Clayton G / Mbed 2 deprecated QRSS_Rx

QRSS Rx Network receiver. A receiver to sample a segment of RF spectrum and send this data to a server for further processing and display. NXP mbed Design Challenge entry (Honorable Mention). Published in Circuit Cellar, Feb 2012

Dependencies:   NetServices mbed DNSResolver

DSP.h@0:82ff15078322, 2012-01-25 (annotated)

Committer:
claytong
Date:
Wed Jan 25 20:32:53 2012 +0000
Revision:
0:82ff15078322
1.0 (initial public release)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
claytong 0:82ff15078322 1 /*---------------------------------------------------------------------------
claytong 0:82ff15078322 2
claytong 0:82ff15078322 3 QRSS Receiver Application
claytong 0:82ff15078322 4
claytong 0:82ff15078322 5 by Clayton ZL3TKA/VK1TKA
claytong 0:82ff15078322 6 clayton@isnotcrazy.com
claytong 0:82ff15078322 7
claytong 0:82ff15078322 8 Header File for DSP Processing class
claytong 0:82ff15078322 9
claytong 0:82ff15078322 10 ---------------------------------------------------------------------------*/
claytong 0:82ff15078322 11 #ifndef _DSP_H
claytong 0:82ff15078322 12 #define _DSP_H
claytong 0:82ff15078322 13
claytong 0:82ff15078322 14 #include "mbed.h"
claytong 0:82ff15078322 15 #include "BufferSys.h"
claytong 0:82ff15078322 16
claytong 0:82ff15078322 17 // Definitions
claytong 0:82ff15078322 18
claytong 0:82ff15078322 19 // Macros
claytong 0:82ff15078322 20
claytong 0:82ff15078322 21 //
claytong 0:82ff15078322 22 // Classes
claytong 0:82ff15078322 23 //
claytong 0:82ff15078322 24
claytong 0:82ff15078322 25 //---------------------------------------------------------------------------
claytong 0:82ff15078322 26 //
claytong 0:82ff15078322 27 // DSP Processor Class - based on a buffer handle. Processes the attached samples buffer
claytong 0:82ff15078322 28 //
claytong 0:82ff15078322 29 class TDSPProcessor : public TBufferHandle
claytong 0:82ff15078322 30 {
claytong 0:82ff15078322 31
claytong 0:82ff15078322 32 // parameters
claytong 0:82ff15078322 33 public:
claytong 0:82ff15078322 34 // Set NCO phase inc
claytong 0:82ff15078322 35 // Set inc directly
claytong 0:82ff15078322 36 void NCOPhaseInc( uint32_t uiPhaseInc )
claytong 0:82ff15078322 37 { uiMixerPhaseIncrement = uiPhaseInc; }
claytong 0:82ff15078322 38 // Set inc from a frequency
claytong 0:82ff15078322 39 void NCOFrequency( int32_t iFreq );
claytong 0:82ff15078322 40
claytong 0:82ff15078322 41 // results
claytong 0:82ff15078322 42 public:
claytong 0:82ff15078322 43 // get filtered output data
claytong 0:82ff15078322 44 const TDataSample FilteredOutput( int iIndex ) const
claytong 0:82ff15078322 45 {
claytong 0:82ff15078322 46 if ( !HasBuffer() || (iIndex<0) || (iIndex>=LPF_OUTPUTS_SIZE) )
claytong 0:82ff15078322 47 return NullSample; // return empty sample
claytong 0:82ff15078322 48 return asLPFOutputs[iIndex];
claytong 0:82ff15078322 49 }
claytong 0:82ff15078322 50
claytong 0:82ff15078322 51 // processing operations
claytong 0:82ff15078322 52 public:
claytong 0:82ff15078322 53 // Reset processing
claytong 0:82ff15078322 54 void Reset();
claytong 0:82ff15078322 55
claytong 0:82ff15078322 56 // Mix samples with LO
claytong 0:82ff15078322 57 bool MixLO();
claytong 0:82ff15078322 58
claytong 0:82ff15078322 59 // LPF processing
claytong 0:82ff15078322 60 bool LPF();
claytong 0:82ff15078322 61
claytong 0:82ff15078322 62 // data
claytong 0:82ff15078322 63 protected:
claytong 0:82ff15078322 64 // NCO mixer
claytong 0:82ff15078322 65 uint32_t uiMixerPhaseAccumulator;
claytong 0:82ff15078322 66 uint32_t uiMixerPhaseIncrement;
claytong 0:82ff15078322 67
claytong 0:82ff15078322 68 // LPF outputs
claytong 0:82ff15078322 69 TDataSample asLPFOutputs[LPF_OUTPUTS_SIZE];
claytong 0:82ff15078322 70
claytong 0:82ff15078322 71 // LPF partial results (ready to complete with the next buffer)
claytong 0:82ff15078322 72 TLongDataSample asLPFPartials[LPF_OUTPUTS_SIZE];
claytong 0:82ff15078322 73
claytong 0:82ff15078322 74 // LPF Partials valid flag
claytong 0:82ff15078322 75 bool bLPFPartailsValid;
claytong 0:82ff15078322 76
claytong 0:82ff15078322 77 };
claytong 0:82ff15078322 78
claytong 0:82ff15078322 79 #endif
claytong 0:82ff15078322 80
claytong 0:82ff15078322 81 //---------------------------------------------------------------------------
claytong 0:82ff15078322 82 // END
claytong 0:82ff15078322 83 //---------------------------------------------------------------------------
claytong 0:82ff15078322 84