Function esp_idf_sys::touch_pad_isr_handler_register

pub unsafe extern "C" fn touch_pad_isr_handler_register(
    fn_: Option<unsafe extern "C" fn(arg1: *mut c_void)>, 
    arg: *mut c_void, 
    unused: c_int, 
    handle_unused: *mut intr_handle_t
) -> esp_err_t

@brief Register touch-pad ISR, @note Deprecated function, users should replace this with touch_pad_isr_register, because RTC modules share a same interrupt index. @param fn Pointer to ISR handler @param arg Parameter for ISR @param unused Reserved, not used @param handle_unused Reserved, not used @return - ESP_OK Success ; - ESP_ERR_INVALID_ARG GPIO error - ESP_ERR_NO_MEM No memory