delete definition

2017-02-26 14:47:57 +01:00 · 2017-02-26 14:47:57 +01:00 · 93d8443d6a
parent c61b0f3393
commit 93d8443d6a
1 changed files with 0 additions and 4 deletions
--- a/src/main.c
+++ b/src/main.c
@ -6,10 +6,6 @@

 //#define PI 3.141592653584

-extern char* wave_signal; // simple waveform*
-extern unsigned short duration; // equivalent as 2000 ms duration sound
-extern unsigned int freq;
-
 int main(void)
 {
    unsigned int key = 0;