Memory Leak When Looping Scan

[Ticlext-Altihaf]

How

Chip type: esp32 (revision v3.1) Crystal frequency: 40 MHz Flash size: 4MB Features: WiFi, BT, Dual Core, 240MHz, Coding Scheme None App/part. size: 642,848/4,128,768 bytes, 15.57% ESP-IDF: v5.2.2 Min chip rev: v0.0 Max chip rev: v3.99 Chip rev: v3.1

fn main() -> Result<()> {
    esp_idf_svc::sys::link_patches();
    esp_idf_svc::log::EspLogger::initialize_default();
    // `async-io` uses the ESP IDF `eventfd` syscall to implement async IO.
    // If you use `tokio`, you still have to do the same as it also uses the `eventfd` syscall
    esp_idf_svc::io::vfs::initialize_eventfd(5).unwrap();

    tokio::runtime::Builder::new_current_thread()
        .enable_all()
        .build()
        .unwrap()
        .block_on(async move {
            loop {
                let ble_device = BLEDevice::take();
                let ble_scan = ble_device.get_scan();
                ble_scan
                    .active_scan(true)
                    .interval(100)
                    .window(99)
                    .on_result(move |_scan, device| {

                    });

                ble_scan.start(10000).await.unwrap();
                log::warn!("esp_get_minimum_free_heap_size: {:?}", unsafe {
                    esp_idf_sys::esp_get_minimum_free_heap_size()
                });
                log::warn!("esp_get_free_heap_size: {:?}", unsafe {
                    esp_idf_sys::esp_get_free_heap_size()
                });
            }
        });
    return Ok(());

Result

I (1069) esp32_nimble::client::ble_advertised_device: Unhandled type: adType: 0x1B
W (2939) esp_idf_example: esp_get_minimum_free_heap_size: 132340
W (2939) esp_idf_example: esp_get_free_heap_size: 132408
I (2939) NimBLE: GAP procedure initiated: discovery; 
I (2939) NimBLE: own_addr_type=0 filter_policy=0 passive=0 limited=0 filter_duplicates=1 
I (2949) NimBLE: duration=2000ms
I (2959) NimBLE: 

... sometime later

I (1124849) esp32_nimble::client::ble_advertised_device: Unhandled type: adType: 0x1B
W (1134689) esp_idf_example: esp_get_minimum_free_heap_size: 72468
W (1134689) esp_idf_example: esp_get_free_heap_size: 74084
I (1134689) NimBLE: GAP procedure initiated: discovery; 
I (1134699) NimBLE: own_addr_type=0 filter_policy=0 passive=0 limited=0 filter_duplicates=1 
I (1134709) NimBLE: duration=10000ms
I (1134709) NimBLE: 

Expected

It should not keep hogging ram, or did I do something wrong?

[taks]

Could you try calling ble_scan.clear_results() in each loop?

[Ticlext-Altihaf]

It seems to solve it, sorry for bothering you, thanks