Changed the ring_buffer indexes to uint16 to cut memory usage and increase capacity. Sorted struct members by size to improve the packing.

1 files changed, 5 insertions, 5 deletions

diff --git a/libmaple/ring_buffer.h b/libmaple/ring_buffer.h
index 9628005..b4c136f 100644
--- a/libmaple/ring_buffer.h
+++ b/libmaple/ring_buffer.h
@@ -14,14 +14,14 @@ extern "C"{
  * The total buffer size must be a power of two
  * One byte is left free to distinguish empty from full */
 typedef struct ring_buffer {
+    /** Buffer items are stored into */
+    volatile uint8 *buf;
     /** Index of the next item to remove */
-    volatile uint32 head;
+    volatile uint16 head;
     /** Index where the next item will get inserted */
-    volatile uint32 tail;
+    volatile uint16 tail;
     /** Buffer capacity */
-    uint8 size;
-    /** Buffer items are stored into */
-    volatile uint8 *buf;
+    uint16 size;
 } ring_buffer;
 
 /** Initialise a ring buffer.