From d15acaf23dcc779bd65b393ace28178bd8ac152d Mon Sep 17 00:00:00 2001
From: unknown <dm2515@eews303a-028.ic.ac.uk>
Date: Wed, 31 Jan 2018 11:03:28 +0000
Subject: Need to debug

---
 lab4/RTDSP/intio.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'lab4/RTDSP/intio.c')

diff --git a/lab4/RTDSP/intio.c b/lab4/RTDSP/intio.c
index 9992d4a..d7dceeb 100644
--- a/lab4/RTDSP/intio.c
+++ b/lab4/RTDSP/intio.c
@@ -44,7 +44,7 @@
 // PI defined here for use in your code
 #define PI 3.141592653589793
 #define N 249
-double buffer[N];
+double buffer[N]= {0};
 unsigned int ptr = N-1;
 
 /******************************* Global declarations ********************************/
@@ -133,9 +133,9 @@ void ISR_AIC()
 	sample_out = non_circ_fir();
 	mono_write_16Bit(sample_out);
 	
-	ptr--;
 	if (ptr == 0)
-		ptr = N-1;
+		ptr = N;
+	ptr--;
 }
 
 // Perform linear convolution
-- 
cgit