Example #1
0
        private void InitializeGpio(Ft4222Device device)
        {
            DeviceInformation = device;
            // Open device
            var ftStatus = FtFunction.FT_OpenEx(DeviceInformation.LocId, FtOpenType.OpenByLocation, out _ftHandle);

            if (ftStatus != FtStatus.Ok)
            {
                throw new IOException($"Failed to open device {DeviceInformation.Description}, status: {ftStatus}");
            }

            ftStatus = FtFunction.FT4222_SetSuspendOut(_ftHandle, false);
            if (ftStatus != FtStatus.Ok)
            {
                throw new IOException($"Can't initialize GPIO for device {DeviceInformation.Description} changing Suspend out mode, status: {ftStatus}");
            }

            ftStatus = FtFunction.FT4222_SetWakeUpInterrupt(_ftHandle, false);
            if (ftStatus != FtStatus.Ok)
            {
                throw new IOException($"Can't initialize GPIO for device {DeviceInformation.Description} removing wake up interrupt, status: {ftStatus}");
            }

            for (int i = 0; i < PinCountConst; i++)
            {
                _gpioDirections[i] = GpioPinMode.Output;
            }

            ftStatus = FtFunction.FT4222_GPIO_Init(_ftHandle, _gpioDirections);

            if (ftStatus != FtStatus.Ok)
            {
                throw new IOException($"Can't initialize GPIO for device {DeviceInformation.Description}, status: {ftStatus}");
            }
        }
Example #2
0
        /// <summary>
        /// Create an SPI FT4222 class
        /// </summary>
        /// <param name="settings">SPI Connection Settings</param>
        public Ft4222Spi(SpiConnectionSettings settings)
        {
            _settings = settings;
            // Check device
            var devInfos = Device.FtCommon.FtCommon.GetDevices();

            if (devInfos.Count == 0)
            {
                throw new IOException("No FTDI device available");
            }

            // Select the one from bus Id
            // FT4222 propose depending on the mode multiple interfaces. Only the A is available for SPI or where there is none as it's the only interface
            var devInfo = devInfos.Where(m => m.Description == "FT4222 A" || m.Description == "FT4222").ToArray();

            if ((devInfo.Length == 0) || (devInfo.Length < _settings.BusId))
            {
                throw new IOException($"Can't find a device to open SPI on index {_settings.BusId}");
            }

            DeviceInformation = new(devInfo[_settings.BusId]);
            // Open device
            var ftStatus = FtFunction.FT_OpenEx(DeviceInformation.LocId, FtOpenType.OpenByLocation, out _ftHandle);

            if (ftStatus != FtStatus.Ok)
            {
                throw new IOException($"Failed to open device {DeviceInformation.Description} with error: {ftStatus}");
            }

            // Set the clock but we need some math
            var(ft4222Clock, tfSpiDiv) = CalculateBestClockRate();

            ftStatus = FtFunction.FT4222_SetClock(_ftHandle, ft4222Clock);
            if (ftStatus != FtStatus.Ok)
            {
                throw new IOException($"Failed to set clock rate {ft4222Clock} on device: {DeviceInformation.Description}with error: {ftStatus}");
            }

            SpiClockPolarity pol = SpiClockPolarity.ClockIdleLow;

            if ((_settings.Mode == SpiMode.Mode2) || (_settings.Mode == SpiMode.Mode3))
            {
                pol = SpiClockPolarity.ClockIdelHigh;
            }

            SpiClockPhase pha = SpiClockPhase.ClockLeading;

            if ((_settings.Mode == SpiMode.Mode1) || (_settings.Mode == SpiMode.Mode3))
            {
                pha = SpiClockPhase.ClockTailing;
            }

            // Configure the SPI
            ftStatus = FtFunction.FT4222_SPIMaster_Init(_ftHandle, SpiOperatingMode.Single, tfSpiDiv, pol, pha,
                                                        (byte)_settings.ChipSelectLine);
            if (ftStatus != FtStatus.Ok)
            {
                throw new IOException($"Failed setup SPI on device: {DeviceInformation.Description} with error: {ftStatus}");
            }
        }
Example #3
0
        /// <summary>
        /// Create a FT4222 I2C Device
        /// </summary>
        /// <param name="deviceInformation">Device information. Use FtCommon.GetDevices to get it.</param>
        public Ft4222I2cBus(Ft4222Device deviceInformation)
        {
            switch (deviceInformation.Type)
            {
            case FtDeviceType.Ft4222HMode0or2With2Interfaces:
            case FtDeviceType.Ft4222HMode1or2With4Interfaces:
            case FtDeviceType.Ft4222HMode3With1Interface:
                break;

            default: throw new ArgumentException($"Unknown device type: {deviceInformation.Type}");
            }

            DeviceInformation = deviceInformation;
            // Open device
            var ftStatus = FtFunction.FT_OpenEx(DeviceInformation.LocId, FtOpenType.OpenByLocation, out _ftHandle);

            if (ftStatus != FtStatus.Ok)
            {
                throw new IOException($"Failed to open device {DeviceInformation.Description}, status: {ftStatus}");
            }

            // Set the clock
            FtClockRate ft4222Clock = FtClockRate.Clock24MHz;

            ftStatus = FtFunction.FT4222_SetClock(_ftHandle, ft4222Clock);
            if (ftStatus != FtStatus.Ok)
            {
                throw new IOException($"Failed set clock rate {ft4222Clock} on device: {DeviceInformation.Description}, status: {ftStatus}");
            }

            // Set the device as I2C Master
            ftStatus = FtFunction.FT4222_I2CMaster_Init(_ftHandle, I2cMasterFrequencyKbps);
            if (ftStatus != FtStatus.Ok)
            {
                throw new IOException($"Failed to initialize I2C Master mode on device: {DeviceInformation.Description}, status: {ftStatus}");
            }
        }
Example #4
0
        /// <summary>
        /// Create a FT4222 GPIO driver
        /// </summary>
        /// <param name="device">An FT Device</param>
#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.
        internal Ft4222Gpio(Ft4222Device device)
#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.
        {
            InitializeGpio(device);
        }