不韋 呂 / Mbed 2 deprecated UIT2_IIR_Cascade

IIR filter of cascade form using float type operations and coefficients for ST Nucleo F401RE.

Dependencies:   UIT_ADDA mbed

Files at this revision

API Documentation at this revision

Revision 8:74c678577bb0, committed 2014-11-20

Comitter:
MikamiUitOpen
Date:
Thu Nov 20 07:21:07 2014 +0000
Parent:
7:f162ebd7683a
Commit message:
9

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file 
diff -r f162ebd7683a -r 74c678577bb0 main.cpp
--- a/main.cpp	Sat Nov 15 06:19:33 2014 +0000
+++ b/main.cpp	Thu Nov 20 07:21:07 2014 +0000
@@ -2,7 +2,7 @@
 // IIR フィルタ，縦続形，float で演算
 //      Analog Input : A0
 //      Analog Output: MCP4922 using SPI
-// 2014/11/12, Copyright (c) 2014 MIKAMI, Naoki
+// 2014/11/20, Copyright (c) 2014 MIKAMI, Naoki
 //--------------------------------------------------------------
 
 #include "mbed.h"
@@ -37,7 +37,7 @@
 {
     myDac_.ScfClockTim3(500000);    // cutoff frequency: 5 kHz
 
-    Un uk[ORDER_/2];            // 過去の計算結果を格納する配列
+    Un uk[ORDER_/2];                // 過去の計算結果を格納する配列
     // 過去の入力信号が格納される配列をクリア
     for (int k=0; k<ORDER_/2; k++)
     {
@@ -54,7 +54,7 @@
         for (int k=0; k<ORDER_/2; k++)
         {
             float un = ck_[k].a1*uk[k].u1 + ck_[k].a2*uk[k].u2 + yn;
-            yn = un + ck_[k].b1*uk[k].u1 +  + ck_[k].b2*uk[k].u2;
+            yn = un + ck_[k].b1*uk[k].u1 + ck_[k].b2*uk[k].u2;
             // 計算結果の移動
             uk[k].u2 = uk[k].u1;
             uk[k].u1 = un;