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gateware: fix VADJ I/O standard conflict

This commit is contained in:
Sebastien Bourdeauducq 2020-07-16 17:58:31 +08:00
parent 6a361893c2
commit f69e41af5e
1 changed files with 15 additions and 2 deletions
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17
src/gateware/zc706.py
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@ -3,6 +3,7 @@
import argparse
from migen import *
from migen.build.generic_platform import *
from migen.genlib.resetsync import AsyncResetSynchronizer
from migen.genlib.cdc import MultiReg
from migen_axi.integration.soc_core import SoCCore
@ -115,6 +116,16 @@ class Simple(ZC706):
self.add_rtio(rtio_channels)
# The NIST backplanes require setting VADJ to 3.3V by reprogramming the power supply.
# This also changes the I/O standard for some on-board LEDs.
leds_fmc33 = [
("user_led_33", 0, Pins("Y21"), IOStandard("LVCMOS33")),
("user_led_33", 1, Pins("G2"), IOStandard("LVCMOS15")),
("user_led_33", 2, Pins("W21"), IOStandard("LVCMOS33")),
("user_led_33", 3, Pins("A17"), IOStandard("LVCMOS15")),
]
class NIST_CLOCK(ZC706):
"""
NIST clock hardware, with old backplane and 11 DDS channels
@ -124,11 +135,12 @@ class NIST_CLOCK(ZC706):
platform = self.platform
platform.add_extension(nist_clock.fmc_adapter_io)
platform.add_extension(leds_fmc33)
rtio_channels = []
for i in range(4):
phy = ttl_simple.Output(platform.request("user_led", i))
phy = ttl_simple.Output(platform.request("user_led_33", i))
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy))
@ -174,11 +186,12 @@ class NIST_QC2(ZC706):
platform = self.platform
platform.add_extension(nist_qc2.fmc_adapter_io)
platform.add_extension(leds_fmc33)
rtio_channels = []
for i in range(4):
phy = ttl_simple.Output(platform.request("user_led", i))
phy = ttl_simple.Output(platform.request("user_led_33", i))
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy))