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EK-TM4C1294XL: EK-TM4C1294XL

Part Number: EK-TM4C1294XL

Hi Folks,

I'm working on a project, where I write data into SD card (an extension board has been developed for my launchpad to has SD card socket):

  • via SPI
  • by FatFS driver library
  • under FreeRTOS

my problem is, that this library perform RW operations synchronously leave the CPU's DMA unused. Do anybody know a FAT file system library that use DMA for data transfer?

Regards,

Norbert

  • Hello Norbert

    The use of SPI for Fat File System along with DMA would translate to control of the CS, GPIO via DMA as well. This would create a very inefficient model of use for the DMA. That is the reason why we do not have such an option in TivaWare