humpback-dds/nmigen/fpga_config.py

# If the design does not create a "sync" clock domain, it is created by the nMigen build system
# using the platform default clock (and default reset, if any).

from nmigen import *
from humpback import *


#class SimpleBlinky(Elaboratable):
#	def elaborate(self, platform):
#		led = platform.request("user_led", 0)
#		counter = Signal(24)
#		m = Module()
#		m.d.sync += counter.eq(counter + 1)
#		m.d.comb += led.o.eq(counter[23])
#		return m


# Simple connector from STM32 SPI to Humpback SPI
class UrukulConnector(Elaboratable):
	def elaborate(self, platform):
		# Acquire SPI slave, EEM port 1 output
		spi = platform.request("spi")
		print(spi)
		eem = platform.request("eem", 1)
		print(eem)
		clk25 = platform.request("clk25")
		counter = Signal(25)

		m = Module()
		m.domains.sync = ClockDomain()
		m.d.comb += ClockSignal().eq(clk25.i)
		m.d.sync += counter.eq(counter + 1)
		return m




if __name__ == "__main__":
	platform = HumpbackPlatform()
	platform.add_resources(platform.eem_to_urukul)
	platform.add_resources(platform.spi)
	platform.build(UrukulConnector(), do_program=False)