Fix available_buffer_size function

Oveln · Oveln · commit 347b4c7c34a9 · 2025-11-05T15:17:40.000+08:00
diff --git a/firmware/defmt-rtt/src/channel.rs b/firmware/defmt-rtt/src/channel.rs
@@ -111,9 +111,7 @@ impl Channel {
 fn available_buffer_size(read_cursor: usize, write_cursor: usize) -> usize {
     if read_cursor > write_cursor {
         read_cursor - write_cursor - 1
-    } else if read_cursor == 0 {
-        BUF_SIZE - write_cursor - 1
     } else {
-        BUF_SIZE - write_cursor
+        BUF_SIZE - write_cursor - 1 + read_cursor
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -111,9 +111,7 @@ impl Channel {`
`111`	`111`	`fn available_buffer_size(read_cursor: usize, write_cursor: usize) -> usize {`
`112`	`112`	`if read_cursor > write_cursor {`
`113`	`113`	`read_cursor - write_cursor - 1`
`114`		`- } else if read_cursor == 0 {`
`115`		`- BUF_SIZE - write_cursor - 1`
`116`	`114`	`} else {`
`117`		`- BUF_SIZE - write_cursor`
	`115`	`+ BUF_SIZE - write_cursor - 1 + read_cursor`
`118`	`116`	`}`
`119`	`117`	`}`