main.cpp

00001 /*---------------------------------------------------------------------------
00002 
00003     QRSS Receiver Application
00004         
00005     by Clayton ZL3TKA/VK1TKA
00006     clayton@isnotcrazy.com
00007 
00008     main function
00009 
00010 ---------------------------------------------------------------------------*/
00011 // include files
00012 
00013 #include "mbed.h"
00014 #include "global.h"
00015 #include "EthernetNetIf.h"
00016 #include "UDPSocket.h"
00017 #include "dnsresolve.h"
00018 #include "gps.h"
00019 #include "BufferSys.h"
00020 #include "I2S_Rx.h"
00021 #include "DSP.h"
00022 #include "comms.h"
00023 
00024 // Definitions
00025 
00026 // Macros
00027 
00028 // Local Data
00029 
00030 // Global Data
00031 
00032 // Serial port interface to the PC
00033 Serial pc( USBTX, USBRX );
00034 
00035 // LEDs
00036 DigitalOut OnLED( LED1 );
00037 
00038 // IO
00039 DigitalOut TestOscillator( p21 );
00040 #define TESTOSC_ON      0
00041 #define TESTOSC_OFF     1
00042 
00043 // The Buffer pool for audio data
00044 TBufferPool     BufferPool;
00045 
00046 // The array of buffers for the pool
00047 TBufferData BufferDataArray[NUM_OF_BUFFERS];
00048 
00049 // I2S Object
00050 TI2SReceiver    AudioInput( BufferPool );
00051 
00052 // Communications Object
00053 TCommunications Comms;
00054 
00055 
00056 // Function Prototypes
00057 
00058 //---------------------------------------------------------------------------
00059 //  MAIN
00060 //---------------------------------------------------------------------------
00061 
00062 //---------------------------------------------------------------------------
00063 //
00064 //  Main start routine
00065 //      Just starts everything running
00066 //
00067 int main()
00068 {
00069     TDSPProcessor   ADCBuffer;
00070     uint32_t        uiCurrentTestmode = 0x1234;
00071 
00072     // Set up IOs
00073     OnLED = 1;
00074     TestOscillator = TESTOSC_OFF;
00075 
00076     // Set up PC port
00077     pc.baud( 38400 );
00078 
00079     // Report
00080     printf( "\r\n\r\nQRSS_Rx Application running\r\n" );
00081     printf( "Built " __DATE__ "   " __TIME__ "\r\n" );
00082     printf( "System Core Clock = %ld\r\n", SystemCoreClock );
00083 
00084     // Add array of buffers to the pool
00085     pc.printf ("Setting up buffer pool with %d buffer of %d samples ...", NUM_OF_BUFFERS, BUFFERSYS_SIZE );
00086     BufferPool.AddNewMsgsToPool( BufferDataArray, NUM_OF_BUFFERS );
00087     printf (" OK\r\n");
00088 
00089     // Set up audio receiver
00090     pc.printf ("Initialise the I2S Receiver ...");
00091     AudioInput.Init();
00092     printf (" OK\r\n");
00093 
00094     // Set up GPS
00095     pc.printf ("Initialise GPS ...");
00096     GPSModule.Init();
00097     printf (" OK\r\n");
00098 
00099     // Set up communications
00100     pc.printf ("Initialise Communications ...");
00101     Comms.Init();
00102     Comms.SetServer( "192.168.0.15" );      // default QRSS Server Address (could be a DNS name)
00103     printf (" OK\r\n");
00104 
00105     ADCBuffer.NCOFrequency( TEST_NCO_FREQ );
00106 
00107     // echo GPS data out the PC port
00108     while(1) 
00109     {
00110         // Poll the sub-systems
00111         Net::poll();
00112         GPSModule.Poll();
00113         Comms.Poll();
00114 
00115         // Handle Comms Mode
00116         if ( Comms.Running() )
00117         {   // online comms
00118             if ( !AudioInput.Running() )
00119             {
00120                 printf( "Starting Processing\r\n" );
00121                 ADCBuffer.NCOPhaseInc( Comms.NCOPhaseInc() );
00122                 AudioInput.Start();
00123             }
00124             // process and output any received samples
00125             if ( !AudioInput.Empty() )
00126             {
00127                 // ADC buffer will be automatically released
00128                 AudioInput.Read( ADCBuffer );
00129                 // Mix the LO
00130                 ADCBuffer.MixLO();
00131                 // Filter the result
00132                 ADCBuffer.LPF();
00133                 // Output the data to the comms module
00134                 for ( int ii=0; ii<8; ii++ )
00135                     Comms.SendSamples( ADCBuffer.Timestamp(), ADCBuffer.FilteredOutput(ii) );
00136             }
00137         }
00138         else
00139         {   // offline comms
00140             if ( AudioInput.Running() )
00141             {
00142                 AudioInput.Stop();
00143                 printf( "Stopping Processing\r\n" );
00144             }
00145             if ( !AudioInput.Empty() )
00146             {   // discard messages
00147                 AudioInput.Read( ADCBuffer );
00148                 ADCBuffer.Release();
00149             }
00150         }
00151 
00152         // Handle Test Modes
00153         if ( Comms.TestMode()!=uiCurrentTestmode )
00154         {
00155             uiCurrentTestmode = Comms.TestMode();
00156             if ( uiCurrentTestmode!=0 )
00157             {   // enable test Osc
00158                 printf( "Turn ON Test Osc\r\n" );
00159                 TestOscillator = TESTOSC_ON;
00160             }
00161             else
00162             {   // disable test Osc
00163                 printf( "Turn OFF Test Osc\r\n" );
00164                 TestOscillator = TESTOSC_OFF;
00165             }
00166         }
00167 
00168         // Process Keystrokes - debug only
00169         if( pc.readable() )
00170         {
00171             int iCharIn = pc.getc();
00172             switch ( iCharIn )
00173             {
00174               case'1':
00175                 printf( "Turn on Test Osc\r\n" );
00176                 TestOscillator = TESTOSC_ON;
00177                 break;
00178               case '2':
00179                 printf( "Turn off Test Osc\r\n" );
00180                 TestOscillator = TESTOSC_OFF;
00181                 break;
00182               case '7':
00183                 printf( "AudioInput Start\r\n" );
00184                 AudioInput.Start();
00185                 break;
00186               case '8':
00187                 printf( "AudioInput Stop\r\n" );
00188                 AudioInput.Stop();
00189                 break;
00190               case '9':
00191                 AudioInput.Report();
00192                 break;
00193               case 'x':
00194                 ADCBuffer.NCOFrequency( 15000 );
00195                 break;
00196               case 'y':
00197                 ADCBuffer.NCOFrequency( -15000 );
00198                 break;
00199               case 'z':
00200                 ADCBuffer.NCOFrequency( 15600 );
00201                 break;
00202             }
00203         }
00204     }
00205         
00206 }
00207 
00208 //---------------------------------------------------------------------------
00209 //  END
00210 //---------------------------------------------------------------------------
00211 
00212