time code sanitizations

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

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

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