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miho |
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// Include FTDI library |
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#include "mlab_xvcd_port_FTDI.h" |
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// JTAG Output Pin Mask |
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#define IO_OUTPUT_MASK (PORT_TCK|PORT_TDI|PORT_TMS|PORT_LED) // Mask for all Output Pins |
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// Global Variables |
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FT_HANDLE ftHandle; // Handle for FTDI device |
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bool ftHandleValid = false; // Valid Handle |
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unsigned char PinStatus = 0; // Status of DBUS pins |
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unsigned char LedMask = 0; // LED Mask for DBUS data transfer |
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// Convert string to int (both decimal and hex string) |
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int atoiEx(char *s) |
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{ |
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if (s[0]=='0' && (s[1]=='x' || s[1]=='X')) |
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{ |
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// Hex Value |
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int i; |
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#pragma warning(disable: 4996) // Disable MS warning about scanf |
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sscanf(s, "%x", &i); |
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return i; |
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} |
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else |
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{ |
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// Decimal Value |
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return atoi(s); |
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} |
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} |
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// Print FTDI Pin Names (from mask value) |
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void jtagPrintPinNames(int pinMask) |
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{ |
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// 16bit (MSB is CBUS, LSB is DBUS) |
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int bit=15; |
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bool useDelimiter=false; |
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do |
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{ |
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int mask = 1 << bit; |
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if (pinMask & mask) |
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{ |
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if (useDelimiter) |
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{ |
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printf("+"); |
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} |
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if (bit > 7) |
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{ |
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printf("CBUS%c", '0' + bit - 8); |
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} |
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else |
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{ |
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printf("DBUS%c", '0' + bit); |
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switch (mask) |
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{ |
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case FTDI_TXD: printf("(TXD)"); break; |
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case FTDI_RXD: printf("(RXD)"); break; |
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case FTDI_RTS: printf("(RTS)"); break; |
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case FTDI_CTS: printf("(CTS)"); break; |
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case FTDI_DTR: printf("(DTR)"); break; |
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case FTDI_DSR: printf("(DSR)"); break; |
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case FTDI_DCD: printf("(DCD)"); break; |
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case FTDI_RI: printf("(RI) "); break; |
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} |
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} |
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useDelimiter = true; |
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} |
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} |
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while (bit-- > 0); |
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} |
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// Verify pin usage |
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void jtagCheckPinConfig() |
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{ |
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// Check CBUS usage |
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if ( (PORT_TCK) > 0x00FF ) |
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fprintf(stderr, "\nFTDI: INTERNAL ERROR: TCK can't use CBUS signal"), exit(2); |
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if ( (PORT_TCK) == 0 ) |
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fprintf(stderr, "\nFTDI: INTERNAL ERROR: TCK not defined"), exit(2); |
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if ( (PORT_TDI) > 0x00FF ) |
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fprintf(stderr, "\nFTDI: INTERNAL ERROR: TDI can't use CBUS signal"), exit(2); |
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if ( (PORT_TDI) == 0 ) |
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fprintf(stderr, "\nFTDI: INTERNAL ERROR: TDI not defined"), exit(2); |
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if ( (PORT_TDO) > 0x00FF ) |
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fprintf(stderr, "\nFTDI: INTERNAL ERROR: TDO can't use CBUS signal"), exit(2); |
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if ( (PORT_TDO) == 0 ) |
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fprintf(stderr, "\nFTDI: INTERNAL ERROR: TDO not defined"), exit(2); |
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if ( (PORT_TMS) > 0x00FF) |
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fprintf(stderr, "\nFTDI: INTERNAL ERROR: TMS can't use CBUS signal"), exit(2); |
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if ( (PORT_TMS) == 0 ) |
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fprintf(stderr, "\nFTDI: INTERNAL ERROR: TMS not defined"), exit(2); |
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if ( (PORT_LED) > 0x0FFF) |
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fprintf(stderr, "\nFTDI: INTERNAL ERROR: LED can't use CBUS signal > 3"), exit(2); |
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} |
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// Print JTAG Pin Assignment |
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void jtagPrintPinConfig() |
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{ |
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// Print pin masks human readable |
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printf(" JTAG Port Pins "); printf("TCK->"); jtagPrintPinNames(PORT_TCK); printf("\n"); |
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printf(" "); printf("TDI->"); jtagPrintPinNames(PORT_TDI); printf("\n"); |
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printf(" "); printf("TDO->"); jtagPrintPinNames(PORT_TDO); printf("\n"); |
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printf(" "); printf("TMS->"); jtagPrintPinNames(PORT_TMS); printf("\n"); |
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printf(" "); printf("LED->"); jtagPrintPinNames(PORT_LED); printf("\n"); |
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} |
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// Connect to FTDI driver |
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int jtagOpenPort(int findDeviceBy, char *findDeviceByStr) |
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{ |
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// Enumerate FTDI Devices |
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// ---------------------- |
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FT_STATUS ftStatus; |
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// Print Library Version |
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printf("FTDI Connect\n"); |
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DWORD dwLibraryVer; |
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ftStatus = FT_GetLibraryVersion(&dwLibraryVer); |
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if (ftStatus == FT_OK) |
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printf(" Library Version 0x%x\n", dwLibraryVer); |
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else |
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fprintf(stderr, "\nFTDI: Error Reading Library Version\n"); |
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// Create Device Information List |
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DWORD numDevs = 0; |
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ftStatus = FT_CreateDeviceInfoList(&numDevs); |
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if (ftStatus == FT_OK) |
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printf(" Devices Found %d\n", numDevs); |
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else |
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printf(" No FTDI Device Found\n"); |
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if (numDevs==0) |
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return -1; |
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// Print Config Info |
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jtagPrintPinConfig(); |
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jtagCheckPinConfig(); |
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printf("\n"); |
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// List All FTDI Devices |
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FT_HANDLE ftHandleTemp; |
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DWORD Flags; |
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DWORD ID; |
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DWORD Type; |
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DWORD LocId; |
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char SerialNumber[16]; |
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char Description[64]; |
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for (DWORD i=0; i<numDevs; i++) |
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{ |
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ftStatus = FT_GetDeviceInfoDetail(i, &Flags, &Type, &ID, &LocId, SerialNumber, Description, &ftHandleTemp); |
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if (ftStatus == FT_OK) |
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{ |
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printf("Device %d\n", i); |
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miho |
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if (Flags && FT_FLAGS_OPENED) |
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{ |
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printf(" Description Device is used by another process\n"); |
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} |
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else |
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{ |
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printf(" Description \"%s\"\n", Description); |
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printf(" SerialNumber \"%s\"\n", SerialNumber); |
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//printf(" Flags 0x%x\n", Flags); |
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//printf(" Type 0x%x\n", Type); |
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//printf(" ID 0x%x\n", ID); |
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printf(" Location 0x%x\n", LocId); |
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} |
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printf("\n"); |
| 2697 |
miho |
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} |
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} |
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// Select one Device and Open It |
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unsigned int selectedDeviceIndex = 0; |
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if (findDeviceBy==0) |
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{ |
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// Select by Device Number |
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selectedDeviceIndex = atoiEx(findDeviceByStr); |
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if (numDevs<=selectedDeviceIndex) |
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{ |
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fprintf(stderr, " There is no Device Number %d\n\n", selectedDeviceIndex); |
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return -1; |
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} |
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// Open device |
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ftStatus = FT_Open(selectedDeviceIndex, &ftHandle); |
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} |
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else |
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{ |
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// Select by Description / Serial Number / Location |
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if (findDeviceBy==FT_OPEN_BY_LOCATION) |
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{ |
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// Open device (location is number, not string) |
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int findDeviceByInt = atoiEx(findDeviceByStr); |
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ftStatus = FT_OpenEx((void*)findDeviceByInt, findDeviceBy, &ftHandle); |
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} |
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else |
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{ |
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ftStatus = FT_OpenEx(findDeviceByStr, findDeviceBy, &ftHandle); |
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} |
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} |
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// Check Status |
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if (ftStatus == FT_OK) |
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{ |
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ftHandleValid = true; |
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//printf(" FTDI Device Opened\n"); |
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} |
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else |
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{ |
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fprintf(stderr, " Can't Open FTDI Device (error code %d)\n\n", ftStatus); |
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return -1; |
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} |
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// Selected Device |
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ftStatus = FT_GetDeviceInfo(ftHandle, &Type, &ID, SerialNumber, Description, 0); |
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if (ftStatus == FT_OK) |
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{ |
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printf("Selected Device\n"); |
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printf(" Description \"%s\"\n", Description); |
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printf(" SerialNumber \"%s\"\n", SerialNumber); |
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//printf(" Type 0x%x\n", Type); |
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//printf(" ID 0x%x\n", ID); |
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} |
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// Get Driver Version |
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DWORD dwDriverVer; |
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ftStatus = FT_GetDriverVersion(ftHandle, &dwDriverVer); |
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if (ftStatus == FT_OK) |
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{ |
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printf(" Device Driver Ver 0x%x\n", dwDriverVer); |
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} |
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else |
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{ |
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fprintf(stderr, "FTDI: Error Reading Driver Version\n"); |
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} |
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// Set BitBang Mode |
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ftStatus = FT_SetBitMode(ftHandle, (UCHAR)IO_OUTPUT_MASK, FT_BITMODE_SYNC_BITBANG); //FT_BITMODE_SYNC_BITBANG / FT_BITMODE_ASYNC_BITBANG |
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if (ftStatus == FT_OK) |
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{ |
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// printf("Set BitBang Mode\n"); |
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} |
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else |
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{ |
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fprintf(stderr, "FTDI: Set BitBang Mode Failed %d\n", ftStatus); |
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} |
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// Set Baud Rate |
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ftStatus = FT_SetBaudRate(ftHandle, BAUD_RATE); |
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if (ftStatus == FT_OK) |
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{ |
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printf(" Baud Rate %d\n", BAUD_RATE); |
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} |
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else |
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{ |
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fprintf(stderr, "FTDI: Set Baud Rate Failed %d\n", ftStatus); |
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} |
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ftStatus = FT_Purge(ftHandle, FT_PURGE_RX | FT_PURGE_TX); // Purge both Rx and Tx buffers |
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if (ftStatus == FT_OK) |
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{ |
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// printf("Purge \n"); |
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} |
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else |
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{ |
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fprintf(stderr, "FTDI: FT_Purge failed %d\n", ftStatus); |
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} |
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ftStatus = FT_SetLatencyTimer(ftHandle, USB_LATENCY); // Latency in ms |
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if (ftStatus == FT_OK) |
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{ |
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printf(" USB Latency %d\n", USB_LATENCY); |
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} |
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else |
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{ |
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fprintf(stderr, "FTDI: Set USB Latency Timer Failed %d\n", ftStatus); |
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} |
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printf("\n"); |
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return 0; |
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} |
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// Enable or Disable Activity LED |
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void jtagSetLED(bool LedEnable) |
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{ |
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// DBUS Connected LED (BitBang Mode) |
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LedMask = LedEnable ? PORT_LED & 0xFF : 0; // Set mask for jtagScan function |
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if (PORT_LED & 0xFF) |
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{ |
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// Set / Reset LED Pin |
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DWORD BytesWritten; |
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DWORD BytesReceived; |
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unsigned char DataOut = LedMask | (PinStatus & ~PORT_LED); // Preserve PinStatus |
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unsigned char Dummy; |
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FT_Write(ftHandle, &DataOut, 1, &BytesWritten ); // Send 1 byte |
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FT_Read (ftHandle, &Dummy, 1, &BytesReceived); // Read 1 byte |
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//printf("[PinStatus %x DataOut %x]", PinStatus, DataOut); |
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} |
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// CBUS Connected LED (BitBang Mode) 1 and 0 state of the port |
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const unsigned char On = ( (((PORT_LED) & 0x0F00) >> 4) | (((PORT_LED) & 0x0F00) >> 8) ); |
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const unsigned char Off = ( (((PORT_LED) & 0x0F00) >> 4) ); |
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if (On) |
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{ |
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FT_STATUS ftStatus; |
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// Set / Reset LED Pin |
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ftStatus = FT_SetBitMode(ftHandle, LedEnable ? On : Off, FT_BITMODE_CBUS_BITBANG); |
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// Return to used Mode |
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ftStatus = FT_SetBitMode(ftHandle, (UCHAR)IO_OUTPUT_MASK, FT_BITMODE_SYNC_BITBANG); //FT_BITMODE_SYNC_BITBANG / FT_BITMODE_ASYNC_BITBANG |
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} |
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} |
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// Set port to Idle state |
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void jtagSetIdle() |
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{ |
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char b = 0; // Idle State for JTAG pins |
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DWORD BytesWritten; |
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DWORD BytesReceived; |
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// Write (idle state of pins) |
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FT_Write(ftHandle, &b, 1, &BytesWritten); |
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// Read (not to left data in input fifo) |
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FT_Read(ftHandle, &b, 1, &BytesReceived); |
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} |
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// Close FTDI connection |
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int jtagClosePort() |
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{ |
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if (ftHandleValid) |
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{ |
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jtagSetLED(false); |
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// Switch Off the Outputs |
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FT_Purge(ftHandle, FT_PURGE_RX | FT_PURGE_TX); // Purge both Rx and Tx buffers |
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FT_SetBitMode(ftHandle, 0, FT_BITMODE_SYNC_BITBANG); |
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// Close FTDI Lib |
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FT_Close(ftHandle); |
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ftHandleValid = false; |
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} |
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return 0; |
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} |
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// Send data to JTAG port and bring returned data |
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int jtagScan(const unsigned char *TMS, const unsigned char *TDI, unsigned char *TDO, int bits) |
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{ |
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FT_STATUS ftStatus; |
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DWORD BytesWritten; |
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DWORD BytesReceived; |
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int r, t; |
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// Decompose TDI and TMS byte array to raw bitstream |
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//(1 TDI bit + 1 TMS bit --> 1 byte + 1 byte with TCK) |
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unsigned char buffer[16384]; |
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if (bits > sizeof(buffer)/2) |
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{ |
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fprintf(stderr, "\n FTDI: Out of Buffer Space for %d bits\n", bits); |
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return -1; |
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} |
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// Switch LED On |
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jtagSetLED(true); |
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// Prepare transmit data to buffer |
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for (int i = 0; i < bits; ++i) |
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{ |
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unsigned char v = 0 | LedMask; // LED On / Off (on DBUS) |
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if (TMS[i/8] & (1<<(i&7))) |
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{ |
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v |= (PORT_TMS); |
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// printf("T"); |
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} |
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else |
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{ |
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// printf("t"); |
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} |
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if (TDI[i/8] & (1<<(i&7))) |
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{ |
|
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394 |
v |= (PORT_TDI); |
|
|
395 |
// printf("|"); |
|
|
396 |
} |
|
|
397 |
else |
|
|
398 |
{ |
|
|
399 |
// printf("."); |
|
|
400 |
} |
|
|
401 |
buffer[i * 2 + 0] = v; |
|
|
402 |
buffer[i * 2 + 1] = v | (PORT_TCK); |
|
|
403 |
} |
|
|
404 |
PinStatus = buffer[bits*2-1]; |
|
|
405 |
// printf("\n"); |
|
|
406 |
|
|
|
407 |
// Send data to FTDI |
|
|
408 |
r = 0; |
|
|
409 |
while (r < bits * 2) |
|
|
410 |
{ |
|
|
411 |
t = bits * 2 - r; |
|
|
412 |
if (t > FTDI_MAX_WRITESIZE) |
|
|
413 |
{ |
|
|
414 |
t = FTDI_MAX_WRITESIZE; |
|
|
415 |
} |
|
|
416 |
|
|
|
417 |
// printf("writing %d bytes to FTDI\n", t); |
|
|
418 |
ftStatus = FT_Write(ftHandle, buffer+r, t, &BytesWritten); |
|
|
419 |
if (ftStatus != FT_OK) |
|
|
420 |
{ |
|
|
421 |
fprintf(stderr, "\n FTDI: Error Writing\n"); |
|
|
422 |
return -2; |
|
|
423 |
} |
|
|
424 |
|
|
|
425 |
int i = 0; |
|
|
426 |
|
|
|
427 |
while (i < t) |
|
|
428 |
{ |
|
|
429 |
FT_SetTimeouts(ftHandle, 5000, 0); // timeout 5 sec |
|
|
430 |
ftStatus = FT_Read(ftHandle, buffer+r+i, t-i, &BytesReceived); |
|
|
431 |
if (ftStatus == FT_OK) |
|
|
432 |
{ |
|
|
433 |
if (BytesReceived == t-i) |
|
|
434 |
{ |
|
|
435 |
// FT_Read OK |
|
|
436 |
// printf("Read from FTDI %d bytes", BytesReceived); |
|
|
437 |
} |
|
|
438 |
else |
|
|
439 |
{ |
|
|
440 |
// FT_Read Timeout |
|
|
441 |
fprintf(stderr, "\n FTDI: Read Timeout\n"); |
|
|
442 |
return -2; |
|
|
443 |
} |
|
|
444 |
} |
|
|
445 |
else |
|
|
446 |
{ |
|
|
447 |
fprintf(stderr, "\n FTDI: Error Reading\n");// Error |
|
|
448 |
return -2; |
|
|
449 |
} |
|
|
450 |
|
|
|
451 |
i += BytesReceived; |
|
|
452 |
} |
|
|
453 |
|
|
|
454 |
r += t; |
|
|
455 |
} |
|
|
456 |
|
|
|
457 |
// Pack TDO bitstream from receive buffer to byte array |
|
|
458 |
memset(TDO, 0, (bits + 7) / 8); |
|
|
459 |
|
|
|
460 |
for (int i = 0; i < bits; ++i) |
|
|
461 |
{ |
|
|
462 |
if (buffer[i * 2 + 1] & (PORT_TDO)) |
|
|
463 |
{ |
|
|
464 |
TDO[i/8] |= 1 << (i&7); |
|
|
465 |
// printf("H"); |
|
|
466 |
} |
|
|
467 |
else |
|
|
468 |
{ |
|
|
469 |
// printf("L"); |
|
|
470 |
} |
|
|
471 |
} |
|
|
472 |
// printf("\n"); |
|
|
473 |
// printf(" Bits %d ", bit_counter); |
|
|
474 |
|
|
|
475 |
// Switch LED Off |
|
|
476 |
jtagSetLED(false); |
|
|
477 |
|
|
|
478 |
return 0; |
|
|
479 |
} |