S32DS 5748G_SDK_3.0 question

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S32DS 5748G_SDK_3.0 question

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longfeiwang
Contributor III

I found a problem in the file of flexcan_driver.c ,The following interrupts are enabled whether the FIFO interrupt is used in the function static status_t FLEXCAN_StartRxMessageFifoData(uint8_t instance,flexcan_msgbuff_t *data,bool isBlocking).

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Is this a bug or a special consideration?

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PetrS
NXP TechSupport
NXP TechSupport

Hi, 

this is normal setting. When RXFIFO is used MB5, MB6 and MB7 flags are set to indicate message is available, RXFIFO is almost full and RXFIFO overflow. So mask bits are set to enable interrupts to be generated when those flags are set.

See more in chapter 43.5.8 Rx FIFO of the device RM.

BR, Petr

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PetrS
NXP TechSupport
NXP TechSupport

Hi, 

this is normal setting. When RXFIFO is used MB5, MB6 and MB7 flags are set to indicate message is available, RXFIFO is almost full and RXFIFO overflow. So mask bits are set to enable interrupts to be generated when those flags are set.

See more in chapter 43.5.8 Rx FIFO of the device RM.

BR, Petr

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longfeiwang
Contributor III

thks

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