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TWR-k60 UART tirgger DMA  failure

Question asked by fan xy on Sep 28, 2014
Latest reply on Oct 9, 2014 by Mark Butcher

Hello,

 

I use UART tansmit  trigger DMA,   i configurate the UART and DMA registers  refer to related reference manual  and demo ,  while, the resulte is the UART can't trigger the DMA .

 

I can use  DMA_TCD1_CSR-》 START trigger the DMA and then the data can send  through UART.

 

I have checked my program for many times ,  plase help me .

 

The screenshot  is the configration .

 

I use UART3 can  DMA1.3.png4.png

 

intiUart.png

dmainit.png

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