Power Delivery Class

class PowerDeliveryClass : public Acroname::BrainStem::EntityClass

PowerDeliveryClass: Power Delivery or PD is a power specification which allows more charging options and device behaviors within the USB interface. This Entity will allow you to directly access the vast landscape of PD.

Public Functions

PowerDeliveryClass(void)

Constructor.

~PowerDeliveryClass(void)

Destructor.

aErr getConnectionState(uint8_t *state)

Gets the current state of the connection in the form of an enumeration.

Parameters:

state – Pointer to be filled with the current connection state.

Returns:

Returns common entity return values

aErr getNumberOfPowerDataObjects(const uint8_t partner, const uint8_t powerRole, uint8_t *numRules)

Gets the number of Power Data Objects (PDOs) for a given partner and power role.

Parameters:

  • partner – Indicates which side of the PD connection is in question.

    • Local = 0 = powerdeliveryPartnerLocal

    • Remote = 1 = powerdeliveryPartnerRemote

  • powerRole – Indicates which power role of PD connection is in question.

    • Source = 1 = powerdeliveryPowerRoleSource

    • Sink = 2 = powerdeliveryPowerRoleSink

  • numRules – Variable to be filled with the number of PDOs.

Returns:

Returns common entity return values

aErr getPowerDataObject(const uint8_t partner, const uint8_t powerRole, const uint8_t ruleIndex, uint32_t *pdo)

Gets the Power Data Object (PDO) for the requested partner, powerRole and index.

Parameters:

  • partner – Indicates which side of the PD connection is in question.

    • Local = 0 = powerdeliveryPartnerLocal

    • Remote = 1 = powerdeliveryPartnerRemote

  • powerRole – Indicates which power role of PD connection is in question.

    • Source = 1 = powerdeliveryPowerRoleSource

    • Sink = 2 = powerdeliveryPowerRoleSink

  • ruleIndex – The index of the PDO in question. Valid index are 1-7.

  • pdo – Variable to be filled with the requested power rule.

Returns:

Returns common entity return values

aErr setPowerDataObject(const uint8_t powerRole, const uint8_t ruleIndex, const uint32_t pdo)

Sets the Power Data Object (PDO) of the local partner for a given power role and index.

Parameters:

  • powerRole – Indicates which power role of PD connection is in question.

    • Source = 1 = powerdeliveryPowerRoleSource

    • Sink = 2 = powerdeliveryPowerRoleSink

  • ruleIndex – The index of the PDO in question. Valid index are 1-7.

  • pdo – Power Data Object to be set.

Returns:

Returns common entity return values

aErr resetPowerDataObjectToDefault(const uint8_t powerRole, const uint8_t ruleIndex)

Resets the Power Data Object (PDO) of the Local partner for a given power role and index.

Parameters:

  • powerRole – Indicates which power role of PD connection is in question.

    • Source = 1 = powerdeliveryPowerRoleSource

    • Sink = 2 = powerdeliveryPowerRoleSink

  • ruleIndex – The index of the PDO in question. Valid index are 1-7.

Returns:

Returns common entity return values

aErr getPowerDataObjectList(uint32_t *buffer, const size_t bufferLength, size_t *unloadedLength)

Gets all Power Data Objects (PDOs). Equivalent to calling PowerDeliveryClass::getPowerDataObject() on all partners, power roles, and index’s.

Parameters:

  • buffer – pointer to the start of a c style buffer to be filled The order of which is:

    • Rules 1-7 Local Source

    • Rules 1-7 Local Sink

    • Rules 1-7 Partner Source

    • Rules 1-7 Partner Sink.

  • bufferLength – Length of the buffer to be filed

  • unloadedLength – Length that was actually received and filled. On success this value should be 28 (7 rules * 2 partners * 2 power roles)

Returns:

Returns common entity return values

aErr getPowerDataObjectEnabled(const uint8_t powerRole, const uint8_t ruleIndex, uint8_t *enabled)

Gets the enabled state of the Local Power Data Object (PDO) for a given power role and index. Enabled refers to whether the PDO will be advertised when a PD connection is made. This does not indicate the currently active rule index. This information can be found in Request Data Object (RDO).

Parameters:

  • powerRole – Indicates which power role of PD connection is in question.

    • Source = 1 = powerdeliveryPowerRoleSource

    • Sink = 2 = powerdeliveryPowerRoleSink

  • ruleIndex – The index of the PDO in question. Valid index are 1-7.

  • enabled – Variable to be filled with enabled state.

Returns:

Returns common entity return values

aErr setPowerDataObjectEnabled(const uint8_t powerRole, const uint8_t ruleIndex, const uint8_t enabled)

Sets the enabled state of the Local Power Data Object (PDO) for a given powerRole and index. Enabled refers to whether the PDO will be advertised when a PD connection is made. This does not indicate the currently active rule index. This information can be found in Request Data Object (RDO).

Parameters:

  • powerRole – Indicates which power role of PD connection is in question.

    • Source = 1 = powerdeliveryPowerRoleSource

    • Sink = 2 = powerdeliveryPowerRoleSink

  • ruleIndex – The index of the PDO in question. Valid index are 1-7.

  • enabled – The state to be set.

Returns:

Returns common entity return values

aErr getPowerDataObjectEnabledList(const uint8_t powerRole, uint8_t *enabledList)

Gets all Power Data Object enables for a given power role. Equivalent of calling PowerDeliveryClass::getPowerDataObjectEnabled() for all indexes.

Parameters:

  • powerRole – Indicates which power role of PD connection is in question.

    • Source = 1 = powerdeliveryPowerRoleSource

    • Sink = 2 = powerdeliveryPowerRoleSink

  • enabledList – Variable to be filled with a mapped representation of the enabled PDOs for a given power role. Values align with a given rule index (bits 1-7, bit 0 is invalid)

Returns:

Returns common entity return values

aErr getRequestDataObject(const uint8_t partner, uint32_t *rdo)

Gets the current Request Data Object (RDO) for a given partner. RDOs: Are provided by the sinking device. Exist only after a successful PD negotiation (Otherwise zero). Only one RDO can exist at a time. i.e. Either the Local or Remote partner RDO

Parameters:

  • partner – Indicates which side of the PD connection is in question.

    • Local = 0 = powerdeliveryPartnerLocal

    • Remote = 1 = powerdeliveryPartnerRemote

  • rdo – Variable to be filled with the current RDO. Zero indicates the RDO is not active.

Returns:

Returns common entity return values

aErr setRequestDataObject(const uint32_t rdo)

Sets the current Request Data Object (RDO) for a given partner. (Only the local partner can be changed.) RDOs: Are provided by the sinking device. Exist only after a successful PD negotiation (Otherwise zero). Only one RDO can exist at a time. i.e. Either the Local or Remote partner RDO

Parameters:

rdo – Request Data Object to be set.

Returns:

Returns common entity return values

aErr getPowerRole(uint8_t *powerRole)

Gets the power role that is currently being advertised by the local partner. (CC Strapping).

Parameters:

powerRole – Variable to be filed with the power role

  • Disabled = 0 = powerdeliveryPowerRoleDisabled

  • Source = 1= powerdeliveryPowerRoleSource

  • Sink = 2 = powerdeliveryPowerRoleSink

  • Source/Sink = 3 = powerdeliveryPowerRoleSourceSink (Dual Role Port)

Returns:

Returns common entity return values

aErr setPowerRole(const uint8_t powerRole)

Set the current power role to be advertised by the Local partner. (CC Strapping).

Parameters:

powerRole – Value to be applied.

  • Disabled = 0 = powerdeliveryPowerRoleDisabled

  • Source = 1= powerdeliveryPowerRoleSource

  • Sink = 2 = powerdeliveryPowerRoleSink

  • Source/Sink = 3 = powerdeliveryPowerRoleSourceSink (Dual Role Port)

Returns:

Returns common entity return values

aErr getPowerRolePreferred(uint8_t *powerRole)

Gets the preferred power role currently being advertised by the Local partner. (CC Strapping).

Parameters:

powerRole – Value to be applied.

  • Disabled = 0 = powerdeliveryPowerRoleDisabled

  • Source = 1= powerdeliveryPowerRoleSource

  • Sink = 2 = powerdeliveryPowerRoleSink

Returns:

Returns common entity return values

aErr setPowerRolePreferred(const uint8_t powerRole)

Set the preferred power role to be advertised by the Local partner (CC Strapping).

Parameters:

powerRole – Value to be applied.

  • Disabled = 0 = powerdeliveryPowerRoleDisabled

  • Source = 1= powerdeliveryPowerRoleSource

  • Sink = 2 = powerdeliveryPowerRoleSink

Returns:

Returns common entity return values

aErr getCableVoltageMax(uint8_t *maxVoltage)

Gets the maximum voltage capability reported by the e-mark of the attached cable.

Parameters:

maxVoltage – Variable to be filled with an enumerated representation of voltage.

  • Unknown/Unattached (0)

  • 20 Volts DC (1)

  • 30 Volts DC (2)

  • 40 Volts DC (3)

  • 50 Volts DC (4)

Returns:

Returns common entity return values

aErr getCableCurrentMax(uint8_t *maxCurrent)

Gets the maximum current capability report by the e-mark of the attached cable.

Parameters:

maxCurrent – Variable to be filled with an enumerated representation of current.

  • Unknown/Unattached (0)

  • 3 Amps (1)

  • 5 Amps (2)

Returns:

Returns common entity return values

aErr getCableSpeedMax(uint8_t *maxSpeed)

Gets the maximum data rate capability reported by the e-mark of the attached cable.

Parameters:

maxSpeed – Variable to be filled with an enumerated representation of data speed.

  • Unknown/Unattached (0)

  • USB 2.0 (1)

  • USB 3.2 gen 1 (2)

  • USB 3.2 / USB 4 gen 2 (3)

  • USB 4 gen 3 (4)

Returns:

Returns common entity return values

aErr getCableType(uint8_t *type)

Gets the cable type reported by the e-mark of the attached cable.

Parameters:

type – Variable to be filled with an enumerated representation of the cable type.

  • Invalid, no e-mark and not Vconn powered (0)

  • Passive cable with e-mark (1)

  • Active cable (2)

Returns:

Returns common entity return values

aErr getCableOrientation(uint8_t *orientation)

Gets the current orientation being used for PD communication

Parameters:

orientation – Variable filled with an enumeration of the orientation.

  • Unconnected (0)

  • CC1 (1)

  • CC2 (2)

Returns:

Returns common entity return values

aErr request(const uint8_t request)

Requests an action of the Remote partner. Actions are not guaranteed to occur.

Parameters:

request – Request to be issued to the remote partner

  • pdRequestHardReset (0)

  • pdRequestSoftReset (1)

  • pdRequestDataReset (2)

  • pdRequestPowerRoleSwap (3)

  • pdRequestPowerFastRoleSwap (4)

  • pdRequestDataRoleSwap (5)

  • pdRequestVconnSwap (6)

  • pdRequestSinkGoToMinimum (7)

  • pdRequestRemoteSourcePowerDataObjects (8)

  • pdRequestRemoteSinkPowerDataObjects (9)

Returns:

The returned error represents the success of the request being sent to the partner only. The success of the request being serviced by the remote partner can be obtained through PowerDeliveryClass::requestStatus() Returns common entity return values

aErr requestStatus(uint32_t *status)

Gets the status of the last request command sent.

Parameters:

status – Variable to be filled with the status

Returns:

Returns common entity return values

aErr getOverride(uint32_t *overrides)

Gets the current enabled overrides

Parameters:

overrides – Bit mapped representation of the current override configuration.

Returns:

Returns common entity return values

aErr setOverride(const uint32_t overrides)

Sets the current enabled overrides

Parameters:

overrides – Overrides to be set in a bit mapped representation.

Returns:

Returns common entity return values

aErr resetEntityToFactoryDefaults(void)

Resets the PowerDeliveryClass Entity to it factory default configuration.

aErr getFlagMode(const uint8_t flag, uint8_t *mode)

Gets the current mode of the local partner flag/advertisement. These flags are apart of the first Local Power Data Object and must be managed in order to accurately represent the system to other PD devices. This API allows overriding of that feature. Overriding may lead to unexpected behaviors.

Parameters:

  • flag – Flag/Advertisement to be modified

  • mode – Variable to be filled with the current mode.

    • Disabled (0)

    • Enabled (1)

    • Auto (2) default

Returns:

Returns common entity return values

aErr setFlagMode(const uint8_t flag, const uint8_t mode)

Sets how the local partner flag/advertisement is managed. These flags are apart of the first Local Power Data Object and must be managed in order to accurately represent the system to other PD devices. This API allows overriding of that feature. Overriding may lead to unexpected behaviors.

Parameters:

  • flag – Flag/Advertisement to be modified

  • mode – Value to be applied.

    • Disabled (0)

    • Enabled (1)

    • Auto (2) default

Returns:

Returns common entity return values

aErr getPeakCurrentConfiguration(uint8_t *configuration)

Gets the Peak Current Configuration for the Local Source. The peak current configuration refers to the allowable tolerance/overload capabilities in regards to the devices max current. This tolerance includes a maximum value and a time unit.

Parameters:

configuration – An enumerated value referring to the current configuration.

  • Allowable values are 0 - 4

Returns:

Returns common entity return values

aErr setPeakCurrentConfiguration(const uint8_t configuration)

Sets the Peak Current Configuration for the Local Source. The peak current configuration refers to the allowable tolerance/overload capabilities in regards to the devices max current. This tolerance includes a maximum value and a time unit.

Parameters:

configuration – An enumerated value referring to the configuration to be set

  • Allowable values are 0 - 4

Returns:

Returns common entity return values

aErr getFastRoleSwapCurrent(uint8_t *swapCurrent)

Gets the Fast Role Swap Current The fast role swap current refers to the amount of current required by the Local Sink in order to successfully preform the swap.

Parameters:

swapCurrent – An enumerated value referring to current swap value.

  • 0A (0)

  • 900mA (1)

  • 1.5A (2)

  • 3A (3)

Returns:

Returns common entity return values

aErr setFastRoleSwapCurrent(const uint8_t swapCurrent)

Sets the Fast Role Swap Current The fast role swap current refers to the amount of current required by the Local Sink in order to successfully preform the swap.

Parameters:

swapCurrent – An enumerated value referring to value to be set.

  • 0A (0)

  • 900mA (1)

  • 1.5A (2)

  • 3A (3)

Returns:

Returns common entity return values

Public Static Functions

static aErr packDataObjectAttributes(uint8_t *attributes, const uint8_t partner, const uint8_t powerRole, const uint8_t ruleIndex)

Helper function for packing Data Object attributes. This value is used as a subindex for all Data Object calls with the BrainStem Protocol.

Parameters:

  • attributes – variable to be filled with packed values.

  • partner – Indicates which side of the PD connection.

    • Local = 0 = powerdeliveryPartnerLocal

    • Remote = 1 = powerdeliveryPartnerRemote

  • powerRole – Indicates which power role of PD connection.

    • Source = 1 = powerdeliveryPowerRoleSource

    • Sink = 2 = powerdeliveryPowerRoleSink

  • ruleIndex – Data object index.

Returns:

aErrNone on success; aErrParam with bad input.

static aErr unpackDataObjectAttributes(const uint8_t attributes, uint8_t *partner, uint8_t *powerRole, uint8_t *ruleIndex)

Helper function for unpacking Data Object attributes. This value is used as a subindex for all Data Object calls with the BrainStem Protocol.

Parameters:

  • attributes – variable to be filled with packed values.

  • partner – Indicates which side of the PD connection.

    • Local = 0 = powerdeliveryPartnerLocal

    • Remote = 1 = powerdeliveryPartnerRemote

  • powerRole – Indicates which power role of PD connection.

    • Source = 1 = powerdeliveryPowerRoleSource

    • Sink = 2 = powerdeliveryPowerRoleSink

  • ruleIndex – Data object index.

Returns:

aErrNone on success; aErrParam with bad input.