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DMA register access

mrunal kulkarni69547
Prodigy 80 points
Other Parts Discussed in Thread: MSP430FG4618

 

 Hello TI E2E Community,

                I am using MSP430FG4618 for voltage and current sensing. Can I use DMA for transferring values of ADC12 conversion results.

There is no information about the DMA registers anywhwhere. Also not in the family user guide. The address for the DMA is given in the 

device datasheet but no further information is given.

 

Thanks,

Mrunal

 

  • 0
    TI__Guru 64460 points

    mrunal kulkarni said:

    I am using MSP430FG4618 for voltage and current sensing. Can I use DMA for transferring values of ADC12 conversion results.

    There is no information about the DMA registers anywhwhere. Also not in the family user guide. The address for the DMA is given in the 

    device datasheet but no further information is given.

    I don't understand your comment regarding there being no information on the DMA controller found on the MSP430FG4618.  The MSP430x4xx Family User's Guide (Rev. J) has a description of the DMA controller in Chapter 10.  The ADC12 is one of many possible triggers for the DMA channels.

    In addition, the MSP430FG461x Code Examples (Rev. D) have a number of examples illustrating how the DMA controller can be configured and used.

     

  • 0 in reply to BrandonAzbell
    Guru 227245 points

    BrandonAzbell said:
    I don't understand your comment regarding there being no information on the DMA controller

    Given that he did not completely ignored the DMA chapter in teh users guide, I guess he's talking about the available DMA triggers.
    for newer devices (5x family), those are usually in the device-specific datasheet, Short-Form Description->Peripherals->DMA Controller. But for the 4618 (and man more, including the 1x family), the datasheet only lists the existence of the DAM controller and not the device-specific triggers.

    However, thisinformation is found in Table 10-2 in the DMA chapter of the 4x family users guide. It's not as straight as getting a device-specific table, but all necessary information is contained. It's easy to skip this table if you don't know what you're lookign for and do not read through the DMA chapter from the beginning.

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