Hi all ,I have designed a USB blaster cable using a FT245BM as USB to parallel conveter and a CPLD. i have also installed the driver necessary for FT245BM from the website. I have also programmed the CPLD accordingly. The cpld code is in such a fashion that a read (RXF#) signal has to go low , then only the state machine inside the cpld would work, but inspite of installing the driver (ft245bm), this signal doesnot go low. also in the programmer window , only byteblaster hardware shows up and not usb blaster. I have also loaded the EEPROM neccessary for the ft245bm chip. please find the schematic for the ckit attached. Please help me in this regard Your co-operation is highly appreciated. regards Niraj
You may want to check, if you have programmed a VID/PID combination to the EEPROM, that's recognized by the USB Blaster driver. See quartus\drivers\usb-blaster\usbblstr.inf.
Hi,When I insert the device through a usb cable , it gets displayed in the device manager as USB serial port with communication port as shown in the attachements. So the device gets added as a serial port device rather than a USB device. And so it doesnt gets displayed in the Programmer window. can u plz throw some light on the problem. thanks and sincere regards Niraj