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https://github.com/saymrwulf/uhd.git
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d87ae61d04
Co-authored-by: Humberto Jimenez <humberto.jimenez@ni.com> Co-authored-by: Alex Williams <alex.williams@ni.com> Co-authored-by: Derek Kozel <derek.kozel@ni.com>
93 lines
3.3 KiB
Python
93 lines
3.3 KiB
Python
#
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# Copyright 2018 Ettus Research, a National Instruments Company
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#
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# SPDX-License-Identifier: GPL-3.0-or-later
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#
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"""
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Gain table control for Rhodium
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"""
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from __future__ import print_function
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from usrp_mpm.dboard_manager.gaintables_rh import RX_LOWBAND_GAIN_TABLE
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from usrp_mpm.dboard_manager.gaintables_rh import RX_HIGHBAND_GAIN_TABLE
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from usrp_mpm.dboard_manager.gaintables_rh import TX_LOWBAND_GAIN_TABLE
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from usrp_mpm.dboard_manager.gaintables_rh import TX_HIGHBAND_GAIN_TABLE
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#from usrp_mpm.dboard_manager.rhodium import Rhodium
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###############################################################################
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# Constants
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###############################################################################
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GAIN_TABLE_MIN_INDEX = 0
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GAIN_TABLE_MAX_INDEX = 60
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DSA1_MIN_INDEX = 0
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DSA1_MAX_INDEX = 30
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DSA2_MIN_INDEX = 0
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DSA2_MAX_INDEX = 30
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GAIN_TBL_SEL_ADDR = 6
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GAIN_TBL_SEL_TX_SHIFT = 8
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GAIN_TBL_SEL_RX_SHIFT = 0
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GAIN_TBL_SEL_HIGH_BAND = 1
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GAIN_TBL_SEL_LOW_BAND = 0
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# convenience data values for GAIN_TBL_SEL
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GAIN_TBL_SEL_DATA_BOTH_HIGH = \
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(GAIN_TBL_SEL_HIGH_BAND << GAIN_TBL_SEL_TX_SHIFT) | \
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(GAIN_TBL_SEL_HIGH_BAND << GAIN_TBL_SEL_RX_SHIFT)
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GAIN_TBL_SEL_DATA_BOTH_LOW = \
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(GAIN_TBL_SEL_LOW_BAND << GAIN_TBL_SEL_TX_SHIFT) | \
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(GAIN_TBL_SEL_LOW_BAND << GAIN_TBL_SEL_RX_SHIFT)
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###############################################################################
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# Main class
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###############################################################################
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class GainTableRh():
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"""
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CPLD gain table loader for Rhodium daughterboards
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"""
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def __init__(self, cpld_regs, gain_tbl_regs, parent_log=None):
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self.log = parent_log.getChild("CPLDGainTbl") if parent_log is not None \
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else get_logger("CPLDGainTbl")
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self.cpld_regs = cpld_regs
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self.gain_tbl_regs = gain_tbl_regs
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assert hasattr(self.cpld_regs, 'poke16')
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assert hasattr(self.gain_tbl_regs, 'poke16')
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def _load_default_table(self, table, gain_table):
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def _create_spi_loader_message(table, index, dsa1, dsa2):
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addr = 0
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data = 0
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if table == "rx":
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tableindex = 1
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elif table == "tx":
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tableindex = 2
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else:
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raise RuntimeError("Invalid table selected in gain loader: " + table)
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addr |= (tableindex << 6)
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addr |= (index << 0)
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data |= (dsa1 << 5)
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data |= (dsa2 << 0)
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return addr, data
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for i in range(GAIN_TABLE_MIN_INDEX, GAIN_TABLE_MAX_INDEX):
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addr, data = _create_spi_loader_message(
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table,
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i,
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gain_table[i][0],
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gain_table[i][1])
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self.gain_tbl_regs.poke16(addr, data)
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def init(self):
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"""
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Loads the default gain table values to the CPLD via SPI
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"""
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self.log.trace("Loading gain tables to CPLD")
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self.cpld_regs.poke16(GAIN_TBL_SEL_ADDR, GAIN_TBL_SEL_DATA_BOTH_HIGH)
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self._load_default_table("rx", RX_HIGHBAND_GAIN_TABLE)
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self._load_default_table("tx", TX_HIGHBAND_GAIN_TABLE)
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self.cpld_regs.poke16(GAIN_TBL_SEL_ADDR, GAIN_TBL_SEL_DATA_BOTH_LOW)
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self._load_default_table("rx", RX_LOWBAND_GAIN_TABLE)
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self._load_default_table("tx", TX_LOWBAND_GAIN_TABLE)
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self.log.trace("Gain tables loaded")
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