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TMS320F280049: Access to the GpioCtrlRegs with the CLA

Thomas Hattermann
Prodigy 250 points

Part Number: TMS320F280049
Other Parts Discussed in Thread: C2000WARE

Hi,

is it possible to access the GpioCtrlRegs with the CLA?

I want to switch an 8 Bit Port with a LCD connected from Input to Output and back.

Thomas Hattermann

  • 0
    TI__Mastermind 30185 points

    Hello Thomas,

    Thomas Hattermann said:
    is it possible to access the GpioCtrlRegs with the CLA?

    No, I don't believe this is possible. From my understanding, the CLA is similar to the additional core on the F2837xD or F2838xD devices, which requires GPIO configuration to be done by core 1 before core 2 can write/read from it.

  • 0
    Prodigy 250 points

    Hi Amir,

    I think the F2837xD has a CLA type 1 the F28004c has a CLA type 2. Type 2 can access much more Perripherie eg the GPxDat Register, what is not possible on Type 1.
    But I was not

  • 0 in reply to Thomas Hattermann
    Prodigy 250 points

    Hi Amir

    I think the F2837xD has a CLA type 1? the F28004x has a CLA type 2. Type 2 can access much more Perripherie eg. the GPxDat Register, what is not possible on Type 1 on the F2803x.
    But I was not able access the GpioCtrlReg. I found much Register to enable access to all the Peripherie, but non for this.

    Best Reguards Thomas

  • 0 in reply to Thomas Hattermann
    TI__Mastermind 30185 points

    (FYI if you accidentally hit reply you can always go to More > Edit to edit your post instead of creating a duplicate reply. If you don't mind, I'll be deleting the duplicate reply here to prevent confusion for future customers)

    Thomas Hattermann said:
    Type 2 can access much more Perripherie eg. the GPxDat Register, what is not possible on Type 1 on the F2803x.

    I don't see where any documentation states that the CLA is able to access configuration/control registers, from what I see in the C2000 Peripheral's Guide and the CLA (Type 2) Block Diagram in the F28004x reference manual it has access to triggers and data from different peripherals, but not GPIO configurations. In fact, I also check some C2000Ware CLA examples and could not find an instance where the GPIO were configured by the CLA.

    Based on this I would hazard to say the CLA doesn't have access to GPIO control registers. Just for confirmation I will forward this to the CLA expert, if the CLA does have access to the GPIO control registers then we will need to update the documentation talking about it.

  • 0 in reply to Omer Amir
    TI__Guru* 93800 points

    Hello, 

    Please refer to the below table in the F28004x datasheet . CLA can access the data registers but not the control registers. 

    Best regards,

    Lori