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gateware.kc705: make xadc/ams an extension header

This commit is contained in:
Robert Jördens 2016-02-28 22:41:17 +01:00
parent 312e09150e
commit d5893d15fb
1 changed files with 18 additions and 8 deletions
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26
artiq/gateware/targets/kc705.py
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@ -80,6 +80,18 @@ class _RTIOCRG(Module, AutoCSR):
]
_ams101_dac = [
("ams101_dac", 0,
Subsignal("ldac", Pins("XADC:GPIO0")),
Subsignal("clk", Pins("XADC:GPIO1")),
Subsignal("mosi", Pins("XADC:GPIO2")),
Subsignal("cs_n", Pins("XADC:GPIO3")),
IOStandard("LVTTL")
)
]
class _NIST_Ions(MiniSoC, AMPSoC):
csr_map = {
"rtio": None, # mapped on Wishbone instead
@ -115,6 +127,8 @@ class _NIST_Ions(MiniSoC, AMPSoC):
self.platform.request("user_led", 0),
self.platform.request("user_led", 1)))
self.platform.add_extension(_ams101_dac)
def add_rtio(self, rtio_channels):
self.submodules.rtio_crg = _RTIOCRG(self.platform, self.crg.cd_sys.clk)
self.submodules.rtio = rtio.RTIO(rtio_channels)
@ -237,19 +251,15 @@ class NIST_CLOCK(_NIST_Ions):
rtio_channels.append(rtio.Channel.from_phy(phy))
self.config["RTIO_REGULAR_TTL_COUNT"] = len(rtio_channels)
self.config["RTIO_SPI_LDAC_CHANNEL"] = len(rtio_channels)
ldac_n = self.platform.request("xadc_gpio", 0)
phy = ttl_simple.Output(ldac_n)
spi_pins = self.platform.request("ams101_dac", 0)
phy = ttl_simple.Output(spi_pins.ldac)
self.submodules += phy
self.config["RTIO_SPI_LDAC_CHANNEL"] = len(rtio_channels)
rtio_channels.append(rtio.Channel.from_phy(phy))
self.config["RTIO_SPI_CHANNEL"] = len(rtio_channels)
spi_pins = Module()
spi_pins.clk = self.platform.request("xadc_gpio", 1)
spi_pins.mosi = self.platform.request("xadc_gpio", 2)
spi_pins.cs_n = self.platform.request("xadc_gpio", 3)
phy = spi.SPIMaster(spi_pins)
self.submodules += phy
self.config["RTIO_SPI_CHANNEL"] = len(rtio_channels)
rtio_channels.append(rtio.Channel.from_phy(
phy, ofifo_depth=4, ififo_depth=4))