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#
# Copyright 2018 Ettus Research, a National Instruments Company
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
"""
Gain table control for Rhodium
"""
from __future__ import print_function
from usrp_mpm.dboard_manager.gaintables_rh import RX_LOWBAND_GAIN_TABLE
from usrp_mpm.dboard_manager.gaintables_rh import RX_HIGHBAND_GAIN_TABLE
from usrp_mpm.dboard_manager.gaintables_rh import TX_LOWBAND_GAIN_TABLE
from usrp_mpm.dboard_manager.gaintables_rh import TX_HIGHBAND_GAIN_TABLE
#from usrp_mpm.dboard_manager.rhodium import Rhodium
###############################################################################
# Constants
###############################################################################
GAIN_TABLE_MIN_INDEX = 0
GAIN_TABLE_MAX_INDEX = 60
DSA1_MIN_INDEX = 0
DSA1_MAX_INDEX = 30
DSA2_MIN_INDEX = 0
DSA2_MAX_INDEX = 30
GAIN_TBL_SEL_ADDR = 6
GAIN_TBL_SEL_TX_SHIFT = 8
GAIN_TBL_SEL_RX_SHIFT = 0
GAIN_TBL_SEL_HIGH_BAND = 1
GAIN_TBL_SEL_LOW_BAND = 0
# convenience data values for GAIN_TBL_SEL
GAIN_TBL_SEL_DATA_BOTH_HIGH = \
(GAIN_TBL_SEL_HIGH_BAND << GAIN_TBL_SEL_TX_SHIFT) | \
(GAIN_TBL_SEL_HIGH_BAND << GAIN_TBL_SEL_RX_SHIFT)
GAIN_TBL_SEL_DATA_BOTH_LOW = \
(GAIN_TBL_SEL_LOW_BAND << GAIN_TBL_SEL_TX_SHIFT) | \
(GAIN_TBL_SEL_LOW_BAND << GAIN_TBL_SEL_RX_SHIFT)
###############################################################################
# Main class
###############################################################################
class GainTableRh():
"""
CPLD gain table loader for Rhodium daughterboards
"""
def __init__(self, cpld_regs, gain_tbl_regs, parent_log=None):
self.log = parent_log.getChild("CPLDGainTbl") if parent_log is not None \
else get_logger("CPLDGainTbl")
self.cpld_regs = cpld_regs
self.gain_tbl_regs = gain_tbl_regs
assert hasattr(self.cpld_regs, 'poke16')
assert hasattr(self.gain_tbl_regs, 'poke16')
def _load_default_table(self, table, gain_table):
def _create_spi_loader_message(table, index, dsa1, dsa2):
addr = 0
data = 0
if table == "rx":
tableindex = 1
elif table == "tx":
tableindex = 2
else:
raise RuntimeError("Invalid table selected in gain loader: " + table)
addr |= (tableindex << 6)
addr |= (index << 0)
data |= (dsa1 << 5)
data |= (dsa2 << 0)
return addr, data
for i in range(GAIN_TABLE_MIN_INDEX, GAIN_TABLE_MAX_INDEX):
addr, data = _create_spi_loader_message(
table,
i,
gain_table[i][0],
gain_table[i][1])
self.gain_tbl_regs.poke16(addr, data)
def init(self):
"""
Loads the default gain table values to the CPLD via SPI
"""
self.log.trace("Loading gain tables to CPLD")
self.cpld_regs.poke16(GAIN_TBL_SEL_ADDR, GAIN_TBL_SEL_DATA_BOTH_HIGH)
self._load_default_table("rx", RX_HIGHBAND_GAIN_TABLE)
self._load_default_table("tx", TX_HIGHBAND_GAIN_TABLE)
self.cpld_regs.poke16(GAIN_TBL_SEL_ADDR, GAIN_TBL_SEL_DATA_BOTH_LOW)
self._load_default_table("rx", RX_LOWBAND_GAIN_TABLE)
self._load_default_table("tx", TX_LOWBAND_GAIN_TABLE)
self.log.trace("Gain tables loaded")
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