38.1.5.16 usart_async_is_rx_not_empty
Check if the USART receiver is not empty.
int32_t usart_async_is_rx_not_empty(
const struct usart_async_descriptor *const descr
)
Parameters
- descr
-
Type: const struct usart_async_descriptor Struct *const
A USART descriptor which is used to communicate via USART
Returns
Type: int32_t
The status of the USART RX empty checking.
- 1
-
The USART receiver is not empty
- 0
-
The USART receiver is empty