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#
# Copyright 2017 Ettus Research (National Instruments)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
"""
magnesium dboard implementation module
"""
from . import lib
from .base import DboardManagerBase
import struct
from logging import getLogger
LOG = getLogger(__name__)
class magnesium(DboardManagerBase):
"""
Holds all dboard specific information and methods of the magnesium dboard
"""
hw_pid = 2
special_eeprom_addrs = {"special0": "something"}
spi_chipselect = {"0": "lmk", "1": "mykonos", "2": "random"}
spidevs = {}
lmk = ""
mykonos = ""
random = ""
def __init__(self, spi_devices, eeprom_data, *args, **kwargs):
# eeprom_data is a tuple (head_dict, raw_data)
if len(spi_devices) != len(self.spi_chipselect):
LOG.error("Expected {0} spi devices, found {1} spi devices".format(len(spi_devices), len(self.spi_chipselect)))
exit(1)
for spi in spi_devices:
device = self.spi_chipselect.get(spi[-1], None)
if self.chipselect is None:
LOG.error("Unexpected chipselect {0}".format(spi[-1]))
exit(1)
setattr(self, device, spi)
super(magnesium, self).__init__(*args, **kwargs)
def init_device(self):
"""
Execute necessary init dance to bring up dboard
"""
LOG.debug("initialize hardware")
self._device = lib.dboards.magnesium(
self.lmk, self.mykonos, self.random)
def read_eeprom_v1(self, data):
"""
read eeprom data version 1
"""
# magnesium eeprom contains
# nothing
return struct.unpack_from("x", data)
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