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Original question:

TMS320C6748: Function library call issue

TMS320C6748: IER

?? ?
Prodigy 150 points
Part Number: TMS320C6748

Why is the content of the IER table in the user manual different from that in CCS? In fact, I think CCS is correct, but in this case, I do not have the corresponding information and cannot program.

  • 0
    TI__Mastermind 27060 points

    Hello,

    Could you restate your question and be more specific?

    Thanks，

    Gary

  • 0 回复 Gary Lu
    Prodigy 150 points

    Hello Gary,

    In the user manual, the 32-bit IER may not look much different, but in CCS, it is divided into 16 bits.

  • 0 回复 ?? ?
    TI__Mastermind 27060 points

    Hello，

    The TMS320C6748 uses a 32-bit IER to control which interrupts are enabled or disabled. In the user manual, the IER is described as a 32-bit register, meaning it can store 32 individual bits, each of which corresponds to a specific interrupt source.

    However, when you are working with the CCS integrated development environment for programming the TMS320C6748, the IER may be presented as two separate 16-bit registers. This is likely a result of how the CCS environment handles the register in its interface or API.

    In practical terms, this means that when you are programming the microcontroller using CCS, you may need to access and manipulate the IER as two separate 16-bit values rather than a single 32-bit value.

    I hope my explanation is helpful to you

    Regards，

    Gary

  • 0 回复 Gary Lu
    Prodigy 150 points

    Hello Gary,

    Even if I treat it as two 16 bit registers, how should I know the corresponding function for each internal bit?

    And I want to know, I have found that some registers have the Reserve option. If I set a bit to Reserve, what function does this represent?

  • 0 回复 ?? ?
    TI__Mastermind 27060 points

    The use of a "Reserve" option for a bit in a register typically means that the bit is reserved for future use or is not currently assigned a specific function.