Add short delay after enabling GPIO pin. Issue #176

wb2osz · wb2osz · commit c59053536e04 · 2019-07-07T11:29:23.000-04:00
diff --git a/ptt.c b/ptt.c
@@ -458,6 +458,9 @@ void export_gpio(int ch, int ot, int invert, int direction)
 	    exit (1);
 	  }
 	}
+	/* Wait for udev to adjust permissions after enabling GPIO. */
+	/* https://github.com/wb2osz/direwolf/issues/176 */
+	SLEEP_MS(250);
 	close (fd);
 
 /*

Original file line number	Diff line number	Diff line change
`@@ -458,6 +458,9 @@ void export_gpio(int ch, int ot, int invert, int direction)`
`458`	`458`	`exit (1);`
`459`	`459`	`}`
`460`	`460`	`}`
	`461`	`+ /* Wait for udev to adjust permissions after enabling GPIO. */`
	`462`	`+ /* https://github.com/wb2osz/direwolf/issues/176 */`
	`463`	`+ SLEEP_MS(250);`
`461`	`464`	`close (fd);`
`462`	`465`
`463`	`466`	`/*`