From 5736514d3198abd891b1246da9b97bbadf1f6265 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Fri, 17 Mar 2023 21:31:28 -0400
Subject: [PATCH 01/29] add APRS_VHF, change freq, delay 30 sec, change lat/lon
 each time

---
 cubesatsim/cubesatsim.ino | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 9fcd7781..2b631732 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -74,6 +74,8 @@ MQTTClient client;
 
 #define PICO_W    // define if Pico W board.  Otherwise, compilation fail for Pico or runtime fail if compile as Pico W
 
+#define APRS_VHF
+
 byte green_led_counter = 0;
 char call[] = "AMSAT";   // put your callsign here
 
@@ -95,10 +97,12 @@ void setup() {
 	
   LittleFS.begin();
 //  LittleFS.format();	// only format if files of size 0 keep showing up
+#ifdef APRS_VHF	  
+   mode = AFSK;	// force to APRS	
+#else	
   read_mode();
+#endif
 	
-  // mode = BPSK;	// force to BPSK
-
   new_mode = mode;
 	
 //  pinMode(LED_BUILTIN, OUTPUT);	
@@ -348,6 +352,13 @@ void loop() {
     Serial.print("\nLoop time: ");	
     Serial.println(millis() - startSleep);
   }
+#ifdef APRS_VHF	  
+  sleep(25.0);	
+// update latitude and longitude
+  latitude = latitude + 0.01;	
+  longitude = longitude + 0.01;		
+  set_lat_lon();	
+#endif	
 }	
 
 bool TimerHandler1(struct repeating_timer *t) {
@@ -4932,7 +4943,12 @@ void program_radio() {
 //     mySerial.println("AT+DMOSETGROUP=0,434.9000,434.9000,0,8,0,0\r");  
 //     mySerial.println("AT+DMOSETGROUP=0,432.2510,432.2510,0,8,0,0\r");  
 //     mySerial.println("AT+DMOSETGROUP=0,432.2500,432.2500,0,8,0,0\r");  
+#ifdef APRS_VHF	  
+     mySerial.println("AT+DMOSETGROUP=0,144.4900,144.4900,0,8,0,0\r");    // can change to 144.39 for standard APRS	  
+#else
      mySerial.println("AT+DMOSETGROUP=0,434.9000,434.9000,0,8,0,0\r");  
+#endif	  
+
    sleep(0.5);	  
    mySerial.println("AT+DMOSETMIC=8,0\r");  // was 8
 	

From debbce4c7b1fa3b0a3dfb11b516d566e510ff22b Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Fri, 17 Mar 2023 21:36:10 -0400
Subject: [PATCH 02/29] 144.59 and no 30 second delay

---
 cubesatsim/cubesatsim.ino | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 2b631732..683bc276 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -353,7 +353,7 @@ void loop() {
     Serial.println(millis() - startSleep);
   }
 #ifdef APRS_VHF	  
-  sleep(25.0);	
+//  sleep(25.0);	
 // update latitude and longitude
   latitude = latitude + 0.01;	
   longitude = longitude + 0.01;		
@@ -4944,7 +4944,7 @@ void program_radio() {
 //     mySerial.println("AT+DMOSETGROUP=0,432.2510,432.2510,0,8,0,0\r");  
 //     mySerial.println("AT+DMOSETGROUP=0,432.2500,432.2500,0,8,0,0\r");  
 #ifdef APRS_VHF	  
-     mySerial.println("AT+DMOSETGROUP=0,144.4900,144.4900,0,8,0,0\r");    // can change to 144.39 for standard APRS	  
+     mySerial.println("AT+DMOSETGROUP=0,144.5900,144.5900,0,8,0,0\r");    // can change to 144.39 for standard APRS	  
 #else
      mySerial.println("AT+DMOSETGROUP=0,434.9000,434.9000,0,8,0,0\r");  
 #endif	  

From 14f22417aaf42066a28e3d847cb32237e1107d2b Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Fri, 17 Mar 2023 21:39:17 -0400
Subject: [PATCH 03/29] don't change lat/lon

---
 cubesatsim/cubesatsim.ino | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 683bc276..b87f482a 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -355,9 +355,9 @@ void loop() {
 #ifdef APRS_VHF	  
 //  sleep(25.0);	
 // update latitude and longitude
-  latitude = latitude + 0.01;	
-  longitude = longitude + 0.01;		
-  set_lat_lon();	
+//  latitude = latitude + 0.01;	
+//  longitude = longitude + 0.01;		
+//  set_lat_lon();	
 #endif	
 }	
 

From bcd7ad2fb7ffbb71f4ce496dd8163df9c439f9c6 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Fri, 17 Mar 2023 21:43:51 -0400
Subject: [PATCH 04/29] don't transmit CW if on APRS frequency

---
 cubesatsim/cubesatsim.ino | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index b87f482a..f1f02a88 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -184,8 +184,11 @@ void setup() {
 	
 //  setup_sstv();
   picosstvpp_begin(26);
+#ifdef APRS_VHF
+  camera_detected = false;
+#else	
   camera_detected = start_camera();	
-
+#endif
 //  start_pwm();
   program_radio();	
 	
@@ -4137,6 +4140,10 @@ void transmit_cw(int freq, float duration) {  // freq in Hz, duration in millise
 }
 
 void transmit_callsign(char *callsign) {
+	
+#ifdef APRS_VHF
+  return;  // don't transmit CW if on APRS frequency
+#endif
 		
   char de[] = " HI HI DE ";	
   char id[20];

From 3f51260f9716e7687eee8b3cdb5bf73dad541ef0 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Fri, 17 Mar 2023 21:51:15 -0400
Subject: [PATCH 05/29] change icon to balloon

---
 cubesatsim/cubesatsim.ino | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index f1f02a88..451d0147 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -4909,10 +4909,16 @@ void set_lat_lon() {
 // Serial.println("Setting lat and lon for APRS");	
   char lat_string[64];
   char lon_string[64];
-	  
+	
+#ifdef APRS_VHF	 
+  char sym_ovl_default = '/'; // Balloon
+  char sym_tab_default = 'O';  
+  char icon[] = "/O"; 	
+#else	
   char sym_ovl_default = '\\'; //'H';
   char sym_tab_default = 'S'; // 'a';
   char icon[] = "\\S"; //Ha";
+#endif	
 	  
 //      latitude = toAprsFormat(latitude);
 //      longitude = toAprsFormat(longitude);   

From f25028e4bd41b42e742d609da7793046997cd3c5 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Fri, 17 Mar 2023 21:56:39 -0400
Subject: [PATCH 06/29] only transmit sensor payload

---
 cubesatsim/cubesatsim.ino | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 451d0147..1b0ac56b 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -505,9 +505,12 @@ void send_aprs_packet() {
 
   char str[1000];
   char header_str[] = "hi hi ";
-  strcpy(str, header_str);	
+  strcpy(str, header_str);
+#ifndef APRS_VHG	
   strcpy(str, tlm_str);	// transmit full APRS packet
-//  strcat(str, payload_str);
+#else	
+  strcat(str, payload_str);  // transmit sensor payload
+#endif	
 //  print_string(str);
 //  Serial.println(strlen(str));	
 	

From 974ee12ecfb00782913522b4f34ae1c44dcb1580 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Fri, 17 Mar 2023 22:01:16 -0400
Subject: [PATCH 07/29] add 0.1 carrier at start and end

---
 cubesatsim/cubesatsim.ino | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 1b0ac56b..12e95240 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -506,10 +506,10 @@ void send_aprs_packet() {
   char str[1000];
   char header_str[] = "hi hi ";
   strcpy(str, header_str);
-#ifndef APRS_VHG	
-  strcpy(str, tlm_str);	// transmit full APRS packet
+#ifdef APRS_VHG	
+  strcat(str, payload_str);  // transmit sensor payload	
 #else	
-  strcat(str, payload_str);  // transmit sensor payload
+  strcpy(str, tlm_str);	// transmit full APRS packet
 #endif	
 //  print_string(str);
 //  Serial.println(strlen(str));	
@@ -519,8 +519,10 @@ void send_aprs_packet() {
   if (debug_mode)	
     Serial.println("Sending APRS packet!");
   transmit_on();
-  transmit_led(HIGH);	
+  transmit_led(HIGH);
+  sleep(0.1);	
   send_packet(_FIXPOS_STATUS, debug_mode);
+  sleep(0.1);		
   transmit_led(LOW);	
   transmit_off();		
 }

From 1055c42b7bbf8a3f284ec9f2ca777ad36df04320 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Sat, 18 Mar 2023 09:31:00 -0400
Subject: [PATCH 08/29] only send payload telem

---
 cubesatsim/cubesatsim.ino | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 12e95240..99a96ca2 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -356,7 +356,7 @@ void loop() {
     Serial.println(millis() - startSleep);
   }
 #ifdef APRS_VHF	  
-//  sleep(25.0);	
+  sleep(25.0);	
 // update latitude and longitude
 //  latitude = latitude + 0.01;	
 //  longitude = longitude + 0.01;		
@@ -506,7 +506,7 @@ void send_aprs_packet() {
   char str[1000];
   char header_str[] = "hi hi ";
   strcpy(str, header_str);
-#ifdef APRS_VHG	
+#ifdef APRS_VHF	
   strcat(str, payload_str);  // transmit sensor payload	
 #else	
   strcpy(str, tlm_str);	// transmit full APRS packet
@@ -4962,7 +4962,7 @@ void program_radio() {
 //     mySerial.println("AT+DMOSETGROUP=0,432.2510,432.2510,0,8,0,0\r");  
 //     mySerial.println("AT+DMOSETGROUP=0,432.2500,432.2500,0,8,0,0\r");  
 #ifdef APRS_VHF	  
-     mySerial.println("AT+DMOSETGROUP=0,144.5900,144.5900,0,8,0,0\r");    // can change to 144.39 for standard APRS	  
+     mySerial.println("AT+DMOSETGROUP=0,144.3900,144.3900,0,8,0,0\r");    // can change to 144.39 for standard APRS	  
 #else
      mySerial.println("AT+DMOSETGROUP=0,434.9000,434.9000,0,8,0,0\r");  
 #endif	  

From 9c84ae6e014d68638630c15e1c90c5d6b08118cf Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Sat, 18 Mar 2023 22:14:56 -0400
Subject: [PATCH 09/29] remove last 3 characters of payload telemetry

---
 cubesatsim/cubesatsim.ino | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 99a96ca2..3fa1ca77 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -507,7 +507,8 @@ void send_aprs_packet() {
   char header_str[] = "hi hi ";
   strcpy(str, header_str);
 #ifdef APRS_VHF	
-  strcat(str, payload_str);  // transmit sensor payload	
+  strcat(str, payload_str);  // transmit sensor payload
+  str[strlen(str) - 3] = 0;  // get rid of last 3 characters	
 #else	
   strcpy(str, tlm_str);	// transmit full APRS packet
 #endif	

From 5624cb532a7848703a166b4875a759f124f68c30 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Sat, 18 Mar 2023 22:28:32 -0400
Subject: [PATCH 10/29] 200ms of carrier before and after

---
 cubesatsim/cubesatsim.ino | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 3fa1ca77..1e6467c6 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -521,9 +521,9 @@ void send_aprs_packet() {
     Serial.println("Sending APRS packet!");
   transmit_on();
   transmit_led(HIGH);
-  sleep(0.1);	
+  sleep(0.2);	
   send_packet(_FIXPOS_STATUS, debug_mode);
-  sleep(0.1);		
+  sleep(0.2);		
   transmit_led(LOW);	
   transmit_off();		
 }

From 30bd1e368ca9743976ec1daf641a5fcbc88630ad Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Fri, 24 Mar 2023 18:33:57 -0400
Subject: [PATCH 11/29] check for input every 4 sec

---
 cubesatsim/cubesatsim.ino | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 1e6467c6..5a486dca 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -355,8 +355,12 @@ void loop() {
     Serial.print("\nLoop time: ");	
     Serial.println(millis() - startSleep);
   }
-#ifdef APRS_VHF	  
-  sleep(25.0);	
+#ifdef APRS_VHF	 
+  for (int i = 0; i < 5; i++) {	
+    sleep(4.0);	
+    get_input();
+  }
+	
 // update latitude and longitude
 //  latitude = latitude + 0.01;	
 //  longitude = longitude + 0.01;		

From a62aae8cccb7d33d77bdcbe6545bf4150e70a347 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Sat, 25 Mar 2023 23:00:35 -0400
Subject: [PATCH 12/29] remove setup with R

---
 cubesatsim/cubesatsim.ino | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 5a486dca..ee18701e 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -2876,7 +2876,7 @@ void read_payload()
       Serial1.println("OK");
       delay(100);
       first_read = true;
-      setup();
+//      setup();
     }
 
     if (result == '?')

From 49d6f78d359217e84b32129b16095fdc79cd3676 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Sat, 25 Mar 2023 23:06:12 -0400
Subject: [PATCH 13/29] removed other setup reset

---
 cubesatsim/cubesatsim.ino | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index ee18701e..28235c7b 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -3065,7 +3065,7 @@ void payload_OK_only()
       Serial1.println("OK");
       delay(100);
       first_read = true;
-      setup();
+//      setup();
     }
 
     if (result == '?')

From c890cac2422a3b1c79a58dfabe6bcb7e1b2ccf24 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Sat, 25 Mar 2023 23:08:04 -0400
Subject: [PATCH 14/29] print any char received from Pi Zero

---
 cubesatsim/cubesatsim.ino | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 28235c7b..e8c410df 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -3059,7 +3059,7 @@ void payload_OK_only()
  
     blink(50);
     char result = Serial1.read();
-    //    Serial1.println(result);
+    Serial1.println(result);
 
     if (result == 'R') {
       Serial1.println("OK");

From 30e83a11955033bab5ba1260426e6578e9fc4f7d Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Sat, 25 Mar 2023 23:13:52 -0400
Subject: [PATCH 15/29] change setup to start_payload

---
 cubesatsim/cubesatsim.ino | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index e8c410df..a6e036d6 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -2876,6 +2876,7 @@ void read_payload()
       Serial1.println("OK");
       delay(100);
       first_read = true;
+      start_payload();     
 //      setup();
     }
 
@@ -2982,13 +2983,14 @@ void payload_OK_only()
       Serial.println("OK");
       delay(100);
       first_time = true;
-      setup();
+//      setup();
     }
     else if (result == 'C') {
       Serial.println("Clearing stored gyro offsets in EEPROM\n");
       EEPROM.put(0, (float)0.0);
       first_time = true;
-      setup();
+      start_payload(); 	    
+//      setup();
     }
     if ((result == '?') || first_time == true)  // commented back in
     if (true)
@@ -3065,6 +3067,7 @@ void payload_OK_only()
       Serial1.println("OK");
       delay(100);
       first_read = true;
+      start_payload(); 	    
 //      setup();
     }
 

From 81d5d8e1b8b48571ad94dbdf4f4a432e00c8d222 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Sat, 25 Mar 2023 23:16:13 -0400
Subject: [PATCH 16/29] more start_payload

---
 cubesatsim/cubesatsim.ino | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index a6e036d6..2b26cbfe 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -2983,6 +2983,7 @@ void payload_OK_only()
       Serial.println("OK");
       delay(100);
       first_time = true;
+      start_payload();	    
 //      setup();
     }
     else if (result == 'C') {

From d09576bd23730e0bb3d78fbecd5253ae0ee9257f Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Sun, 26 Mar 2023 09:01:06 -0400
Subject: [PATCH 17/29] Set Serial1 to gpio 0 and 1

---
 cubesatsim/cubesatsim.ino | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 2b26cbfe..733bf47d 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -2606,6 +2606,11 @@ void print_string(char *string)
 
 void start_payload() {
 	
+   Serial1.setRX(1);
+   delay(100);
+   Serial1.setTX(0);
+   delay(100);	
+	
   Serial1.begin(115200);  // Pi UART faster speed
 
   Serial.println("Starting payload!");

From d6af2ad52605b450e60644721f0a3ac798330c93 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Thu, 6 Apr 2023 09:19:11 -0400
Subject: [PATCH 18/29] changed payload_OK_only to Serial2

---
 cubesatsim/cubesatsim.ino | 71 ++++++++++++++++++++++-----------------
 1 file changed, 40 insertions(+), 31 deletions(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 733bf47d..fc915953 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -2605,13 +2605,22 @@ void print_string(char *string)
 }
 
 void start_payload() {
+
+#ifdef APRS_VHF	  
+   Serial2.setRX(9);
+   delay(100);
+   Serial2.setTX(8);
+   delay(100);
+   Serial2.begin(115200);	
 	
+   Serial.println("Starting Serial2 for payload");	
+#else	
    Serial1.setRX(1);
    delay(100);
    Serial1.setTX(0);
-   delay(100);	
-	
+   delay(100);		
   Serial1.begin(115200);  // Pi UART faster speed
+#endif	
 
   Serial.println("Starting payload!");
   
@@ -3063,14 +3072,14 @@ void payload_OK_only()
    }    
   }
 
-  if (Serial1.available() > 0) {
+  if (Serial2.available() > 0) {
  
     blink(50);
-    char result = Serial1.read();
-    Serial1.println(result);
+    char result = Serial2.read();
+    Serial2.println(result);
 
     if (result == 'R') {
-      Serial1.println("OK");
+      Serial2.println("OK");
       delay(100);
       first_read = true;
       start_payload(); 	    
@@ -3080,42 +3089,42 @@ void payload_OK_only()
     if (result == '?')
     {
       if (bmePresent) {
-        Serial1.print("OK BME280 ");
-        Serial1.print(bme.readTemperature());
-        Serial1.print(" ");
-        Serial1.print(bme.readPressure() / 100.0F);
-        Serial1.print(" ");
-        Serial1.print(bme.readAltitude(SEALEVELPRESSURE_HPA));
-        Serial1.print(" ");
-        Serial1.print(bme.readHumidity());
+        Serial2.print("OK BME280 ");
+        Serial2.print(bme.readTemperature());
+        Serial2.print(" ");
+        Serial2.print(bme.readPressure() / 100.0F);
+        Serial2.print(" ");
+        Serial2.print(bme.readAltitude(SEALEVELPRESSURE_HPA));
+        Serial2.print(" ");
+        Serial2.print(bme.readHumidity());
       } else
       {
-        Serial1.print("OK BME280 0.0 0.0 0.0 0.0");
+        Serial2.print("OK BME280 0.0 0.0 0.0 0.0");
       }
       mpu6050.update();
 
-      Serial1.print(" MPU6050 ");
-      Serial1.print(mpu6050.getGyroX());
-      Serial1.print(" ");
-      Serial1.print(mpu6050.getGyroY());
-      Serial1.print(" ");
-      Serial1.print(mpu6050.getGyroZ());
+      Serial2.print(" MPU6050 ");
+      Serial2.print(mpu6050.getGyroX());
+      Serial2.print(" ");
+      Serial2.print(mpu6050.getGyroY());
+      Serial2.print(" ");
+      Serial2.print(mpu6050.getGyroZ());
 
-    Serial1.print(" ");
-    Serial1.print(mpu6050.getAccX());   
-    Serial1.print(" ");
-    Serial1.print(mpu6050.getAccY());   
-    Serial1.print(" ");
-    Serial1.print(mpu6050.getAccZ());   
+    Serial2.print(" ");
+    Serial2.print(mpu6050.getAccX());   
+    Serial2.print(" ");
+    Serial2.print(mpu6050.getAccY());   
+    Serial2.print(" ");
+    Serial2.print(mpu6050.getAccZ());   
 
     sensorValue = analogRead(TEMPERATURE_PIN);
     //Serial.println(sensorValue);  
     Temp = T1 + (sensorValue - R1) *((T2 - T1)/(R2 - R1));
 
-    Serial1.print(" XS ");
-    Serial1.print(Temp);   
-    Serial1.print(" ");
-    Serial1.println(Sensor2);              
+    Serial2.print(" XS ");
+    Serial2.print(Temp);   
+    Serial2.print(" ");
+    Serial2.println(Sensor2);              
      
     float rotation = sqrt(mpu6050.getGyroX()*mpu6050.getGyroX() + mpu6050.getGyroY()*mpu6050.getGyroY() + mpu6050.getGyroZ()*mpu6050.getGyroZ()); 
     float acceleration = sqrt(mpu6050.getAccX()*mpu6050.getAccX() + mpu6050.getAccY()*mpu6050.getAccY() + mpu6050.getAccZ()*mpu6050.getAccZ()); 

From 129d97230e1cede6970187e662ec6d9976df33f7 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Thu, 6 Apr 2023 09:36:52 -0400
Subject: [PATCH 19/29] print b on Serial2

---
 cubesatsim/cubesatsim.ino | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index fc915953..bbecd40e 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -3071,6 +3071,8 @@ void payload_OK_only()
     } 
    }    
   }
+	
+  Serial2.print("b");	
 
   if (Serial2.available() > 0) {
  

From bf5fb59231f19838e36ad781cc22b59c890f4d06 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Thu, 6 Apr 2023 09:40:37 -0400
Subject: [PATCH 20/29] try serial2 on gp 0 1

---
 cubesatsim/cubesatsim.ino | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index bbecd40e..410a78d6 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -2607,9 +2607,12 @@ void print_string(char *string)
 void start_payload() {
 
 #ifdef APRS_VHF	  
-   Serial2.setRX(9);
+// Serial2.setRX(9);	
+   Serial2.setRX(1);
    delay(100);
-   Serial2.setTX(8);
+// Serial2.setTX(8);
+   Serial2.setRX(0);
+  	
    delay(100);
    Serial2.begin(115200);	
 	

From ff09f9138cf87fca89ce163898a89271646f981f Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Thu, 6 Apr 2023 09:47:05 -0400
Subject: [PATCH 21/29] back to GP 8 and 9

---
 cubesatsim/cubesatsim.ino | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 410a78d6..69961bb5 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -2607,11 +2607,11 @@ void print_string(char *string)
 void start_payload() {
 
 #ifdef APRS_VHF	  
-// Serial2.setRX(9);	
-   Serial2.setRX(1);
+ Serial2.setRX(9);	
+//   Serial2.setRX(1);
    delay(100);
-// Serial2.setTX(8);
-   Serial2.setRX(0);
+ Serial2.setTX(8);
+//   Serial2.setRX(0);
   	
    delay(100);
    Serial2.begin(115200);	

From 84a8b72e5acdb87de29767d3513d4031c894720d Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Thu, 6 Apr 2023 09:53:38 -0400
Subject: [PATCH 22/29] print received Serial2 char in Serial

---
 cubesatsim/cubesatsim.ino | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 69961bb5..b54e26be 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -3081,8 +3081,8 @@ void payload_OK_only()
  
     blink(50);
     char result = Serial2.read();
-    Serial2.println(result);
-
+//    Serial2.println(result);
+    Serial1.println(result);
     if (result == 'R') {
       Serial2.println("OK");
       delay(100);

From ed03523061ff4eaeecae667c4e8bee144c53b629 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Thu, 6 Apr 2023 09:55:47 -0400
Subject: [PATCH 23/29] serial print

---
 cubesatsim/cubesatsim.ino | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index b54e26be..b733354d 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -3082,7 +3082,7 @@ void payload_OK_only()
     blink(50);
     char result = Serial2.read();
 //    Serial2.println(result);
-    Serial1.println(result);
+    Serial.println(result);
     if (result == 'R') {
       Serial2.println("OK");
       delay(100);

From ecc5bbd97d535619269e577495ac37f8174492a6 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Thu, 6 Apr 2023 10:06:51 -0400
Subject: [PATCH 24/29] always transmit payload data

---
 cubesatsim/cubesatsim.ino | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index b733354d..015c7835 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -3075,10 +3075,12 @@ void payload_OK_only()
    }    
   }
 	
-  Serial2.print("b");	
+//  Serial2.print("b");	
+  delay(250);	
 
-  if (Serial2.available() > 0) {
- 
+//  if (Serial2.available() > 0) {
+  if (true) {
+  
     blink(50);
     char result = Serial2.read();
 //    Serial2.println(result);
@@ -3090,8 +3092,9 @@ void payload_OK_only()
       start_payload(); 	    
 //      setup();
     }
-
-    if (result == '?')
+	  
+//    if (result == '?')
+    if (true)
     {
       if (bmePresent) {
         Serial2.print("OK BME280 ");

From 6f7eb24121fc138ff0bc9f552c2bf93dd6b20dab Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Thu, 6 Apr 2023 14:43:39 -0400
Subject: [PATCH 25/29] force BPF and 3V3 present always - Payload OK

---
 cubesatsim/cubesatsim.ino | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 015c7835..fcbdbd6d 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -3231,11 +3231,12 @@ void start_ina219() {
   if (!ina219_started)	{
 #ifndef PICO_0V1	
   // check if Pi is present by 3.3V voltage
-  pinMode(PI_3V3_PIN, INPUT); 	
+///  pinMode(PI_3V3_PIN, INPUT); 	
 //  Serial.print("Pi 3.3V: ");
 //  Serial.println(digitalRead(PI_3V3_PIN));
-  if (digitalRead(PI_3V3_PIN) == LOW)  {
+///  if (digitalRead(PI_3V3_PIN) == LOW)  {
 //  if (true)  {
+ if (false) {	  
     Serial.println("Pico powering INA219s through 3.3V pin");  
     pinMode(PI_3V3_PIN, OUTPUT);
     digitalWrite(PI_3V3_PIN, HIGH);	  
@@ -3766,11 +3767,12 @@ void config_gpio() {
   pinMode(27, INPUT);	
   pinMode(28, INPUT);		
 	
-  pinMode(PI_3V3_PIN, INPUT); 	
-  Serial.print("Pi 3.3V: ");
-  Serial.println(digitalRead(PI_3V3_PIN));
-  if (digitalRead(PI_3V3_PIN) == HIGH)  {
-// {
+///  pinMode(PI_3V3_PIN, INPUT); 	
+///  Serial.print("Pi 3.3V: ");
+///  Serial.println(digitalRead(PI_3V3_PIN));
+///  if (digitalRead(PI_3V3_PIN) == HIGH)  {
+ 	
+ {
     Serial.print("Pi Zero present, so running Payload OK code instead of CubeSatSim code.");
     start_payload();	
     while(true)	 { 
@@ -3802,11 +3804,11 @@ void config_gpio() {
   // set input pins and read	
   pinMode(MAIN_PB_PIN, INPUT_PULLUP);  // Read Main Board push button	
   pinMode(TXC_PIN, INPUT_PULLUP);  // Read TXC to see if present	
-  pinMode(BPF_PIN, INPUT_PULLUP);  // Read LPF to see if present
+///  pinMode(BPF_PIN, INPUT_PULLUP);  // Read LPF to see if present
 //  pinMode(SQUELCH, INPUT);	// Squelch from TXC
 
-  if (digitalRead(BPF_PIN) == FALSE) {  
-//  if (true) {  // force BPF present
+///  if (digitalRead(BPF_PIN) == FALSE) {  
+  if (true) {  // force BPF present ///
     Serial.println("BPF present - transmit enabled");
     filter_present = true;  
   }

From adf9add5587e21dbc1a69ded511c1da032977b05 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Thu, 6 Apr 2023 15:12:07 -0400
Subject: [PATCH 26/29] back to Serial1 with board changes

---
 cubesatsim/cubesatsim.ino | 64 ++++++++++++++++++++-------------------
 1 file changed, 33 insertions(+), 31 deletions(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index fcbdbd6d..b3c6fdf7 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -2607,14 +2607,16 @@ void print_string(char *string)
 void start_payload() {
 
 #ifdef APRS_VHF	  
- Serial2.setRX(9);	
+// Serial2.setRX(9);	
+// Serial2.setRX(9);		
 //   Serial2.setRX(1);
    delay(100);
- Serial2.setTX(8);
+// Serial2.setTX(8);
+// Serial2.setTX(8);	
 //   Serial2.setRX(0);
   	
    delay(100);
-   Serial2.begin(115200);	
+   Serial1.begin(115200);	
 	
    Serial.println("Starting Serial2 for payload");	
 #else	
@@ -3082,11 +3084,11 @@ void payload_OK_only()
   if (true) {
   
     blink(50);
-    char result = Serial2.read();
-//    Serial2.println(result);
+    char result = Serial1.read();
+//    Serial1.println(result);
     Serial.println(result);
     if (result == 'R') {
-      Serial2.println("OK");
+      Serial1.println("OK");
       delay(100);
       first_read = true;
       start_payload(); 	    
@@ -3097,42 +3099,42 @@ void payload_OK_only()
     if (true)
     {
       if (bmePresent) {
-        Serial2.print("OK BME280 ");
-        Serial2.print(bme.readTemperature());
-        Serial2.print(" ");
-        Serial2.print(bme.readPressure() / 100.0F);
-        Serial2.print(" ");
-        Serial2.print(bme.readAltitude(SEALEVELPRESSURE_HPA));
-        Serial2.print(" ");
-        Serial2.print(bme.readHumidity());
+        Serial1.print("OK BME280 ");
+        Serial1.print(bme.readTemperature());
+        Serial1.print(" ");
+        Serial1.print(bme.readPressure() / 100.0F);
+        Serial1.print(" ");
+        Serial1.print(bme.readAltitude(SEALEVELPRESSURE_HPA));
+        Serial1.print(" ");
+        Serial1.print(bme.readHumidity());
       } else
       {
-        Serial2.print("OK BME280 0.0 0.0 0.0 0.0");
+        Serial1.print("OK BME280 0.0 0.0 0.0 0.0");
       }
       mpu6050.update();
 
-      Serial2.print(" MPU6050 ");
-      Serial2.print(mpu6050.getGyroX());
-      Serial2.print(" ");
-      Serial2.print(mpu6050.getGyroY());
-      Serial2.print(" ");
-      Serial2.print(mpu6050.getGyroZ());
+      Serial1.print(" MPU6050 ");
+      Serial1.print(mpu6050.getGyroX());
+      Serial1.print(" ");
+      Serial1.print(mpu6050.getGyroY());
+      Serial1.print(" ");
+      Serial1.print(mpu6050.getGyroZ());
 
-    Serial2.print(" ");
-    Serial2.print(mpu6050.getAccX());   
-    Serial2.print(" ");
-    Serial2.print(mpu6050.getAccY());   
-    Serial2.print(" ");
-    Serial2.print(mpu6050.getAccZ());   
+    Serial1.print(" ");
+    Serial1.print(mpu6050.getAccX());   
+    Serial1.print(" ");
+    Serial1.print(mpu6050.getAccY());   
+    Serial1.print(" ");
+    Serial1.print(mpu6050.getAccZ());   
 
     sensorValue = analogRead(TEMPERATURE_PIN);
     //Serial.println(sensorValue);  
     Temp = T1 + (sensorValue - R1) *((T2 - T1)/(R2 - R1));
 
-    Serial2.print(" XS ");
-    Serial2.print(Temp);   
-    Serial2.print(" ");
-    Serial2.println(Sensor2);              
+    Serial1.print(" XS ");
+    Serial1.print(Temp);   
+    Serial1.print(" ");
+    Serial1.println(Sensor2);              
      
     float rotation = sqrt(mpu6050.getGyroX()*mpu6050.getGyroX() + mpu6050.getGyroY()*mpu6050.getGyroY() + mpu6050.getGyroZ()*mpu6050.getGyroZ()); 
     float acceleration = sqrt(mpu6050.getAccX()*mpu6050.getAccX() + mpu6050.getAccY()*mpu6050.getAccY() + mpu6050.getAccZ()*mpu6050.getAccZ()); 

From 123daf64a3f3256307b8e2d9e7deb2567bf13f46 Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Thu, 6 Apr 2023 15:26:44 -0400
Subject: [PATCH 27/29] add print Serial2 from GPS

---
 cubesatsim/cubesatsim.ino | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index b3c6fdf7..6182795f 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -2616,7 +2616,9 @@ void start_payload() {
 //   Serial2.setRX(0);
   	
    delay(100);
-   Serial1.begin(115200);	
+   Serial1.begin(115200); // serial to Pi
+	
+   Serial2.begin(9600);  // serial from GPS	
 	
    Serial.println("Starting Serial2 for payload");	
 #else	
@@ -3015,6 +3017,7 @@ void payload_OK_only()
     if ((result == '?') || first_time == true)  // commented back in
     if (true)
     {
+	    	       
       first_time = false;
       if (bmePresent) {
         Serial.print("OK BME280 ");
@@ -3082,6 +3085,9 @@ void payload_OK_only()
 
 //  if (Serial2.available() > 0) {
   if (true) {
+	  
+    while (Serial.available() > 0) // read GPS
+      Serial.write(Serial2.read());
   
     blink(50);
     char result = Serial1.read();

From 319d941c4915b3c0481db9d09071734f7afdd6ec Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Thu, 6 Apr 2023 15:29:13 -0400
Subject: [PATCH 28/29] read Serial2

---
 cubesatsim/cubesatsim.ino | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 6182795f..d0cc052e 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -3086,7 +3086,7 @@ void payload_OK_only()
 //  if (Serial2.available() > 0) {
   if (true) {
 	  
-    while (Serial.available() > 0) // read GPS
+    while (Serial2.available() > 0) // read GPS
       Serial.write(Serial2.read());
   
     blink(50);

From 5f6e79dcdc22d36e13e81b52b20b5bc519f66c2d Mon Sep 17 00:00:00 2001
From: alanbjohnston <alan.b.johnston@gmail.com>
Date: Sun, 16 Apr 2023 20:19:15 -0400
Subject: [PATCH 29/29] change gps to 115200

---
 cubesatsim/cubesatsim.ino | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index d0cc052e..41f4f1fb 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -2618,7 +2618,7 @@ void start_payload() {
    delay(100);
    Serial1.begin(115200); // serial to Pi
 	
-   Serial2.begin(9600);  // serial from GPS	
+   Serial2.begin(115200);  // serial from GPS	
 	
    Serial.println("Starting Serial2 for payload");	
 #else