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EK-TM4C1294XL: What is the maximum length of DMA transfer from memory to UART please?

Part Number: EK-TM4C1294XL

I am trying to put up to 2048 bytes from memory to UART in 1 go, is it possible?

Thanks!

Ping

  • Hi Ping,

      Please find below description. The maximum size is 1024 bytes. 

    9.2.5 Channel Configuration
    The μDMA controller uses an area of system memory to store a set of channel control structures
    in a table. The control table may have one or two entries for each μDMA channel. Each entry in the
    table structure contains source and destination pointers, transfer size, and transfer mode. The
    control table can be located anywhere in system memory, but it must be contiguous and aligned on
    a 1024-byte boundary

  • Thanks for confirm back!