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/*
* GpInPort.cpp
*
* Created on: 11 Feb 2020
* Author: David
*/
#include "GpInPort.h"
#include <GCodes/GCodeBuffer/GCodeBuffer.h>
#include <Platform/RepRap.h>
#include <Platform/Platform.h>
#if SUPPORT_CAN_EXPANSION
# include <CAN/CanInterface.h>
# include <CAN/CanMessageGenericConstructor.h>
#endif
#if SUPPORT_OBJECT_MODEL
// Object model table and functions
// Note: if using GCC version 7.3.1 20180622 and lambda functions are used in this table, you must compile this file with option -std=gnu++17.
// Otherwise the table will be allocated in RAM instead of flash, which wastes too much RAM.
// Macro to build a standard lambda function that includes the necessary type conversions
#define OBJECT_MODEL_FUNC(...) OBJECT_MODEL_FUNC_BODY(GpInputPort, __VA_ARGS__)
#define OBJECT_MODEL_FUNC_IF(_condition,...) OBJECT_MODEL_FUNC_IF_BODY(GpInputPort, _condition,__VA_ARGS__)
constexpr ObjectModelTableEntry GpInputPort::objectModelTable[] =
{
// Within each group, these entries must be in alphabetical order
// Return 'value' as an integer, not a boolean, because we may allow analog inputs in future
{ "value", OBJECT_MODEL_FUNC((int32_t)((self->GetState()) ? 1 : 0)), ObjectModelEntryFlags::live },
};
constexpr uint8_t GpInputPort::objectModelTableDescriptor[] = { 1, 1 };
DEFINE_GET_OBJECT_MODEL_TABLE(GpInputPort)
#endif
bool GpInputPort::GetState() const noexcept
{
// Temporary implementation until we use interrupts to track input pin state changes
#if SUPPORT_CAN_EXPANSION
if (boardAddress != CanInterface::GetCanAddress())
{
return currentState;
}
#endif
return port.ReadDigital();
}
// Return true if the port is not configured
bool GpInputPort::IsUnused() const noexcept
{
return
#if SUPPORT_CAN_EXPANSION
boardAddress == CanInterface::GetCanAddress() &&
#endif
!port.IsValid();
}
GCodeResult GpInputPort::Configure(uint32_t gpinNumber, GCodeBuffer &gb, const StringRef &reply)
{
if (gb.Seen('C'))
{
String<StringLength50> pinName;
gb.GetReducedString(pinName.GetRef());
// Remove any existing assignment
#if SUPPORT_CAN_EXPANSION
if (boardAddress != CanInterface::GetCanAddress())
{
const GCodeResult rslt = CanInterface::DeleteHandle(boardAddress, handle, reply);
if (rslt != GCodeResult::ok)
{
reply.cat('\n');
const MessageType mtype = (rslt == GCodeResult::warning) ? AddWarning(gb.GetResponseMessageType()) : AddError(gb.GetResponseMessageType());
reprap.GetPlatform().Message(mtype, reply.c_str());
reply.Clear();
}
boardAddress = CanInterface::GetCanAddress();
}
#endif
port.Release();
currentState = false;
GCodeResult rslt;
#if SUPPORT_CAN_EXPANSION
const CanAddress newBoard = IoPort::RemoveBoardAddress(pinName.GetRef());
if (newBoard != CanInterface::GetCanAddress())
{
handle.Set(RemoteInputHandle::typeGpIn, gpinNumber, 0);
rslt = CanInterface::CreateHandle(newBoard, handle, pinName.c_str(), 0, MinimumGpinReportInterval, currentState, reply);
if (rslt == GCodeResult::ok)
{
boardAddress = newBoard;
}
else
{
currentState = false;
}
}
else
#endif
{
if (port.AssignPort(pinName.c_str(), reply, PinUsedBy::gpin, PinAccess::read))
{
currentState = port.ReadDigital();
rslt = GCodeResult::ok;
}
else
{
rslt = GCodeResult::error;
}
}
reprap.InputsUpdated();
return rslt;
}
else
{
// Report the pin details
#if SUPPORT_CAN_EXPANSION
if (boardAddress != CanInterface::GetCanAddress())
{
const GCodeResult rslt = CanInterface::GetHandlePinName(boardAddress, handle, currentState, reply);
if (rslt != GCodeResult::ok)
{
return rslt;
}
reply.Prepend("Pin ");
}
else
#endif
{
reply.copy("Pin ");
port.AppendPinName(reply);
}
reply.catf(", active: %s", (GetState()) ? "true" : "false");
}
return GCodeResult::ok;
}
// End
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