S32 SDK error handling on CAN and UART communication

[TomLightning]

Hi,

I'm using the software development kit in my project and I'm also using the FLEXCAN and LPUART module to communicate.

I installed the following callbacks:

LPUART_DRV_InstallRxCallback(...);
FLEXCAN_DRV_InstallEventCallback(...);
FLEXCAN_DRV_InstallErrorCallback(...);

1. At which uart_even_t will the UART rx callback function be triggered?

2. At which flexcan_event_type_t will the event callback function be triggered?

3. At which flexcan_event_type_t will the error Callback function be triggered?

4. What is the right method to handle rx/tx errors? Abort the non-block transmission/reception and restart it after a callback function was called?

Best regards

Tom

[PetrS]

Hi,

I can recommend to look over drivers interrupt routines for better insight.

1) events for LPUART Rx Event callback are

UART_EVENT_RX_FULL = 0x00U, /*!< Rx buffer is full */
UART_EVENT_END_TRANSFER = 0x02U, /*!< The current transfer is ending */
UART_EVENT_ERROR = 0x03U, /*!< An error occured during transfer */

2) events for FlexCAN Event callback are

FLEXCAN_EVENT_RX_COMPLETE, /*!< A frame was received in the configured Rx MB. */
FLEXCAN_EVENT_RXFIFO_COMPLETE, /*!< A frame was received in the Rx FIFO. */
FLEXCAN_EVENT_RXFIFO_WARNING, /*!< Rx FIFO is almost full (5 frames). */
FLEXCAN_EVENT_RXFIFO_OVERFLOW, /*!< Rx FIFO is full (incoming message was lost). */
FLEXCAN_EVENT_TX_COMPLETE, /*!< A frame was sent from the configured Tx MB. */
FLEXCAN_EVENT_DMA_COMPLETE, /*!< A complete transfer occurred on DMA */
FLEXCAN_EVENT_DMA_ERROR, /*!< A DMA transfer fail, because of a DMA channel error */

3) events for FlexCAN Error callback is just

FLEXCAN_EVENT_ERROR

4) yes, you can abort message. Some example for CAN callbacks can be found on 

https://community.nxp.com/t5/S32K-Knowledge-Base/Example-S32K144-FlexCAN-TX-RX-Error-ISR-test-S32DS2...

BR, Petr