internal Gpio(PinMapping mapping, int rows)
{
AMask = 1U << mapping.A;
BMask = 1U << mapping.B;
CMask = 1U << mapping.C;
ABCDEMask = AMask | BMask | CMask;
if (rows > 16)
{
DMask = 1U << mapping.D;
ABCDEMask |= DMask;
}
if (rows > 32)
{
EMask = 1U << mapping.E;
ABCDEMask |= EMask;
}
OEMask = 1U << mapping.OE;
ClockMask = 1U << mapping.Clock;
LatchMask = 1U << mapping.Latch;
R1Mask = 1U << mapping.R1;
G1Mask = 1U << mapping.G1;
B1Mask = 1U << mapping.B1;
R2Mask = 1U << mapping.R2;
G2Mask = 1U << mapping.G2;
B2Mask = 1U << mapping.B2;
AllColorsMask = R1Mask | G1Mask | B1Mask | R2Mask | G2Mask | B2Mask;
}
private int _chainColumns; // how many matrices in one row of the chaining.
/// <summary>
/// Construct a new RGBLedMatrix object
/// </summary>
/// <param name="mapping">The Gpio pin mapping</param>
/// <param name="width">The width in pixels of the matrix display area</param>
/// <param name="height">The height in pixels of the matrix display area</param>
/// <param name="chainRows">Number of the matrices rows in the chain</param>
/// <param name="chainColumns">Number of the matrices columns in the chain</param>
public RGBLedMatrix(PinMapping mapping, int width, int height, int chainRows = 1, int chainColumns = 1)
{
_chainRows = chainRows;
_chainColumns = chainColumns;
_mapping = mapping;
if (width < 8 || height < 8 || height % chainRows != 0)
{
throw new ArgumentException("Invalid rows or width values");
}
_deviceRows = height / chainRows;
_gpio = new Gpio(mapping, _deviceRows);
_controller = new GpioController(PinNumberingScheme.Logical, _gpio);
OpenAndWriteToPin(_mapping.A, PinValue.Low);
OpenAndWriteToPin(_mapping.B, PinValue.Low);
OpenAndWriteToPin(_mapping.C, PinValue.Low);
if (_deviceRows > 16)
{
OpenAndWriteToPin(_mapping.D, PinValue.Low);
}
if (_deviceRows > 32)
{
_duration = (long)((double)Stopwatch.Frequency * 400 / 1E9);
OpenAndWriteToPin(_mapping.E, PinValue.Low);
}
_fullChainWidth = width * chainRows;
if (_fullChainWidth > 32)
{
_duration = (long)((double)Stopwatch.Frequency * 400 / 1E9);
}
// OE set High means disable output (confusing)
OpenAndWriteToPin(_mapping.OE, PinValue.High);
OpenAndWriteToPin(_mapping.Clock, PinValue.Low);
OpenAndWriteToPin(_mapping.Latch, PinValue.Low);
OpenAndWriteToPin(_mapping.R1, PinValue.Low);
OpenAndWriteToPin(_mapping.G1, PinValue.Low);
OpenAndWriteToPin(_mapping.B1, PinValue.Low);
OpenAndWriteToPin(_mapping.R2, PinValue.Low);
OpenAndWriteToPin(_mapping.G2, PinValue.Low);
OpenAndWriteToPin(_mapping.B2, PinValue.Low);
_rowSetMasks = new ulong[_deviceRows >> 1];
for (int i = 1; i < _deviceRows >> 1; i++)
{
if ((i & 1) != 0)
{
_rowSetMasks[i] |= _gpio.AMask;
}
if ((i & 2) != 0)
{
_rowSetMasks[i] |= _gpio.BMask;
}
if ((i & 4) != 0)
{
_rowSetMasks[i] |= _gpio.CMask;
}
if ((i & 8) != 0)
{
_rowSetMasks[i] |= _gpio.DMask;
}
if ((i & 0x10) != 0)
{
_rowSetMasks[i] |= _gpio.EMask;
}
}
_colorsMake = new ulong[16]; // 8 for RGB1 and 8 for RGB2
for (int i = 1; i < 8; i++)
{
if ((i & 1) != 0)
{
_colorsMake[i] |= _gpio.R1Mask;
_colorsMake[i + 8] |= _gpio.R2Mask;
}
if ((i & 2) != 0)
{
_colorsMake[i] |= _gpio.G1Mask;
_colorsMake[i + 8] |= _gpio.G2Mask;
}
if ((i & 4) != 0)
{
_colorsMake[i] |= _gpio.B1Mask;
_colorsMake[i + 8] |= _gpio.B2Mask;
}
}
_colorsBuffer = new byte[8 * _fullChainWidth * (_deviceRows >> 1)];
_colorsBackBuffer = new byte[8 * _fullChainWidth * (_deviceRows >> 1)];
_width = width;
_rows = height;
_safeToDispose = true;
_swapRequested = false;
_startMeasureFrameTime = true;
}