From 85929231fae3ae797f3a34f6b5d928d2341fc1e1 Mon Sep 17 00:00:00 2001
From: Thomas Schmucker <ts@its1.de>
Date: Sat, 25 Jul 2026 15:22:10 +0200
Subject: erster import

---
 src/app.cpp | 101 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 src/app.cpp

(limited to 'src')

diff --git a/src/app.cpp b/src/app.cpp
new file mode 100644
index 0000000..c6ec00a
--- /dev/null
+++ b/src/app.cpp
@@ -0,0 +1,101 @@
+// Standard C++
+#include <array>
+#include <iomanip>
+#include <iostream>
+#include <string>
+#include <thread>
+
+// Asio
+#include <asio.hpp>
+
+using namespace std;
+
+int
+main()
+{
+	asio::io_context context;
+
+	try {
+		const auto baudrate = 57600;
+		const auto databits = 8;
+
+		asio::serial_port port(context);
+
+		auto send = [&](string_view cmd) {
+			asio::write(port, asio::buffer(cmd));
+		};
+
+		port.open("/dev/cuaU0");
+		if ( !port.is_open() ) {
+			cerr << "Kann Port nicht öffnen...\n";
+			return EXIT_FAILURE;
+		}
+
+		port.set_option(asio::serial_port::baud_rate(baudrate));
+		port.set_option(asio::serial_port::parity(asio::serial_port::parity::none));
+		port.set_option(asio::serial_port::character_size(databits));
+		port.set_option(asio::serial_port::stop_bits(asio::serial_port::stop_bits::one));
+		port.set_option(asio::serial_port::flow_control(asio::serial_port::flow_control::none));
+
+		send("<GETSERIAL>>");
+
+		jthread thread([&context, &port]() {
+			array<char, 1000> buffer{};
+
+			function<void()> readFromPort = [&]() {
+				port.async_read_some(asio::buffer(buffer, buffer.size()), [&](std::error_code error, size_t length) {
+					if ( !error ) {
+						cout << "Daten: " << length << ": ";
+						for ( size_t i = 0; i != length; ++i ) {
+							auto chr = static_cast<unsigned char>(buffer.at(i));
+
+							if ( isprint(chr) ) {
+								cout << static_cast<char>(chr);
+							}
+							else {
+								cout << '<' << hex << setw(2) << setfill('0') << static_cast<unsigned>(chr) << dec << '>';
+							}
+						}
+						cout << '\n';
+
+						readFromPort();
+					}
+					else {
+						if ( error != asio::error::operation_not_supported ) {
+							cerr << "Fehler: " << error.message() << '\n';
+						}
+					}
+				});
+			};
+
+			readFromPort();
+			context.run();
+		});
+
+		for ( string line; getline(cin, line); ) {
+			if ( line == "ser?" ) {
+				send("<GETSERIAL>>");
+			}
+			if ( line == "ver?" ) {
+				send("<GETVER>>");
+			}
+			if ( line == "date?" ) {
+				send("<GETDATETIME>>");
+			}
+			if ( line == "hb!" ) {
+				send("<HEARTBEAT1>>");
+			}
+
+			if ( line == "quit" ) {
+				break;
+			}
+		}
+
+		port.cancel();
+		context.stop();
+		port.close();
+	}
+	catch ( asio::system_error& e ) {
+		cerr << e.what() << '\n';
+	}
+}
-- 
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