diff options
| -rw-r--r-- | amaranth_boards/tang_nano.py | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/amaranth_boards/tang_nano.py b/amaranth_boards/tang_nano.py new file mode 100644 index 0000000..f604b51 --- /dev/null +++ b/amaranth_boards/tang_nano.py @@ -0,0 +1,63 @@ +import subprocess +from amaranth.vendor.gowin import GowinPlatform +from amaranth.build import * +from .resources import * + + +class TangNanoPlatform(GowinPlatform): + part = "GW1N-LV1QN48C6/I5" + family = "GW1N-1" + default_clk = "OSC" + osc_frequency = 24_000_000 + resources = [ + # This clock is shared with the USB-JTAG MCU and stops when the USB bus is suspended. + # It probably should not be used, but is included for completeness. + Resource("clk24", 0, Pins("35", dir="i"), Clock(24_000_000), + Attrs(IO_TYPE="LVCMOS33")), + + RGBLEDResource(0, r="18", g="16", b="17", + attrs=Attrs(IO_TYPE="LVCMOS33")), + + *ButtonResources(pins="15 14", invert=True, + attrs=Attrs(IO_TYPE="LVCMOS33")), + + UARTResource(0, tx="9", rx="8", + attrs=Attrs(IO_TYPE="LVCMOS33", PULL_MODE="UP")), + + *SPIFlashResources(0, + cs_n="19", clk="20", copi="22", cipo="23", wp_n="24", hold_n="25", + attrs=Attrs(IO_TYPE="LVCMOS33")), + + Resource("lcd", 0, + Subsignal("clk", Pins("11", dir="o")), + Subsignal("hs", Pins("10", dir="o")), + Subsignal("vs", Pins("46", dir="o")), + Subsignal("de", Pins("5", dir="o")), + Subsignal("r", Pins("27 28 29 30 31", dir="o")), + Subsignal("g", Pins("32 33 34 38 39 40", dir="o")), + Subsignal("b", Pins("41 42 43 44 45", dir="o")), + Attrs(IO_TYPE="LVCMOS33")), + + Resource("lcd_backlight", 0, Pins("47", dir="o"), + Attrs(IO_TYPE="LVCMOS33")), + ] + connectors = [] + + def toolchain_prepare(self, fragment, name, **kwargs): + overrides = { + "add_options": + "set_option -use_mspi_as_gpio 1 -use_sspi_as_gpio 1", + "gowin_pack_opts": + "--sspi_as_gpio --mspi_as_gpio" + } + return super().toolchain_prepare(fragment, name, **overrides, **kwargs) + + def toolchain_program(self, products, name): + with products.extract("{}.fs".format(name)) as bitstream_filename: + subprocess.check_call(["openFPGALoader", "-b", "tangnano", + bitstream_filename]) + + +if __name__ == "__main__": + from .test.blinky import * + TangNanoPlatform().build(Blinky(), do_program=True) |