Module dma_controller

Abstractions to setup and use the DMA controller

Initializing

The DMAC should be initialized using the DmaController::init method. It will consume the DMAC object generated by the PAC. By default, all four priority levels will be enabled, but can be selectively enabled/disabled through the DmaController::enable_levels ansd DmaController::disable_levels methods.

Splitting Channels

Using the DmaController::split method will return a struct containing handles to individual channels.

Releasing the DMAC

Using the free method will deinitialize the DMAC and return the underlying PAC object.

Structs

• Channels
  Struct generating individual handles to each DMA channel
• DmaController
  Initialized DMA Controller
• FutureChannels
  Struct generating individual handles to each DMA channel for async operation
• PriorityLevelMask
  Mask representing which priority levels should be enabled/disabled
• RoundRobinMask
  Mask representing which priority levels should be configured as round-robin

Enums

• BurstLength
  Burst Length
• Ch0
  Type alias for a channel number
• Ch1
  Type alias for a channel number
• Ch2
  Type alias for a channel number
• Ch3
  Type alias for a channel number
• Ch4
  Type alias for a channel number
• Ch5
  Type alias for a channel number
• Ch6
  Type alias for a channel number
• Ch7
  Type alias for a channel number
• Ch8
  Type alias for a channel number
• Ch9
  Type alias for a channel number
• Ch10
  Type alias for a channel number
• Ch11
  Type alias for a channel number
• Ch12
  Type alias for a channel number
• Ch13
  Type alias for a channel number
• Ch14
  Type alias for a channel number
• Ch15
  Type alias for a channel number
• FifoThreshold
  FIFO Threshold
• PriorityLevel
  Channel Priority Level
• TriggerAction
  Trigger Action
• TriggerSource
  Trigger Source

Traits

• ChId
  Trait representing a DMA channel ID