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drivers/avr/usart1.c

@@ -54,7 +54,8 @@ usart1_write_ready_p (void)
 }
 
 
-/** Return non-zero if transmitter finished.  */
+/** Return non-zero if transmission finished.  This is useful for
+    half-duplex operation.  */
 bool
 usart1_write_finished_p (void)
 {

drivers/avr/usart1.h

@@ -37,7 +37,8 @@ bool
 usart1_write_ready_p (void);
 
 
-/** Return non-zero if transmitter finished.  */
+/** Return non-zero if transmission finished.  This is useful for
+    half-duplex operation.  */
 bool
 usart1_write_finished_p (void);