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TMS320F28P650DK: How to use sysconfig to design my CAN function

Cheng Zhijun
Prodigy 30 points
Part Number: TMS320F28P650DK
Other Parts Discussed in Thread: SYSCONFIG

I want to implement two functions ：

1. when recieved message identifier is 0x522, generate CAN rx interrupt

2. send DLC = 2~7 can messages，message identifier is 0x521.

3. bit rate is 1Mbps

how to config the CAN module by sysconfig？

when I config the CAN module, I have some doubts:

1. I just use CAN line 0 interrupt, why must I set both CAN interrupt 0 and CAN interrupt 1?

2. What do the options of Flags for Message Object mean? (Enable Transmit interrupts, use filtering base on the Message ID ...) 

3. My TX message's length has several different length, should I set several message objects, for example  I want send messages length are  2,3,4,5, need I create message object 2,3,4,5 for these different length messages?

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    TI__Mastermind 36650 points

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  • +1 回复 Cheng Zhijun
    TI__Mastermind 24435 points
    Cheng Zhijun 说：
    1. I just use CAN line 0 interrupt, why must I set both CAN interrupt 0 and CAN interrupt 1?

    No, you don't have to enable both interrupt lines. You can select either line 0 or line 1 or both from sysconfig. 

    Cheng Zhijun 说：
    2. What do the options of Flags for Message Object mean? (Enable Transmit interrupts, use filtering base on the Message ID ...) 

    Those parameters are used to set the bit fields of the following config registers:

    1. IFx Mask Register: 

    2. IFx ID register:

    3. and IFx message control register:

    Cheng Zhijun 说：
    3. My TX message's length has several different length, should I set several message objects, for example  I want send messages length are  2,3,4,5, need I create message object 2,3,4,5 for these different length messages?

    You can use separate message objects with different configuration for example different msg length. If you use the same message object, you have to reconfig the message length.