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15 commits

Author SHA1 Message Date
Konrad Beckmann 981e674081 vendor.lattice_ecp5: Add support for io with xdr=4 
This adds support for IOs with xdr=4 using the
IDDRX2F and ODDRX2F primitives.
 2020-07-06 16:12:07 +00:00
whitequark fb90043460 lib.io: use keyword-only arguments in Pin(). 2019-10-16 19:50:04 +00:00
whitequark db960e7c30 Consistently use {!r}, not '{!r}' in diagnostics. 
This can cause confusion:
  * If the erroneous object is None, it is printed as 'None', which
    appears as a string (and could be the result of converting None
    to a string.)
  * If the erroneous object is a string, it is printed as ''<val>'',
    which is a rather strange combination of quotes.
 2019-10-11 11:47:42 +00:00
whitequark 73244f2bd2 lib.io: style. NFC. 2019-09-12 13:51:18 +00:00
Staf Verhaegen ff343d5cf0 Pin: Add extra hierarchy level for name derivation 2019-07-14 19:30:12 +00:00
whitequark b42043f764 lib.io: add i_clk and o_clk to pin layout with xdr>=1. 2019-06-03 07:43:31 +00:00
whitequark 1eee7cd76f lib.io: allow dir="oe". 
Although a dir="oe" pin is generally equivalent to dir="io" pin with
the i* signal(s) disconnected, they are not equivalent, because some
pins may not be able to support input buffers at all, either because
there are no input buffers, or because the input buffers are consumed
by some other resource.

E.g. this can happen on iCE40 when the input buffer is consumed by
a PLL.
 2019-06-03 04:28:53 +00:00
whitequark c30617fc05 lib.io: allow Pin(xdr=0), representing a combinatorial I/O buffer. 2019-06-03 03:36:32 +00:00
Jean-François Nguyen 6a77122c2e lib.io: add a name argument to the Pin constructor. 2019-04-24 22:02:20 +00:00
whitequark 287a0531b3 lib.io: rework TSTriple/Tristate interface to use pin_layout/Pin. 2019-04-15 16:27:23 +00:00
whitequark 4948162f33 hdl.ir: rename .get_fragment() to .elaborate(). 
Closes #9.
 2019-01-26 02:31:12 +00:00
whitequark c4276f7cf7 lib.io: pass pin to platform.get_tristate(). 2019-01-14 21:39:19 +00:00
whitequark b534e92dd5 hdl.ir: allow explicitly requesting flattening. 2019-01-14 17:04:23 +00:00
whitequark 6f66885c09 lib.io: lower to platform-independent tristate buffer. 2019-01-14 16:50:04 +00:00
whitequark 790eb05a92 Rename fhdl→hdl, genlib→lib. 2018-12-15 14:25:31 +00:00
Renamed from nmigen/genlib/io.py (Browse further)