/* main function 
, V1.0.0, firmware for GD32F1x0(x=3,5) , V2.0.0, firmware for GD32F1x0(x=3,5,7,9) , V3.0.0, firmware update for GD32F1x0(x=3,5,7,9) */
int main(void)
/* main function 
, V1.0.0, firmware for GD32F1x0(x=3,5) , V2.0.0, firmware for GD32F1x0(x=3,5,7,9) , V3.0.0, firmware update for GD32F1x0(x=3,5,7,9) */
int main(void)
{
    gd_eval_ledinit(LED1);
    gd_eval_ledinit(LED2);
    gd_eval_ledon(LED1);
    gd_eval_keyinit(KEY_TAMPER, KEY_MODE_EXTI);
    while (1);
}