cant read data from epever to raspberry - php

Question

I'm using Raspberry-pi to read data from epever by rs485 to usb.I'm using this PHP file to read data.
<?php
/*
* PHP EpSolar Tracer Class (PhpEpsolarTracer) v0.9
*
*/
//EPEver tracer php library
require_once 'PhpEpsolarTracer.php';
//influxDB php client library
require 'vendor/autoload.php';
//Define IP of influxDB
$host = 'localhost';
$tracer = new PhpEpsolarTracer('/dev/ttyUSBACM0');
$client = new InfluxDB\Client($host,8086,"root","root");
$db = $client->selectDB("logger");
//'http://localhost:8086/write?db=mydb' --data-binary 'cpu_load_short,host=server01,region=us-west value=0.64 1434055562000000000'
Print "\n Realtime Data\n";
if ($tracer->getRealtimeData()) {
for ($i = 0; $i < count($tracer->realtimeData); $i++) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://localhost:8086/write?db=powerwall" );
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
$Item = $tracer->realtimeData[$i];
$Key_Name = str_replace(" ","-",$tracer->realtimeKey[$i]);
Print str_pad($i, 2, '0', STR_PAD_LEFT) . " " . $Key_Name . " " . $Item . "\n";
curl_setopt($ch, CURLOPT_POSTFIELDS, "$Key_Name,unit=Realtime value=$Item" );
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: text/plain'));
$result = curl_exec ($ch);
}
} else
print "Cannot get RealTime Data\n";
Print "\n Statistical Data\n";
if ($tracer->getStatData()) {
for ($i = 0; $i < count($tracer->statData); $i++) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://localhost:8086/write?db=powerwall" );
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
$Item = $tracer->statData[$i];
$Key_Name = str_replace(" ","-",$tracer->statKey[$i]);
$Key_Name = 'Stat-' . $Key_Name;
Print str_pad($i, 2, '0', STR_PAD_LEFT) . " " . $Key_Name . " " . $Item . "\n";
curl_setopt($ch, CURLOPT_POSTFIELDS, "$Key_Name,unit=statData value=$Item" );
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: text/plain'));
$result = curl_exec ($ch);
}
} else
print "Cannot get Statistical Data\n";
?>
When I run this code I got the error message:
Cannot get Real Time Data
So then I followed the issue in here:
Modbus cant read data from epever tracer 1210a to raspberry
But I haven't do this, I got several errors.
Then I have checked the kernel version of my raspberry pi and it shows as
Linux raspberry pi 4.19.57-v7+ #1244 SMP Thu Jul 4 18:45:25 BST 2019 armv7l GNU/Linux