Fixes #2579: Added support for Trainer signal alarm

- added alarm “Trainer signal lost” & “Trainer signal recovered”.
- moved PPM capture code to trainer_input.{h,cpp}

radio/src/Makefile

@@ -1058,7 +1058,7 @@ ifeq ($(GUI), YES)
   CPPDEFS += -DGUI
 endif
 
-CPPSRC += opentx.cpp functions.cpp strhelpers.cpp $(PULSESSRC) switches.cpp curves.cpp mixer.cpp stamp.cpp $(GUISRC) $(EEPROMSRC) timers.cpp
+CPPSRC += opentx.cpp functions.cpp strhelpers.cpp $(PULSESSRC) switches.cpp curves.cpp mixer.cpp stamp.cpp $(GUISRC) $(EEPROMSRC) timers.cpp trainer_input.cpp
 
 ifeq ($(GUI), YES)
   GUISRC += gui/$(GUIDIRECTORY)/lcd.cpp gui/$(GUIDIRECTORY)/splash.cpp gui/$(GUIDIRECTORY)/fonts.cpp

radio/src/audio_arm.cpp

@@ -169,6 +169,8 @@ const char * const audioFilenames[] = {
   "swr_red",
   "telemko",
   "telemok",
+  "trainko",
+  "trainok",
 #if defined(PCBSKY9X)
   "highmah",
   "hightemp",

radio/src/audio_arm.h

@@ -331,6 +331,8 @@ void audioStart();
 #define AUDIO_RXBATT_RED()       audioEvent(AU_RXBATT_RED)
 #define AUDIO_TELEMETRY_LOST()   audioEvent(AU_TELEMETRY_LOST)
 #define AUDIO_TELEMETRY_BACK()   audioEvent(AU_TELEMETRY_BACK)
+#define AUDIO_TRAINER_LOST()     audioEvent(AU_TRAINER_LOST)
+#define AUDIO_TRAINER_BACK()     audioEvent(AU_TRAINER_BACK)
 
 #define AUDIO_HEARTBEAT()
 

radio/src/mixer.cpp

@@ -455,7 +455,7 @@ void evalInputs(uint8_t mode)
       }
 #endif
 
-      if (mode <= e_perout_mode_inactive_flight_mode && isFunctionActive(FUNCTION_TRAINER+ch) && ppmInValid) {
+      if (mode <= e_perout_mode_inactive_flight_mode && isFunctionActive(FUNCTION_TRAINER+ch) && IS_TRAINER_INPUT_VALID()) {
         // trainer mode
         TrainerMix* td = &g_eeGeneral.trainer.mix[ch];
         if (td->mode) {
@@ -662,7 +662,7 @@ void evalFlightModeMixes(uint8_t mode, uint8_t tick10ms)
 
 #define MIXER_LINE_DISABLE()   (mixCondition = true, mixEnabled = 0)
 
-      if (mixEnabled && md->srcRaw >= MIXSRC_FIRST_TRAINER && md->srcRaw <= MIXSRC_LAST_TRAINER && !ppmInValid) {
+      if (mixEnabled && md->srcRaw >= MIXSRC_FIRST_TRAINER && md->srcRaw <= MIXSRC_LAST_TRAINER && !IS_TRAINER_INPUT_VALID()) {
         MIXER_LINE_DISABLE();
       }
 

radio/src/opentx.cpp

@@ -155,7 +155,7 @@ void per10ms()
 #endif
 
   if (trimsCheckTimer) trimsCheckTimer--;
-  if (ppmInValid) ppmInValid--;
+  if (g_ppmInputValidityTimer) g_ppmInputValidityTimer--;
 
 #if defined(CPUARM)
   if (trimsDisplayTimer)
@@ -1714,6 +1714,7 @@ void doMixerCalculations()
       s_cnt_1s += 1;
 
       logicalSwitchesTimerTick();
+      checkTrainerSignalWarning();
 
       if (s_cnt_1s >= 10) { // 1sec
         s_cnt_1s -= 10;
@@ -2068,10 +2069,6 @@ void checkBattery()
   }
 }
 
-int16_t g_ppmIns[NUM_TRAINER];
-uint8_t ppmInState = 0; // 0=unsync 1..8= wait for value i-1
-uint8_t ppmInValid = 0;
-
 #if !defined(SIMU) && !defined(CPUARM)
 
 volatile uint8_t g_tmr16KHz; //continuous timer 16ms (16MHz/1024/256) -- 8-bit counter overflow
@@ -2153,26 +2150,7 @@ ISR(TIMER3_CAPT_vect) // G: High frequency noise can cause stack overflo with IS
   PAUSE_PPMIN_INTERRUPT();
   sei(); // enable other interrupts
 
-  uint16_t val = (capture - lastCapt) / 2;
-
-  // G: We process g_ppmIns immediately here, to make servo movement as smooth as possible
-  //    while under trainee control
-  if (val>4000 && val < 16000) { // G: Prioritize reset pulse. (Needed when less than 8 incoming pulses)
-    ppmInState = 1; // triggered
-  }
-  else {
-    if (ppmInState>0 && ppmInState<=8) {
-      if (val>800 && val<2200) { // if valid pulse-width range
-        ppmInValid = PPM_IN_VALID_TIMEOUT;
-        g_ppmIns[ppmInState++ - 1] = (int16_t)(val - 1500) * (uint8_t)(g_eeGeneral.PPM_Multiplier+10)/10; //+-500 != 512, but close enough.
-      }
-      else {
-        ppmInState = 0; // not triggered
-      }
-    }
-  }
-
-  lastCapt = capture;
+  captureTrainerPulses(capture);
   
   cli(); // disable other interrupts for stack pops before this function's RETI
   RESUME_PPMIN_INTERRUPT();

radio/src/opentx.h

@@ -1127,10 +1127,8 @@ extern uint8_t            g_vbat100mV;
 extern uint8_t            g_beepCnt;
 extern uint8_t            g_beepVal[5];
 
-extern uint8_t            ppmInState; //0=unsync 1..8= wait for value i-1
-extern uint8_t            ppmInValid;
-#define PPM_IN_VALID_TIMEOUT 100
-extern int16_t            g_ppmIns[NUM_TRAINER];
+#include "trainer_input.h"
+
 extern int32_t            chans[NUM_CHNOUT];
 extern int16_t            ex_chans[NUM_CHNOUT]; // Outputs (before LIMITS) of the last perMain
 extern int16_t            channelOutputs[NUM_CHNOUT];
@@ -1392,6 +1390,8 @@ enum AUDIO_SOUNDS {
     AU_SWR_RED,
     AU_TELEMETRY_LOST,
     AU_TELEMETRY_BACK,
+    AU_TRAINER_LOST,
+    AU_TRAINER_BACK,
 #endif
 #if defined(PCBSKY9X)
     AU_TX_MAH_HIGH,

radio/src/sbus.cpp

@@ -87,7 +87,7 @@ void processSbusFrame(uint8_t *sbus, int16_t *pulses, uint32_t size)
     inputbits >>= SBUS_CH_BITS;
   }
 
-  ppmInValid = PPM_IN_VALID_TIMEOUT;
+  g_ppmInputValidityTimer = PPM_IN_VALID_TIMEOUT;
 }
 
 void processSbusInput()

radio/src/targets/sky9x/board_sky9x.cpp

@@ -248,31 +248,10 @@ void start_timer4()
 
 extern "C" void TC3_IRQHandler() //capture ppm in at 2MHz
 {
-  static uint16_t lastCapt ;
-
   uint16_t capture = TC1->TC_CHANNEL[0].TC_RA ;
   (void) TC1->TC_CHANNEL[0].TC_SR ;               // Acknowledge the interrupt
 
-  uint16_t val = ((uint16_t)(capture - lastCapt)) / 2;
-
-  // G: We process g_ppmIns immediately here, to make servo movement as smooth as possible
-  //    while under trainee control
-  if (val>4000 && val<19000) { // G: Prioritize reset pulse. (Needed when less than 16 incoming pulses)
-    ppmInState = 1; // triggered
-  }
-  else {
-    if (ppmInState>0 && ppmInState<=16) {
-      if (val>800 && val<2200) { // if valid pulse-width range
-        ppmInValid = PPM_IN_VALID_TIMEOUT;
-        g_ppmIns[ppmInState++ - 1] = (int16_t)(val - 1500)*(g_eeGeneral.PPM_Multiplier+10)/10; //+-500 != 512, but close enough.
-      }
-      else {
-        ppmInState = 0; // not triggered
-      }
-    }
-  }
-
-  lastCapt = capture;
+  captureTrainerPulses(capture);
 }
 
 void init_trainer_capture()

radio/src/targets/taranis/trainer_driver.cpp

@@ -121,8 +121,6 @@ void stop_trainer_capture()
 extern "C" void TIM3_IRQHandler()
 {
   uint16_t capture = 0;
-  static uint16_t lastCapt ;
-  uint16_t val ;
   bool doCapture = false ;
 
   // What mode? in or out?
@@ -139,25 +137,7 @@ extern "C" void TIM3_IRQHandler()
   }
 
   if (doCapture) {
-    val = (uint16_t)(capture - lastCapt) / 2 ;
-    lastCapt = capture;
-
-    // We process g_ppmInsright here to make servo movement as smooth as possible
-    //    while under trainee control
-    if (val>4000 && val<19000) { // G: Prioritize reset pulse. (Needed when less than 16 incoming pulses)
-      ppmInState = 1; // triggered
-    }
-    else {
-      if (ppmInState>0 && ppmInState<=16) {
-        if (val>800 && val<2200) {
-          ppmInValid = PPM_IN_VALID_TIMEOUT;
-          g_ppmIns[ppmInState++ - 1] = (int16_t)(val - 1500)*(g_eeGeneral.PPM_Multiplier+10)/10; //+-500 != 512, but close enough.
-        }
-        else {
-          ppmInState = 0; // not triggered
-        }
-      }
-    }
+    captureTrainerPulses(capture);
   }
 
   // PPM out compare interrupt

radio/src/trainer_input.cpp

@@ -0,0 +1,69 @@
+/*
+ * Authors (alphabetical order)
+ * - Andre Bernet <bernet.andre@gmail.com>
+ * - Andreas Weitl
+ * - Bertrand Songis <bsongis@gmail.com>
+ * - Bryan J. Rentoul (Gruvin) <gruvin@gmail.com>
+ * - Cameron Weeks <th9xer@gmail.com>
+ * - Erez Raviv
+ * - Gabriel Birkus
+ * - Jean-Pierre Parisy
+ * - Karl Szmutny
+ * - Michael Blandford
+ * - Michal Hlavinka
+ * - Pat Mackenzie
+ * - Philip Moss
+ * - Rob Thomson
+ * - Romolo Manfredini <romolo.manfredini@gmail.com>
+ * - Thomas Husterer
+ *
+ * opentx is based on code named
+ * gruvin9x by Bryan J. Rentoul: http://code.google.com/p/gruvin9x/,
+ * er9x by Erez Raviv: http://code.google.com/p/er9x/,
+ * and the original (and ongoing) project by
+ * Thomas Husterer, th9x: http://code.google.com/p/th9x/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include "trainer_input.h"
+
+int16_t g_ppmIns[NUM_TRAINER];
+uint8_t g_ppmInputValidityTimer;
+
+
+#if defined(CPUARM)
+#include "audio_arm.h"
+
+void checkTrainerSignalWarning()
+{
+  enum PpmInValidState_t {
+    PPM_IN_IS_NOT_USED=0,
+    PPM_IN_IS_VALID,
+    PPM_IN_INVALID
+  };
+
+  static uint8_t ppmInputValidState = PPM_IN_IS_NOT_USED;
+
+  if(g_ppmInputValidityTimer && (ppmInputValidState == PPM_IN_IS_NOT_USED)) {
+    ppmInputValidState = PPM_IN_IS_VALID;
+  }
+  else if (!g_ppmInputValidityTimer && (ppmInputValidState == PPM_IN_IS_VALID)) {
+    ppmInputValidState = PPM_IN_INVALID;
+    AUDIO_TRAINER_LOST();
+  }
+  else if (g_ppmInputValidityTimer && (ppmInputValidState == PPM_IN_INVALID)) {
+    ppmInputValidState = PPM_IN_IS_VALID;
+    AUDIO_TRAINER_BACK();
+  }
+}
+
+#endif

radio/src/trainer_input.h

@@ -0,0 +1,89 @@
+/*
+ * Authors (alphabetical order)
+ * - Andre Bernet <bernet.andre@gmail.com>
+ * - Andreas Weitl
+ * - Bertrand Songis <bsongis@gmail.com>
+ * - Bryan J. Rentoul (Gruvin) <gruvin@gmail.com>
+ * - Cameron Weeks <th9xer@gmail.com>
+ * - Erez Raviv
+ * - Gabriel Birkus
+ * - Jean-Pierre Parisy
+ * - Karl Szmutny
+ * - Michael Blandford
+ * - Michal Hlavinka
+ * - Pat Mackenzie
+ * - Philip Moss
+ * - Rob Thomson
+ * - Romolo Manfredini <romolo.manfredini@gmail.com>
+ * - Thomas Husterer
+ *
+ * opentx is based on code named
+ * gruvin9x by Bryan J. Rentoul: http://code.google.com/p/gruvin9x/,
+ * er9x by Erez Raviv: http://code.google.com/p/er9x/,
+ * and the original (and ongoing) project by
+ * Thomas Husterer, th9x: http://code.google.com/p/th9x/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef trainer_input_h
+#define trainer_input_h
+
+#include "myeeprom.h"
+
+// Trainer input channels
+extern int16_t g_ppmIns[NUM_TRAINER];
+
+// Timer gets decremented in per10ms()
+#define PPM_IN_VALID_TIMEOUT 100 // 1s
+extern uint8_t g_ppmInputValidityTimer;
+
+#define IS_TRAINER_INPUT_VALID() (g_ppmInputValidityTimer != 0)
+
+#if defined(CPUARM)
+void checkTrainerSignalWarning();
+#else
+#define checkTrainerSignalWarning()
+#endif
+
+// Needs to be inlined to avoid slow function calls in ISR routines
+inline void captureTrainerPulses(uint16_t capture)
+{
+  static uint16_t lastCapt=0;
+  static uint8_t channelNumber=0;
+
+  uint16_t val = (uint16_t)(capture - lastCapt) / 2;
+  lastCapt = capture;
+
+  // We process g_ppmInsright here to make servo movement as smooth as possible
+  //    while under trainee control
+  //
+  // G: Prioritize reset pulse. (Needed when less than 16 incoming pulses)
+  //
+  if (val>4000 && val<19000) {
+    channelNumber = 1; // triggered
+  }
+  else {
+    if ((channelNumber > 0) && (channelNumber <= NUM_TRAINER)) {
+      if (val>800 && val<2200) {
+        g_ppmInputValidityTimer = PPM_IN_VALID_TIMEOUT;
+        g_ppmIns[channelNumber++ - 1] =
+          //+-500 != 512, but close enough.
+          (int16_t)(val - 1500)*(g_eeGeneral.PPM_Multiplier+10)/10; 
+      }
+      else {
+        channelNumber = 0; // not triggered
+      }
+    }
+  }
+}
+
+#endif

radio/util/tts.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
 
@@ -186,6 +186,8 @@ def ttsEn():
                     (u"radio antenna defective", "swr_red", NO_ALTERNATE),
                     (u"telemetry lost", "telemko", NO_ALTERNATE),
                     (u"telemetry recovered", "telemok", NO_ALTERNATE),
+                    (u"trainer signal lost", "trainko", NO_ALTERNATE),
+                    (u"trainer signal recovered", "trainok", NO_ALTERNATE),
                    ]:
         systemSounds.append((s, filename(f, a)))
     for i, (s, f) in enumerate([
@@ -282,6 +284,8 @@ def ttsFr():
                     (u"Antenne défectueuse", "swr_red", NO_ALTERNATE),
                     (u"Plus de télémétrie", "telemko", NO_ALTERNATE),
                     (u"Télémétrie retrouvée", "telemok", NO_ALTERNATE),
+                    (u"Signal écolage perdu", "trainko", NO_ALTERNATE),
+                    (u"Signal écolage retrouvé", "trainok", NO_ALTERNATE),
                    ]:
         systemSounds.append((s, filename(f, a)))
     for i, (s, f) in enumerate([
@@ -599,6 +603,10 @@ def ttsDe():
                     (u"Funksignal schlecht!", "rssi_org", NO_ALTERNATE),
                     (u"Funksignal kritisch!", "rssi_red", NO_ALTERNATE),
                     (u"Problem mit der sender Antenna", "swr_red", NO_ALTERNATE),
+                    (u"Telemetrie verloren", "telemko", NO_ALTERNATE),
+                    (u"Telemetrie wiederhergestellt", "telemok", NO_ALTERNATE),
+                    (u"Schülersignal verloren", "trainko", NO_ALTERNATE),
+                    (u"Schülersignal wiederhergestellt", "trainok", NO_ALTERNATE),
                  ]:
         systemSounds.append((s, filename(f, a)))
     for i, s in enumerate(["Timer", "Timer",  "Sendung", "Empfang", "A1", "A2", "Hoehe", "Motor",