topic Re: S32K3 MCAL CANFD mask setting bug in S32K

S32K3 MCAL CANFD mask setting bug

wuxianlong — Sat, 23 Nov 2024 08:01:20 GMT

Hi, All

The EDF bit the standard CANFD should be bit 14.but now it is 30. Is it a bug ? and it still exists in rtd5.0.0.

In the MCAL code, if you want to send a CANFD frame, you need to have the FDF byte of the CANFD message ID of the incoming parameter to be 1, that is, the Bit14 of the CANFD standard frame is 1. There is a Bug. According to the CANFD frame format CAN_43_FLEXCAN_FD_FRAME_U32 should mask bit 14. Now it is set to bit 30.

BRs,
xianlong

Re: S32K3 MCAL CANFD mask setting bug

wuxianlong — Sat, 23 Nov 2024 08:14:05 GMT

DataInfo.fd_enable = ((PduInfo->id & CAN_43_FLEXCAN_FD_FRAME_U32) != 0U) ? TRUE : FALSE;

Re: S32K3 MCAL CANFD mask setting bug

wuxianlong — Mon, 25 Nov 2024 06:42:19 GMT

Hi,
Sorry, I took a closer look. This is not a BUG, it is a software design. The CANFD_ID transmission parameter requires the user to fill in the maximum two bits of 32U.

/**
* @{
* @brief Can_IdType
* @details Represents the Identifier of an L-PDU. The two most significant bits specify theframe type:
* -00 CAN message with Standard CAN ID
* -01 CAN FD frame with Standard CAN ID
* -10 CAN message with Extended CAN ID
* -11 CAN FD frame with Extended CAN ID
* @implements Can_IdType_type
*/

/* Can_CreatePduInfo(id | CAN Can_IdType_type, swPduHandle,length, sdu) */
Can_PduInfo = Can_CreatePduInfo(0U | CAN_43_FLEXCAN_FD_FRAME_U32, 0U, 16U, Can_au8Sdu8bytes);

Re: S32K3 MCAL CANFD mask setting bug

Senlent — Thu, 05 Dec 2024 07:25:17 GMT

Hi@wuxianlong

Please refer to this post.

https://community.nxp.com/t5/S32K/Use-S32K358-flexcan-to-sent-extended-ID/td-p/1993198https://nxp.lightning.force.com/lightning/r/Case/500KA0000039pXzYAI/view