Place adcRead() back to mixer task to avoid issues with heartbeat triggered modules

Resolves #166

radio/src/opentx.cpp

@@ -1091,6 +1091,10 @@ void getADC()
   }
 #endif
 
+  DEBUG_TIMER_START(debugTimerAdcRead);
+  adcRead();
+  DEBUG_TIMER_STOP(debugTimerAdcRead);
+
   for (uint8_t x=0; x<NUM_ANALOGS; x++) {
     uint16_t v;
 

radio/src/targets/common/arm/stm32/mixer_scheduler_driver.cpp

@@ -74,11 +74,6 @@ extern "C" void MIXER_SCHEDULER_TIMER_IRQHandler(void)
   // set next period
   MIXER_SCHEDULER_TIMER->ARR = 2 * getMixerSchedulerPeriod() - 1;
 
-  //read ADCs 
-  DEBUG_TIMER_START(debugTimerAdcRead);
-  adcRead();
-  DEBUG_TIMER_STOP(debugTimerAdcRead);
-
   // trigger mixer start
   mixerSchedulerISRTrigger();
 }