OTG_STATE_A_HOST
hsotg->op_state = OTG_STATE_A_HOST;
if (hsotg->op_state == OTG_STATE_A_HOST)
hsotg->op_state = OTG_STATE_A_HOST;
case OTG_STATE_A_HOST:
hsotg->op_state = OTG_STATE_A_HOST;
hsotg->op_state = OTG_STATE_A_HOST;
if (hsotg->op_state == OTG_STATE_A_HOST) {
hsotg->op_state = OTG_STATE_A_HOST;