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/*
* Pins_DuetNG.cpp
*
* Created on: 31 Mar 2019
* Author: David
*/
#include "RepRapFirmware.h"
// Hardware-dependent pins functions
// Return a pointer to the pin description entry. Declared in and called from CoreN2G.
const PinDescriptionBase *AppGetPinDescription(Pin p) noexcept
{
return (p < ARRAY_SIZE(PinTable)) ? &PinTable[p] : nullptr;
}
// Function to look up a pin name and pass back the corresponding index into the pin table
// On this platform, the mapping from pin names to pins is fixed, so this is a simple lookup
bool LookupPinName(const char *pn, LogicalPin &lpin, bool &hardwareInverted) noexcept
{
if (StringEqualsIgnoreCase(pn, NoPinName))
{
lpin = NoLogicalPin;
hardwareInverted = false;
return true;
}
for (size_t lp = 0; lp < ARRAY_SIZE(PinTable); ++lp)
{
const char *q = PinTable[lp].pinNames;
if (q == nullptr)
{
continue;
}
while (*q != 0)
{
// Try the next alias in the list of names for this pin
const char *p = pn;
bool hwInverted = (*q == '!');
if (hwInverted)
{
++q;
}
while (*q != ',' && *q != 0 && *p == *q)
{
++p;
++q;
}
if (*p == 0 && (*q == 0 || *q == ','))
{
// Found a match
lpin = (LogicalPin)lp;
hardwareInverted = hwInverted;
return true;
}
// Skip to the start of the next alias
while (*q != 0 && *q != ',')
{
++q;
}
if (*q == ',')
{
++q;
}
}
}
return false;
}
// End
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