can_rx.h File Reference

Functions
void	printCANRxFrame (const size_t busIndex, const CANRxFrame &rx)
uint32_t	getFourBytesLsb (const CANRxFrame &frame, int offset)
uint16_t	getTwoBytesLsb (const CANRxFrame &frame, int offset)
uint16_t	getTwoBytesMsb (const CANRxFrame &frame, int offset)

Function Documentation

getFourBytesLsb()

uint32_t getFourBytesLsb	(	const CANRxFrame &	frame,
		int	offset
	)

Definition at line 143 of file can_rx.cpp.

                                                              {
    return (frame.data8[offset + 3] << 24) +
        (frame.data8[offset + 2] << 16) +
        (frame.data8[offset + 1] << 8) +
        frame.data8[offset];
}

Referenced by processCanRequestCalibration().

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getTwoBytesLsb()

uint16_t getTwoBytesLsb	(	const CANRxFrame &	frame,
		int	offset
	)

Definition at line 150 of file can_rx.cpp.

                                                             {
    return (frame.data8[offset + 1] << 8) + frame.data8[offset];
}

Referenced by getShiftedLSB_intel(), processBMW_e46(), processBMW_e90(), and processCanUserControl().

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getTwoBytesMsb()

uint16_t getTwoBytesMsb	(	const CANRxFrame &	frame,
		int	offset
	)

Definition at line 154 of file can_rx.cpp.

                                                             {
    return (frame.data8[offset] << 8) + frame.data8[offset + 1];
}

Referenced by processNissan(), and processNissanSecondVss().

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printCANRxFrame()

void printCANRxFrame	(	const size_t	busIndex,
		const CANRxFrame &	rx
	)

this build-in CAN sniffer is very basic but that's our CAN sniffer

Definition at line 29 of file can_rx.cpp.

                                                                  {
    // only print info if we're in can debug mode
 
    int id = CAN_ID(rx);
 
    if (CAN_ISX(rx)) {
        // print extended IDs in hex only
        efiPrintf("CAN%d RX: ID %07x DLC %d: %02x %02x %02x %02x %02x %02x %02x %02x",
                busIndex + 1,
                id,
                rx.DLC,
                rx.data8[0], rx.data8[1], rx.data8[2], rx.data8[3],
                rx.data8[4], rx.data8[5], rx.data8[6], rx.data8[7]);
    } else {
        // internet people use both hex and decimal to discuss packed IDs, for usability it's better to print both right here
        efiPrintf("CAN%d RX: ID %03x(%d) DLC %d: %02x %02x %02x %02x %02x %02x %02x %02x",
                busIndex + 1,
                id, id, // once in hex, once in dec
                rx.DLC,
                rx.data8[0], rx.data8[1], rx.data8[2], rx.data8[3],
                rx.data8[4], rx.data8[5], rx.data8[6], rx.data8[7]);
    }
}

Referenced by processCanRxMessage(), IsoTpRx::readTimeout(), and CanStreamerState::receiveFrame().

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