不韋 呂
/
UIT2_VariableIIR_LPF
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Dependencies: UIT_IIR_Filter UIT_ACM1602NI UITDSP_ADDA mbed UIT_AQM1602
Revision 1:e9b451a71ebf, committed 2014-11-10
- Comitter:
- MikamiUitOpen
- Date:
- Mon Nov 10 06:07:42 2014 +0000
- Parent:
- 0:a9412b9e85b7
- Child:
- 2:0d954a85ff0a
- Commit message:
- 2
Changed in this revision
--- a/UIT_ACM1602NI.lib Thu Oct 23 06:44:40 2014 +0000 +++ b/UIT_ACM1602NI.lib Mon Nov 10 06:07:42 2014 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/MikamiUitOpen/code/UIT_ACM1602NI/#d8048b36d982 +http://mbed.org/users/MikamiUitOpen/code/UIT_ACM1602NI/#7c6b2df4e60b
--- a/UIT_ADDA.lib Thu Oct 23 06:44:40 2014 +0000 +++ b/UIT_ADDA.lib Mon Nov 10 06:07:42 2014 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/MikamiUitOpen/code/UIT_ADDA/#77bc5550dc10 +http://mbed.org/users/MikamiUitOpen/code/UIT_ADDA/#651809e96a2d
--- a/main.cpp Thu Oct 23 06:44:40 2014 +0000
+++ b/main.cpp Mon Nov 10 06:07:42 2014 +0000
@@ -3,7 +3,7 @@
// A0: Signal to be filtered
// A2: Value which controls cutoff frequency
//
-// 2014/10/23, Copyright (c) 2014 MIKAMI, Naoki
+// 2014/11/10, Copyright (c) 2014 MIKAMI, Naoki
//--------------------------------------------------------------
#include "mbed.h"
@@ -68,30 +68,40 @@
// fc: cutoff frequency, 200 -- 1000 Hz
float fc = 800.0f*(a2_/4095.6f) + 200.0f;
- if (fabs(fc - fc1) > 10.0f)
+ if (sw1_ == 0)
{
- printf("fc = %4d\r\n", int(fc+0.5f));
- char str[18];
- sprintf(str, "fc = %4d Hz", int(fc+0.5f));
- lcd.SetXY(0, 0);
- lcd.WriteString(str);
- fc1 = fc;
+ printf("Through\r\n");
+ lcd.WriteStringXY("Through ", 0, 0);
+ wait(0.2f);
+ lcd.ClearLine(0);
+ fc1 = 0;
+ }
+ else
+ {
+ if (fabs(fc - fc1) > 10.0f)
+ {
+ printf("fc = %4d\r\n", int(fc+0.5f));
+ char str[18];
+ sprintf(str, "fc = %4d Hz", int(fc+0.5f));
+ lcd.WriteStringXY(str, 0, 0);
+ fc1 = fc;
- // Design new coefficients based on new fc
- BiliearDesign::Coefs coefsLpf[ORDER/2];
- float g0;
- lpfDsgn.Execute(fc, coefsLpf, g0);
+ // Design new coefficients based on new fc
+ BiliearDesign::Coefs coefsLpf[ORDER/2];
+ float g0;
+ lpfDsgn.Execute(fc, coefsLpf, g0);
- // Update new coefficients
- Biquad::Coefs coefsIir[ORDER/2];
- for (int n=0; n<ORDER/2; n++)
- {
- coefsIir[n].a1 = coefsLpf[n].a1;
- coefsIir[n].a2 = coefsLpf[n].a2;
- coefsIir[n].b1 = coefsLpf[n].b1;
- coefsIir[n].b2 = 1.0f;
+ // Update new coefficients
+ Biquad::Coefs coefsIir[ORDER/2];
+ for (int n=0; n<ORDER/2; n++)
+ {
+ coefsIir[n].a1 = coefsLpf[n].a1;
+ coefsIir[n].a2 = coefsLpf[n].a2;
+ coefsIir[n].b1 = coefsLpf[n].b1;
+ coefsIir[n].b2 = 1.0f;
+ }
+ iirLpf_.SetCoefs(g0, coefsIir);
}
- iirLpf_.SetCoefs(g0, coefsIir);
}
wait(0.1f);
}
--- a/mbed.bld Thu Oct 23 06:44:40 2014 +0000 +++ b/mbed.bld Mon Nov 10 06:07:42 2014 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/mbed_official/code/mbed/builds/552587b429a1 \ No newline at end of file +http://mbed.org/users/mbed_official/code/mbed/builds/031413cf7a89 \ No newline at end of file