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Code for measuring the signal with a specified length and sampling rate, and saving it on a SD card.
Diff: main.cpp
- Revision:
- 1:a514e4de034d
- Parent:
- 0:c05b00be2229
- Child:
- 2:8c5b6522139f
diff -r c05b00be2229 -r a514e4de034d main.cpp --- a/main.cpp Thu Jul 13 19:33:37 2017 +0000 +++ b/main.cpp Fri Jul 14 14:41:10 2017 +0000 @@ -11,63 +11,26 @@ #include "measureSignal.h" #include "savePower.h" #include "sdcard.h" -#include "diagnosis.h" #include <algorithm> - -#include "rt_nonfinite.h" -#include "bpFilter.h" +#include "bandPass.h" +#include "envSignal.h" +#include "envSignal_emxAPI.h" +#include "envSignal_emxutil.h" +#include "envSignal_types.h" #include "main.h" -#include "bpFilter_terminate.h" -#include "bpFilter_emxAPI.h" -#include "bpFilter_initialize.h" - static emxArray_real32_T *argInit_Unboundedx1_real32_T(float* x); /* Define variables */ -int fs=33000; // sampling rate -//int N=297000; // original signal length -int xsize=33000;//262144; -int transient=000; +int fs=330000; // sampling rate +int xsize=33000;// signal length; +int transient=0; // transient part that is cut from the signal std::string filename = "noisetest2"; // name of file saved to SD card Serial pc(USBTX, USBRX); -float average(int numbers[], int size) -{ - float sum = 0.0; - for (int x = 0; x < size; x++) { - sum += (float)numbers[x]; - } - return sum /(float)size; -} - - -static emxArray_real32_T *argInit_Unboundedx1_real32_T(float* x) -{ - emxArray_real32_T *result; - static int iv0[1] = { 2 }; - - int idx0; - - // Set the size of the array. - // Change this size to the value that the application requires. - result = emxCreateND_real32_T(1, *(int (*)[1])&iv0[0]); - - // Loop over the array to initialize each element. - for (idx0 = 0; idx0 < result->size[0U]; idx0++) { - // Set the value of the array element. - // Change this value to the value that the application requires. - result->data[idx0] = x[idx0]; - } - - return result; -} - - - int main() { @@ -79,61 +42,54 @@ /*-----------------Record Signal with Codec---------------------*/ + int N=xsize+transient; //length of the original signal int *signal_raw = (int *)malloc(N*sizeof(int)); measureSignal(signal_raw,fs,N); // measure a signal with sampling frequency of fs and lenght of N // Scale data and convert to float - printf("Scaling data...\n"); float *signal = (float *)malloc(xsize*sizeof(float)); for (int i = 0; i < xsize; i++) { signal[i]=(float)(signal_raw[i+transient])/(5.8*pow(2.0,24)); } //free(signal_raw); + /*----------------Envelope Analysis-----------------------------*/ - /*----------------Envelope Analysis-----------------------------*/ printf("Performing analysis...\n"); emxArray_real32_T *signal2; - static int iv0[] = { xsize,1 }; - signal2 = emxCreateND_real32_T(1, *(int (*)[1])&iv0[0]); + emxArray_real32_T *fir_coef; + emxArray_real32_T *env_signal ; + + static int iv0[2] = { xsize,1 }; + signal2 = emxCreateND_real32_T(1, iv0); for (int idx0 = 0; idx0 < xsize; idx0++) { signal2->data[idx0] = signal[idx0]; } - //signal2 = argInit_Unboundedx1_real32_T(signal); - emxArray_real32_T *bpSignal ; - - emxInitArray_real32_T(&bpSignal, 1); + static int iv[2] = { 3201,1 }; + fir_coef = emxCreateND_real32_T(1, iv); + for (int idx = 0; idx < 3201; idx++) { + fir_coef->data[idx] = fir_c[idx]; + } - // Call the entry-point 'bpFilter'. - bpFilter(signal2, bpSignal); + + emxInitArray_real32_T(&env_signal, 1); + envSignal(signal2,fir_coef, env_signal); // Print data to terminal - - for (int i = 0; i < 50; i++) { - printf("%f %f %f\n",signal[i],signal2->data[i],bpSignal->data[i]); - + printf("analysis done\n"); + for (int i = 5000; i < 5200; i++) { + printf("%f %f %f\n",signal[i],signal2->data[i],env_signal->data[i]); } - /* - int max = *std::max_element(signal_raw, signal_raw + xsize); - int min = *std::min_element(signal_raw, signal_raw + xsize); - float Max=(float)max/(5.8*pow(2.0,24))*1000; - float Min=(float)min/(5.8*pow(2.0,24))*1000; - float Avg; - Avg=average(signal_raw,xsize)/(5.8*pow(2.0,24))*1000; - printf("Voltage: Min=%f Avg=%f Max=%f (mv)\n",Min,Avg,Max); - printf("Acceleration: Min=%f Avg=%f Max=%f (g) \n",Min/8.8, Avg/8.8,Max/8.8); - - */ /*---------------------------------------------------------------*/ //saveToSD(signal,xsize,filename.c_str()); //save data to SD card - saveToSD(signal,xsize,"signal.txt"); - saveToSD(bpSignal->data,xsize,"bpsignal.txt"); + // saveToSD(signal,xsize,"signal.txt"); + // saveToSD(env_signal->data,xsize,"envsignal.txt"); return 0;