diff --git a/include/rtctime.h b/include/rtctime.h
index 5b8672e9..8a98f241 100644
--- a/include/rtctime.h
+++ b/include/rtctime.h
@@ -21,8 +21,8 @@ void sync_rtctime(void);
 time_t get_rtctime(void);
 float get_rtctemp(void);
 void IRAM_ATTR CLOCKIRQ();
-int pps_init(uint32_t pps_freq);
-void pps_start();
+int timepulse_init(uint32_t pps_freq);
+void timepulse_start();
 uint8_t sync_clock(time_t t);
 
 #endif // _RTCTIME_H
\ No newline at end of file
diff --git a/platformio.ini b/platformio.ini
index e28b6047..cf7f1ce3 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -15,8 +15,8 @@
 ;env_default = ttgov2
 ;env_default = ttgov21old
 ;env_default = ttgov21new
-;env_default = ttgobeam
-env_default = ttgofox
+env_default = ttgobeam
+;env_default = ttgofox
 ;env_default = lopy
 ;env_default = lopy4
 ;env_default = fipy
@@ -223,7 +223,6 @@ build_flags =
 upload_protocol = ${common.upload_protocol}
 extra_scripts = ${common.extra_scripts}
 monitor_speed = ${common.monitor_speed}
-upload_port = COM61
 
 [env:ttgobeam]
 platform = ${common.platform_espressif32}
@@ -235,7 +234,7 @@ lib_deps =
     ${common.lib_deps_basic}
     ${common.lib_deps_lora}
     ${common.lib_deps_gps}
-;   ${common.lib_deps_display}
+    ${common.lib_deps_display}
 build_flags =
     ${common.build_flags_all}
     -mfix-esp32-psram-cache-issue
diff --git a/src/dcf77.cpp b/src/dcf77.cpp
index a4b1c62a..ac76948a 100644
--- a/src/dcf77.cpp
+++ b/src/dcf77.cpp
@@ -50,9 +50,9 @@ int dcf77_init(void) {
 
   assert(ClockTask); // has clock task started?
 
-  pps_init(PPS);              // setup pulse
+  timepulse_init(PPS);              // setup pulse
   DCF_Out(sync_clock(now())); // sync DCF time on next second
-  pps_start();                // start pulse
+  timepulse_start();                // start pulse
 
   return 1; // success
 } // ifdcf77_init
diff --git a/src/if482.cpp b/src/if482.cpp
index 600e3fd5..759d863e 100644
--- a/src/if482.cpp
+++ b/src/if482.cpp
@@ -120,8 +120,8 @@ int if482_init(void) {
 
   assert(ClockTask); // has clock task started?
 
-  pps_init(PPS); // setup pulse
-  pps_start();   // start pulse
+  timepulse_init(PPS); // setup pulse
+  timepulse_start();   // start pulse
 
   return 1; // success
 } // if482_init
diff --git a/src/rtctime.cpp b/src/rtctime.cpp
index feb31406..844d0c82 100644
--- a/src/rtctime.cpp
+++ b/src/rtctime.cpp
@@ -103,7 +103,7 @@ float get_rtctemp(void) {
 #endif // HAS_RTC
 
 // helper function to setup a pulse for time synchronisation
-int pps_init(uint32_t pulse_period_ms) {
+int timepulse_init(uint32_t pulse_period_ms) {
 
 // use time pulse from GPS as time base with fixed 1Hz frequency
 #if defined GPS_INT && defined GPS_CLK
@@ -150,7 +150,7 @@ int pps_init(uint32_t pulse_period_ms) {
 #endif
 }
 
-void pps_start() {
+void timepulse_start() {
 #ifdef GPS_INT // start external clock
   attachInterrupt(digitalPinToInterrupt(GPS_INT), CLOCKIRQ, RISING);
 #elif defined RTC_INT // start external clock