changing 2020A UW to something unique

Author: drowe67

CMakeLists.txt

@@ -783,7 +783,7 @@ if(LPCNET)
              COMMAND sh -c "cd ${CMAKE_CURRENT_BINARY_DIR}/src;
                             dd bs=32000 count=60 if=/dev/zero |
                             ./freedv_tx 2020A - - --testframes --clip 1 |
-                            ./ch - - --No -24 --mpp --fading_dir ../unittest |
+                            ./ch - - --No -24.5 --mpp --fading_dir ../unittest |
                             ./freedv_rx 2020A - /dev/null --testframes"
              )
 

src/freedv_2020.c

@@ -44,9 +44,11 @@ void freedv_2020x_open(struct freedv *f, int vq_type) {
     struct OFDM_CONFIG ofdm_config;
     switch (f->mode) {
     case FREEDV_MODE_2020:
-    case FREEDV_MODE_2020A:
         ofdm_init_mode("2020", &ofdm_config);
         break;
+    case FREEDV_MODE_2020A:
+        ofdm_init_mode("2020A", &ofdm_config);
+        break;
     case FREEDV_MODE_2020B:
         ofdm_init_mode("2020B", &ofdm_config);
         break;

src/ofdm_mode.c

@@ -10,6 +10,7 @@
 
 #include <assert.h>
 #include <string.h>
+#include <stdio.h>
 #include "codec2_ofdm.h"
 #include "ofdm_internal.h"
 
@@ -61,6 +62,11 @@ void ofdm_init_mode(char mode[], struct OFDM_CONFIG *config) {
     } else if ((strcmp(mode,"2020") == 0) || (strcmp(mode,"2020A") == 0)) {
          config->ts = 0.0205;  config->nc = 31; config->codename = "HRAb_396_504";
          config->tx_bpf_en = false; config->amp_scale = 167E3; config->clip_gain1 = 2.5; config->clip_gain2 = 0.8;
+         if (!strcmp(mode,"2020A")) {
+             uint8_t uw[] = {1,1,0,0,1,0,1,0,1,1};
+             memcpy(config->tx_uw, uw, sizeof(uw));
+             fprintf(stderr,"new UW ...\n");
+         }
     } else if (strcmp(mode,"2020B") == 0) {
          config->ts = 0.014;  config->tcp = 0.004; config->nc = 29; config->ns=5; config->codename = "HRA_56_56";
          config->txtbits = 4; config->nuwbits = 8*2; config->bad_uw_errors = 5;