ESP32-S3-Mini-1-N8 module - Heap memory free space is decreasing during program execution (IEP-1289) (IDFGH-13204)

[MN000022]

I am working on ESP32-S3-Mini-1-N8 module. I am using GATT server example. In this application,

1. BLE power save mode is implemented. External 32KHz crystal is used.
2. ESP32-S3 light sleep mode is implemented.
3. RTC GPIO wake up is implemented.
4. Timer periodic interrupts for 100us, 1ms & 10ms are implemented - GPtimer

Initialization for timer is as follows: / GPtimer 2 - 10ms / gptimer2 = NULL; QueueHandle_t Timer_queue2 = xQueueCreate(10, sizeof(example_queue_element_t)); if (!Timer_queue2) { return; } gptimer_config_t timer_config2 = { .clk_src = GPTIMER_CLK_SRC_DEFAULT, .direction = GPTIMER_COUNT_UP, .resolution_hz = 1000000, // 1MHz, 1 tick=1us }; ESP_ERROR_CHECK(gptimer_new_timer(&timer_config2, &gptimer2));

         gptimer_event_callbacks_t cbs2 = {
             .on_alarm = example_timer_on_alarm_cb_v2,
         };
         cbs2.on_alarm = example_timer_on_alarm_cb_v2;
         ESP_ERROR_CHECK(gptimer_register_event_callbacks(gptimer2, &cbs2, Timer_queue2));
         ESP_ERROR_CHECK(gptimer_enable(gptimer2));

         gptimer_alarm_config_t alarm_config2 = {
             .alarm_count = 10000,//1000000, // period = 10ms
         };
         ESP_ERROR_CHECK(gptimer_set_alarm_action(gptimer2, &alarm_config2));
         ESP_ERROR_CHECK(gptimer_start(gptimer2));

The issue I observed is, heap memory free space is getting decreased during application execution and when heap memory is around 500 bytes, ESP32-S3 goes in to unidentified state where BLE and GPIO wake up are also not working. Only it starts working once power is reset. I checked free heap memory using function 'xPortGetFreeHeapSize' during program execution. I have enabled task watchdog and panic handler invoked on task watchdog timeout. I have also checked without initializing BLE. I am facing same issue. Can anyone elaborate on this issue?

Thanks

[suda-morris]

sounds like your application is leaking memory, maybe you allocated some memory in the gptimer callback and never free them? @MN000022