA_0" => 10,
"NA_1" => 11, # NA_1 is actually upper bytes of total production
"E_TOTAL" => 12,
"NA_2" => 13,
"HOURS_UP" => 14,
"OP_MODE" => 15
);
}
else {
die "Incorrect config option for 'strings'\n";
}
use constant START_INVERTER_ADDRESS => 0x10; # start at 10 - giving us 244 available addresses
use constant OUR_ADDRESS => 0x01;
our $sock = 0;
our $last_min = -1;
our $pvlog_last_min = -1;
our $e_last_wh = -1;
our $next_inverter_address = START_INVERTER_ADDRESS;
our %inverters;
our $dbh = DBI->connect("dbi:SQLite:db.sqlite");
##
## sub routines
##
##
## Web server package
##
if ( $config->web_server_enabled ) {
package SolarWebServer;
use HTTP::Server::Simple::CGI;
use base qw(HTTP::Server::Simple::CGI);
use JSON;
use AppConfig;
my %dispatch = (
'/' => \&index,
'/inverter-data' => \&inverter_data,
'/log' => \&log,
# ...
);
sub handle_request {
my $self = shift;
my $cgi = shift;
my $path = $cgi->path_info();
my $handler = $dispatch{$path};
if ( ref($handler) eq "CODE" ) {
print "HTTP/1.0 200 OK\r\n";
$handler->($cgi);
}
else {
print "HTTP/1.0 404 Not found\r\n";
print $cgi->header, $cgi->start_html('Not found'), $cgi->h1('Not found'), $cgi->end_html;
}
}
sub index {
my $cgi = shift; # CGI.pm object
return if !ref $cgi;
open my $fh, "<www/index.html";
my $data = do { local $/; <$fh> };
print $cgi->header, $data;
}
sub inverter_data {
my $cgi = shift; # CGI.pm object
return if !ref $cgi;
print $cgi->header('application/json');
open FILE, "</tmp/eversolar";
while (<FILE>) {
print $_;
}
}
sub log {
my $cgi = shift; # CGI.pm object
return if !ref $cgi;
my $line_limit = 100;
my $page = $cgi->param('page');
print $cgi->header;
open FILE, "<" . $config->options_log_file;
@lines = reverse <FILE>;
my $count = 0;
foreach $line (@lines) {
if ( $count < ( ( $page * $line_limit ) + 1 ) ) {
$count++;
next;
}
print $line;
if ( $count == ( $line_limit + ( $page * $line_limit ) ) ) {
last;
}
else {
$count++;
}
}
}
}
##
## send packet to inverter
##
sub send_request {
# Don't send if not connected
if ( !$sock ) {
pmu_log("Severity 3, Socket not present for sending");
return 0
}
my $destination_address = shift;
my ( $ctrl_func_code, $data ) = @_;
%ctrl_func_code = %$ctrl_func_code;
@data = @$data;
my $data_length = scalar(@data);
@tmp_packet = ( 0xAA, 0x55, OUR_ADDRESS, 0x00, 0x00, $destination_address, $ctrl_func_code{"REQUEST"}[0], $ctrl_func_code{"REQUEST"}[1], $data_length );
if ($data_length) {
push( @tmp_packet, @data );
}
$tmp_packet_length = scalar(@tmp_packet);
# calculate checksum
my $checksum = 0;
for ( $i = 0 ; $i < $tmp_packet_length ; $i++ ) {
$checksum += $tmp_packet[$i];
}
$packet = pack( "C" . $tmp_packet_length . "n", ( @tmp_packet, $checksum ) );
if ( $config->options_debug >= 4 ) {
print "sending packet to inverter... \n";
print_bytes( $packet, length($packet) );
}
if ( $config->options_communication_method eq "eth2ser" ) {
eval {
$sock->send( $packet, scalar($packet) );
}
or do {
pmu_log("Severity 1, Failed to write to socket: $!");
$sock = 0;
return 0;
}
}
elsif ( $config->options_communication_method eq "serial" ) {
$sock->write($packet);
}
# allow time for inverter to respond
sleep 1;
if ( $ctrl_func_code{"RESPONSE"} ne "" ) {
if ( $config->options_communication_method eq "eth2ser" ) {
eval {
$sock->recv( $response, 256 );
1; # WHY????????
}
or do {
pmu_log("Severity 1, Failed to read from socket: $!.");
$sock = 0;
return 0;
}
}
elsif ( $config->options_communication_method eq "serial" ) {
( $count_in, $response ) = $sock->read(256);
}
if ( length($response) ) {
@recv_packet = unpack( "C*", $response );
if ( $config->options_debug >= 4 ) {
print "received packet from inverter: \n";
print_bytes( $response, length($response) );
}
if ( validate_checksum(@recv_packet) ) {
my $len = length($response) - 11;
my ( $ctrl_code, $func_code, @data ) = unpack( "xxxxxxCCxC" . $len . "xx", $response );
#use Data::Dumper;
#print Dumper(\@data);
if ( $ctrl_code == $ctrl_func_code{"RESPONSE"}[0]
&& $func_code == $ctrl_func_code{"RESPONSE"}[1] )
{
return pack( "C*", @data );
}
}
}
}
else {
return 1;
}
# if we fall through to here, something isn't right!
pmu_log("Severity 3, fallback to no response");
return 0;
}
##
## Dump a buffer in hex for debugging purposes
##
sub print_bytes {
my $buf = shift;
my $len = shift;
my $line_count = 0;
if ( $len <= 0 ) {
return;
}
my @bytes = unpack( "C$len", $buf );
if ( $len > 0 ) {
for ( my $i = 0 ; $i < $len ; $i++ ) {
printf "%02x ", $bytes[$i];
if ( $line_count++ > 15 ) {
$line_count = 0;
print "\n";
}
}
}
printf "\n";
}
##
## Connect to the ethernet-to-serial converter attached to the inverter
##
sub eth2ser_connect {
# make sure the sock is closed
shutdown( $sock, 2 );
my $sleep_time = 60;
my $sleep_time_cnt = 0;
# connect to ethernet to serial converter attached to inverter
# loop until it connects
do {
$sock = new IO::Socket::INET(
PeerAddr => $config->eth2ser_ip_address,
PeerPort => $config->eth2ser_port,
Proto => 'tcp',
);
if ($sock) {
pmu_log("Severity 1, Connected to the ethernet to serial converter");
}
else {
# Increase sleep time
$sleep_time_cnt = $sleep_time_cnt + 1;
if ( $sleep_time_cnt > 20) {
# Maximize to ceil(20/5) * 60 = 4 minutes
$sleep_time_cnt = 16;
}
$sleep_time = 60 * ceil($sleep_time_cnt / 5);
pmu_log("Severity 2, Unable to connect to the ethernet to serial converter ... sleeping $sleep_time seconds");
sleep $sleep_time;
}
} until ($sock);
my $timeo = pack( "l!l!", 1, 0 );
$sock->sockopt( SO_RCVTIMEO, $timeo );
$sock->sockopt( SO_SNDTIMEO, $timeo );
# sleep to allow inverter time to ready itself for connection
sleep 10;
}
##
## Connect directly to the inverter via serial
##
sub serial_connect {
if ( $^O eq 'MSWin32' ) { # Win32 (ActivePerl)
eval "use Win32::SerialPort";
$sock = Win32::SerialPort->new( $config->serial_port, 0, '' ) || die "Can\'t open $port: $!";
}
else { # Unix/Linux/other
eval "use Device::SerialPort";
$sock = Device::SerialPort->new( $config->serial_port, 0, '' ) || die "Can\'t open $port: $!";
}
$sock->baudrate(9600) || die 'fail setting baudrate, try -b option';
$sock->parity("none") || die 'fail setting parity';
$sock->databits(8) || die 'fail setting databits';
$sock->stopbits(1) || die 'fail setting stopbits';
$sock->handshake("none") || die 'fail setting handshake';
$sock->datatype("raw") || die 'fail setting datatype';
$sock->write_settings || die 'could not write settings';
$sock->read_char_time(0); # don't wait for each character
$sock->read_const_time(1000); # 1 second per unfulfilled "read" call
}
##
## send the re-register packet to inverters 8 times (happens after initial connect)
##
sub re_register_inverters {
# ask all inverters to drop their registration and respond to register requests - send packet 3 times as per protocol specs
for ( my $i = 0 ; $i < 8 ; $i++ ) {
unless ( send_request( 0x00, $CTRL_FUNC_CODES{"REGISTER"}{"RE_REGISTER"} ) ) {
pmu_log("Severity 2, Failed to send re-register message");
return 0;
}
}
return 1;
}
##
## send the register packet to any inverters out there, and register inverter that responds first
##
sub register_inverter {
# request serial numbers
$serial_num_response = send_request( 0x00, $CTRL_FUNC_CODES{"REGISTER"}{"OFFLINE_QUERY"} );
if ($serial_num_response) { ##bugfix september 2nd 2015 for serial numbers containing null: Z* instead of A*:
my $serial_number = unpack( "Z*", $serial_num_response );
pmu_log("Severity 3, Unpacked received serial number: $serial_number .");
$serial_number =~ s/\W//g;
pmu_log("Severity 1, Cleaned received serial number: $serial_number .");
# send register address (serial number followed by 1 byte address we allocate to inverter)
my @register_address = unpack( "C*", $serial_num_response );
push( @register_address, $next_inverter_address );
$address_response =
send_request( 0x00, $CTRL_FUNC_CODES{"REGISTER"}{"SEND_REGISTER_ADDRESS"}, \@register_address );
if ($address_response) {
# check register acknowledgement
my $len = length($address_response);
my $register_acknowledgement = unpack( "C", $address_response );
if ( $register_acknowledgement == 06 ) {
pmu_log("Severity 1, Inverter acknowledged registration");
# request inverter ID
$inverter_id_response =
send_request( $next_inverter_address, $CTRL_FUNC_CODES{"READ"}{"QUERY_INVERTER_ID"} );
if ($inverter_id_response) {
my $len = length($inverter_id_response);
my $inverter_id = unpack( "A*", $inverter_id_response );
pmu_log("Severity 1, Connected to inverter: $inverter_id");
# remember this inverter
$timestamp = get_timestamp();
$inverters{$next_inverter_address}{"id_string"} = $inverter_id;
$inverters{$next_inverter_address}{"serial"} = $serial_number;
$inverters{$next_inverter_address}{"connected"} = $timestamp;
$inverters{$next_inverter_address}{"max"} = {
"pac" => {
"watts" => 0,
"timestamp" => $timestamp
}
};
$inverters{$next_inverter_address}{"daily_retrieved"} = 0;
$inverters{$next_inverter_address}{"daily_retrieved_value"} = 0;
$inverters{$next_inverter_address}{"daily_stored"} = 0;
$next_inverter_address++;
}
else {
pmu_log("Severity 2, No response to 'query inverter id' request for inverter $serial_number");
}
}
else {
pmu_log("Severity 1, Inverter register acknowledgement incorrect for inverter $serial_number. Expected 06, received $register_acknowledgement");
}
}
else {
pmu_log("Severity 2, No response to 'send register address' request for inverter $serial_number");
}
}
else {
pmu_log("Severity 3, No response to 'offline query' request - no offline inverters");
}
}
##
## Try to register known inverter
##
sub register_known_inverter {
my $serial_number = shift;
pmu_log("Severity 2, Try to register known serial number: $serial_number");
# send register address (serial number followed by 1 byte address we allocate to inverter)
$serial_num_response = pack( "A*", $serial_number );
my @register_address = unpack( "C*", $serial_num_response );
push( @register_address, $next_inverter_address );
$address_response = send_request( 0x00, $CTRL_FUNC_CODES{"REGISTER"}{"SEND_REGISTER_ADDRESS"}, \@register_address );
if ($address_response) {
# check register acknowledgement
my $len = length($address_response);
my $register_acknowledgement = unpack( "C", $address_response );
if ( $register_acknowledgement == 06 ) {
pmu_log("Severity 1, Inverter $serial_number acknowledged registration");
# request inverter ID
$inverter_id_response =
send_request( $next_inverter_address, $CTRL_FUNC_CODES{"READ"}{"QUERY_INVERTER_ID"} );
if ($inverter_id_response) {
my $len = length($inverter_id_response);
my $inverter_id = unpack( "A*", $inverter_id_response );
pmu_log("Severity 1, Connected to inverter: $inverter_id");
# remember this inverter
$timestamp = get_timestamp();
$inverters{$next_inverter_address}{"id_string"} = $inverter_id;
$inverters{$next_inverter_address}{"serial"} = $serial_number;
$inverters{$next_inverter_address}{"connected"} = $timestamp;
$inverters{$next_inverter_address}{"max"} = {
"pac" => {
"watts" => 0,
"timestamp" => $timestamp
}
};
$inverters{$next_inverter_address}{"daily_retrieved"} = 0;
$inverters{$next_inverter_address}{"daily_retrieved_value"} = 0;
$inverters{$next_inverter_address}{"daily_stored"} = 0;
$next_inverter_address++;
}
else {
pmu_log("Severity 2, No response to 'query inverter id' request for known inverter $serial_number");
}
}
else {
pmu_log("Severity 1, Inverter register acknowledgement incorrect for known inverter $serial_number. Expected 06, received $register_acknowledgement");
}
}
else {
pmu_log("Severity 2, No response to 'send register address' request for known inverter $serial_number");
}
}
##
## Write a log file entry
##
sub pmu_log {
my $msg = shift;
( my $sec, my $min, my $hour, my $mday, my $mon, my $year, my $wday, my $yday, my $isdst ) = localtime(time);
my $timestamp = sprintf( "%04d-%02d-%02d %02d:%02d:%02d", $year + 1900, $mon + 1, $mday, $hour, $min, $sec );
# 9th letter is the severity print substr($msg,9,1);
if ( $config->options_debug >= substr( $msg, 9, 1 ) ) {
print sprintf( "%s: %s\n", $timestamp, $msg );
if ( $config->options_output_to_log != 0) {
open( OUT, ">>" . $config->options_log_file )
or die "Cannot open file " . $config->options_log_file . " for writing\n";
printf( OUT "%s: %s\n", $timestamp, $msg );
close OUT;
}
}
}
##
## Validate data packet - calculate and verify checksum
##
sub validate_checksum {
my @packet = @_;
my $csum = 0;
my $len = scalar(@packet);
for ( $i = 0 ; $i < $len - 2 ; $i++ ) {
$csum += $packet[$i];
}
# packets with all zeroes pass checksum test, but are invalid
return ( $csum > 0 ) && ( $csum == ( ( $packet[ $len - 2 ] << 8 ) + $packet[ $len - 1 ] ) );
}
##
## Parse data packet - put two bytes together
##
sub parse_packet {
my @packet = @_;
my @data;
my $j = 0;
my $len = scalar(@packet);
for ( $i = 0 ; $i < $len ; $i += 2 ) {
$data[ $j++ ] = ( $packet[$i] << 8 ) + $packet[ ( $i + 1 ) ];
}
return @data;
}
##
## Write out a JSON file for web server
##
sub write_web_json {
$json_text = encode_json \%inverters;
open( OUT, ">/tmp/eversolar" ) or die "Cannot open file /tmp/eversolar for writing\n";
printf( OUT "%s", $json_text );
close OUT;
}
##
## Upload data to PV-log.com
##
sub upload_pvlog {
# pv-log here
# We've accumulated data, send data to PV-log, this could be done in more detail, specs here
# http://photonensammler.homedns.org/wiki/doku.php?id=solarlog_datenformat#datendatei_min_dayjs
print "uploading to pv-log\n";
}
##
## Establish socket connection to inverter
##
sub inverter_connect {
my $connected = 0;
while ( !$connected ) {
if ( $config->options_communication_method eq "eth2ser" ) {
pmu_log("Severity 1, Connecting to the ethernet to serial converter");
eth2ser_connect();
}
elsif ( $config->options_communication_method eq "serial" ) {
pmu_log("Severity 1, Connecting to the serial port");
serial_connect();
}
$next_inverter_address = START_INVERTER_ADDRESS;
pmu_log("Severity 2, Asking all inverters to re-register");
$connected = re_register_inverters();
}
# reset some "last" vars
$last_min = -1;
$e_last_wh = -1;
}
##
## get current timestamp
##
sub get_timestamp {
( $sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst ) = localtime(time);
return sprintf( "%04d-%02d-%02d %02d:%02d:%02d", $year + 1900, $mon + 1, $mday, $hour, $min, $sec );
}
##
## START OF PROGRAM
##
##
## Setup sqlite database
##
$dbh->do(
"CREATE TABLE IF NOT EXISTS inverter (
serial_number VARCHAR(128),
timestamp VARCHAR(64),
pac INT,
e_today FLOAT,
e_total FLOAT,
vpv FLOAT,
vpv2 FLOAT,
ipv FLOAT,
ipv2 FLOAT,
vac FLOAT,
iac FLOAT,
frequency FLOAT,
impedance FLOAT,
hours_up FLOAT,
op_mode INT,
temp FLOAT
)"
);
###############################################################################
##
##
##
## Database housekeeping
##
##
##
##
##
###############################################################################
# vpv2 and ipv2 were added in later versions - fix any existing databases that don't have the columns
print "Update old database version, or print 2 fail messages (part 1) : \n";
$dbh->do("ALTER TABLE inverter ADD COLUMN vpv2 FLOAT") or 1;
$dbh->do("ALTER TABLE inverter ADD COLUMN ipv2 FLOAT") or 1;
print "Done updating old database version. \n";
# since version 0.16 we add a second table with daily production levels including a rolling 365 day production volume
# First we create the table, and then we populate it with historical data. This may take a little while first time around
#
pmu_log("Severity 3, Checking database");
my $stmt = " SELECT COUNT(*) FROM sqlite_master WHERE type='table' AND name='daily'";
my $sth = $dbh->prepare($stmt);
my $rv = $sth->execute() or die $DBI::errstr;
my $count = $sth->fetchrow_array();
if ( $count < 1 ) {
print $DBI::errstr;
# ok, old tadabase without the daily table.
# create table and fill in data
pmu_log("Severity 1, Updating database with daily table, making data export and stats easy");
my $stmt = "create table daily (
serial_number varchar(128) not null,
timestamp varchar(64) not null,
e_today float,
e_total float,
pmax_today float,
pmax_time varchar(64),
unique (serial_number, timestamp)
)";
my $sth = $dbh->prepare($stmt);
my $rv = $sth->execute() or die $DBI::errstr;
my $stmt = " insert into daily (serial_number, timestamp, e_today,e_total)
select serial_number, date(timestamp),e_today, max(e_total) from inverter group by serial_number,date(timestamp) ";
my $sth = $dbh->prepare($stmt);
my $rv = $sth->execute() or die $DBI::errstr;
}
else {
# pmax was added in later versions - fix any existing databases that don't have the columns
print "Update old daily database version, or print 2 fail messages (part 2) : \n";
$dbh->do("ALTER TABLE daily ADD COLUMN pmax_today FLOAT") or 1;
$dbh->do("ALTER TABLE daily ADD COLUMN pmax_time varchar(64)") or 1;
print "Done updating old daily database version. \n";
}
###############################################################################
##
##
##
## Web server
##
##
##
##
##
###############################################################################
if ( $config->web_server_enabled ) {
# require "web-server.pl";
# start the web server on port $config->web_server_port
our $web_server_pid = SolarWebServer->new( $config->web_server_port )->background();
$SIG{INT} = sub {
syswrite( STDERR, "\nCaught INT signal...\n" );
syswrite( STDERR, "Shutting down web server (pid $web_server_pid)...\n" );
my $cmd = `kill -9 $web_server_pid`;
syswrite( STDERR, "Exiting.\n" );
exit;
};
# tmp file for web server
$json_text = encode_json \%inverters;
open( OUT, ">/tmp/eversolar" ) or die "Cannot open file /tmp/eversolar for truncating\n";
printf( OUT "%s", $json_text );
close OUT;
}
###############################################################################
##
##
##
## Main Loop
##
##
##
##
##
###############################################################################
while (42) {
$timestamp = get_timestamp();
# connect to inverter if not connected (!$sock)
my $combined_power = 0;
my $combined_daykwh = 0;
my $d365 = 0;
if ( !$sock ) {
inverter_connect();
sleep 10;
my $sth = $dbh->prepare("select distinct serial_number from daily limit 10");
$sth->execute();
my $row;
while ( $row = $sth->fetchrow_arrayref() ) {
pmu_log("Severity 2, got serial @$row[0] from database");
register_known_inverter( @$row[0] );
sleep 10;
}
pmu_log("Severity 1, done registering known inverters");
$sth->finish();
}