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CFBMC-1667: Storage system prematurely reports coin cell battery LNC and LCR threshold errors

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hw
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Issue

  • Event
    monitor.rtcHighPower
    and
    monitor.rtcNormal
    are reported in EMS log
    [NODE-02: env_mgr: monitor.rtcHighPower:error]: Real-time clock battery voltage is above normal (P3.3V Batt is warning high (3307 mV).).
    [NODE-02: env_mgr: monitor.rtcNormal:notice]: Real-time clock battery voltage is normal


  • P3V3_BATT: Voltage Sensor 26 UNC
    is shown in
    system controller service-event show
    ::*> system controller service-event show
    Node ID Event Location Event Description
    ---------------- --- ---------------------------------- ----------------------
    NODE-02 1 Controller B on Chassis 1 P3V3_BATT: Voltage Sensor 26 UNC


  • P3V3_BATT
    Status shows
    nc
    in
    bmc status -d

ipmi_sensors
============
Sensor Name | Current | Unit | Status | LCR | LNC | UNC | UCR
-----------------+------------+------------+------------+-----------+-----------+-----------+-----------
P3V3_BATT | 3.308 | Volts | nc | 2.538 | 2.695 | 3.308 | 3.448
hsamcmd --fault-show-all
===============================
tag  origin  fld                                     fault reason                                    count  time
---- ------- ----                                    -------------                                   ------ -----
1    bmc     /chassis-1/controller-a                 P3V3_BATT: Voltage Sensor 26 LNC                1      
2    bmc     /chassis-1/controller-a                 P3V3_BATT: Voltage Sensor 26 LCR                1      

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