CAN FD外设

1、STATIC_INLINE void CANFD_setMode(uint32_t base, CANFD_ModeType modes)

• function description: Set the working mode of CANFD module.
• parameter description:
  • input parameters: -base: base address of CANFD module register; -modes: selects the operating mode of the CANFD module.
  • return parameter: None.

2、STATIC_INLINE void CANFD_setCmd(uint32_t base, CANFD_CmdType cmds)

• function description: Set the data transmission of CANFD module.
• parameter description:
  • input parameters: -base: base address of CANFD module register; -cmds: Set the data sending. The optional parameter values are as follows: -0x01: stop the data transmission of the secondary transmission buffer; -0x02: start sending all data in the secondary send buffer; -0x04: start the transmission of single frame data in the secondary transmission buffer; -0x08: stop sending data in the main send buffer; -0x10: start the data transmission of the main transmission buffer; -0 x20: control CAN transceiver to enter standby mode; -0x40: Set the can controller to enter the listen-only mode; -0x80: Select the secondary transmit buffer for data transmission.
  • return parameter: None.

3、STATIC_INLINE void CANFD_setInterrupt(uint32_t base, CANFD_IntType ints)

• function description: Enables receive and transmit interrupts associated with the CANFD module.
• parameter description:
  • input parameters: -base: base address of CANFD module register; -ints: Select the interrupt to be enabled. The optional parameter values are as follows: - 0 x02: enable error interrupt; - 0 x04: Enable secondary transmit buffer transmit interrupt; - 0 x08: Enable main transmit buffer transmit interrupt; - 0x10: Enable receive buffer to be full interrupt; - 0x20: Enable receive buffer full load interrupt; - 0x40: Enable receive buffer overload interrupt; - 0x80: Enable receive interrupts for the receive buffer. An interrupt is generated for each valid and accepted message.
  • return parameter: None.

4、STATIC_INLINE void CANFD_setAcceptFilter(uint32_t base, uint32_t acr, uint32_t amr)

• function description: Set the receive filter of CANFD.
• parameter description:
  • input parameters: -base: base address of CANFD module register; -acr: the verification code of the filter, specifying the verification value. -amr: The mask of the filter, which specifies which bits need to be verified.
  • return parameter: None.

5、STATIC_INLINE u32 CANFD_isTransmitterBusy(uint32_t base)

• function description: Obtain the sending status of CANFD controller.
• parameter description:
  • input parameters: -base: base address of CANFD module register;
  • return parameters: -1: The controller is currently sending a frame; -0: The controller is not sending activity.

6、STATIC_INLINE u32 CANFD_isReceiveBusy(uint32_t base)

• function description: Obtain the receiving status of CANFD controller.
• parameter description:
  • input parameter: base: base address of CANFD module register;
  • return parameters: -1: The controller is currently receiving a frame; -0: The controller is not receiving activity.

7、void CANFD_sendFrame(uint32_t base, uint32_t sta_id, CANFD_TTSEN ttsen, CANFD_BRS brs, CANFD_FDF fdf, CANFD_RTR rtr, CANFD_IDE ide, const void *msg, u8 DLC)

• function description: CANFD send API function.
• parameter description:
  • input parameters: -base: base address of CANFD module register;
    • sta _ ID: ID of CAN data frame;
    • ttsen: send timestamp enable bit, -1: enable timestamp update, -0: Do not obtain the sending timestamp of this frame;
    • brs: bit rate switching, -1: data load and CRC switch to fast bit rate, -0: Use a slow bit rate for the entire frame;
    • fDF: set the working mode of CAN controller,
      • 1：CANFD， -0: Classic CAN;
    • rTR: Remote transmission request, -1: remote frame, -0: data frame;
    • iDE: Set the format of data frame, -1: extended format, -0: standard format;
    • mSG: the first address of the data to be sent;
    • dLC: Data length. return parameter: none

8、void CANFD_recvFrameBlocking(uint32_t base, void *msg)

• function description: CANFD receive API function.
• parameter description:
  • input parameters: -base: base address of CANFD module register;
    • msg: Received data frame.
  • return parameter: none