QUESTION : Dynamic "name" after init_accessory - without esp restart

[kiralikbeyin]

I am trying to change accessory name of a switch and also tried to change Tv -> _input_source1name

Is it possbile to change strings like int of accessory values..?

homekit_characteristic_t input_source1_name = HOMEKIT_CHARACTERISTIC_( CONFIGURED_NAME, "HDMI 1", .callback=HOMEKIT_CHARACTERISTIC_CALLBACK(on_input_configured_name) );

for example change HDMI 1 to Cinema after homekit accessory init (without esp restart)

[maximkulkin]

So, normally names of accessories are not expected to change. Those characteristic permissions do not even include write and notification permissions. Updating those values is not recommended. For TVs Apple used a separate type of characteristic - CONFIGURED_NAME (as opposed to normal NAME characteristic everywhere else) which permissions do include reading, writing and notifications. You can attach custom getters/setters for those characteristics that will get/put data from a persisted storage (e.g. sysparams):

sysparam_set_string("input1_name", value.string_value);

or

if (sysparam_get_string("input1_name", &s) == SYSPARAM_OK) {
    homekit_value_destruct(&input_source1_name.value);
    input_source1_name.value = HOMEKIT_STRING(s);
}

[kiralikbeyin]

...
homekit_characteristic_t input_source1_name = HOMEKIT_CHARACTERISTIC_(
    CONFIGURED_NAME, "HDMI 1",
    //.callback=HOMEKIT_CHARACTERISTIC_CALLBACK(on_input_configured_name),
    .getter = get_input_one,
    .setter = set_input_one
);

homekit_service_t input_source1 =
    HOMEKIT_SERVICE_(INPUT_SOURCE, .characteristics=(homekit_characteristic_t*[]){
        HOMEKIT_CHARACTERISTIC(NAME, "hdmi1"),
        HOMEKIT_CHARACTERISTIC(IDENTIFIER, 1),
        &input_source1_name,
        HOMEKIT_CHARACTERISTIC(INPUT_SOURCE_TYPE, HOMEKIT_INPUT_SOURCE_TYPE_HDMI),
        HOMEKIT_CHARACTERISTIC(IS_CONFIGURED, true),
        HOMEKIT_CHARACTERISTIC(CURRENT_VISIBILITY_STATE, HOMEKIT_CURRENT_VISIBILITY_STATE_SHOWN),
        NULL
    });

...
homekit_value_t get_input_one()
{
        sprintf(my_string,"%d", my_number);
        printf("get_input_one %s\n", my_string);

        taskYIELD();
        //homekit_value_destruct(&input_source1_name.value);
        input_source1_name.value = HOMEKIT_STRING(my_string);
        taskYIELD();

        //return HOMEKIT_STRING(my_string);
        return (input_source1_name.value);
}

void set_input_one()
{
        sprintf(my_string,"%d", my_number);
        printf("set_input_one %s\n", my_string);

        input_source1_name.value = HOMEKIT_STRING(my_string);
        printf("set_input_one input_source1_name %s\n", input_source1_name.value.string_value);

        //homekit_characteristic_notify(&input_source1_name, input_source1_name.value);
        homekit_characteristic_notify(&input_source1, input_source1_name.value);

}

if i remove free(value->string_value); input name changes only once,

void homekit_value_destruct(homekit_value_t *value) {
    if (!value->is_null) {
        switch (value->format) {
            case homekit_format_string:
                if (!value->is_static && value->string_value)
                    {
                      free(value->string_value);
                      ??
                    }
                break;
            case homekit_format_tlv:
                if (!value->is_static && value->tlv_values)
                    tlv_free(value->tlv_values);
                break;
            case homekit_format_data:
                if (!value->is_static && value->data_value)
                    free(value->data_value);
                break;
            default:
                // unknown format
                break;
        }
    }
}

if free(value->string_value); stays;

get_input_one 88
assertion "heap != NULL && "free() target pointer is outside heap areas"" failed: file "/Users/my/esp/esp-idf/components/heap/heap_caps.c", line 304, function: heap_caps_free

abort() was called at PC 0x400dc2bf on core 0
0x400dc2bf: __assert_func at /builds/idf/crosstool-NG/.build/HOST-x86_64-apple-darwin12/xtensa-esp32-elf/src/newlib/newlib/libc/stdlib/assert.c:62 (discriminator 8)

Backtrace:0x40088063:0x3ffd4d50 0x40088861:0x3ffd4d70 0x4008f63e:0x3ffd4d90 0x400dc2bf:0x3ffd4e00 0x400820c7:0x3ffd4e30 0x4008f669:0x3ffd4e50 0x4012f0a2:0x3ffd4e70 0x40130649:0x3ffd4e90 0x40131659:0x3ffd4ed0 0x40132de6:0x3ffd4ef0 0x400efdb9:0x3ffd4f10 0x40130926:0x3ffd4f70 0x40131e83:0x3ffd4fa0 0x40132f4c:0x3ffd4fe0 0x4008bf29:0x3ffd50a0
0x40088063: panic_abort at /Users/my/esp/esp-idf/components/esp_system/panic.c:368

0x40088861: esp_system_abort at /Users/my/esp/esp-idf/components/esp_system/system_api.c:112

0x4008f63e: abort at /Users/my/esp/esp-idf/components/newlib/abort.c:46

0x400dc2bf: __assert_func at /builds/idf/crosstool-NG/.build/HOST-x86_64-apple-darwin12/xtensa-esp32-elf/src/newlib/newlib/libc/stdlib/assert.c:62 (discriminator 8)

0x400820c7: heap_caps_free at /Users/my/esp/esp-idf/components/heap/heap_caps.c:304 (discriminator 1)

0x4008f669: free at /Users/my/esp/esp-idf/components/newlib/heap.c:46

0x4012f0a2: homekit_value_destruct at /Users/my/Documents/esp32-yeni/components/common/homekit/src/accessories.c:130

0x40130649: write_characteristic_json at /Users/my/Documents/esp32-yeni/components/common/homekit/src/server.c:594

0x40131659: homekit_server_on_get_accessories at /Users/my/Documents/esp32-yeni/components/common/homekit/src/server.c:2002 (discriminator 3)

0x40132de6: homekit_server_on_message_complete at /Users/my/Documents/esp32-yeni/components/common/homekit/src/server.c:2959

0x400efdb9: http_parser_execute at /Users/my/esp/esp-idf/components/nghttp/port/http_parser.c:1895 (discriminator 3)

0x40130926: homekit_client_process at /Users/my/Documents/esp32-yeni/components/common/homekit/src/server.c:3062

0x40131e83: homekit_run_server at /Users/my/Documents/esp32-yeni/components/common/homekit/src/server.c:3286

0x40132f4c: homekit_server_task at /Users/my/Documents/esp32-yeni/components/common/homekit/src/server.c:3450 (discriminator 3)

0x4008bf29: vPortTaskWrapper at /Users/my/esp/esp-idf/components/freertos/port/xtensa/port.c:168

@maximkulkin

i tried as you suggested but i'm stuck here..

[kiralikbeyin]

Ok i changed "my_string" char array variable to char pointer so it can be "free"