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/dev/flash.py | 38 -------------------------------------- 1 file changed, 38 deletions(-) delete mode 100644 nmigen_boards/dev/flash.py (limited to 'nmigen_boards/dev/flash.py') diff --git a/nmigen_boards/dev/flash.py b/nmigen_boards/dev/flash.py deleted file mode 100644 index 817b6d4..0000000 --- a/nmigen_boards/dev/flash.py +++ /dev/null @@ -1,38 +0,0 @@ -from nmigen.build import * - - -__all__ = ["SPIFlashResources"] - - -def SPIFlashResources(*args, cs, clk, mosi, miso, wp=None, hold=None, attrs=None): - resources = [] - - io_all = [] - if attrs is not None: - io_all.append(attrs) - io_all.append(Subsignal("cs", PinsN(cs, dir="o"))) - io_all.append(Subsignal("clk", Pins(clk, dir="o", assert_width=1))) - - io_1x = list(io_all) - io_1x.append(Subsignal("mosi", Pins(mosi, dir="o", assert_width=1))) - io_1x.append(Subsignal("miso", Pins(miso, dir="i", assert_width=1))) - if wp is not None and hold is not None: - io_1x.append(Subsignal("wp", PinsN(wp, dir="o", assert_width=1))) - io_1x.append(Subsignal("hold", PinsN(hold, dir="o", assert_width=1))) - resources.append(Resource.family(*args, default_name="spi_flash", ios=io_1x, - name_suffix="1x")) - - io_2x = list(io_all) - io_2x.append(Subsignal("dq", Pins(" ".join([mosi, miso]), dir="io", - assert_width=2))) - resources.append(Resource.family(*args, default_name="spi_flash", ios=io_2x, - name_suffix="2x")) - - if wp is not None and hold is not None: - io_4x = list(io_all) - io_4x.append(Subsignal("dq", Pins(" ".join([mosi, miso, wp, hold]), dir="io", - assert_width=4))) - resources.append(Resource.family(*args, default_name="spi_flash", ios=io_4x, - name_suffix="4x")) - - return resources -- cgit v1.2.3