194 lines
4.2 KiB
Python
194 lines
4.2 KiB
Python
# Strongly inspired by the migen build of humpback
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# Using STM32 Nucleo-H743ZI2 board
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# Note to self: Pin assignment differs from Nucleo-H743ZI
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import os
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import subprocess
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from nmigen.build import *
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from nmigen.vendor.lattice_ice40 import *
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from nmigen_boards.resources import *
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from resources import *
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__all__ = ["HumpbackPlatform"]
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class HumpbackPlatform(LatticeICE40Platform):
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device = "iCE40HX8K" # Using ICE40HX8K-CT256
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package = "CT256"
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default_clk = "clk25"
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resources = [
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# Define clock
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Resource("clk25", 0, Pins("K9", dir="i"),
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Clock(25e6), Attrs(GLOBAL=True, IO_STANDARD="SB_LVCMOS")
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),
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# Define user LED
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Resource("user_led", 0, Pins("H3", dir="o"),
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Attrs(IO_STANDARD="SB_LVCMOS")
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),
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# Define UART interfaces
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UARTResource(0,
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rx="T11", tx="M13", rts="M15", cts="T10",
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attrs=Attrs(IO_STANDARD="SB_LVCMOS", PULLUP=1)
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),
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# UART1 interface: Read note for UART interface above
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# UART1 interface is broken due to pin rearrangement introduced for Nucleo-H743ZI2
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# Uncomment if fixed, or found an alternative (e.g. bit banging UART)
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# *UARTResource(1,
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# tx="M11", rx="T13", rts="A6", cts="B16",
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# attrs=Attrs(IO_STANDARD="SB_LVCMOS", PULLUP=1)
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# ),
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# Define SPI interfaces
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# Note: Use "role=device" to make humpback a SPI slave
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# The ~CS pin is a global pin, but not being configured global.
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SPIResource(0,
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cs="R2", clk="C8", mosi="N5", miso="T2",
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attrs=Attrs(IO_STANDARD="SB_LVCMOS")
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),
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# Define I2C interface
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# Use "role=device" to make humpback a I2C slave
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I2CResource(0,
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sda="T16", scl="M12",
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attrs=Attrs(IO_STANDARD="SB_LVCMOS", PULLUP=1)
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),
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]
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# Using the dict approach in (o)migen
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# Note: Numbering is required in nMigen, so some probably meaningful strings/integers are inserted
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connectors = [
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# EEM0 Connection Interface
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Connector("eem", 0, {
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"d0_cc_n": "H1",
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"d0_cc_p": "J3",
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"d1_n" : "B1",
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"d1_p" : "F5",
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"d2_n" : "C2",
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"d2_p" : "C1",
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"d3_n" : "D2",
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"d3_p" : "F4",
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"d4_n" : "D1",
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"d4_p" : "G5",
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"d5_n" : "E3",
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"d5_p" : "G4",
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"d6_n" : "E2",
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"d6_p" : "H5",
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"d7_n" : "F3",
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"d7_p" : "G3",
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}),
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# EEM1 Connection Interface
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Connector("eem", 1,
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"d0_cc_n": "L3",
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"d0_cc_p": "L6",
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"d1_n": "F1",
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"d1_p": "H6",
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"d2_n": "G2",
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"d2_p": "H4",
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"d3_n": "H2",
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"d3_p": "J4",
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"d4_n": "J1",
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"d4_p": "J2",
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"d5_n": "K3",
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"d5_p": "K1",
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"d6_n": "L1",
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"d6_p": "L4",
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"d7_n": "M1",
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"d7_p": "K4",
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}),
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# EEM2 Connection Interface
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Connector("eem", 2,
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"d0_cc_n": "G1",
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"d0_cc_p": "J5",
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"d1_n": "M2",
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"d1_p": "K5",
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"d2_n": "N2",
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"d2_p": "L7",
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"d3_n": "M3",
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"d3_p": "M6",
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"d4_n": "N3",
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"d4_p": "L5",
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"d5_n": "M4",
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"d5_p": "P1",
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"d6_n": "M5",
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"d6_p": "P2",
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"d7_n": "N4",
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"d7_p": "R1",
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}),
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# STM32 Connection Pins
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Connector("stm32", "GPIO", {
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"PA0": "A2",
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"PA1": "P14",
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"PA2": "B8",
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"PA3": "L13",
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"PA7": "N12",
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"PA8": "M9",
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"PA9": "P10",
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"PA10": "R10",
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"PA15": "B14",
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"PB0": "A1",
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"PB1": "G12",
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"PB2": "B6",
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"PB6": "A7",
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"PB10": "C3",
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"PB11": "F7",
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"PB12": "B13",
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"PB13": "B12",
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"PB15": "A11",
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"PC0": "L14",
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"PC1": "M14",
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"PC2": "A9",
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"PC3": "M16",
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"PC4": "N16",
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"PC5": "P16",
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"PC6": "B10",
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"PC7": "B15",
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"PC8": "H16",
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"PC9": "J10",
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"PC10": "J16",
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"PC11": "J15",
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"PC12": "K12",
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"PD0": "T9",
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"PD1": "N9",
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"PD2": "K13",
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"PD7": "L12",
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"PD11": "E5",
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"PD12": "D5",
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"PD13": "C5",
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"PF7": "L9",
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"PF8": "L10",
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"PF9": "P9",
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"PF14": "B9",
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"PG0": "M7",
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"PG1": "P8",
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"PG2": "K14",
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"PG3": "K15",
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}),
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]
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# tool chain setup, using default ICE40 HX8K evaluation code
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def toolchain_program(self, products, name):
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iceprog = os.environ.get("ICEPROG", "iceprog")
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with products.extract("{}.bin".format(name)) as bitstream_filename:
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subprocess.check_call([iceprog, "-S", bitstream_filename])
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if __name__ == "__main__":
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from nmigen_boards.test.blinky import *
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HumpbackPlatform().build(Blinky(), do_program=False)
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