takhar 0 Report post Posted August 16, 2015 Hi AllJust got my Papilio Duo board.Followed the steps in start Videos1. Installed Design Lab 1.0.7 and Xilinx SDK2. Connected the Papilio board with the USB cable. Moved the switch to USB3. Observe the LED on4. See the Papilio board show up on COM5 port and selected the right board in tools>Board5. Click the PAPILIO DUO PROJECTS , QuickStart See following print outs on the Design Lab with an error. Programming to SPI FlashUsing devlist.txtInvalid chain position 0, position must be less than 0 (but not less than 0).Unknown Papilio BoardUsing devlist.txtUSB transactions: Write 2 read 1 retries 0Invalid chain position 0, position must be less than 0 (but not less than 0).IOException: Cannot open file Any help is appreciated to understand the exception. Share this post Link to post Share on other sites
Jack Gassett 0 Report post Posted August 17, 2015 Hello takhar, That error generally means that there is a problem with the connection between the FT2232H USB chip and the Spartan 6 FPGA. It should normally be caught at the factory before it ever gets shipped out but sometimes something happens after leaving the factory, such as a weak solder joint etc. If you connect to the FPGA serial port at 115200 8N1 do you see an ASCII table being printed out? Does the use LED blink (by pin13)? These would all be indicators that the board worked well enough at the factory to pass the automated tests and something happened during shipping. Either way, it will probably be easiest for us to send you a replacement board. If you send us an email at support@gadgetfactory.net with a link to the forum thread and your current shipping address we will send you out a replacement board ASAP. Jack. Share this post Link to post Share on other sites
takhar 0 Report post Posted August 18, 2015 thanks Jack. Sent the request for a board replacement. Share this post Link to post Share on other sites