From 907a6df98d3148358edabb36512f4e655b64c871 Mon Sep 17 00:00:00 2001
From: gaotianyu1350 <gaotianyu1350@126.com>
Date: Sat, 13 Apr 2019 21:47:20 +0800
Subject: [PATCH] add gpio test

---
 biscuit/c/audio_hello.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/biscuit/c/audio_hello.c b/biscuit/c/audio_hello.c
index 25bc8b5..bf20dda 100644
--- a/biscuit/c/audio_hello.c
+++ b/biscuit/c/audio_hello.c
@@ -14,6 +14,7 @@ int main(int argc, char **argv)
 {
 	printf("hello audio world!\n");
     int fd;
+    fprintf(stderr, "test on gpio (stderr -> Audio)");
     fd = open("/dev/stdout", O_WRONLY);
     if (fd < 0) {
         fprintf(stdout, "fail to open /dev/stdout");