/** Signal generator main */
int main(int argc, char *argv[])
{
g_argv0 = argv[0];
if ( argc < 4 ) {
usage();
return -1;
}
/* Channel argument parsing */
uint32_t ch = atoi(argv[1]) - 1; /* Zero based internally */
if (ch > 1) {
fprintf(stderr, "Invalid channel: %s\n", argv[1]);
usage();
return -1;
}
/* Signal amplitude argument parsing */
double ampl = strtod(argv[2], NULL);
if ( (ampl < 0.0) || (ampl > c_max_amplitude) ) {
fprintf(stderr, "Invalid amplitude: %s\n", argv[2]);
usage();
return -1;
}
/* Signal frequency argument parsing */
double freq = strtod(argv[3], NULL);
/* Signal type argument parsing */
signal_e type = eSignalSine;
if (argc > 4) {
if ( strcmp(argv[4], "sine") == 0) {
type = eSignalSine;
} else if ( strcmp(argv[4], "sqr") == 0) {
type = eSignalSquare;
} else if ( strcmp(argv[4], "tri") == 0) {
type = eSignalTriangle;
} else {
fprintf(stderr, "Invalid signal type: %s\n", argv[4]);
usage();
return -1;
}
}
/* Check frequency limits */
if ( (freq < c_min_frequency) || (freq > c_max_frequency ) ) {
fprintf(stderr, "Invalid frequency: %s\n", argv[3]);
usage();
return -1;
}
awg_param_t params;
/* Prepare data buffer (calculate from input arguments) */
synthesize_signal(ampl, freq, type, data, ¶ms);
/* Write the data to the FPGA and set FPGA AWG state machine */
write_data_fpga(ch, data, ¶ms);
}
/** Signal generator main */
int main(int argc, char *argv[])
{
g_argv0 = argv[0];
if ( argc < 4 ) {
usage();
return -1;
}
/* Channel argument parsing */
uint32_t ch = atoi(argv[1]) - 1; /* Zero based internally */
if (ch > 1) {
fprintf(stderr, "Invalid channel: %s\n", argv[1]);
usage();
return -1;
}
/* Signal amplitude argument parsing */
float ampl = strtod(argv[2], NULL);
if ( (ampl < 0.0) || (ampl > c_max_amplitude) ) {
fprintf(stderr, "Invalid amplitude: %s\n", argv[2]);
usage();
return -1;
}
/* Signal frequency argument parsing */
float freq = strtod(argv[3], NULL);
if ( (freq < 0.0) || (freq > c_max_frequency ) ) {
fprintf(stderr, "Invalid frequency: %s\n", argv[3]);
usage();
return -1;
}
/* Signal type argument parsing */
awg_signal_t type = eSignalSine;
if (argc > 4) {
if ( strcmp(argv[4], "sine") == 0) {
type = eSignalSine;
} else if ( strcmp(argv[4], "sqr") == 0) {
type = eSignalSquare;
} else if ( strcmp(argv[4], "tri") == 0) {
type = eSignalTriangle;
} else {
fprintf(stderr, "Invalid signal type: %s\n", argv[4]);
usage();
return -1;
}
}
//Added by Marko
float offsetVolts = 0.0;
if(argc > 5){
offsetVolts = strtod(argv[5], NULL);
//fprintf(stderr, "Using offset: %f\n", offsetVolts);
}
rp_default_calib_params(&rp_calib_params);
gen_calib_params = &rp_calib_params;
if(rp_read_calib_params(gen_calib_params) < 0) {
fprintf(stderr, "rp_read_calib_params() failed, using default"
" parameters\n");
}
ch1_max_dac_v = fpga_awg_calc_dac_max_v(gen_calib_params->be_ch1_fs);
ch2_max_dac_v = fpga_awg_calc_dac_max_v(gen_calib_params->be_ch2_fs);
awg_param_t params;
/* Prepare data buffer (calculate from input arguments) */
synthesize_signal(ampl,//Amplitude
freq,//Frequency
(ch == 0) ? gen_calib_params->be_ch1_dc_offs : gen_calib_params->be_ch2_dc_offs,//Calibrated Instrument DC offset
(ch == 0) ? gen_calib_params->be_ch1_fs : gen_calib_params->be_ch2_fs,//Calibrated Back-End full scale coefficient
(ch == 0) ? ch1_max_dac_v : ch2_max_dac_v,//Maximum DAC voltage
offsetVolts,//DC offset voltage
type,//Signal type/shape
data,//Returned synthesized AWG data vector
¶ms);//Returned AWG parameters
/* Write the data to the FPGA and set FPGA AWG state machine */
write_data_fpga(ch, data, ¶ms);
}
/**
* @brief Update Arbitrary Signal Generator module towards actual settings.
*
* A function is intended to be called whenever one of the following settings on each channel
* is modified
* - enable
* - signal type
* - amplitude
* - frequency
* - DC offset
* - trigger mode
*
* @param[in] params Pointer to overall configuration parameters
* @retval -1 failure, error message is repoted on standard error device
* @retval 0 succesful update
*/
int generate_update(rp_app_params_t *params)
{
awg_param_t ch1_param, ch2_param;
awg_signal_t ch1_type;
awg_signal_t ch2_type;
int ch1_enable = params[GEN_ENABLE_CH1].value;
int ch2_enable = params[GEN_ENABLE_CH2].value;
//float time_vect[AWG_SIG_LEN], ch1_amp[AWG_SIG_LEN], ch2_amp[AWG_SIG_LEN];
float ch1_arb[AWG_SIG_LEN];
float ch2_arb[AWG_SIG_LEN];
int wrap;
//int invalid_file=0;
int in_smpl_len1 = 0;
int in_smpl_len2 = 0;
ch1_type = (awg_signal_t)params[GEN_SIG_TYPE_CH1].value;
ch2_type = (awg_signal_t)params[GEN_SIG_TYPE_CH2].value;
if( (ch1_type == eSignalFile) || (params[GEN_AWG_REFRESH].value == 1) ) {
if((in_smpl_len1 = read_in_file(1, ch1_arb)) < 0) {
// Invalid file
params[GEN_ENABLE_CH1].value = 0;
params[GEN_SIG_TYPE_CH1].value = eSignalSine;
ch1_type = params[GEN_SIG_TYPE_CH1].value;
ch1_enable = params[GEN_ENABLE_CH1].value;
//invalid_file=1;
}
}
if( (ch2_type == eSignalFile) || (params[GEN_AWG_REFRESH].value == 2) ) {
if((in_smpl_len2 = read_in_file(2, ch2_arb)) < 0) {
// Invalid file
params[GEN_ENABLE_CH2].value = 0;
params[GEN_SIG_TYPE_CH2].value = eSignalSine;
ch2_type = params[GEN_SIG_TYPE_CH2].value;
ch2_enable = params[GEN_ENABLE_CH2].value;
// invalid_file=1;
}
}
params[GEN_AWG_REFRESH].value = 0;
/* Waveform from signal gets treated differently then others */
if(ch1_enable > 0) {
if(ch1_type < eSignalFile) {
synthesize_signal(params[GEN_SIG_AMP_CH1].value,
params[GEN_SIG_FREQ_CH1].value,
gen_calib_params->be_ch1_dc_offs,
gen_calib_params->be_ch1_fs,
ch1_max_dac_v,
params[GEN_SIG_DCOFF_CH1].value,
ch1_type, ch1_data, &ch1_param);
wrap = 0; // whole buffer used
} else {
/* Signal file */
calculate_data(ch1_arb, in_smpl_len1,
params[GEN_SIG_AMP_CH1].value, params[GEN_SIG_FREQ_CH1].value,
gen_calib_params->be_ch1_dc_offs,
gen_calib_params->be_ch1_fs,
ch1_max_dac_v, params[GEN_SIG_DCOFF_CH1].value,
ch1_data, &ch1_param);
wrap = 0;
if (in_smpl_len1<AWG_SIG_LEN)
wrap = 1; // wrapping after (in_smpl_lenx) samples
}
} else {
clear_signal(gen_calib_params->be_ch1_dc_offs, ch1_data, &ch1_param);
}
write_data_fpga(0, params[GEN_TRIG_MODE_CH1].value,
params[GEN_SINGLE_CH1].value,
ch1_data, &ch1_param, wrap);
/* Waveform from signal gets treated differently then others */
if(ch2_enable > 0) {
if(ch2_type < eSignalFile) {
synthesize_signal(params[GEN_SIG_AMP_CH2].value,
params[GEN_SIG_FREQ_CH2].value,
gen_calib_params->be_ch2_dc_offs,
gen_calib_params->be_ch2_fs,
ch2_max_dac_v,
params[GEN_SIG_DCOFF_CH2].value,
ch2_type, ch2_data, &ch2_param);
wrap = 0; // whole buffer used
} else {
/* Signal file */
calculate_data(ch2_arb, in_smpl_len2,
params[GEN_SIG_AMP_CH2].value, params[GEN_SIG_FREQ_CH2].value,
gen_calib_params->be_ch2_dc_offs,
gen_calib_params->be_ch2_fs,
ch2_max_dac_v, params[GEN_SIG_DCOFF_CH2].value,
ch2_data, &ch2_param);
wrap = 0;
if (in_smpl_len2<AWG_SIG_LEN)
wrap = 1; // wrapping after (in_smpl_lenx) samples
}
} else {
clear_signal(gen_calib_params->be_ch2_dc_offs, ch2_data, &ch2_param);
}
write_data_fpga(1, params[GEN_TRIG_MODE_CH2].value,
params[GEN_SINGLE_CH2].value,
ch2_data, &ch2_param, wrap);
/* Always return singles to 0 */
params[GEN_SINGLE_CH1].value = 0;
params[GEN_SINGLE_CH2].value = 0;
//if (invalid_file==1)
// return -1; // Use this return value to notify the GUI user about invalid file.
return 0;
}
void *rp_spectr_worker_thread(void *args)
{
rp_spectr_worker_state_t old_state, state;
rp_app_params_t curr_params[PARAMS_NUM];
int fpga_update = 1;
int params_dirty = 1;
// TODO: Name these
int jj_state = 0;
int iix, iix2;
int cal_butt1_old, cal_butt2_old;
int start_state = 1;
awg_param_t awg_par;
pthread_mutex_lock(&rp_spectr_ctrl_mutex);
old_state = state = rp_spectr_ctrl;
pthread_mutex_unlock(&rp_spectr_ctrl_mutex);
while(1) {
/* update states - we save also old state to see if we need to reset
* FPGA
*/
old_state = state;
pthread_mutex_lock(&rp_spectr_ctrl_mutex);
state = rp_spectr_ctrl;
if(rp_spectr_params_dirty) {
memcpy(&curr_params, &rp_spectr_params,
sizeof(rp_app_params_t)*PARAMS_NUM);
fpga_update = rp_spectr_params_fpga_update;
rp_spectr_params_dirty = 0;
}
pthread_mutex_unlock(&rp_spectr_ctrl_mutex);
/* request to stop worker thread, we will shut down */
if(state == rp_spectr_quit_state) {
return 0;
}
if(fpga_update) {
spectr_fpga_reset();
//cal_ready1 = 0; // Resets calibration
//cal_ready2 = 0; // Resets calibration
jj_state = 0;
if(spectr_fpga_update_params(0, 0, 0, 0, 0,
(int)curr_params[FREQ_RANGE_PARAM].value, 0) < 0) {
rp_spectr_worker_change_state(rp_spectr_auto_state);
}
fpga_update = 0;
}
if(state == rp_spectr_idle_state) {
usleep(10000);
continue;
}
/* Prepare AWG data buffer */
// Buffer prepared only once in order to save CPU resources
if (synth_ready == 0) {
// Before preparing buffer visualize some constant signal
rp_resp_init_sigs(&rp_tmp_signals[0], (float **)&rp_tmp_signals[1], (float **)&rp_tmp_signals[2]);
rp_spectr_set_signals(rp_tmp_signals);
for (iix2 = 0; iix2 < JJ; iix2++) {
synthesize_fra_sig(dacamp, iix2*II*kstp, kstp, II, ch1_data, iix2*NN, &tmpdouble, &awg_par);
scale[iix2] = tmpdouble;
}
synth_ready = 1;
}
if (start_state == 0) {
if (round(curr_params[EN_CAL_1].value) != cal_butt1_old) {
cal_ready1 = 0;
}
if (round(curr_params[EN_CAL_2].value) != cal_butt2_old) {
cal_ready2 = 0;
}
} else {
start_state = 0;
// The calibration consists in coping the current response data to reference cal. vectors
for (iix = 0; iix < SPECTR_OUT_SIG_LEN; iix++) {
rp_cha_resp_cal[iix] = 56e6;
rp_chb_resp_cal[iix] = 56e6;
}
}
cal_butt1_old = round(curr_params[EN_CAL_1].value);
cal_butt2_old = round(curr_params[EN_CAL_2].value);
// TODO: Implement signal generator part as a separate module
/* Write the data to the FPGA and set FPGA AWG state machine for current pattern*/
write_data_fpga(0, 1, 0,
ch1_data, jj_state*NN,
&awg_par, round(65536 /
((float)spectr_fpga_cnv_freq_range_to_dec(curr_params[FREQ_RANGE_PARAM].value))));
write_data_fpga(1, 1, 0,
ch1_data, jj_state*NN,
&awg_par, round(65536 /
((float)spectr_fpga_cnv_freq_range_to_dec(curr_params[FREQ_RANGE_PARAM].value))));
/* Start the writing machine: DATA ACQUISITION */
spectr_fpga_arm_trigger();
usleep(10);
spectr_fpga_set_trigger(1);
/* start working */
pthread_mutex_lock(&rp_spectr_ctrl_mutex);
old_state = state = rp_spectr_ctrl;
pthread_mutex_unlock(&rp_spectr_ctrl_mutex);
if((state == rp_spectr_idle_state) || (state == rp_spectr_abort_state)) {
continue;
} else if(state == rp_spectr_quit_state) {
break;
}
/* polling until data is ready */
while(1) {
pthread_mutex_lock(&rp_spectr_ctrl_mutex);
state = rp_spectr_ctrl;
params_dirty = rp_spectr_params_dirty;
pthread_mutex_unlock(&rp_spectr_ctrl_mutex);
/* change in state, abort polling */
if((state != old_state) || params_dirty) {
break;
}
if(spectr_fpga_triggered()) {
break;
}
}
if((state != old_state) || params_dirty) {
params_dirty = 0;
continue;
}
/* retrieve data and process it*/
spectr_fpga_get_signal(&rp_cha_in, &rp_chb_in);
/* Calculate response at frequency components for each excitation pattern*/
rp_resp_calc(&rp_cha_in[0], &rp_chb_in[0], jj_state*II, scale[jj_state], kstp, II, (double **)&rp_cha_resp, (double **)&rp_chb_resp);
// Continue acquiring and processing until all the pattern sequence completed
if (jj_state < JJ) {
jj_state++;
} else {
// Response characterization completed
jj_state = 0;
/* Perform calibration at startup or parameter update.
* TODO: add a GUI Calibration button for individual channels
*/
if (cal_ready1 == 0)
{ // Provide calibration vector initialization since calibration
cal_ready1 = 1; // executed on demand
// The calibration consists in coping the current response data to reference cal. vectors
for (iix = 0; iix < SPECTR_OUT_SIG_LEN; iix++) {
rp_cha_resp_cal[iix] = rp_cha_resp[iix];
}
}
/* Perform calibration at startup or parameter update
* TODO: add a GUI Calibration button for individual channels
*/
if (cal_ready2 == 0)
{ // Provide calibration vector initialization since calibration
cal_ready2 = 1; // executed on demand
// The calibration consists in coping the current response data to reverence cal. vectors
for (iix = 0; iix < SPECTR_OUT_SIG_LEN; iix++) {
rp_chb_resp_cal[iix] = rp_chb_resp[iix];
}
}
// Calculate frequency vector for the frequencies where response measured
rp_resp_prepare_freq_vector(&rp_tmp_signals[0],
c_spectr_fpga_smpl_freq,
curr_params[FREQ_RANGE_PARAM].value, II, JJ, k1, kstp);
// Calculate frequency response in dB and implement calibration
rp_resp_cnv_to_dB(&rp_cha_resp[0], &rp_chb_resp[0],
&rp_cha_resp_cal[0], &rp_chb_resp_cal[0],
(float **)&rp_tmp_signals[1],
(float **)&rp_tmp_signals[2], II*JJ);
rp_spectr_set_signals(rp_tmp_signals);
usleep(10000);
}
}
return 0;
}