From b2311e5a967e09e5b293578bb596c83c50af536d Mon Sep 17 00:00:00 2001
From: drowe67 <david@rowetel.com>
Date: Sat, 4 May 2024 07:16:26 +0930
Subject: [PATCH] custom config debugging: dump ofdm config from a FreeDV API
 function

---
 src/freedv_api.c         | 4 ++++
 src/freedv_api.h         | 3 +++
 src/freedv_data_raw_tx.c | 5 +++++
 src/ofdm.c               | 5 +++++
 4 files changed, 17 insertions(+)

diff --git a/src/freedv_api.c b/src/freedv_api.c
index d04dd7c8..3c812cac 100644
--- a/src/freedv_api.c
+++ b/src/freedv_api.c
@@ -1626,3 +1626,7 @@ unsigned short freedv_gen_crc16(unsigned char *data_p, int length) {
 
   return crc;
 }
+
+void freedv_ofdm_print_info(struct freedv *freedv) {
+  ofdm_print_info(freedv->ofdm);
+}
diff --git a/src/freedv_api.h b/src/freedv_api.h
index 9f72c8f9..0ca80ce1 100644
--- a/src/freedv_api.h
+++ b/src/freedv_api.h
@@ -341,6 +341,9 @@ int freedv_get_bits_per_modem_frame(struct freedv *freedv);
 int freedv_get_sz_error_pattern(struct freedv *freedv);
 int freedv_get_protocol_bits(struct freedv *freedv);
 
+// dump OFDM modem config
+void freedv_ofdm_print_info(struct freedv *freedv);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/freedv_data_raw_tx.c b/src/freedv_data_raw_tx.c
index ce5da562..7fa1e842 100644
--- a/src/freedv_data_raw_tx.c
+++ b/src/freedv_data_raw_tx.c
@@ -278,8 +278,13 @@ int main(int argc, char *argv[]) {
     memcpy(ofdm_config.tx_uw, uw, sizeof(uw));
     memcpy(&ofdm_config.tx_uw[ofdm_config.nuwbits - sizeof(uw)], uw,
            sizeof(uw));
+    /* set up a trivial Tx band pass filter as a demo */
+    static float tx_bpf[] = {1.0, 1.0, 1.0};
+    ofdm_config.tx_bpf_proto = tx_bpf;
+    ofdm_config.tx_bpf_proto_n = 3;
     adv.config = (void *)&ofdm_config;
     freedv = freedv_open_advanced(mode, &adv);
+    freedv_ofdm_print_info(freedv);
   } else {
     freedv = freedv_open(mode);
   }
diff --git a/src/ofdm.c b/src/ofdm.c
index 8d7a6dfc..953179fe 100644
--- a/src/ofdm.c
+++ b/src/ofdm.c
@@ -2669,6 +2669,11 @@ void ofdm_print_info(struct OFDM *ofdm) {
           ofdm->phase_est_en ? "true" : "false");
   fprintf(stderr, "ofdm->tx_bpf_en = %s\n", ofdm->tx_bpf_en ? "true" : "false");
   fprintf(stderr, "ofdm->rx_bpf_en = %s\n", ofdm->rx_bpf_en ? "true" : "false");
+  fprintf(stderr, "ofdm->tx_bpf_proto_n = %d\n", ofdm->tx_bpf_proto_n);
+  fprintf(stderr, "ofdm->tx_bpf_proto:\n");
+  for (int i = 0; i < ofdm->tx_bpf_proto_n; i++)
+    fprintf(stderr, "%f\t", ofdm->tx_bpf_proto[i]);
+  fprintf(stderr, "\n");
   fprintf(stderr, "ofdm->dpsk_en = %s\n", ofdm->dpsk_en ? "true" : "false");
   fprintf(stderr, "ofdm->phase_est_bandwidth_mode = %s\n",
           phase_est_bandwidth_mode[ofdm->phase_est_bandwidth_mode]);