/// <summary>
/// Instantiates a Max7219/7221 LED driver, using the netduino's hard SPI interface by default:
/// If multiple Max7219/7221 chips are chained together, the CS pin must be controlled by the caller instead of the netduino handling it.
/// CLK = pin 13
/// MOSI = pin 11
/// CS = pin 10
/// </summary>
/// <param name="chipSelect">Chip Select pin.</param>
/// <param name="spiModule">SPI module, SPI 1 is used by default.</param>
/// <param name="speedKHz">Speed of the SPI bus in kHz. Set @ 10MHz by default (max chip speed).</param>
public Max72197221(Cpu.Pin chipSelect, SPI.SPI_module spiModule = SPI.SPI_module.SPI1, uint speedKHz = (uint)10000)
{
var extendedSpiConfig = new ExtendedSpiConfiguration(
SPI_mod: spiModule,
ChipSelect_Port: chipSelect,
ChipSelect_ActiveState: false,
ChipSelect_SetupTime: 0,
ChipSelect_HoldTime: 0,
Clock_IdleState: false,
Clock_Edge: true,
Clock_RateKHz: speedKHz,
BitsPerTransfer: 16);
Spi = new SPI(extendedSpiConfig);
DigitScanLimitSafety = true;
SpiBuffer = new ushort[1];
}
public AdaFruitST7735(
Cpu.Pin chipSelect,
Cpu.Pin dc,
Cpu.Pin reset,
SPI.SPI_module spiModule = SPI.SPI_module.SPI1,
uint speedKHz = (uint)9500,
VirtualMemory vm = null)
{
Width = 128;
Height = 160;
AutoRefreshScreen = false;
DataCommand = new OutputPort(dc, false);
Reset = new OutputPort(reset, true);
var extendedSpiConfig = new ExtendedSpiConfiguration(
SPI_mod: spiModule,
ChipSelect_Port: chipSelect,
ChipSelect_ActiveState: false,
ChipSelect_SetupTime: 0,
ChipSelect_HoldTime: 0,
Clock_IdleState: false,
Clock_Edge: true,
Clock_RateKHz: speedKHz,
BitsPerTransfer: 8);
Spi = new SPI(extendedSpiConfig);
if (vm == null) {
SpiBuffer = new byte[Width * Height * sizeof(ushort)];
MemoryWriteFunction = SpiBufferWrite;
} else {
VM = vm;
MemoryWriteFunction = VirtualMemoryWrite;
}
Initialize();
}
public AdaFruitST7735(Cpu.Pin chipSelect, Cpu.Pin dc, Cpu.Pin reset, SPI.SPI_module spiModule = SPI.SPI_module.SPI1, uint speedKHz = (uint)9500) {
AutoRefreshScreen = false;
DataCommand = new OutputPort(dc, false);
Reset = new OutputPort(reset, true);
var extendedSpiConfig = new ExtendedSpiConfiguration(
SPI_mod: spiModule,
ChipSelect_Port: chipSelect,
ChipSelect_ActiveState: false,
ChipSelect_SetupTime: 0,
ChipSelect_HoldTime: 0,
Clock_IdleState: false,
Clock_Edge: true,
Clock_RateKHz: speedKHz,
BitsPerTransfer: 8);
Spi = new SPI(extendedSpiConfig);
Initialize();
}
