// return the byte count received before timeout, or error(<0)
int32_t serial_recv_stream_timeout (serial_t *obj, char *prxbuf, uint32_t len, uint32_t timeout_ms, void *force_cs)
{
PHAL_RUART_OP pHalRuartOp;
PHAL_RUART_ADAPTER pHalRuartAdapter=(PHAL_RUART_ADAPTER)&(obj->hal_uart_adp);
uint32_t TimeoutCount=0, StartCount;
int ret;
void (*task_yield)(void);
task_yield = NULL;
pHalRuartOp = &(obj->hal_uart_op);
HalRuartEnterCritical(pHalRuartAdapter);
ret = pHalRuartOp->HalRuartIntRecv(pHalRuartAdapter, (u8*)prxbuf, len);
HalRuartExitCritical(pHalRuartAdapter);
if ((ret == HAL_OK) && (timeout_ms > 0)) {
TimeoutCount = (timeout_ms*1000/TIMER_TICK_US);
StartCount = HalTimerOp.HalTimerReadCount(1);
task_yield = (void (*)(void))force_cs;
while (pHalRuartAdapter->State & HAL_UART_STATE_BUSY_RX) {
if (HAL_TIMEOUT == RuartIsTimeout(StartCount, TimeoutCount)) {
ret = pHalRuartOp->HalRuartStopRecv((VOID*)pHalRuartAdapter);
ret = pHalRuartOp->HalRuartResetRxFifo((VOID*)pHalRuartAdapter);
pHalRuartAdapter->Status = HAL_UART_STATUS_TIMEOUT;
break;
}
if (NULL != task_yield) {
task_yield();
}
}
return (len - pHalRuartAdapter->RxCount);
} else {
return (-ret);
}
}
int32_t serial_recv_stream (serial_t *obj, char *prxbuf, uint32_t len)
{
PHAL_RUART_OP pHalRuartOp;
PHAL_RUART_ADAPTER pHalRuartAdapter=(PHAL_RUART_ADAPTER)&(obj->hal_uart_adp);
int ret;
pHalRuartOp = &(obj->hal_uart_op);
ret = pHalRuartOp->HalRuartIntRecv(pHalRuartAdapter, (u8*)prxbuf, len);
return (ret);
}