mirror of
https://github.com/saymrwulf/uhd.git
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44 lines
1.6 KiB
Python
44 lines
1.6 KiB
Python
#
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# Copyright 2017 Ettus Research (National Instruments)
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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import pyudev
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import os
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from ..mpmlog import get_logger
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def get_eeprom_path(address):
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"""
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Return EEPROM device path for a given I2C address
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"""
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context = pyudev.Context()
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parent = pyudev.Device.from_name(context, "platform", address)
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paths = [device.device_node if device.device_node is not None else device.sys_path
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for device in context.list_devices(parent=parent, subsystem="nvmem")]
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if len(paths) != 1:
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raise Exception("{0} paths to EEPROM found!".format(len(paths)))
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return paths[0] + "/nvmem"
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def get_spidev_nodes(spi_master):
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"""
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Return found spidev device paths for a given SPI master
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"""
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context = pyudev.Context()
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parent = pyudev.Device.from_name(context, "platform", spi_master)
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paths = [device.device_node.encode('ascii')
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for device in context.list_devices(parent=parent, subsystem="spidev")]
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return paths
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