7a988bee22
Ex of use in a SoC that issues a DHCP request per second:
from liteeth.core.dhcp import LiteEthDHCP
from migen.genlib.misc import WaitTimer
# Signals.
ip_address = Signal(32)
mac_address = Signal(48, reset=0x10e2d5000001)
# Request Timer.
self.dhcp_timer = dhcp_timer = WaitTimer(int(sys_clk_freq/2))
self.comb += self.dhcp_timer.wait.eq(~self.dhcp_timer.done)
# DHCP.
dhcp_port = self.ethcore_etherbone.udp.crossbar.get_port(68, dw=32, cd="sys")
self.dhcp = dhcp = LiteEthDHCP(udp_port=dhcp_port, sys_clk_freq=sys_clk_freq)
self.comb += [
dhcp.start.eq(self.dhcp_timer.done),
dhcp.mac_address.eq(mac_address),
]
self.sync += [
If(dhcp.done,
ip_address.eq(dhcp.offered_ip_address)
)
]
|
||
|---|---|---|
| .. | ||
| core | ||
| frontend | ||
| mac | ||
| phy | ||
| software | ||
| __init__.py | ||
| common.py | ||
| crossbar.py | ||
| gen.py | ||
| packet.py | ||