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N-sim
Emulation and simulation of Wireless Sensor Networks |
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/home/brennan/n-sim/Vaike/linux/system-addons/apps/vehicle-classify.c
Go to the documentation of this file.00001 00002 #include <int_fft.h> 00003 00004 #include <stdio.h> 00005 #include <stdlib.h> 00006 #include <ipc.h> 00007 #include <sensor_app.h> 00008 00009 int long_len = sizeof(long); 00010 00011 long classify(long fft_array[], long array_len) 00012 { 00013 long classifier = 0; 00014 00015 /* determine vehicle class */ 00016 00017 produce(Soap_Long, (unsigned char*)&classifier, long_len); 00018 } 00019 00020 int ipc_data_port, ipc_cmd_port; 00021 const long s=100, a=22; 00022 const char *my_app = "vehicle-classify"; 00023 00024 void sensor_app() 00025 { 00026 long i = 0, a_size=256; 00027 long s_val, a_val[a_size], fft_val[a_size]; 00028 00029 consume("raw-seismic", (unsigned char*)&s_val, &long_len); 00030 if (s_val > s ) { /* seismic trigger */ 00031 consume("raw-acoustic", (unsigned char*)&a_val[0], &long_len); 00032 if (a_val[0] > a ) { /* acoustic trigger */ 00033 while (i < a_size) { 00034 /* accumulate enough acoustic readings */ 00035 consume("raw-acoustic", (unsigned char*)&a_val[i], &long_len); 00036 if (a_val[i] ) 00037 i++; 00038 } 00039 /* external integer FFT algorithm */ 00040 fix_fft(fft_val, a_val, a_size, 0); 00041 00042 /* classification algorithm above */ 00043 classify(fft_val, a_size); 00044 } 00045 } 00046 } 00047 00048 00049 int main(int argc, char *argv[]) 00050 { 00051 if (argc != 3) 00052 fprintf(stderr, "Usage: %s <data port> <cmd port>", argv[0]); 00053 ipc_data_port = atoi(argv[1]); 00054 ipc_cmd_port = atoi(argv[2]); 00055 00056 initialize_ipc(-1); 00057 00058 while (!quitting()) { 00059 sensor_app(); 00060 } 00061 pthread_join(data_thread, NULL); 00062 pthread_join(cmd_thread, NULL); 00063 00064 return 0; 00065 } 00066 00067