DFS light sleep makes GPIOfloating

[lwshowl]

Code: Untitled.cpp Select all

    esp_pm_config_esp32c3_t pm_config = {

        .max_freq_mhz = 160,

        .min_freq_mhz = 80,

        .light_sleep_enable = true,

    };



    ESP_ERROR_CHECK(esp_pm_configure(&pm_config));



    io_conf.mode = GPIO_MODE_INPUT;



    io_conf.intr_type = GPIO_INTR_POSEDGE;



    io_conf.pin_bit_mask = GPIO_INPUT_PIN_SEL;



    io_conf.pull_down_en = GPIO_PULLDOWN_DISABLE;



    io_conf.pull_up_en = GPIO_PULLUP_ENABLE;



    gpio_config(&io_conf);



    // change gpio intrrupt type for one pin

    gpio_set_intr_type(GPIO_NUM_7, GPIO_INTR_POSEDGE);

i'm using ESP32-C3 with IDF power mannaging and Dynamic Frequence Scheduling features and set auto light sleep to be true
however, when the chip goes into auto light sleep ,the GPIO 7 toggles between high and low nearly every second , thus triggering unexpcted interrupts
i read about the data sheet and found that the GPIO 7 is in VDD3P3_CPU power domain which is supposed to keep on all the time ,and i did not check POWER DOWN CPU IN LIGHT SLEEP IN idf menuconfig
this is quite confusing, can anyone offer some help ?

[lwshowl]

if i disable light sleep in the PM function there is no such problem
but if is enabled ,IO7 interrupt is triggerd nearly every second