LIN STACK S32K118 TX/RX

riglesias2021 — Fri, 18 Jun 2021 09:36:41 GMT

Hi, I am using the LIN stack contained in the S32 SDK for s32k118 and i need to know how the LIN driver works internally. I´m trying to understand how the driver manages to send/TX multiple bytes inside the same Interrupt handler (LIN_LPUART1_RxTx_IRQHandler)

From my understanding, a LIN response can contain multiple data bytes, so if the interrupt is triggered because the driver have received 1 byte, the driver should be able to respond with multiple data bytes as described in the Figure 2.3. However, inspecting the code

if (LPUART_GetStatusFlag(base, LPUART_RX_DATA_REG_FULL))

{

/* Get data from Data Register & Clear LPUART_RX_DATA_REG_FULL flag */

LPUART_Getchar(base, &tmpByte);

/* Process data in Data Register while receive, send data */

LIN_LPUART_DRV_ProcessFrame(instance, tmpByte);

}

I see that only one call of LPUART_PutChar() is made every LPUART_RX_DATA_REG_FULL interrupt is triggered, so i think that only only one byte is transmitted for each byte received. Could anybody clarify this? Thanks

Re: LIN STACK S32K118 TX/RX

PetrS — Thu, 24 Jun 2021 11:50:31 GMT

Hi,

yes byte by byte process is done. For each byte received LIN_LPUART_DRV_ProcessFrame is called and upon driver state new byte will be received or send.

BR, Petr

Re: LIN STACK S32K118 TX/RX

jancy — Fri, 15 Nov 2024 12:56:22 GMT

Hi,

I'm testing the LIN driver with LIN interface layer the Tx header TX response is updating ,for Tx header Rx response the register level LIN_LPUART1_RxTx_IRQHandler() the rx data was not updating .

Note: At the driver level the Tx and RX working fine.

topic LIN STACK S32K118 TX/RX in S32 SDK

LIN STACK S32K118 TX/RX

Re: LIN STACK S32K118 TX/RX

Re: LIN STACK S32K118 TX/RX