From c7c637043817eae6f48c33b707b40c9c1b20f199 Mon Sep 17 00:00:00 2001 From: whitequark Date: Thu, 3 Oct 2019 05:54:12 +0000 Subject: Reorganize resource taxonomy. The current hierarchy isn't particularly well suited to resources like SDRAM or NOR flash, so make it much less fine-grained but easier to use and less nitpicky. --- nmigen_boards/resources/user.py | 43 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 nmigen_boards/resources/user.py (limited to 'nmigen_boards/resources/user.py') diff --git a/nmigen_boards/resources/user.py b/nmigen_boards/resources/user.py new file mode 100644 index 0000000..8faa736 --- /dev/null +++ b/nmigen_boards/resources/user.py @@ -0,0 +1,43 @@ +from nmigen.build import * + + +__all__ = ["LEDResources", "RGBLEDResource", "ButtonResources", "SwitchResources"] + + +def _SplitResources(*args, pins, invert=False, attrs=None, default_name, dir): + assert isinstance(pins, (str, list, dict)) + + if isinstance(pins, str): + pins = pins.split() + if isinstance(pins, list): + pins = dict(enumerate(pins)) + + resources = [] + for number, pin in pins.items(): + ios = [Pins(pin, dir=dir, invert=invert)] + if attrs is not None: + ios.append(attrs) + resources.append(Resource.family(*args, number, default_name=default_name, ios=ios)) + return resources + + +def LEDResources(*args, **kwargs): + return _SplitResources(*args, **kwargs, default_name="led", dir="o") + + +def RGBLEDResource(*args, r, g, b, invert=False, attrs=None): + ios = [] + ios.append(Subsignal("r", Pins(r, dir="o", invert=invert, assert_width=1))) + ios.append(Subsignal("g", Pins(g, dir="o", invert=invert, assert_width=1))) + ios.append(Subsignal("b", Pins(b, dir="o", invert=invert, assert_width=1))) + if attrs is not None: + ios.append(attrs) + return Resource.family(*args, default_name="rgb_led", ios=ios) + + +def ButtonResources(*args, **kwargs): + return _SplitResources(*args, **kwargs, default_name="button", dir="i") + + +def SwitchResources(*args, **kwargs): + return _SplitResources(*args, **kwargs, default_name="switch", dir="i") -- cgit v1.2.3