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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/>.
#
"""
Mboard implementation base class
"""
import re
import os
from . import lib
from . import types
from . import dboard_manager
class periph_manager(object):
# stores discovered device information in dicts
dboards = {}
mboard_if_addrs = {}
mboard_overlays = {}
# this information has to be provided by
# the specific periph_manager implementation
mboard_eeprom_addr = ""
dboard_eeprom_addrs = {}
dboard_spimaster_addrs = {}
def __init__(self):
# I know my EEPROM address, lets use it
helper = lib.udev_helper.udev_helper()
(self._eeprom_head, self._eeprom_rawdata) = types.eeprom().read_eeprom(helper.get_eeprom(self.mboard_eeprom_addr))
self._dboard_eeproms = {}
for dboard_slot, eeprom_addr in self.dboard_eeprom_addrs.iteritems():
spi_devices = []
# I know EEPROM adresses for my dboard slots
eeprom_data = types.eeprom().read(helper.get_eeprom(eeprom_addr))
# I know spidev masters on the dboard slots
hw_pid = eeprom_data.get("hw_pid", 0)
if hw_pid in dboards.hw_pids:
spi_devices = helper.get_spidev_nodes(self.dboard_spimaster_addrs.get(dboard_slot))
dboard = dboards.hw_pids.get(hw_pid, dboards.unknown)
self.dboards.update({dboard_slot: dboard(spi_devices, eeprom_data)})
def get_overlays(self):
self.mboard_overlays = []
for f in os.listdir("/lib/firmware/"):
if f.endswith(".dtbo"):
self.mboard_overlays.append(f.strip(".dtbo"))
def check_overlay(self):
for f in os.listdir("/sys/kernel/device-tree/overlays/"):
pass #do stuff
def get_serial(self):
return self._serial
def load_fpga_image(self, target=None):
pass
def init_device(self, *args, **kwargs):
# Load FPGA
# Init dboards
pass
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