From cd48b3f3ac08360d2db5a2e19d05d9191d4b2385 Mon Sep 17 00:00:00 2001
From: KubaPro010 <kuba.pro010@gmail.com>
Date: Wed, 27 Sep 2023 19:51:10 +0200
Subject: [PATCH] little changes, note: you need to mod your librpit

---
 src/pifmrds/fm_mpx.c      |  2 +-
 src/pifmrds/pi_fm_rds.cpp | 29 +++++++++++++++++++----------
 2 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/src/pifmrds/fm_mpx.c b/src/pifmrds/fm_mpx.c
index 9bc58b2..2435b93 100644
--- a/src/pifmrds/fm_mpx.c
+++ b/src/pifmrds/fm_mpx.c
@@ -312,7 +312,7 @@ int fm_mpx_get_samples(float *mpx_buffer, int drds) {
         }
         out_left= out_left/(left_max+compressor_max_gain_recip); // Adjust volume with limited maximum gain
 
-        if(drds) mpx_buffer[i] = 0;
+        if(drds) mpx_buffer[i] = 0; //do not remove this, the bandwidht will go nuts
  
         // Generate the stereo mpx
         if( channels > 1 ) {
diff --git a/src/pifmrds/pi_fm_rds.cpp b/src/pifmrds/pi_fm_rds.cpp
index 3979a0a..fcfdd23 100644
--- a/src/pifmrds/pi_fm_rds.cpp
+++ b/src/pifmrds/pi_fm_rds.cpp
@@ -126,7 +126,7 @@ int tx(uint32_t carrier_freq, char *audio_file, uint16_t pi, char *ps, char *rt,
     int varying_ps = 0;
 
     if(drds == 1) {
-        printf("RDS Disabled (control pipe too)\n");
+        printf("RDS Disabled\n");
     } else {
         if(ps) {
             set_rds_ps(ps);
@@ -146,15 +146,15 @@ int tx(uint32_t carrier_freq, char *audio_file, uint16_t pi, char *ps, char *rt,
             }
             printf("\n");
         }
+    }
 
-        // Initialize the control pipe reader
-        if(control_pipe) {
-            if(open_control_pipe(control_pipe, pad_reg) == 0) {
-                printf("Reading control commands on %s.\n", control_pipe);
-            } else {
-                printf("Failed to open control pipe: %s.\n", control_pipe);
-                control_pipe = NULL;
-            }
+    // Initialize the control pipe reader
+    if(control_pipe) {
+        if(open_control_pipe(control_pipe, pad_reg) == 0) {
+            printf("Reading control commands on %s.\n", control_pipe);
+        } else {
+            printf("Failed to open control pipe: %s.\n", control_pipe);
+            control_pipe = NULL;
         }
     }
     
@@ -218,6 +218,7 @@ int main(int argc, char **argv) {
     int ta = 0;
     int tp = 0;
     int af_size = 0;
+    int gpiopin = 0;
     int raw = 0;
     int drds = 0;
     int power = 7;
@@ -259,6 +260,14 @@ int main(int argc, char **argv) {
         } else if(strcmp("-pty", arg)==0 && param != NULL) {
             i++;
             pty = atoi(param);
+        } else if(strcmp("-gpiopin", arg)==0 && param != NULL) {
+            i++;
+            int pinnum = atoi(param);
+            if(!pinnum == 4 || !pinnum == 20 || !pinnum == 32 || !pinnum == 34 || !pinnum == 6) {
+                fatal("Invalid gpio pin, allowed: 4,20,32,34");
+            } else {
+                gpiopin = pinnum;
+            }
         } else if(strcmp("-ta", arg)==0) {
             i++;
             ta = 1;
@@ -326,7 +335,7 @@ int main(int argc, char **argv) {
     }
     alternative_freq[0] = af_size;
 	int FifoSize=DATA_SIZE*2;
-    fmmod=new ngfmdmasync(carrier_freq,228000,14,FifoSize);
+    fmmod=new ngfmdmasync(carrier_freq,228000,14,FifoSize, false, gpiopin);
     int errcode = tx(carrier_freq,  audio_file, pi, ps, rt, ppm, control_pipe, pty, alternative_freq, raw, drds, preemp, power, rawSampleRate, rawChannels, deviation, ta, tp);
     terminate(errcode);
 }