58 lines
1.5 KiB
Python
58 lines
1.5 KiB
Python
import os.path
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try:
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from sonic_psu.psu_base import PsuBase
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except ImportError as e:
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raise ImportError (str(e) + "- required module not found")
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class PsuUtil(PsuBase):
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"""Platform-specific PSUutil class"""
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def __init__(self):
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PsuBase.__init__(self)
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self.psu_path = "/sys/bus/i2c/devices/{}-0058/"
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self.psu_oper_status = "in1_input"
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self.psu_presence = "i2cget -y {} 0x50 0x00"
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def get_num_psus(self):
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"""
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Retrieves the number of PSUs available on the device
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:return: An integer, the number of PSUs available on the device
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"""
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return 2
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def get_psu_status(self, index):
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if index is None:
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return False
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Base_bus_number = 39
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status = 0
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#index from 1, psu attribute bus from 40
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try:
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with open(self.psu_path.format(index + Base_bus_number) + self.psu_oper_status, 'r') as power_status:
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if int(power_status.read()) == 0 :
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return False
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else:
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status = 1
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except IOError:
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return False
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return status == 1
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def get_psu_presence(self, index):
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if index is None:
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return False
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Base_bus_number = 39
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status = 0
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try:
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p = os.popen(self.psu_presence.format(index + Base_bus_number)+ "> /dev/null 2>&1")
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if p.readline() != None:
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status = 1
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p.close()
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except IOError:
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return False
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return status == 1
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