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Add SPI to ebaz4205 gateware

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newell 2024-10-16 23:34:57 -07:00
parent 030247be18
commit 96b4ecfb73
1 changed files with 24 additions and 11 deletions
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35
src/gateware/ebaz4205.py
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@ -1,23 +1,19 @@
#!/usr/bin/env python #!/usr/bin/env python
import argparse import argparse
from operator import itemgetter
import analyzer
import dma
from artiq.gateware import rtio
from artiq.gateware.rtio.phy import dds, spi2, ttl_simple
from artiq.gateware.rtio.xilinx_clocking import fix_serdes_timing_path
from config import write_csr_file, write_mem_file, write_rustc_cfg_file
from migen import * from migen import *
from migen.build.generic_platform import IOStandard, Misc, Pins, Subsignal
from migen.build.platforms import ebaz4205 from migen.build.platforms import ebaz4205
from migen.build.generic_platform import Pins, Subsignal, IOStandard, Misc
from migen_axi.integration.soc_core import SoCCore from migen_axi.integration.soc_core import SoCCore
from misoc.interconnect.csr import * from misoc.interconnect.csr import *
from artiq.gateware import rtio
from artiq.gateware.rtio.phy import ttl_simple
from artiq.gateware.rtio.xilinx_clocking import fix_serdes_timing_path
import dma
import analyzer
from config import write_csr_file, write_mem_file, write_rustc_cfg_file
_ps = [ _ps = [
( (
"ps", "ps",
@ -83,6 +79,17 @@ _i2c = [
) )
] ]
_pmod_spi = [
(
"pmod_spi",
0,
Subsignal("clk", Pins("V20")),
Subsignal("mosi", Pins("U20")),
Subsignal("cs_n", Pins("P19")),
IOStandard("LVCMOS33"),
)
]
class EBAZ4205(SoCCore): class EBAZ4205(SoCCore):
def __init__(self, rtio_clk=125e6, acpki=False): def __init__(self, rtio_clk=125e6, acpki=False):
@ -97,6 +104,7 @@ class EBAZ4205(SoCCore):
platform.add_extension(_ps) platform.add_extension(_ps)
platform.add_extension(_ddr) platform.add_extension(_ddr)
platform.add_extension(_i2c) platform.add_extension(_i2c)
platform.add_extension(_pmod_spi)
gmii = platform.request("gmii") gmii = platform.request("gmii")
platform.add_period_constraint(gmii.rx_clk, 10) platform.add_period_constraint(gmii.rx_clk, 10)
@ -171,6 +179,11 @@ class EBAZ4205(SoCCore):
phy = ttl_simple.Output(user_led) phy = ttl_simple.Output(user_led)
self.submodules += phy self.submodules += phy
self.rtio_channels.append(rtio.Channel.from_phy(phy)) self.rtio_channels.append(rtio.Channel.from_phy(phy))
print("SPI at RTIO channel 0x{:06x}".format(len(self.rtio_channels)))
spi_phy = spi2.SPIMaster(platform.request("pmod_spi"))
self.submodules += spi_phy
self.rtio_channels.append(rtio.Channel.from_phy(spi_phy, ififo_depth=4))
self.config["RTIO_LOG_CHANNEL"] = len(self.rtio_channels) self.config["RTIO_LOG_CHANNEL"] = len(self.rtio_channels)
self.rtio_channels.append(rtio.LogChannel()) self.rtio_channels.append(rtio.LogChannel())