feat: gpdma support (wip)

1 files changed, 20 insertions, 0 deletions

diff --git a/embassy-stm32/src/dma/ringbuffer/mod.rs b/embassy-stm32/src/dma/ringbuffer/mod.rs
index e462c71d4..99960bc74 100644
--- a/embassy-stm32/src/dma/ringbuffer/mod.rs
+++ b/embassy-stm32/src/dma/ringbuffer/mod.rs
@@ -92,6 +92,16 @@ impl<'a, W: Word> ReadableDmaRingBuffer<'a, W> {
         }
     }
 
+    /// The current ring-buffer read index.
+    pub fn read_index(&self, offset: usize) -> usize {
+        self.read_index.as_index(self.cap(), offset)
+    }
+
+    /// The current ring-buffer write index.
+    pub fn write_index(&self, offset: usize) -> usize {
+        self.write_index.as_index(self.cap(), offset)
+    }
+
     /// Reset the ring buffer to its initial state.
     pub fn reset(&mut self, dma: &mut impl DmaCtrl) {
         dma.reset_complete_count();
@@ -208,6 +218,16 @@ impl<'a, W: Word> WritableDmaRingBuffer<'a, W> {
         }
     }
 
+    /// The current ring-buffer read index.
+    pub fn read_index(&self, offset: usize) -> usize {
+        self.read_index.as_index(self.cap(), offset)
+    }
+
+    /// The current ring-buffer write index.
+    pub fn write_index(&self, offset: usize) -> usize {
+        self.write_index.as_index(self.cap(), offset)
+    }
+
     /// Reset the ring buffer to its initial state. The buffer after the reset will be full.
     pub fn reset(&mut self, dma: &mut impl DmaCtrl) {
         dma.reset_complete_count();