Help understanding a RESOURCE_EXHAUSTED when returning a Device Energy Management Forecast that contains slots

[tomasmcguinness]

I am trying to implement the DeviceEnergyManagement::Delegate

I create a Forecast and populate it with some basic details.

chip::app::Clusters::DeviceEnergyManagement::Structs::ForecastStruct::Type newForecast; 

newForecast.forecastID = 0;
newForecast.startTime = matterEpoch + 60;
newForecast.earliestStartTime = MakeOptional(DataModel::MakeNullable(matterEpoch));
newForecast.endTime = matterEpoch + 60 + mTimeRemaining;
newForecast.isPausable = true;

chip::DeviceLayer::PlatformMgr().LockChipStack();
device_energy_management_delegate.SetForecast(DataModel::MakeNullable(newForecast));
chip::DeviceLayer::PlatformMgr().UnlockChipStack();

I then use the chip-tool to fetch the data

chip-tool deviceenergymanagement read forecast 0x05 0x02

and it works

[1753425212.712] [1117709:1117738] [TOO] Endpoint: 2 Cluster: 0x0000_0098 Attribute 0x0000_0006 DataVersion: 4151521615
[1753425212.712] [1117709:1117738] [TOO]   Forecast: {
[1753425212.712] [1117709:1117738] [TOO]     ForecastID: 0
[1753425212.712] [1117709:1117738] [TOO]     ActiveSlotNumber: 0
[1753425212.712] [1117709:1117738] [TOO]     StartTime: 1753335086
[1753425212.712] [1117709:1117738] [TOO]     EndTime: 1753335116
[1753425212.712] [1117709:1117738] [TOO]     EarliestStartTime: 1753335026
[1753425212.712] [1117709:1117738] [TOO]     IsPausable: TRUE
[1753425212.712] [1117709:1117738] [TOO]     Slots: 0 entries
[1753425212.712] [1117709:1117738] [TOO]     ForecastUpdateReason: 0
[1753425212.712] [1117709:1117738] [TOO]    }
[1753425212.713] [1117709:1117738] [EM] <<< [E:40479i S:65427 M:15599186 (Ack:232252427)] (S) Msg TX from 000000000001B669 to 1:0000000000000005 [F10E] [UDP:[fe80::8ebf:eaff:fecb:b2ec%eth0]:5540] --- Type 0000:10 (SecureChannel:StandaloneAck) (B:34)

Perfect.

If I add some slots

newForecast.activeSlotNumber.SetNonNull(0);

chip::app::Clusters::DeviceEnergyManagement::Structs::SlotStruct::Type slots[1];

slots[0].minDuration = 10;
slots[0].maxDuration = 20;
slots[0].defaultDuration = 15;
slots[0].elapsedSlotTime = 0;
slots[0].remainingSlotTime = 0;

slots[0].slotIsPausable.SetValue(true);
slots[0].minPauseDuration.SetValue(10);
slots[0].maxPauseDuration.SetValue(60);

slots[0].nominalPower.SetValue(2500000);
slots[0].minPower.SetValue(1200000);
slots[0].maxPower.SetValue(7600000);
slots[0].nominalEnergy.SetValue(2000);

newForecast.slots = DataModel::List<const DeviceEnergyManagement::Structs::SlotStruct::Type>(slots, 1);

the chip-tool starts reporting an error

[1753425277.166] [1117825:1117854] [EM] Rxd Ack; Removing MessageCounter:186641466 from Retrans Table on exchange 28184i
[1753425277.166] [1117825:1117854] [DMG] StatusResponseMessage =
[1753425277.166] [1117825:1117854] [DMG] {
[1753425277.166] [1117825:1117854] [DMG]        Status = 0x89 (RESOURCE_EXHAUSTED),
[1753425277.166] [1117825:1117854] [DMG]        InteractionModelRevision = 12
[1753425277.167] [1117825:1117854] [DMG] }
[1753425277.167] [1117825:1117854] [IM] Received status response, status is 0x89 (RESOURCE_EXHAUSTED)

Can anybody help me understand what this is happening? Is it a memory issue or something else?

[tomasmcguinness]

If I instantiate a forecast in the constructor of the Delegate, I can get some data returned. Here is something from chip-tool