kopia lustrzana https://github.com/threeme3/usdx
Added sample-rate, CPU idle-time diagnostics.
guido
rodzic
4bf92bbdf6
commit
01e84bfb50
138
QCX-SSB.ino
138
QCX-SSB.ino
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@ -18,7 +18,6 @@ cw tx message/cw encoder
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32 bin fft
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dynamic range cw
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att extended agc
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profiling nsamples, cpu load idle in menu
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configurable F_CPU
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CW-R/CW-L offset
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VFO-A/B+split+RIT
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@ -455,20 +454,20 @@ public:
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static SI5351 si5351;
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#undef F_CPU
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#define F_CPU 20007000 // myqcx1:20008440, myqcx2:20006000 // Actual crystal frequency of 20MHz XTAL1
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#define F_CPU 20007000 // myqcx1:20008440, myqcx2:20006000 // Actual crystal frequency of 20MHz XTAL1, note that this declaration is just informative and does not correct the timing in Arduino functions like delay(); hence a 1.25 factor needs to be added for correction.
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#define DEBUG 1 // enable testing and diagnostics features
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#ifdef DEBUG
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static uint32_t sr = 0;
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static uint32_t cpu_load = 0;
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volatile uint16_t param_a = 0; // registers for debugging, testing and experimental purposes
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volatile int16_t param_b = 0;
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volatile int16_t param_c = 0;
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#endif
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enum mode_t { LSB, USB, CW, AM, FM };
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volatile int8_t mode = USB;
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//#define PROFILING 1
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#ifdef PROFILING
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volatile uint32_t numSamples = 0;
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#else
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volatile uint8_t numSamples = 0;
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#endif
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volatile uint16_t numSamples = 0;
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volatile uint8_t tx = 0;
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volatile bool vox = false;
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@ -510,7 +509,7 @@ inline int16_t arctan3(int16_t q, int16_t i) // error ~ 0.8 degree
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uint8_t lut[256];
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volatile uint8_t amp;
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volatile uint8_t vox_thresh = (1 << 2);
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volatile uint8_t drive = 4;
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volatile uint8_t drive = 2; // hmm.. drive>2 impacts cpu load..why?
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inline int16_t ssb(int16_t in)
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{
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@ -530,10 +529,8 @@ inline int16_t ssb(int16_t in)
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q = ((v[0] - v[14]) * 2 + (v[2] - v[12]) * 8 + (v[4] - v[10]) * 21 + (v[6] - v[8]) * 15) / 128 + (v[6] - v[8]) / 2; // Hilbert transform, 40dB side-band rejection in 400..1900Hz (@4kSPS) when used in image-rejection scenario; (Hilbert transform require 5 additional bits)
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uint16_t _amp = magn(i, q);
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//#define VOX_THRESHOLD (1 << (2)) // 2*6dB above ADC noise level
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// if(vox) _vox(_amp > VOX_THRESHOLD);
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if(vox) _vox(_amp > vox_thresh);
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//_amp = (_amp > vox_thresh) ? _amp : 0; // vox_thresh = 1 is a good setting
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_amp = _amp << (drive);
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#ifdef CONSTANT_AMP
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@ -577,7 +574,7 @@ void dsp_tx()
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int16_t adc = ADC - 512; // current ADC sample 10-bits analog input, NOTE: first ADCL, then ADCH
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int16_t df = ssb(adc >> MIC_ATTEN); // convert analog input into phase-shifts (carrier out by periodic frequency shifts)
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si5351.freq_calc_fast(df); // calculate SI5351 registers based on frequency shift and carrier frequency
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numSamples++;
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//if(OCR1BL == 0){ si5351.SendRegister(SI_CLK_OE, (amp) ? 0b11111011 : 0b11111111); } // experimental carrier-off for low amplitudes
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if(!mox) return;
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OCR1AL = (adc << (mox-1)) + 128; // TX audio monitoring
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@ -587,8 +584,10 @@ volatile int16_t p_sin = 0; // initialized with A*sin(t), where t=0
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volatile int16_t n_cos = 448; // initialized with A*cos(t), where t=0
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inline void process_minsky() // Minsky circle sample [source: https://www.cl.cam.ac.uk/~am21/hakmemc.html, ITEM 149]: p_sin+=n_cos*2*PI*f/fs; n_cos-=p_sin*2*PI*f/fs;
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{
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#ifdef DEBUG
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p_sin += (n_cos*64)/((uint8_t)param_c); // set param_c=79
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n_cos -= (p_sin*64)/((uint8_t)param_c);
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#endif
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}
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volatile uint16_t acc;
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@ -603,7 +602,7 @@ void dsp_tx_cw()
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int16_t adc = ADC - 512; // current ADC sample 10-bits analog input, NOTE: first ADCL, then ADCH
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int16_t df = ssb(adc >> MIC_ATTEN); // convert analog input into phase-shifts (carrier out by periodic frequency shifts)
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si5351.freq_calc_fast(df); // calculate SI5351 registers based on frequency shift and carrier frequency
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numSamples++;*/
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*/
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OCR1BL = lut[255];
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@ -612,7 +611,9 @@ void dsp_tx_cw()
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//process_minsky();
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//OCR1AL = (p_sin >> (16 - param_b)) + 128;
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#ifdef DEBUG
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acc = acc + param_c; // param_c = 7570
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#endif
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int8_t temp = acc >> 8;
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int8_t mask = temp >> 7;
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OCR1AL = temp ^ mask;
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@ -774,7 +775,7 @@ inline int16_t filt_var(int16_t v)
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int16_t zx0 = v;
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static int16_t za1,za2;
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if(filt < 4){
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if(filt < 4){ // for SSB filters
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// 1st Order (SR=8kHz) IIR in Direct Form I, 8x8:16
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static int16_t zz1,zz2;
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zx0=(29*(zx0-zz1)+50*za1)/64; //300-Hz
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@ -825,6 +826,7 @@ volatile uint8_t admux[3];
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volatile int16_t ocomb, i, q, qh;
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#undef R // Decimating 2nd Order CIC filter
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#define R 4 // Rate change from 62500/2 kSPS to 7812.5SPS, providing 12dB gain
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volatile uint8_t rx_state = 0;
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// Non-recursive CIC Filter (M=2, R=4) implementation, so two-stages of (followed by down-sampling with factor 2):
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// H1(z) = (1 + z^-1)^2 = 1 + 2*z^-1 + z^-2 = (1 + z^-2) + (2) * z^-1 = FA(z) + FB(z) * z^-1;
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@ -853,12 +855,12 @@ void sdr_rx()
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int16_t ac2;
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static int16_t z1;
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if(numSamples == 0 || numSamples == 4){ // 1st stage: down-sample by 2
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if(rx_state == 0 || rx_state == 4){ // 1st stage: down-sample by 2
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static int16_t za1;
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int16_t _ac = ac + za1 + z1; // 1st stage: FA + FB
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za1 = ac;
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static int16_t _z1;
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if(numSamples == 0){ // 2nd stage: down-sample by 2
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if(rx_state == 0){ // 2nd stage: down-sample by 2
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static int16_t _za1;
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ac2 = _ac + _za1 + _z1; // 2nd stage: FA + FB
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_za1 = _ac;
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@ -896,10 +898,10 @@ void sdr_rx()
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ac = ac >> (16-volume);
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if(nr) ac = process_nr(ac);
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if(mode == USB || mode == LSB){
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if(filt) ac = filt_var(ac << 0);
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if(filt) ac = filt_var(ac);
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}
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if(mode == CW){
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if(filt) ac = filt_var(ac << 6);
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if(filt) ac = filt_var(ac << 4) << 2; //if(filt) ac = filt_var(ac << 6);
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if(cwdec){ // CW decoder enabled?
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char ch = cw(ac >> 0);
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@ -933,7 +935,7 @@ void sdr_rx()
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} else _z1 = _ac * 2;
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} else z1 = ac * 2;
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numSamples++;
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rx_state++;
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}
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void sdr_rx_2()
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@ -953,12 +955,12 @@ void sdr_rx_2()
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int16_t ac2;
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static int16_t z1;
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if(numSamples == 3 || numSamples == 7){ // 1st stage: down-sample by 2
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if(rx_state == 3 || rx_state == 7){ // 1st stage: down-sample by 2
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static int16_t za1;
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int16_t _ac = ac + za1 + z1; // 1st stage: FA + FB
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za1 = ac;
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static int16_t _z1;
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if(numSamples == 7){ // 2nd stage: down-sample by 2
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if(rx_state == 7){ // 2nd stage: down-sample by 2
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static int16_t _za1;
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ac2 = _ac + _za1 + _z1; // 2nd stage: FA + FB
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_za1 = _ac;
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@ -971,14 +973,12 @@ void sdr_rx_2()
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q = v[7];
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qh = ((v[0] - v[14]) * 2 + (v[2] - v[12]) * 8 + (v[4] - v[10]) * 21 + (v[6] - v[8]) * 15) / 128 + (v[6] - v[8]) / 2; // Hilbert transform, 40dB side-band rejection in 400..1900Hz (@4kSPS) when used in image-rejection scenario; (Hilbert transform require 5 additional bits)
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}
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#ifndef PROFILING
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numSamples = 0; return;
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#endif
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rx_state = 0; return;
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} else _z1 = _ac * 2;
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} else z1 = ac * 2;
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numSamples++;
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rx_state++;
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}
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inline void sdr_rx_common()
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@ -990,18 +990,17 @@ inline void sdr_rx_common()
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ozi2 = ozi1 + ozi2; // Integrator section
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#endif
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ozi1 = ocomb + ozi1;
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#ifndef PROFILING
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#ifdef SECOND_ORDER_DUC
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if(volume) OCR1AL = min(max((ozi2>>5) + 128, 0), 255); //if(volume) OCR1AL = min(max((ozi2>>5) + ICR1L/2, 0), ICR1L); // center and clip wrt PWM working range
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#else
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if(volume) OCR1AL = min(max((ozi1>>5) + 128, 0), 255); //if(volume) OCR1AL = min(max((ozi2>>5) + ICR1L/2, 0), ICR1L); // center and clip wrt PWM working range
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#endif
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#endif
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}
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ISR(TIMER2_COMPA_vect) // Timer2 COMPA interrupt
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{
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func_ptr();
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numSamples++;
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}
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void adc_start(uint8_t adcpin, bool ref1v1, uint32_t fs)
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@ -1047,33 +1046,7 @@ void timer1_start(uint32_t fs)
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OCR1AL = 0x00; // OC1A (SIDETONE) PWM duty-cycle (span defined by ICR).
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OCR1BH = 0x00;
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OCR1BL = 0x00; // OC1B (KEY_OUT) PWM duty-cycle (span defined by ICR).
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#ifdef PROFILING
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// TIMER 1_COMPB with interrupt frequency 1.0000128001638422 Hz:
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cli(); // stop interrupts
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TCCR1A = 0; // set entire TCCR1A register to 0
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TCCR1B = 0; // same for TCCR1B
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TCNT1 = 0; // initialize counter value to 0
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// set compare match register for 1.0000128001638422 Hz increments
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OCR1A = 19530; // = 20000000 / (1024 * 1.0000128001638422) - 1 (must be <65536)
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// turn on CTC mode
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TCCR1B |= (1 << WGM12);
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// Set CS12, CS11 and CS10 bits for 1024 prescaler
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TCCR1B |= (1 << CS12) | (0 << CS11) | (1 << CS10);
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// enable timer compare interrupt
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TIMSK1 |= (1 << OCIE1A);
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sei(); // allow interrupts
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}
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static uint32_t prev = 0;
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ISR(TIMER1_COMPA_vect){
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uint32_t num = numSamples;
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uint32_t diff = num - prev;
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prev = num;
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lcd.setCursor(0, 0); lcd.print( diff ); lcd.print(F(" SPS "));
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}
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#else
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}
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#endif
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void timer1_stop()
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{
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@ -1432,7 +1405,7 @@ void calibrate_predistortion()
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void start_rx()
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{
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_init = 1;
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numSamples = 0;
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rx_state = 0;
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func_ptr = sdr_rx; //enable RX DSP/SDR
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adc_start(2, true, F_ADC_CONV); admux[2] = ADMUX;
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if(dsp_cap == SDR){
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@ -1455,7 +1428,7 @@ void switch_rxtx(uint8_t tx_enable){
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interrupts();
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if(tx_enable) ADMUX = admux[2];
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else _init = 1;
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numSamples = 0;
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rx_state = 0;
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if(tx_enable){
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digitalWrite(RX, LOW); // TX
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lcd.setCursor(15, 1); lcd.print("T");
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@ -1562,7 +1535,6 @@ void show_banner(){
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volatile uint8_t event;
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volatile uint8_t menumode = 0; // 0=not in menu, 1=selects menu item, 2=selects parameter value
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volatile int8_t menu = 0; // current parameter id selected in menu
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unsigned long schedule_time = 0;
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#define pgm_cache_item(addr, sz) byte _item[sz]; memcpy_P(_item, addr, sz); // copy array item from PROGMEM to SRAM
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#define get_version_id() ((VERSION[0]-'1') * 2048 + ((VERSION[2]-'0')*10 + (VERSION[3]-'0')) * 32 + ((VERSION[4]) ? (VERSION[4] - 'a' + 1) : 0) * 1) // converts VERSION string with (fixed) format "9.99z" into uint16_t (max. values shown here, z may be removed)
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@ -1610,9 +1582,10 @@ template<typename T> void paramAction(uint8_t action, T& value, const __FlashStr
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break;
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}
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}
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uint32_t schedule_time = 0;
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static uint8_t pwm_min = 0; // PWM value for which PA reaches its minimum: 29 when C31 installed; 0 when C31 removed; x for biasing BS170 directly
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static uint8_t pwm_max = 255; // PWM value for which PA reaches its maximum: 96 when C31 installed; 255 when C31 removed; x for biasing BS170 directly
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static uint8_t pwm_max = 192; // PWM value for which PA reaches its maximum: 96 when C31 installed; 255 when C31 removed; x for biasing BS170 directly
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const char* offon_label[2] = {"OFF", "ON"};
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const char* mode_label[5] = { "LSB", "USB", "CW ", "AM ", "FM " };
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@ -1621,10 +1594,10 @@ const char* band_label[N_BANDS] = { "80m", "60m", "40m", "30m", "20m", "17m", "1
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#define _N(a) sizeof(a)/sizeof(a[0])
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#define N_PARAMS 21 // number of (visible) parameters
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#define N_PARAMS 23 // number of (visible) parameters
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#define N_ALL_PARAMS (N_PARAMS+2) // number of parameters
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enum params_t {ALL, VOLUME, MODE, FILTER, BAND, STEP, AGC, NR, ATT, ATT2, SMETER, CWDEC, VOX, VOXGAIN, MOX, DRIVE, SIFXTAL, PWM_MIN, PWM_MAX, PARAM_A, PARAM_B, PARAM_C, FREQ, VERS};
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enum params_t {ALL, VOLUME, MODE, FILTER, BAND, STEP, AGC, NR, ATT, ATT2, SMETER, CWDEC, VOX, VOXGAIN, MOX, DRIVE, SIFXTAL, PWM_MIN, PWM_MAX, SR, CPULOAD, PARAM_A, PARAM_B, PARAM_C, FREQ, VERS};
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void paramAction(uint8_t action, uint8_t id = ALL) // list of parameters
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{
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@ -1654,12 +1627,16 @@ void paramAction(uint8_t action, uint8_t id = ALL) // list of parameters
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case VOXGAIN: paramAction(action, vox_thresh, F("3.2"), F("VOX Level"), NULL, 0, 255, false); break;
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case MOX: paramAction(action, mox, F("3.3"), F("MOX"), NULL, 0, 4, false); break;
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case DRIVE: paramAction(action, drive, F("3.4"), F("TX Drive"), NULL, 0, 8, false); break;
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case SIFXTAL: paramAction(action, si5351.fxtal, F("9.1"), F("Ref freq"), NULL, 24000000, 28000000, false); break;
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case PWM_MIN: paramAction(action, pwm_min, F("9.2"), F("PA Bias min"), NULL, 0, 255, false); break;
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case PWM_MAX: paramAction(action, pwm_max, F("9.3"), F("PA Bias max"), NULL, 0, 255, false); break;
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case PARAM_A: paramAction(action, param_a, F("9.4"), F("Param A"), NULL, 0, 65535, false); break;
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case PARAM_B: paramAction(action, param_b, F("9.5"), F("Param B"), NULL, -32768, 32767, false); break;
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case PARAM_C: paramAction(action, param_c, F("9.6"), F("Param C"), NULL, -32768, 32767, false); break;
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case SIFXTAL: paramAction(action, si5351.fxtal, F("8.1"), F("Ref freq"), NULL, 24000000, 28000000, false); break;
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case PWM_MIN: paramAction(action, pwm_min, F("8.2"), F("PA Bias min"), NULL, 0, 255, false); break;
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case PWM_MAX: paramAction(action, pwm_max, F("8.3"), F("PA Bias max"), NULL, 0, 255, false); break;
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#ifdef DEBUG
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case SR: paramAction(action, sr, F("9.1"), F("Sample rate"), NULL, -2147483648, 2147483647, false); break;
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case CPULOAD: paramAction(action, cpu_load, F("9.2"), F("CPU load %"), NULL, -2147483648, 2147483647, false); break;
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case PARAM_A: paramAction(action, param_a, F("9.3"), F("Param A"), NULL, 0, 65535, false); break;
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case PARAM_B: paramAction(action, param_b, F("9.4"), F("Param B"), NULL, -32768, 32767, false); break;
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case PARAM_C: paramAction(action, param_c, F("9.5"), F("Param C"), NULL, -32768, 32767, false); break;
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#endif
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// Invisible parameters
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case FREQ: paramAction(action, freq, NULL, NULL, NULL, 0, 0, false); break;
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case VERS: paramAction(action, eeprom_version, NULL, NULL, NULL, 0, 0, false); break;
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@ -1688,12 +1665,11 @@ void initPins(){
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pinMode(AUDIO2, INPUT);
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}
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#define SAFE 1
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void setup()
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{
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#ifdef SAFE
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#ifdef DEBUG
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// Benchmark dsp_tx() ISR (this needs to be done in beginning of setup() otherwise when VERSION containts 5 chars, mis-alignment impact performance by a few percent)
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numSamples = 0;
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rx_state = 0;
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uint32_t t0, t1;
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func_ptr = dsp_tx;
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t0 = micros();
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@ -1703,7 +1679,7 @@ void setup()
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float load_tx = (t1 - t0) * F_SAMP_TX * 100.0 / 1000000.0;
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// benchmark sdr_rx() ISR
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func_ptr = sdr_rx;
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numSamples = 8;
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rx_state = 8;
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float load_rx[8];
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float load_rx_avg = 0;
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uint16_t i;
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||||
|
|
@ -1718,10 +1694,9 @@ void setup()
|
|||
load_rx_avg /= 8;
|
||||
|
||||
//adc_stop(); // recover general ADC settings so that analogRead is working again
|
||||
ADMUX = (1 << REFS0); // restore reference voltage AREF (5V)
|
||||
|
||||
wdt_enable(WDTO_4S); // Enable watchdog, resolves QCX startup issue
|
||||
#endif
|
||||
ADMUX = (1 << REFS0); // restore reference voltage AREF (5V)
|
||||
wdt_enable(WDTO_4S); // Enable watchdog, resolves QCX startup issue and other issues (bugs)
|
||||
|
||||
// disable external interrupts
|
||||
PCICR = 0;
|
||||
|
|
@ -1767,7 +1742,7 @@ void setup()
|
|||
show_banner();
|
||||
lcd.setCursor(7, 0); lcd.print(F(" R")); lcd.print(F(VERSION)); lcd_blanks();
|
||||
|
||||
#ifdef SAFE
|
||||
#ifdef DEBUG
|
||||
// Measure CPU loads
|
||||
if(!(load_tx <= 100.0))
|
||||
{
|
||||
|
|
@ -1860,6 +1835,8 @@ void setup()
|
|||
}
|
||||
#endif
|
||||
|
||||
drive = 4; // Init settings
|
||||
|
||||
// Load parameters from EEPROM, reset to factory defaults when stored values are from a different version
|
||||
paramAction(LOAD, VERS);
|
||||
if(eeprom_version == get_version_id()){ // version signature in EEPROM corresponds with this firmware?
|
||||
|
|
@ -2095,6 +2072,19 @@ void loop()
|
|||
for(uint16_t i = 0; i != 256; i++) // refresh LUT based on pwm_min, pwm_max
|
||||
lut[i] = (float)i / ((float)255 / ((float)pwm_max - (float)pwm_min)) + pwm_min;
|
||||
}
|
||||
#ifdef DEBUG
|
||||
if(menu == SR){ // measure sample-rate
|
||||
numSamples = 0;
|
||||
delay(500 * 1.25); // delay 0.5s (in reality because F_CPU=20M instead of 16M, delay() is running 1.25x faster therefore we need to multiply wqith 1.25)
|
||||
sr = numSamples * 2; // samples per second */
|
||||
}
|
||||
if(menu == CPULOAD){ // measure CPU-load
|
||||
uint32_t i = 0;
|
||||
uint32_t prev_time = millis();
|
||||
for(i = 0; i != 300000; i++) wdt_reset(); // fixed CPU-load 132052*1.25us delay under 0% load condition; is 132052*1.25 * 20M = 3301300 CPU cycles fixed load
|
||||
cpu_load = 100 - 132 * 100 / (millis() - prev_time);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
14
README.md
14
README.md
|
|
@ -117,12 +117,14 @@ Currently, the following functions have been assigned to buttons and menu-items:
|
|||
| 3.2 VOX Level | Audio threshold of VOX (0-255) | |
|
||||
| 3.3 MOX | Monitor on Xmit (audio unmuted during transmit) | |
|
||||
| 3.4 TX Drive | Transmit audio gain (0-8) in steps of 6dB, 8=constant amplitude for SSB | |
|
||||
| 9.1 Ref freq | Actual si5351 crystal frequency, used for frequency-calibration | |
|
||||
| 9.2 PA Bias min | KEY_OUT PWM level (0-255) for representing 0% RF output | |
|
||||
| 9.3 PA Bias max | KEY_OUT PWM level (0-255) for representing 100% RF output | |
|
||||
| 9.4 Param A | for debugging, testing and experimental purpose | |
|
||||
| 9.5 Param B | for debugging, testing and experimental purpose | |
|
||||
| 9.6 Param C | for debugging, testing and experimental purpose | |
|
||||
| 8.1 Ref freq | Actual si5351 crystal frequency, used for frequency-calibration | |
|
||||
| 8.2 PA Bias min | KEY_OUT PWM level (0-255) for representing 0% RF output | |
|
||||
| 8.3 PA Bias max | KEY_OUT PWM level (0-255) for representing 100% RF output | |
|
||||
| 9.1 Sample rate | for debugging, testing and experimental purpose | |
|
||||
| 9.2 CPU load | for debugging, testing and experimental purpose | |
|
||||
| 9.3 Param A | for debugging, testing and experimental purpose | |
|
||||
| 9.4 Param B | for debugging, testing and experimental purpose | |
|
||||
| 9.5 Param C | for debugging, testing and experimental purpose | |
|
||||
|
||||
|
||||
|
||||
|
|
|
|||
Ładowanie…
Reference in New Issue