[DMA 8/8] Burst configuration

esp-hal/CHANGELOG.md

@@ -29,6 +29,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Added `OutputOpenDrain::unlisten` (#2625)
 - Added `{Input, Flex}::wait_for` (#2625)
 - Peripheral singletons now implement `Debug`, `PartialEq`, `defmt::Format` and `Eq` (except AnyPeripherals) (#2682)
+- `BurstConfig`, a device-specific configuration for configuring DMA transfers in burst mode (#2543)
+- `{DmaRxBuf, DmaTxBuf, DmaRxTxBuf}::set_burst_config` (#2543)
 
 ### Changed
 
@@ -75,6 +77,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - The `Dma` structure has been removed. (#2545)
 - Removed `embedded-hal 0.2.x` impls and deps from `esp-hal` (#2593)
 - Removed `Camera::set_` functions (#2610)
+- `DmaTxBuf::{compute_chunk_size, compute_descriptor_count, new_with_block_size}` (#2543)
 
 ## [0.22.0] - 2024-11-20
 

esp-hal/MIGRATING-0.22.md

@@ -22,10 +22,10 @@ by `esp_hal::init()`. The channels themselves have been renamed to match other p
 +let channel = peripherals.DMA_CH2;
 ```
 
-### Configuration changes
+### Channel configuration changes
 
 - `configure_for_async` and `configure` have been removed
-- PDMA devices (ESP32, ESP32-S2) provide no configurability
+- PDMA devices (ESP32, ESP32-S2) provide no channel configurability
 - GDMA devices provide `set_priority` to change DMA in/out channel priority
 
 ```diff
@@ -49,6 +49,12 @@ by `esp_hal::init()`. The channels themselves have been renamed to match other p
 +.with_dma(dma_channel);
 ```
 
+### Burst mode configuration
+
+Burst mode is now a property of buffers, instead of DMA channels. Configuration can be done by
+calling `set_burst_config` on buffers that support it. The configuration options and the
+corresponding `BurstConfig` type are device specfic.
+
 ### Usability changes affecting applications
 
 Individual channels are no longer wrapped in `Channel`, but they implement the `DmaChannel` trait.