RadiSys ATCA-4616 Spezifikationen PDF herunterladen (Seite 75)

Changing Shelf Settings Using HPI

Overriding the cooling algorithm with an HPI application

ThefollowingstepsillustratehowyoucandothisusingHPI:

1. OpenanHPIsessionusingtheactiveShelfManagerIPaddressasDomainId(seeWriting

HPIapplicationsonpage 57forinformation).

2. Usingthefanresources,setallfancontrolstotheSAHPI_CTRL_MODE_MANUALmode,

keepingtheirspeedsunchanged.Thisplacestheminthesystemmanageroverridemode.

Thefanresourcescanbeidentifiedbytheassociatedentitytype,

SAPHI_ENT_COOLING_UNIT.

3. Subscribeforeventsonthesession(seetheeventssectionoftheSAFHPISpecification).

StartlisteningforeventsinblockingmodebyissuingthesaHpiEventGet()functioncall

withTimeOut=SAHPI_TIMEOUT_BLOCK(seethefunctiondescriptionintheSAFHPI

Specification).Thisenablesreceptionofeventsdynamically.

4. Whenatemperatureassertioneventofsignificantseverityisreceived,feeditintothe

externalcoolingmodule.Thecoolingmodulecanthenusethefanresource'sfancontrol

toraiseorlowerthefanspeeds.

FormoreinformationonHPIcoolingandfancontrol,seetheSAFMappingSpecification.

1 2 ... 70 71 72 73 74 75 76 77 78 79 80 ... 145 146

Keine Kommentare

RadiSys ATCA-4616 Spezifikationen Seite 75