MPC5746C FlexCAN can't trigger the reception interrupt and can't receive data with SDK 3.0

[huaqingren]

I have configured the FlexCAN in the GUI with SDK 3.0, the details as the attachment. And when I initial the flexcan channle0, use the follow code: 

flexcan_data_info_t dataInfo =

{

.msg_id_type = FLEXCAN_MSG_ID_STD,

.fd_padding = 0x00,

.data_length = 8,

.fd_enable = false,

.enable_brs = false,

.is_remote = false

};

FLEXCAN_DRV_ConfigRxMb(0U, 0U, &dataInfo, 0x300);

INT_SYS_EnableIRQ(CAN0_ORed_00_03_MB_IRQn);

FLEXCAN_DRV_Receive(0U,0U,&getdata);

FLEXCAN_DRV_Init(0U,&canCom0_State,&canCom0_InitConfig0);

And the test result is that the 'CAN0_ORed_00_03_MB_IRQn' interrupt can't be triggered. Would you help to check the issue, is there any incorrect code?

[PetrS]

Hi,

first init driver then prepare RXMB and start reception. Interrupt need not to be enabled, it is done within driver.
You can refer to below example, it adds RXFIFO and DMA as well but you can see how interrupt callback is installed and used.
https://community.nxp.com/t5/MPC5xxx-Knowledge-Base/Example-MPC5748G-FlexCAN-RXFIFO-DMA-SDK303-S32DS...

BR, Petr

[huaqingren]

Thank you for your reply. I have fixed this issue. But I have meet another question, how to just disable transimit interrupt and reserve reception interrupt. Could you support me?

[PetrS]

Hi,

TX MB/RX MB interrupts are enabled/disabled by driver. So you should not to manage this along with the flexcan driver. Upon successful message transmission the MB interrupt is called, callback (if installed) is called within interrupt with FLEXCAN_EVENT_TX_COMPLETE event. 

BR, Petr