// Get the Reverse Chord Finer mode ready to run.
void ReverseChordFinderMode::Startup()
{
// Cache a pointer to the display instance.
Display *pDisplay = Display::Instance();
// Setup for the first state and initialize our instance daata.
m_CurrentState = GETTING_STRING_MATCH_PATTERN_STATE;
m_CurrentString = 0;
m_CurrentFret = 0;
m_CurrentValue = 0;
m_MatchPattern = (1 << LedDriver::NUM_STRINGS) - 1;
memset(&m_Chord, 0, sizeof(Chord));
// Reset our chord data to the first chord.
m_ChordData.GetChord(0, 0, 0);
// Clear all LEDs.
pDisplay->SetAllLeds(false);
// Display the initial match pattern on the fingerboard.
uint8_t *pPattern = m_Chord.GetPatternPtr();
pPattern[0] = m_MatchPattern;
pDisplay->DisplayLeds(&m_Chord);
pDisplay->DispLcdProgmem(F("Strings to Match"), true, 0, 0);
}
// Display the current base fret value.
void ReverseChordFinderMode::UpdateBaseFretDisplay()
{
// Cache a pointer to the display instance,
Display *pDisplay = Display::Instance();
// A base fret of 0 indicates that any fret will match.
if (m_Chord.GetFret() == 0)
{
pDisplay->DispLcdProgmem(F("ANY"), false, 0, 11);
}
else
{
// Base fret is not 0, display the current value.
pDisplay->DispLcdProgmem(F(" "), false, 0, 11);
pDisplay->DispLcdInt(m_Chord.GetFret(), false, 0, 11);
}
}
// Get the string match pattern
uint32_t ReverseChordFinderMode::HandleGettingStringsMatchPatternState(uint32_t irKey)
{
// Cache some useful data.
Display *pDisplay = Display::Instance();
uint8_t *pPattern = m_Chord.GetPatternPtr();
// Assume that we're going to use the specified IR key.
uint32_t returnKey = 0;
switch (irKey)
{
case PATTERN_RIGHT: // Remove upper strings
if (m_MatchPattern > 1)
{
m_MatchPattern >>= 1;
}
pPattern[0] = m_MatchPattern;
// Display the match pattern on the fingerboard.
pDisplay->DisplayLeds(&m_Chord);
break;
case PATTERN_LEFT: // Add upper strings.
if (m_MatchPattern < ((1 << LedDriver::NUM_STRINGS) - 1))
{
m_MatchPattern = (m_MatchPattern <<= 1) + 1;
}
pPattern[0] = m_MatchPattern;
// Display the match pattern on the fingerboard.
pDisplay->DisplayLeds(&m_Chord);
break;
case SELECT: // Select the current pattern. Advance to the next state.
m_CurrentState = GETTING_FRET_STATE;
// Reset the match pattern on the fingerboard.
pPattern[0] = 0;
pDisplay->DisplayLeds(&m_Chord);
// Display our headline.
m_Chord.SetFret(0);
pDisplay->DispLcdProgmem(F("Base Fret: ANY"), true, 0, 0);
break;
default:
// We didn't handle the passed in key, so return it unmodified.
returnKey = irKey;
break;
}