Add C++ Bus class for the physical layer interface

src/avclan/bus.cc

@@ -0,0 +1,32 @@
+// copyright (C) 2006 Marcin Slonicki <marcin@softservice.com.pl>
+// copyright (C) 2007 Louis Frigon
+// Copyright (C) 2015 Allen Hill <allenofthehills@gmail.com>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "bus.hpp"
+#include "avclan_defs.h"
+#include "avclan_phy.h" // bridge until phy has been ported
+
+namespace avclan {
+void Bus::init() { AVCLAN_busInit(); };
+void Bus::mute(bool mute) { AVCLAN_muteDevice(mute); };
+bool Bus::is_muted() const { return AVCLAN_ismuted(); };
+Bus::Handle Bus::get() { return {}; };
+
+bool Bus::Handle::sendstartbit() { return AVCLAN_sendstartbit(); };
+Bus::Error::Read Bus::Handle::readstartbit() {
+  using enum Error::Read;
+  auto err = AVCLAN_readstartbit();
+  if (err == rSTARTBIT_TOO_LONG)
+    return STARTBIT_TOO_LONG;
+  else if (err == rLATCHED_COMPARATOR)
+    return BAD_STARTBIT;
+  else if (err == rSTARTBIT_TOO_SHORT)
+    return STARTBIT_TOO_SHORT;
+  else
+    return Read{0};
+};
+void Bus::Handle::send_ACK() { AVCLAN_sendbit_ACK(); };
+uint8_t Bus::Handle::read_ACK() { return AVCLAN_readbit_ACK(); };
+
+} // namespace avclan