Mike Reynolds

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  1. Hi @JColvin, Thanks for your two replies. In our Vivado project the Rev E Flash is identified as a Micron device (as its labelling suggests). The Micron and Spansion devices are not identical. Rev E is therefore unusable for us. We are using the Arty S7s for prototyping purposes associated with an in-house board using the Spansion FLASH. We don't have time to further investigate this. We'll continue using the Rev B boards to get the job done. Thanks again for your help. Regards, MIke.
  2. Hi @JColvin, All the boards are -50. JP1 is loaded on all the boards. We ran the General IO Demo on the Rev E and also on one of the Rev Bs. The demo project successfully recognizes the FPGA in Hardware Manager. However, the Rev E FPGA is not recognized in our project. We can program our bitfile from the demo project, and read registers over the UART. So there’s something weird going on in Vivado, but the JTAG/UART seems OK at a hardware level. Regarding the FLASH devices here are two photos. The Rev B photo is clear. The Rev E photo is less clear since the marking is very faint. Rev B Rev E Looking up the Rev E FLASH marking at http://www.bios-chip24.com/epages/63730052.sf/en_GB/?ObjectPath=/Shops/63730052/Products/33320 appears to indicate it is a Micron device. Does the FLASH device look incorrect to you? It certainly doesn't look like a Spansion device. Any further thoughts? Cheers, Mike.
  3. Hi JC, Thanks for your reply. We have 3 Rev B units, all of which are performing faultlessly and have been for several months. I'll try to arrange a photo of the Rev E unit tomorrow. My main issue is with the serial comms on the Rev E. Any thoughts on that? ie Has _anything_ changed in this part of the board? Cheers, Mike.
  4. Gday, I have been using a set of Rev B Arty S7 boards over the last few months with great success. Nice board. I have a UART in the FPGA and access it via the Shared USB JTAG / UART port connected to a Windows 7 machine. Today I received an additional Arty S7 which is a Rev E. The UART isn't working. If I plug a Rev B in it works. I also notice the Rev E has a different SPI FLASH brand, requiring a different setup in Vivado. Any advice on how to get the UART port working appreciated. Is an updated Windows driver required perhaps? Mike.