forked from M-Labs/humpback-dds
humpback: added connectors
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@ -9,7 +9,6 @@ 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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from pin_mapper import *
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__all__ = ["HumpbackPlatform"]
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@ -18,10 +17,8 @@ __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" # Point of deviation: Clock speed for humpback is fixed at 25MHz
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default_clk = "clk25"
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# Acquire GPIO mappings from gpio_mapper
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gpio_dict, global_gpio_dict = GPIOMapping()
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resources = [
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# Define clock
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@ -34,12 +31,7 @@ class HumpbackPlatform(LatticeICE40Platform):
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Attrs(IO_STANDARD="SB_LVCMOS")
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),
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# Serial interfaces: Only including pins usable to STM32
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# Define UART interfaces
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# UART interface: There are no pull ups from humpback.
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# Need to configure STM32 pins to pull up.
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# Note: Use USART in asynchronous mode
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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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@ -62,33 +54,136 @@ class HumpbackPlatform(LatticeICE40Platform):
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),
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# Define I2C interface
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# Note: Need to program pull up in stm32
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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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# TODO:STM32 GPIO pins, ignore other unusable pins as well
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*GPIOResources(
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pins_dict = gpio_dict, dir = "o",
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attrs=Attrs(IO_STANDARD="SB_LVCMOS"),
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),
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*GPIOResources(
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pins_dict = global_gpio_dict, dir = "o",
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attrs=Attrs(GLOBAL=True, IO_STANDARD="SB_LVCMOS"),
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),
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]
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connectors = []
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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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# TODO: this should be factored out and made customizable
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subprocess.check_call([iceprog, "-S", bitstream_filename])
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if __name__ == "__main__":
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@ -96,17 +191,3 @@ if __name__ == "__main__":
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HumpbackPlatform().build(Blinky(), do_program=False)
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