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fix(rtlsdr_wsprd.c): getops patch & filter fix

pull/70/head
Guenael 2021-12-11 01:17:13 -05:00
rodzic 277d32f0c5
commit 0418d4c8e1
1 zmienionych plików z 12 dodań i 14 usunięć
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rtlsdr_wsprd.c
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@ -93,10 +93,10 @@ static void rtlsdr_callback(unsigned char *samples, uint32_t samples_count, void
int8_t *sigIn = (int8_t *)samples;
uint32_t sigLenght = samples_count;
static uint32_t decimationIndex = 0;
uint32_t decimationIndex = 0;
/* CIC buffers */
static int32_t Ix1, Ix2, Qx1, Qx2;
static int32_t Ix1 = 0, Ix2 = 0, Qx1 = 0, Qx2 = 0;
static int32_t Iy1, It1y, It1z, Qy1, Qt1y, Qt1z;
static int32_t Iy2, It2y, It2z, Qy2, Qt2y, Qt2z;
@ -119,8 +119,6 @@ static void rtlsdr_callback(unsigned char *samples, uint32_t samples_count, void
/* FIR compensation filter buffers */
static float firI[32] = {0.0},
firQ[32] = {0.0};
static float Isum = 0.0,
Qsum = 0.0;
/* Convert unsigned to signed */
for (uint32_t i = 0; i < sigLenght; i++) {
@ -161,12 +159,12 @@ static void rtlsdr_callback(unsigned char *samples, uint32_t samples_count, void
*/
for (int32_t i = 0; i < sigLenght / 2; i++) {
/* Integrator stages (N=2) */
Ix1 += (int32_t)sigIn[i * 2];
Ix1 += (int32_t)sigIn[i * 2]; // FIXME: move sigIn in float here ?
Qx1 += (int32_t)sigIn[i * 2 + 1];
Ix2 += Ix1;
Qx2 += Qx1;
/* Decimation R=6400 */
/* Decimation stage */
decimationIndex++;
if (decimationIndex <= DOWNSAMPLING) {
continue;
@ -191,6 +189,7 @@ static void rtlsdr_callback(unsigned char *samples, uint32_t samples_count, void
// FIXME/TODO : could be made with int32_t (8 bits, 20 bits)
/* FIR compensation filter */
float Isum = 0.0, Qsum = 0.0;
for (uint32_t j = 0; j < 32; j++) {
Isum += firI[j] * zCoef[j];
Qsum += firQ[j] * zCoef[j];
@ -310,7 +309,8 @@ void printSpots(uint32_t n_results) {
void saveSample(float *iSamples, float *qSamples) {
if (rx_options.readfile == true) {
{
//if (rx_options.readfile == true) {
char filename[32];
time_t rawtime;
@ -700,7 +700,7 @@ int main(int argc, char **argv) {
if (argc <= 1)
usage();
while ((opt = getopt(argc, argv, "f:c:l:g:a:o:p:u:d:n:i:t:w:r:H:Q:S")) != -1) {
while ((opt = getopt(argc, argv, "f:c:l:g:ao:p:u:dn:i:tw:r:HQS")) != -1) {
switch (opt) {
case 'f': // Frequency
if (!strcasecmp(optarg, "LF")) {
@ -762,21 +762,19 @@ int main(int argc, char **argv) {
rx_options.gain *= 10;
break;
case 'a': // Auto gain
rx_options.autogain = atoi(optarg);
if (rx_options.autogain < 0) rx_options.autogain = 0;
if (rx_options.autogain > 1) rx_options.autogain = 1;
rx_options.autogain = 1;
break;
case 'o': // Fine frequency correction
rx_options.shift = atoi(optarg);
break;
case 'p':
case 'p': // Crystal correction
rx_options.ppm = atoi(optarg);
break;
case 'u': // Upconverter frequency
rx_options.upconverter = (uint32_t)atofs(optarg);
break;
case 'd': // Direct Sampling
rx_options.directsampling = (uint32_t)atofs(optarg);
rx_options.directsampling = 1;
break;
case 'n': // Stop after n iterations
rx_options.maxloop = (uint32_t)atofs(optarg);
@ -886,7 +884,7 @@ int main(int argc, char **argv) {
}
if (rx_options.directsampling) {
rtl_result = rtlsdr_set_direct_sampling(rtl_device, rx_options.directsampling);
rtl_result = rtlsdr_set_direct_sampling(rtl_device, 1);
if (rtl_result < 0) {
fprintf(stderr, "ERROR: Failed to set direct sampling\n");
rtlsdr_close(rtl_device);