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USB-SPI_Notes.txt
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USB-SPI_Notes.txt
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Click on Flipchip_Tester_Form.cs:Read10kMPC23S17Registersbutton
Call Flipchip_Tester_Form.cs:Read100kMPC23S17Registersbutton_Click()
Call FlipChipTester.cs:WarrensFlipChipTester.Read100MPC23S17Registers()
SpiConfig0 = new FtdiChannelConfig
Gpio0 = new MCP23S17(SpiConfig0)
SpiDevice.cs:SpiDevice(FtdiChannelConfig config, SpiConfiguration spiConfig)
config = SpiConfig0, spiConfig = null
_cfg = config, _spiConfig = channel 0
call SpiDevice.cs:InitLibAndHandle()
call SpiDevice.cs:LibMpsseSpi.SPI_OpenChannel(_spiConfig.ChannelIndex, out _handle)
This function opens the indexed channel and provides a handle to it.
Valid values for the index of channel can be from 0 to the value obtained using SPI_GetNumChannels - 1).
Returns: Pointer to the handle of type FT_HANDLE
call SpiDevice.cs:LibMpsseSpi.SPI_InitChannel(_handle, ref _cfg)
This function initializes the channel and the communication parameters associated with it.
call FlipChipTester.cs:Gpio0.WriteReadFiveRegisters(0x01, (int)MCP23S17.Register.OLAT, SpiRegisterContents)
call MicrochipMCP23S17.cs:Write(ControlWordAndRegister, out sizeTransfered, FtSpiTransferOptions.ChipselectEnable)
call SpiDevice.cs:Write(byte[] buffer, out int sizeTransfered, FtSpiTransferOptions options)
call SpiDevice.cs:Write(byte[] buffer, int sizeToTransfer, out int sizeTransfered, FtSpiTransferOptions options)
call SpiDevice.cs:LibMpsseSpi.SPI_Write(_handle, buffer, sizeToTransfer, out sizeTransfered, options)