From ce44d5e9c3d9ecaae05adbcf71b2c8ccd6fc2fc2 Mon Sep 17 00:00:00 2001
From: ymherklotz <ymherklotz@gmail.com>
Date: Tue, 27 Feb 2018 13:51:19 +0000
Subject: Nearly finished last code

---
 lab5/RTDSP/.launches/RTDSP.launch |  2 +-
 lab5/RTDSP/Matlab/coeff.txt       |  2 +-
 lab5/RTDSP/intio.c                | 28 ++++++++++------------------
 3 files changed, 12 insertions(+), 20 deletions(-)

diff --git a/lab5/RTDSP/.launches/RTDSP.launch b/lab5/RTDSP/.launches/RTDSP.launch
index 4330703..5ff2289 100644
--- a/lab5/RTDSP/.launches/RTDSP.launch
+++ b/lab5/RTDSP/.launches/RTDSP.launch
@@ -13,7 +13,7 @@
 <stringAttribute key="CCEDebugOptions.TARGET_CONFIGURATION_OPTION" value="full"/>
 <stringAttribute key="org.eclipse.cdt.launch.MEMORY_BLOCKS" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;&#13;&#10;&lt;memoryBlockExpressionList/&gt;&#13;&#10;"/>
 <stringAttribute key="com.ti.ccstudio.debug.core.MRU_PROGRAM_NAME" value="C:\Github\RTDSP\lab5\RTDSP\Debug\RTDSP.out"/>
-<stringAttribute key="com.ti.ccstudio.debug.core.MRU_MODULES" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;&#13;&#10;&lt;modules&gt;&#13;&#10;&lt;module name=&quot;C:\GIT\RTDSP\lab3\RTDSP\Debug\RTDSP.out&quot; time=&quot;Fri Jan 19 14:07:28 GMT 2018&quot; time_long=&quot;1516370848357&quot;/&gt;&#13;&#10;&lt;module name=&quot;C:\Github\RTDSP\lab3\RTDSP\Debug\RTDSP.out&quot; time=&quot;Tue Jan 23 11:15:11 GMT 2018&quot; time_long=&quot;1516706111426&quot;/&gt;&#13;&#10;&lt;module name=&quot;C:\GIT\RTDSP\lab4\RTDSP\Debug\RTDSP.out&quot; time=&quot;Thu Feb 01 11:44:21 GMT 2018&quot; time_long=&quot;1517485461898&quot;/&gt;&#13;&#10;&lt;module name=&quot;C:\github\RTDSP\lab4\RTDSP\Debug\RTDSP.out&quot; time=&quot;Thu Feb 15 13:55:55 GMT 2018&quot; time_long=&quot;1518702955359&quot;/&gt;&#13;&#10;&lt;module name=&quot;C:\Github\RTDSP\lab5\RTDSP\Debug\RTDSP.out&quot; time=&quot;Tue Feb 27 12:18:55 GMT 2018&quot; time_long=&quot;1519733935329&quot;/&gt;&#13;&#10;&lt;/modules&gt;&#13;&#10;"/>
+<stringAttribute key="com.ti.ccstudio.debug.core.MRU_MODULES" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;&#13;&#10;&lt;modules&gt;&#13;&#10;&lt;module name=&quot;C:\GIT\RTDSP\lab3\RTDSP\Debug\RTDSP.out&quot; time=&quot;Fri Jan 19 14:07:28 GMT 2018&quot; time_long=&quot;1516370848357&quot;/&gt;&#13;&#10;&lt;module name=&quot;C:\Github\RTDSP\lab3\RTDSP\Debug\RTDSP.out&quot; time=&quot;Tue Jan 23 11:15:11 GMT 2018&quot; time_long=&quot;1516706111426&quot;/&gt;&#13;&#10;&lt;module name=&quot;C:\GIT\RTDSP\lab4\RTDSP\Debug\RTDSP.out&quot; time=&quot;Thu Feb 01 11:44:21 GMT 2018&quot; time_long=&quot;1517485461898&quot;/&gt;&#13;&#10;&lt;module name=&quot;C:\github\RTDSP\lab4\RTDSP\Debug\RTDSP.out&quot; time=&quot;Thu Feb 15 13:55:55 GMT 2018&quot; time_long=&quot;1518702955359&quot;/&gt;&#13;&#10;&lt;module name=&quot;C:\Github\RTDSP\lab5\RTDSP\Debug\RTDSP.out&quot; time=&quot;Tue Feb 27 13:50:01 GMT 2018&quot; time_long=&quot;1519739401975&quot;/&gt;&#13;&#10;&lt;/modules&gt;&#13;&#10;"/>
 <stringAttribute key="CCEDebugOptions.CPU_NAME" value="Spectrum Digital DSK-EVM-eZdsp onboard USB Emulator_0/TMS320C671X"/>
 <stringAttribute key="org.eclipse.cdt.launch.PROJECT_ATTR" value="RTDSP"/>
 <stringAttribute key="org.eclipse.cdt.launch.GLOBAL_VARIABLES" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;&#13;&#10;&lt;globalVariableList/&gt;&#13;&#10;"/>
diff --git a/lab5/RTDSP/Matlab/coeff.txt b/lab5/RTDSP/Matlab/coeff.txt
index 6c1b0ff..1b9f5ae 100644
--- a/lab5/RTDSP/Matlab/coeff.txt
+++ b/lab5/RTDSP/Matlab/coeff.txt
@@ -1,2 +1,2 @@
-double a[] = {1.000000000000000e+00, -3.622738280081862e+00, 5.063887790131743e+00, -3.234610259864946e+00, 7.984164681552797e-01, };
+double a[] = {0.0, -3.622738280081862e+00, 5.063887790131743e+00, -3.234610259864946e+00, 7.984164681552797e-01, };
 double b[] = {9.756494393306392e-02, -3.428674269973439e-01, 4.911005379625814e-01, -3.428674269973437e-01, 9.756494393306386e-02, };
diff --git a/lab5/RTDSP/intio.c b/lab5/RTDSP/intio.c
index e7ae084..a083765 100644
--- a/lab5/RTDSP/intio.c
+++ b/lab5/RTDSP/intio.c
@@ -46,8 +46,7 @@
 #include "Matlab/coeff.txt"
 
 int N = sizeof(a)/sizeof(a[0]);
-short* x;
-double* y;
+double* d;
 
 
 /******************************* Global declarations ********************************/
@@ -81,9 +80,8 @@ void init_HWI(void);
 void ISR_AIC(void);
 /********************************** Main routine ************************************/
 void main(){
-    x = (short*)calloc(N, sizeof(short));
-	y = (double*)malloc(N * sizeof(double));
-	memset(y, 0.0, N * sizeof(double));
+	d = (double*)malloc(N * sizeof(double));
+	memset(d, 0.0, N * sizeof(double));
 
     // initialize board and the audio port
     init_hardware();
@@ -132,22 +130,16 @@ void init_HWI()
 /******************** INTERRUPT SERVICE ROUTINE ***********************/
 void ISR_AIC()
 {
-	int i = N-1;
-	double Y = 0.0;
+	int i = 0;
+	short x_in = mono_read_16Bit();
+	double y_out = d[0];
 
 	//Shift the values
-	for (; i > 0; --i) {
-		x[i] = x[i-1];
-		y[i] = y[i-1];
-		
-		Y += x[i] * b[i] - y[i] * a[i];
+	for (; i < N-2; ++i) {
+		d[i] = d[i+1] + b[i] * x_in - a[i] * y_out;
 	}
-
-	x[0] = mono_read_16Bit();
-	
-	Y += x[0] * b[0];
 	
-	y[0] = Y;
+	d[N-1] = b[N-1] * x_in - a[N-1] * y_out;
 
-	mono_write_16Bit((short)Y);
+	mono_write_16Bit((short)d[0]);
 }
-- 
cgit