Add Capability Interfaces with the ACK Device SDK

#define ACK_POWER_CONTROLLER
#define ACK_BRIGHTNESS_CONTROLLER
#define ACK_MODE_CONTROLLER

// Application-specific property ordinals
#define PROPERTY_POWER_STATE 0 // Power controller ordinal
#define PROPERTY_BRIGHTNESS 1 // Brightness controller ordinal
#define PROPERTY_TIMER_MODE 2 // Timer (mode) controller ordinal
#define PROPERTY_SPEED_MODE 3 // Blinking (mode) controller ordinal

ACKPropertyTableEntry_t ACKUser_PropertyTable[] = {
  {
    PROPERTY_POWER_STATE,
    AddPowerProperty
  },
  {
    PROPERTY_BRIGHTNESS,
    AddLightBrightnessProperty
  },
  {
    PROPERTY_TIMER_MODE,
    AddLightTimerProperty
  },
  {
    PROPERTY_SPEED_MODE,
    AddLightBlinkingProperty
  },
  {
    0,
    NULL
  }
};

bool g_power = false; // Light power
bool AddPowerProperty(uint32_t propertyOrdinal, unsigned propertyFlags) {
  // Populate metadata about the property.
  // Leave the time-of-sample-field 0 to cause the current time to be sent.
  // Set the error margin to 10 milliseconds for illustrative purposes.
  ACKStateCommon_t common = {
    0,
    10,
    propertyFlags
  };
  ACKError_t error;
  error = ACK_AddPowerControllerProperty( & common, g_power);
  if (ACK_NO_ERROR != error) {
    ACK_DEBUG_PRINT_E("Error %u adding power property to event", error);
    return false;
  }
  return true;
}

bool g_power = false;

...

// Handler callback for incoming Alexa.PowerController directives.
// ACK_Process dispatches to this routine if such an incoming event is available from the
// ACK connectivity module when ACK_Process is called.
void ACKUser_OnPowerControllerDirective(int32_t correlationId, bool powerOn)
{
    bool powerStateChanged;

    // bitmasks of the properties that need to be included in the directive response and follow-up change report
    ACKPropertiesBits_t responsePropertiesBits = ACK_PROPERTY_BIT(POWER_STATE_PROPERTY);
    ACKPropertiesBits_t changedPropertiesBits = 0;

    ACK_DEBUG_PRINT_I("Received power controller directive; power %u.", powerOn);

    // Track whether the power state is actually changing. If so, we want to indicate this when completing
    // the directive, so an Alexa change report will be sent automatically.
    if(powerOn != g_power) {
        // need to indicate that power state has changed
       changedPropertiesBits = ACK_PROPERTY_BIT(POWER_STATE_PROPERTY);

        // change the internal state
        g_power = powerOn;
    }

   // Communicate with device power and change its state
    Hardware_SetPowerState(powerOn);

    // Complete directive and indicate changed properties
    ACK_CompleteDirectiveWithSuccess(
        correlationId,
        responsePropertiesBits,
        changedPropertiesBits);
}

ACK_CompleteDirectiveWithSuccess(
  correlationId,
  ACK_PROPERTY_BIT(PROPERTY_BRIGHTNESS_STATE),
  ACK_PROPERTY_BIT(PROPERTY_BRIGHTNESS_STATE) | ACK_PROPERTY_BIT(PROPERTY_POWER_STATE));

// State-report callback
void ACKUser_OnReportStateDirective(int32_t correlationId)
{
    // This sends all properties demonstrated in this application.
    ACK_CompleteStateReportWithSuccess(correlationId);
}

ACK_SendChangeReport(
 ack_alexa_change_report_cause_type_physical_interaction,
 ACK_PROPERTY_BIT(PROPERTY_POWER_STATE),
 ACK_PROPERTY_BIT(PROPERTY_POWER_STATE));