MSP430FR6972: msp430fr6972 DMA'S can not write destination when over 64k fram

Kissn Liu

Part Number: MSP430FR6972

i am using MSP430FR6972's DMA to transfer data from one FRAM block to another block ，when the destination over the 64K flash(ie.0x10000),

the data can not be transferred successfully!

here is the simunilation snap:（where the destination register can not be configured successfully，but when the destination small then 0x10000,it does!）

over 6 years ago

0 JD Crutchfield over 6 years ago

TI__Mastermind 28945 points

Hello Kissn,

There is some discussion on this topic in this thread and threads that it further links: https://e2e.ti.com/support/microcontrollers/msp430/f/166/t/564374

It looks to be some combination of the intrinsic functions you are using and possibly the data model you have set. I think the __data16_write_Addr should work, as the DMA0DA is in the lower 64kB of memory. The __data20 intrinsic is mainly intended for writing directly to high memory addresses.

Thanks,

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MSP430FR6972: msp430fr6972 DMA'S can not write destination when over 64k fram