Pulses refactoring (another one!) (#6510)

Pulses refactoring (another one!)

radio/src/targets/horus/extmodule_driver.cpp

@@ -83,7 +83,7 @@ void extmodulePpmStart()
   NVIC_SetPriority(EXTMODULE_TIMER_IRQn, 7);
 }
 
-void extmodulePxxStart()
+void extmodulePxx1PulsesStart()
 {
   EXTERNAL_MODULE_ON();
 
@@ -127,11 +127,6 @@ void extmodulePxxStart()
   NVIC_SetPriority(EXTMODULE_TIMER_IRQn, 7);
 }
 
-void extmodulePxx2Start()
-{
-  // TODO just enable the S.PORT line (or let telemetry init do it)
-}
-
 #if defined(DSM2)
 void extmoduleSerialStart(uint32_t /*baudrate*/, uint32_t period_half_us, bool inverted)
 {
@@ -284,6 +279,6 @@ extern "C" void EXTMODULE_TIMER_IRQHandler()
 {
   EXTMODULE_TIMER->DIER &= ~TIM_DIER_CC2IE; // Stop this interrupt
   EXTMODULE_TIMER->SR &= ~TIM_SR_CC2IF;
-  if (setupPulses(EXTERNAL_MODULE))
+  if (setupPulsesExternalModule())
     extmoduleSendNextFrame();
 }