Add DE4 support #115
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Add DE4 support #115
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whitequark
reviewed
Nov 24, 2020
nmigen_boards/de4.py
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| Resource("clk50", 5, Pins("A19", dir="i"), | ||
| Clock(50e6), Attrs(io_standard="1.8-V")), | ||
| Resource("clk100", 0, Pins("A21", dir="i"), | ||
| Clock(100e6), Attrs(io_standard="1.8-V")), #100MHz assumes SW7 is set to 00 |
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Please make this configurable; see the Atlys board for an example of how to do so.
whitequark
requested changes
Nov 24, 2020
because it can be different speeds
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Added support for the DE4 (Stratix IV devboard). Currently only covers the basic functionality: LEDs, buttons, switches, GPIO headers, clock inputs. Have tested with the blinky.
Something I forgot to add: it's written using device="EP4SGX530", but I believe the DE4 is also available with the EP4SGX230. From reading the discussion on another "add board support" PR, I also realise that the same issue applies to the "clk100" resource, which currently works on the assumption that the configuration switches for one of the clock inputs are set to provide a 100MHz clock.