From 9d87c925a9eaa4fc256be3173c14a20d1469472d Mon Sep 17 00:00:00 2001
From: fishsoupisgood <github@madingley.org>
Date: Wed, 9 Sep 2020 11:53:37 +0100
Subject: everything, mostly, working

---
 radiator-plc/mt300n-v2/.gitignore          |  1 +
 radiator-plc/mt300n-v2/Makefile            |  6 +++
 radiator-plc/mt300n-v2/usr/bin/mqtt_if.pl  | 76 ++++++++++++++++++++++++++++++
 radiator-plc/mt300n-v2/usr/bin/run_mqtt_if |  6 +++
 4 files changed, 89 insertions(+)
 create mode 100644 radiator-plc/mt300n-v2/.gitignore
 create mode 100644 radiator-plc/mt300n-v2/Makefile
 create mode 100755 radiator-plc/mt300n-v2/usr/bin/mqtt_if.pl
 create mode 100755 radiator-plc/mt300n-v2/usr/bin/run_mqtt_if

(limited to 'radiator-plc/mt300n-v2')

diff --git a/radiator-plc/mt300n-v2/.gitignore b/radiator-plc/mt300n-v2/.gitignore
new file mode 100644
index 0000000..859afb1
--- /dev/null
+++ b/radiator-plc/mt300n-v2/.gitignore
@@ -0,0 +1 @@
+stamp
diff --git a/radiator-plc/mt300n-v2/Makefile b/radiator-plc/mt300n-v2/Makefile
new file mode 100644
index 0000000..cdf9d24
--- /dev/null
+++ b/radiator-plc/mt300n-v2/Makefile
@@ -0,0 +1,6 @@
+STUFF=$(shell find usr \! -type d -print)
+
+stamp:  ${STUFF}
+	tar cf - ${STUFF} | ssh radiator-plc0 "cd / && tar xvpf -"
+	#tar cf - ${STUFF} | ssh radiator-plc1 "cd / && tar xvpf -"
+	touch $@
diff --git a/radiator-plc/mt300n-v2/usr/bin/mqtt_if.pl b/radiator-plc/mt300n-v2/usr/bin/mqtt_if.pl
new file mode 100755
index 0000000..f81b6e0
--- /dev/null
+++ b/radiator-plc/mt300n-v2/usr/bin/mqtt_if.pl
@@ -0,0 +1,76 @@
+#!/usr/bin/env perl
+
+use strict;
+
+use Device::SerialPort;
+use Net::MQTT::Simple;
+
+sub chomp_harder($) {
+    my $ret = shift;
+    my $irs = $/;
+    $/ = "\n";
+    chomp $ret;
+    $/ = "\r";
+    chomp $ret;
+    $/ = $irs;
+    return $ret;
+}
+
+sub get_line($$) {
+    my ( $port, $mqtt ) = @_;
+
+    my $ret = "";
+
+    while (1) {
+        my ( $count, $byte ) = $port->read(1);
+        $mqtt->tick();
+
+        if ( $count > 0 ) {
+            $ret .= $byte;
+            return chomp_harder($ret) if $byte eq "\n";
+        }
+        else {
+            $ret = chomp_harder($ret);
+            return $ret;
+        }
+    }
+}
+
+my $plc_port = "/dev/ttyS1";
+my $plc = new Device::SerialPort($plc_port) || die "can't open $plc_port\n";
+
+$plc->baudrate(38400);
+$plc->parity("none");
+$plc->databits(8);
+$plc->stopbits(1);
+$plc->stty_icanon(0);
+
+$plc->read_char_time(0);
+$plc->read_const_time(1000);
+
+my $mqtt = Net::MQTT::Simple->new("10.32.139.1");
+
+sub mqtt_msg($$) {
+    my ( $topic, $message ) = @_;
+
+    $plc->write("MQTT $topic $message\r\n");
+}
+
+$mqtt->subscribe( 'cmnd/+/var1', \&mqtt_msg );
+$mqtt->subscribe( 'cmnd/+/var2', \&mqtt_msg );
+$mqtt->subscribe( 'cmnd/+/var3', \&mqtt_msg );
+
+while (1) {
+    my $line = get_line( $plc, $mqtt );
+    next unless length($line) > 0;
+
+    if ( $line =~ /MQTT\s+([^\s]+)\s+(.+)/ ) {
+        $mqtt->publish( $1, $2 );
+    }
+
+    if ( $line =~ /MQTTR\s+([^\s]+)\s+(.+)/ ) {
+        $mqtt->retain( $1, $2 );
+    }
+
+}
+
diff --git a/radiator-plc/mt300n-v2/usr/bin/run_mqtt_if b/radiator-plc/mt300n-v2/usr/bin/run_mqtt_if
new file mode 100755
index 0000000..2c06f6b
--- /dev/null
+++ b/radiator-plc/mt300n-v2/usr/bin/run_mqtt_if
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+while true; do
+  /usr/local/bin/mqtt_if.pl
+  sleep 1
+done
-- 
cgit v1.2.3