pub unsafe extern "C" fn log_timestamp() -> u32 {
    esp_hal::time::Instant::now()
        .duration_since_epoch()
        .as_millis() as u32
}
**************************************************************************
Name: esp_log_timestamp

Description:
Get system time by millim second

Input Parameters:
None

Returned Value:
System time

*************************************************************************
esp-wifi/src/wifi/os_adapter.rs