Avoid compiler warning for unused parameter

henrygab · henrygab · commit 4276526c6788 · 2020-01-17T01:16:20.000-08:00
diff --git a/libraries/Adafruit_ZeroDMA/examples/zerodma_memcpy/zerodma_memcpy.ino b/libraries/Adafruit_ZeroDMA/examples/zerodma_memcpy/zerodma_memcpy.ino
@@ -17,6 +17,7 @@ volatile bool transfer_is_done = false; // Done yet?
 
 // Callback for end-of-DMA-transfer
 void dma_callback(Adafruit_ZeroDMA *dma) {
+  (void)dma; // avoid compiler warning about unused function parameter
   transfer_is_done = true;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -17,6 +17,7 @@ volatile bool transfer_is_done = false; // Done yet?`
`17`	`17`
`18`	`18`	`// Callback for end-of-DMA-transfer`
`19`	`19`	`void dma_callback(Adafruit_ZeroDMA *dma) {`
	`20`	`+ (void)dma; // avoid compiler warning about unused function parameter`
`20`	`21`	`transfer_is_done = true;`
`21`	`22`	`}`
`22`	`23`