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Uwe Bonnes
Uwe Bonnes
Chief
March 17, 2016
Question

stm32l011x.h and 21 Missing DMA1_Channel6/7

  • March 17, 2016
  • 1 reply
  • 496 views
Posted on March 17, 2016 at 16:49

V1.5.0 for L011 and L021 miss following defines:

#define DMA1_Channel6       ((DMA_Channel_TypeDef *) DMA1_Channel6_BASE)

#define DMA1_Channel7       ((DMA_Channel_TypeDef *) DMA1_Channel7_BASE)

RM0377 Rev5 tells that DMA1 for Cat 1 devices is full featured, so this contradicts ''full-featured''. Dataseeht also tells about 7-channel DMA controller.

Please correct this inconsistancy

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    1 reply

    Nesrine M_O
    Nesrine M_O
    Associate
    March 22, 2016
    Posted on March 22, 2016 at 14:22

    Hi bonnes.uwe,

    •In the RM0377 (Rev5), section 10: Direct memory access controller (DMA): “The DMA controller has up to 7 channels (except for category 1 devices which feature up to 5 channels)�

    •In the STM32L011x3/4 and STM32L021x4 datasheets, paragraph 3.9 Direct memory access (DMA):â€� The flexible 5-channel, general-purpose DMA is able to manage memory-to-memory, 

    peripheral-to-memory and memory-to-peripheral transfers.� But I confirm that there is a typo in the first page of datasheets and it will be corrected later.

    -Syrine-

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