sync external module (SBUS, DSM, MULTI)

radio/src/pulses/dsm2.cpp

@@ -76,7 +76,6 @@ void _send_1(uint8_t v)
 
   *extmodulePulsesData.dsm2.ptr++ = v - 1;
   extmodulePulsesData.dsm2.index += 1;
-  extmodulePulsesData.dsm2.rest -= v;
 }
 
 void sendByteDsm2(uint8_t b) // max 10 changes 0 10 10 10 10 1
@@ -101,9 +100,9 @@ void sendByteDsm2(uint8_t b) // max 10 changes 0 10 10 10 10 1
 void putDsm2Flush()
 {
   if (extmodulePulsesData.dsm2.index & 1)
-    *extmodulePulsesData.dsm2.ptr++ = extmodulePulsesData.dsm2.rest;
+    *extmodulePulsesData.dsm2.ptr++ = 60000;
   else
-    *(extmodulePulsesData.dsm2.ptr - 1) = extmodulePulsesData.dsm2.rest;
+    *(extmodulePulsesData.dsm2.ptr - 1) = 60000;
 }
 #endif
 
@@ -119,7 +118,6 @@ void setupPulsesDSM2()
   extmodulePulsesData.dsm2.serialBitCount = 0 ;
 #else
   extmodulePulsesData.dsm2.index = 0;
-  extmodulePulsesData.dsm2.rest = DSM2_PERIOD * 2000;
 #endif
 
   extmodulePulsesData.dsm2.ptr = extmodulePulsesData.dsm2.pulses;

radio/src/pulses/multi.cpp

@@ -200,10 +200,8 @@ void setupPulsesMultiExternalModule()
   extmodulePulsesData.dsm2.serialByte = 0 ;
   extmodulePulsesData.dsm2.serialBitCount = 0 ;
 #else
-  extmodulePulsesData.dsm2.rest = getMultiSyncStatus(EXTERNAL_MODULE).getAdjustedRefreshRate();
   extmodulePulsesData.dsm2.index = 0;
 #endif
-
   extmodulePulsesData.dsm2.ptr = extmodulePulsesData.dsm2.pulses;
 
   setupPulsesMulti(EXTERNAL_MODULE);

radio/src/pulses/pulses.h

@@ -226,7 +226,6 @@ typedef Dsm2SerialPulsesData Dsm2PulsesData;
 PACK(struct Dsm2TimerPulsesData {
   pulse_duration_t pulses[MAX_PULSES_TRANSITIONS];
   pulse_duration_t * ptr;
-  uint16_t rest;
   uint8_t index;
 });
 typedef Dsm2TimerPulsesData Dsm2PulsesData;

radio/src/pulses/sbus.cpp

@@ -55,7 +55,6 @@ static void _send_level(uint8_t v)
 
   *extmodulePulsesData.dsm2.ptr++ = v - 1;
   extmodulePulsesData.dsm2.index+=1;
-  extmodulePulsesData.dsm2.rest -=v;
 }
 
 void sendByteSbus(uint8_t b) // max 11 changes 0 10 10 10 10 P 1
@@ -113,7 +112,6 @@ void setupPulsesSbus()
   extmodulePulsesData.dsm2.serialByte = 0;
   extmodulePulsesData.dsm2.serialBitCount = 0;
 #else
-  extmodulePulsesData.dsm2.rest = SBUS_PERIOD_HALF_US;
   extmodulePulsesData.dsm2.index = 0;
 #endif
 

radio/src/targets/horus/extmodule_driver.cpp

@@ -179,7 +179,7 @@ void extmoduleSerialStart(uint32_t /*baudrate*/, uint32_t period_half_us, bool i
   EXTMODULE_TIMER->ARR = period_half_us;
   EXTMODULE_TIMER->CCR2 = period_half_us - 4000;
   EXTMODULE_TIMER->SR &= ~TIM_SR_CC2IF; // Clear flag
-  EXTMODULE_TIMER->DIER |= TIM_DIER_UDE | TIM_DIER_CC2IE;
+  EXTMODULE_TIMER->DIER |= TIM_DIER_UDE;
   EXTMODULE_TIMER->CR1 |= TIM_CR1_CEN;
 
   NVIC_EnableIRQ(EXTMODULE_TIMER_DMA_STREAM_IRQn);
@@ -318,23 +318,36 @@ void extmoduleSendNextFrame()
 
 #if defined(DSM2)
     case PROTOCOL_CHANNELS_SBUS:
-#if defined(PCBX10) || PCBREV >= 13
-      EXTMODULE_TIMER->CCER = TIM_CCER_CC3E | (GET_SBUS_POLARITY(EXTERNAL_MODULE) ? TIM_CCER_CC3P : 0); // reverse polarity for Sbus if needed
-#else
-      EXTMODULE_TIMER->CCER = TIM_CCER_CC1E | (GET_SBUS_POLARITY(EXTERNAL_MODULE) ? TIM_CCER_CC1P : 0); // reverse polarity for Sbus if needed
-#endif
-      // no break
     case PROTOCOL_CHANNELS_DSM2_LP45:
     case PROTOCOL_CHANNELS_DSM2_DSM2:
     case PROTOCOL_CHANNELS_DSM2_DSMX:
     case PROTOCOL_CHANNELS_MULTIMODULE:
-      EXTMODULE_TIMER->CCR2 = *(extmodulePulsesData.dsm2.ptr - 1) - 4000; // 2mS in advance
+
+      if (EXTMODULE_TIMER_DMA_STREAM->CR & DMA_SxCR_EN)
+        return;
+
+      if (PROTOCOL_CHANNELS_SBUS == moduleState[EXTERNAL_MODULE].protocol) {
+#if defined(PCBX10) || PCBREV >= 13
+        EXTMODULE_TIMER->CCER = TIM_CCER_CC3E | (GET_SBUS_POLARITY(EXTERNAL_MODULE) ? TIM_CCER_CC3P : 0); // reverse polarity for Sbus if needed
+#else
+        EXTMODULE_TIMER->CCER = TIM_CCER_CC1E | (GET_SBUS_POLARITY(EXTERNAL_MODULE) ? TIM_CCER_CC1P : 0); // reverse polarity for Sbus if needed
+#endif
+      }
+
+      // disable timer
+      EXTMODULE_TIMER->CR1 &= ~TIM_CR1_CEN;
+
+      // send DMA request
       EXTMODULE_TIMER_DMA_STREAM->CR &= ~DMA_SxCR_EN; // Disable DMA
       EXTMODULE_TIMER_DMA_STREAM->CR |= EXTMODULE_TIMER_DMA_CHANNEL | DMA_SxCR_DIR_0 | DMA_SxCR_MINC | EXTMODULE_TIMER_DMA_SIZE | DMA_SxCR_PL_0 | DMA_SxCR_PL_1;
       EXTMODULE_TIMER_DMA_STREAM->PAR = CONVERT_PTR_UINT(&EXTMODULE_TIMER->ARR);
       EXTMODULE_TIMER_DMA_STREAM->M0AR = CONVERT_PTR_UINT(extmodulePulsesData.dsm2.pulses);
       EXTMODULE_TIMER_DMA_STREAM->NDTR = extmodulePulsesData.dsm2.ptr - extmodulePulsesData.dsm2.pulses;
       EXTMODULE_TIMER_DMA_STREAM->CR |= DMA_SxCR_EN | DMA_SxCR_TCIE; // Enable DMA
+
+      // re-init timer
+      EXTMODULE_TIMER->EGR = 1;
+      EXTMODULE_TIMER->CR1 |= TIM_CR1_CEN;
       break;
 #endif
 
@@ -390,13 +403,13 @@ extern "C" void EXTMODULE_TIMER_DMA_IRQHandler()
   DMA_ClearITPendingBit(EXTMODULE_TIMER_DMA_STREAM, EXTMODULE_TIMER_DMA_FLAG_TC);
 
   EXTMODULE_TIMER->SR &= ~TIM_SR_CC2IF; // Clear flag
-  EXTMODULE_TIMER->DIER |= TIM_DIER_CC2IE; // Enable this interrupt
+  //EXTMODULE_TIMER->DIER |= TIM_DIER_CC2IE; // Enable this interrupt
 }
 
 extern "C" void EXTMODULE_TIMER_IRQHandler()
 {
   EXTMODULE_TIMER->DIER &= ~TIM_DIER_CC2IE; // Stop this interrupt
   EXTMODULE_TIMER->SR &= ~TIM_SR_CC2IF;
-  if (setupPulsesExternalModule())
+  // if (setupPulsesExternalModule())
-    extmoduleSendNextFrame();
+  //   extmoduleSendNextFrame();
 }

radio/src/tasks.cpp

@@ -87,6 +87,12 @@ bool isModuleSynchronous(uint8_t module)
 #endif
 #if defined(INTMODULE_USART) || defined(EXTMODULE_USART)
     case PROTOCOL_CHANNELS_PXX1_SERIAL:
+#endif
+#if defined(DSM2)
+    case PROTOCOL_CHANNELS_SBUS:
+    case PROTOCOL_CHANNELS_DSM2_LP45:
+    case PROTOCOL_CHANNELS_DSM2_DSM2:
+    case PROTOCOL_CHANNELS_DSM2_DSMX:
 #endif
       return true;
   }
@@ -108,7 +114,7 @@ void sendSynchronousPulses()
   }
 }
 
-#define DEBUG_MIXER_SCHEDULER
+//#define DEBUG_MIXER_SCHEDULER
 
 uint32_t nextMixerTime[NUM_MODULES];
 
@@ -194,6 +200,7 @@ TASK_FUNCTION(mixerTask)
       if (t0 > maxMixerDuration)
         maxMixerDuration = t0;
 
+      serialPrint("cnt = %d", EXTMODULE_TIMER->CNT);
       sendSynchronousPulses();
     }
   }