How to write C# programs using the new DLL starting from the old DLL.
There are some major differences between the two DLLs.
feature | Dewesoft C++ DLL | Trenz Electronic C# DLL |
programming language | C++ | C# |
architecture | standard | stacked |
Handles | present | absent |
structures | embedded | defined in Cypress CyAPI.h |
parameters* | less | more |
freedom* | less | more |
buffer size | 2 Kbyte (fixed) | 4 Kbyte or more (it can be changed) |
Dewesoft C++ DLL | Trenz Electronic C# DLL |
HANDLE m_handle = 0; | CyUSBDevice TE_USB_FX2_USBDevice = null; The handles are internally managed by CyAPI.lib and there is no need to expose them to the user. CyUSBDevice TE_USB_FX2_USBDevice take the place of handles for C# programmers. |
cout << endl << TE0300_ScanCards() << endl; | int NumberOfCardAttached = TE_USB_FX2.TE_USB_FX2.TE_USB_FX2_ScanCards(ref USBdevList); |
TE0300_Open(&m_handle, 0)!=0 | TE_USB_FX2.TE_USB_FX2.TE_USB_FX2_Open TE_USB_FX2_Open() In the code, it is possible to call TE_USB_FX2_Open() where TE0300_Open() is used. TE_USB_FX2_Open() act as Close() for other TE USB handles already open When a new handle to the device driver is open (TE_USB_FX2_Open() run successfully) other internal handles (inside USBDeviceList) are automatically closed by TE_USB_FX2_Open() function. No more than one handle can be active on the same time. It is a behavior inherithed by CyAPI.dll Open() function. For this reason, TE_USB_FX2_Close() function is almost useless. TE_USB_FX2_Open() as SelectCard() TE_USB_FX2_Open(TE_USB_FX2_USBDevice, USBdevList, x) acts more as a SelectCard() function because the list of USB devices is already created in USBdevList. TE_USB_FX2_USBDevice is the selected device number x (0 in this case). |
TE0300_Open(&m_handle, 1)!=0 | TE_USB_FX2.TE_USB_FX2.TE_USB_FX2_Open |
TE0300_Close(&m_handle); | TE_USB_FX2.TE_USB_FX2.TE_USB_FX2_Close
In the code, it is not recommended to call TE_USB_FX2_Close() where TE0300_Close() is used. This function differs from its homonym of the previous TE0300DLL.dll in that it does not close a Handle but disposes (erases) all USB devices in the list USBdevList. The reason of this behavior is due to the CyUSB.dll as explained by Cypress document CyUSB.NET.pdf, pages 132-133 and pages 139-140: "You should never invoke the Dispose() method of a USBDevice directly. Rather, the appropriate technique is to call the Dispose() method of the USBDeviceList object that contains the USBDevice objects". |
TE0300_SendCommand(handle, cmd, cmd_length, reply, &reply_length, timeout) | TE_USB_FX2.TE_USB_FX2.TE_USB_FX2_SendCommand |
Dewesoft C++ DLL | Trenz Electronic C# DLL |
void ResetFX2FifoStatus(HANDLE handle) { cout << endl << "Resetting all FIFOs" << endl; byte cmd[64], reply[64]; int cmd_length = 64; int reply_length = 64; cmd[0] = 0xA4;//command RESET_FIFO_STATUS cmd[1] = 0;//RESET all FIFOs if (TE0300_SendCommand(handle, cmd, cmd_length, reply, &reply_length, 1000)) cout << "Error" << endl; cmd[0] = 0xA0;//command INITIALIZE cmd[1] = 1;//FIFO mode if (TE0300_SendCommand(handle, cmd, cmd_length, reply, &reply_length, 1000)) cout << "Error" << endl; } | static void ResetFX2FifoStatus(CyUSBDevice TE_USB_FX2_USBDevice) { if (TE_USB_FX2_USBDevice == null) { Console.WriteLine("Error,no device is selected"); return; } Console.WriteLine("Resetting all FIFOs"); byte[] cmd = new byte[64]; byte[] reply = new byte[64]; int cmd_length = 64; int reply_length = 64; uint TIMEOUT_MS = 100000; cmd[0] = (byte)FX2_Commands.RESET_FIFO_STATUS; cmd[1] = 0; //reset all fifos if (TE_USB_FX2.TE_USB_FX2.TE_USB_FX2_SendCommand(ref TE_USB_FX2_USBDevice, ref cmd, ref cmd_length, ref reply, ref reply_length, TIMEOUT_MS) == false) Console.WriteLine("Error Send Command Reset all fifos"); cmd[0] = (byte)FX2_Commands.INITALIZE; //0xA0;//command INITIALIZE cmd[1] = 1;//FIFO mode if (TE_USB_FX2.TE_USB_FX2.TE_USB_FX2_SendCommand(ref TE_USB_FX2_USBDevice, ref cmd, ref cmd_length, ref reply, ref reply_length, TIMEOUT_MS) == false) Console.WriteLine("Error Switch Mode Fifo Mode"); } |
Dewesoft C++ DLL | Trenz Electronic C# DLL |
void ReadData(unsigned int handle) { int packetlen = RX_PACKET_LEN; unsigned int packets = 1200; byte * data; data = new byte [RX_PACKET_LEN*packets]; //allocate memory unsigned int total_cnt = 0; unsigned int errors = 0; ResetFX2FifoStatus(handle); SendFPGAcommand(handle,FX22MB_REG0_START_TX); //starts test ElapsedTime.Start(); //StopWatch start for (unsigned int i = 0; i < packets; i++) { packetlen = RX_PACKET_LEN; if (TE0300_GetData(handle, data+total_cnt, &packetlen, PI_EP6,TIMEOUT_MS)) { cout << "ERROR" << endl; errors++; break; } total_cnt += packetlen; } TheElapsedTime = ElapsedTime.Stop(false); //DEBUG StopWatch timer SendFPGAcommand(handle,FX22MB_REG0_STOP); //stops test delete data; } | static void ReadDataFPGAIntegrity(CyUSBDevice TE_USB_FX2_USBDevice, int BUFFER_SIZE, uint TIMEOUT_MS) { if (TE_USB_FX2_USBDevice == null) { Console.WriteLine("Error,no device is selected"); return; } int packetlen = RX_PACKET_LEN; int packets = 1200; byte[] data = new byte[packetlen*packets]; byte[] buffer = new byte[packetlen]; int total_cnt = 0; int errors = 0; int PI_EP6 = 6; bool bResultXfer = false; ResetFX2FifoStatus(TE_USB_FX2_USBDevice); SendFPGAcommand(ref TE_USB_FX2_USBDevice, MB_Commands.FX22MB_REG0_START_TX, TIMEOUT_MS); //starts test test_cnt = 0; total_cnt = 0; Stopwatch stopWatch = new Stopwatch(); stopWatch.Start(); for (int i = 0; i < packets; i++) { packetlen = RX_PACKET_LEN; //fixed (byte* buf = &data[total_cnt]) bResultXfer = TE_USB_FX2.TE_USB_FX2.TE_USB_FX2_GetData(ref TE_USB_FX2_USBDevice, ref buffer, ref packetlen, PI_EP6, TIMEOUT_MS,BUFFER_SIZE); Buffer.BlockCopy(buffer,0, data, total_cnt, packetlen); if (bResultXfer == false) { Console.WriteLine("Error Get Data"); errors++; break; } total_cnt += packetlen; } stopWatch.Stop(); TimeSpan ts = stopWatch.Elapsed; SendFPGAcommand(ref TE_USB_FX2_USBDevice, MB_Commands.FX22MB_REG0_STOP, TIMEOUT_MS); //stops test  } |
Dewesoft C++ DLL | Trenz Electronic C# DLL |
void WriteData(unsigned int handle) | static void WriteData(CyUSBDevice TE_USB_FX2_USBDevice, int BUFFER_SIZE, uint TIMEOUT_MS) |