Mercurial > hg > beaglert
view projects/basic_sensor/main.cpp @ 39:638bc1ae2500 staging
Improved readibility of the DIGITAL code in the PRU, using register names instead of aliases and expanding some of the macros, removing unused macros. Binaries were not modified
author | Giulio Moro <giuliomoro@yahoo.it> |
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date | Wed, 13 May 2015 12:18:10 +0100 |
parents | 901d205d1a3c |
children | a6d223473ea2 |
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/* * main.cpp * * Created on: Oct 24, 2014 * Author: parallels */ #include <iostream> #include <cstdlib> #include <libgen.h> #include <signal.h> #include <getopt.h> #include "../../include/RTAudio.h" using namespace std; int gSensorInputFrequency = 0; int gSensorInputAmplitude = 1; // Handle Ctrl-C by requesting that the audio rendering stop void interrupt_handler(int var) { gShouldStop = true; } // Print usage information void usage(const char * processName) { cerr << "Usage: " << processName << " [options]" << endl; BeagleRT_usage(); cerr << " --frequency [-f] input: Choose the analog input controlling frequency (0-7; default 0)\n"; cerr << " --amplitude [-a] input: Choose the analog input controlling amplitude (0-7; default 1)\n"; cerr << " --help [-h]: Print this menu\n"; } int main(int argc, char *argv[]) { RTAudioSettings settings; // Standard audio settings struct option customOptions[] = { {"help", 0, NULL, 'h'}, {"frequency", 1, NULL, 'f'}, {"amplitude", 1, NULL, 'a'}, {NULL, 0, NULL, 0} }; // Set default settings BeagleRT_defaultSettings(&settings); // Parse command-line arguments while (1) { int c; if ((c = BeagleRT_getopt_long(argc, argv, "hf:a:", customOptions, &settings)) < 0) break; switch (c) { case 'h': usage(basename(argv[0])); exit(0); case 'f': gSensorInputFrequency = atoi(optarg); if(gSensorInputFrequency < 0 || gSensorInputFrequency > 7) { usage(basename(argv[0])); exit(0); } break; case 'a': gSensorInputAmplitude = atoi(optarg); if(gSensorInputAmplitude < 0 || gSensorInputAmplitude > 7) { usage(basename(argv[0])); exit(0); } break; case '?': default: usage(basename(argv[0])); exit(1); } } // Initialise the PRU audio device if(BeagleRT_initAudio(&settings, 0) != 0) { cout << "Error: unable to initialise audio" << endl; return -1; } if(settings.verbose) { cout << "--> Frequency on input " << gSensorInputFrequency << endl; cout << "--> Amplitude on input " << gSensorInputAmplitude << endl; } // Start the audio device running if(BeagleRT_startAudio()) { cout << "Error: unable to start real-time audio" << endl; return -1; } // Set up interrupt handler to catch Control-C and SIGTERM signal(SIGINT, interrupt_handler); signal(SIGTERM, interrupt_handler); // Run until told to stop while(!gShouldStop) { usleep(100000); } // Stop the audio device BeagleRT_stopAudio(); // Clean up any resources allocated for audio BeagleRT_cleanupAudio(); // All done! return 0; }