⚡️ Controller Fan software PWM (etc.) (#23102)

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

Marlin/src/HAL/AVR/fast_pwm.cpp

@@ -54,8 +54,8 @@ Timer get_pwm_timer(const pin_t pin) {
       case TIMER1A: case TIMER1B:
     #endif
                                         break;
-    #if defined(TCCR2) || defined(TCCR2A)
+    #if HAS_TCCR2 || defined(TCCR2A)
-      #ifdef TCCR2
+      #if HAS_TCCR2
         case TIMER2: {
           Timer timer = {
             /*TCCRnQ*/  { &TCCR2, nullptr, nullptr },
@@ -200,16 +200,7 @@ void set_pwm_frequency(const pin_t pin, int f_desired) {
         res = res_temp_fast;
         j = i;
         // Set the Wave Generation Mode to FAST PWM
-        if (timer.n == 2) {
+        wgm = timer.n == 2 ? TERN(USE_OCR2A_AS_TOP, WGM2_FAST_PWM_OCR2A, WGM2_FAST_PWM) : WGM_FAST_PWM_ICRn;
-          wgm = (
-            #if ENABLED(USE_OCR2A_AS_TOP)
-              WGM2_FAST_PWM_OCR2A
-            #else
-              WGM2_FAST_PWM
-            #endif
-          );
-        }
-        else wgm = WGM_FAST_PWM_ICRn;
       }
       // If PHASE CORRECT values are closes to desired f
       else if (f_phase_diff < f_diff) {
@@ -217,16 +208,7 @@ void set_pwm_frequency(const pin_t pin, int f_desired) {
         res = res_temp_phase_correct;
         j = i;
         // Set the Wave Generation Mode to PWM PHASE CORRECT
-        if (timer.n == 2) {
+        wgm = timer.n == 2 ? TERN(USE_OCR2A_AS_TOP, WGM2_PWM_PC_OCR2A, WGM2_PWM_PC) : WGM_PWM_PC_ICRn;
-          wgm = (
-            #if ENABLED(USE_OCR2A_AS_TOP)
-              WGM2_PWM_PC_OCR2A
-            #else
-              WGM2_PWM_PC
-            #endif
-          );
-        }
-        else wgm = WGM_PWM_PC_ICRn;
       }
     }
   }
@@ -234,9 +216,7 @@ void set_pwm_frequency(const pin_t pin, int f_desired) {
   _SET_CSn(timer.TCCRnQ, j);
 
   if (timer.n == 2) {
-    #if ENABLED(USE_OCR2A_AS_TOP)
+    TERN_(USE_OCR2A_AS_TOP, _SET_OCRnQ(timer.OCRnQ, 0, res));  // Set OCR2A value (TOP) = res
-      _SET_OCRnQ(timer.OCRnQ, 0, res);  // Set OCR2A value (TOP) = res
-    #endif
   }
   else
     _SET_ICRn(timer.ICRn, res);         // Set ICRn value (TOP) = res
@@ -257,15 +237,9 @@ void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size/*=255
       Timer timer = get_pwm_timer(pin);
       if (timer.n == 0) return; // Don't proceed if protected timer or not recognized
       // Set compare output mode to CLEAR -> SET or SET -> CLEAR (if inverted)
-      _SET_COMnQ(timer.TCCRnQ, (timer.q
+      _SET_COMnQ(timer.TCCRnQ, timer.q TERN_(HAS_TCCR2, + (timer.q == 2)), COM_CLEAR_SET + invert); // COM20 is on bit 4 of TCCR2, so +1 for q==2
-          #ifdef TCCR2
+      const uint16_t top = timer.n == 2 ? TERN(USE_OCR2A_AS_TOP, *timer.OCRnQ[0], 255) : *timer.ICRn;
-            + (timer.q == 2) // COM20 is on bit 4 of TCCR2, thus requires q + 1 in the macro
+      _SET_OCRnQ(timer.OCRnQ, timer.q, uint16_t(uint32_t(v) * top / v_size)); // Scale 8/16-bit v to top value
-          #endif
-        ), COM_CLEAR_SET + invert
-      );
-
-      uint16_t top = (timer.n == 2) ? TERN(USE_OCR2A_AS_TOP, *timer.OCRnQ[0], 255) : *timer.ICRn;
-      _SET_OCRnQ(timer.OCRnQ, timer.q, (v * top + v_size / 2) / v_size); // Scale 8/16-bit v to top value
     }
 
   #else

Marlin/src/HAL/AVR/fastio.h

@@ -211,32 +211,32 @@ enum ClockSource2 : char {
 
 // Set Clock Select bits
 // Ex: SET_CS3(PRESCALER_64);
+#ifdef TCCR2
+  #define HAS_TCCR2 1
+#endif
 #define _SET_CS(T,V) (TCCR##T##B = (TCCR##T##B & ~(0x7 << CS##T##0)) | ((int(V) & 0x7) << CS##T##0))
 #define _SET_CS0(V) _SET_CS(0,V)
 #define _SET_CS1(V) _SET_CS(1,V)
-#ifdef TCCR2
-  #define _SET_CS2(V) (TCCR2 = (TCCR2 & ~(0x7 << CS20)) | (int(V) << CS20))
-#else
-  #define _SET_CS2(V) _SET_CS(2,V)
-#endif
 #define _SET_CS3(V) _SET_CS(3,V)
 #define _SET_CS4(V) _SET_CS(4,V)
 #define _SET_CS5(V) _SET_CS(5,V)
 #define SET_CS0(V) _SET_CS0(CS_##V)
 #define SET_CS1(V) _SET_CS1(CS_##V)
-#ifdef TCCR2
+
+#if HAS_TCCR2
+  #define _SET_CS2(V) (TCCR2 = (TCCR2 & ~(0x7 << CS20)) | (int(V) << CS20))
   #define SET_CS2(V) _SET_CS2(CS2_##V)
 #else
+  #define _SET_CS2(V) _SET_CS(2,V)
   #define SET_CS2(V) _SET_CS2(CS_##V)
 #endif
+
 #define SET_CS3(V) _SET_CS3(CS_##V)
 #define SET_CS4(V) _SET_CS4(CS_##V)
 #define SET_CS5(V) _SET_CS5(CS_##V)
 #define SET_CS(T,V) SET_CS##T(V)
 // Runtime (see set_pwm_frequency)
-#define _SET_CSn(TCCRnQ, V) do{ \
+#define _SET_CSn(TCCRnQ, V) (*(TCCRnQ)[1] = (*(TCCRnQ[1]) & ~(0x7 << 0)) | ((int(V) & 0x7) << 0))
-    (*(TCCRnQ)[1] = (*(TCCRnQ[1]) & ~(0x7 << 0)) | ((int(V) & 0x7) << 0)); \
-  }while(0)
 
 // Set Compare Mode bits
 // Ex: SET_COMS(4,CLEAR_SET,CLEAR_SET,CLEAR_SET);
@@ -247,21 +247,15 @@ enum ClockSource2 : char {
 #define SET_COMC(T,V) SET_COM(T,C,V)
 #define SET_COMS(T,V1,V2,V3) do{ SET_COMA(T,V1); SET_COMB(T,V2); SET_COMC(T,V3); }while(0)
 // Runtime (see set_pwm_duty)
-#define _SET_COMnQ(TCCRnQ, Q, V) do{ \
+#define _SET_COMnQ(TCCRnQ, Q, V) (*(TCCRnQ)[0] = (*(TCCRnQ)[0] & ~(0x3 << (6-2*(Q)))) | (int(V) << (6-2*(Q))))
-    (*(TCCRnQ)[0] = (*(TCCRnQ)[0] & ~(0x3 << (6-2*(Q)))) | (int(V) << (6-2*(Q)))); \
-  }while(0)
 
 // Set OCRnQ register
 // Runtime (see set_pwm_duty):
-#define _SET_OCRnQ(OCRnQ, Q, V) do{ \
+#define _SET_OCRnQ(OCRnQ, Q, V) (*(OCRnQ)[Q] = int(V) & 0xFFFF)
-    (*(OCRnQ)[(Q)] = (0x0000) | (int(V) & 0xFFFF)); \
-  }while(0)
 
 // Set ICRn register (one per timer)
 // Runtime (see set_pwm_frequency)
-#define _SET_ICRn(ICRn, V) do{ \
+#define _SET_ICRn(ICRn, V) (*(ICRn) = int(V) & 0xFFFF)
-    (*(ICRn) = (0x0000) | (int(V) & 0xFFFF)); \
-  }while(0)
 
 // Set Noise Canceler bit
 // Ex: SET_ICNC(2,1)

Marlin/src/HAL/AVR/inc/SanityCheck.h

@@ -28,7 +28,7 @@
 /**
  * Checks for FAST PWM
  */
-#if ENABLED(FAST_PWM_FAN) && (ENABLED(USE_OCR2A_AS_TOP) && defined(TCCR2))
+#if ALL(FAST_PWM_FAN, USE_OCR2A_AS_TOP, HAS_TCCR2)
   #error "USE_OCR2A_AS_TOP does not apply to devices with a single output TIMER2"
 #endif
 

Marlin/src/HAL/AVR/pinsDebug.h

@@ -102,7 +102,7 @@ void PRINT_ARRAY_NAME(uint8_t x) {
       return true;                                              \
     } else return false
 
-
+#define ABTEST(N) defined(TCCR##N##A) && defined(COM##N##A1)
 
 /**
  * Print a pin's PWM status.
@@ -113,7 +113,7 @@ static bool pwm_status(uint8_t pin) {
 
   switch (digitalPinToTimer_DEBUG(pin)) {
 
-    #if defined(TCCR0A) && defined(COM0A1)
+    #if ABTEST(0)
       #ifdef TIMER0A
         #if !AVR_AT90USB1286_FAMILY  // not available in Teensyduino type IDEs
           PWM_CASE(0, A);
@@ -122,7 +122,7 @@ static bool pwm_status(uint8_t pin) {
       PWM_CASE(0, B);
     #endif
 
-    #if defined(TCCR1A) && defined(COM1A1)
+    #if ABTEST(1)
       PWM_CASE(1, A);
       PWM_CASE(1, B);
       #if defined(COM1C1) && defined(TIMER1C)
@@ -130,12 +130,12 @@ static bool pwm_status(uint8_t pin) {
       #endif
     #endif
 
-    #if defined(TCCR2A) && defined(COM2A1)
+    #if ABTEST(2)
       PWM_CASE(2, A);
       PWM_CASE(2, B);
     #endif
 
-    #if defined(TCCR3A) && defined(COM3A1)
+    #if ABTEST(3)
       PWM_CASE(3, A);
       PWM_CASE(3, B);
       #ifdef COM3C1
@@ -149,7 +149,7 @@ static bool pwm_status(uint8_t pin) {
       PWM_CASE(4, C);
     #endif
 
-    #if defined(TCCR5A) && defined(COM5A1)
+    #if ABTEST(5)
       PWM_CASE(5, A);
       PWM_CASE(5, B);
       PWM_CASE(5, C);
@@ -166,16 +166,16 @@ static bool pwm_status(uint8_t pin) {
 const volatile uint8_t* const PWM_other[][3] PROGMEM = {
     { &TCCR0A, &TCCR0B, &TIMSK0 },
     { &TCCR1A, &TCCR1B, &TIMSK1 },
-  #if defined(TCCR2A) && defined(COM2A1)
+  #if ABTEST(2)
     { &TCCR2A, &TCCR2B, &TIMSK2 },
   #endif
-  #if defined(TCCR3A) && defined(COM3A1)
+  #if ABTEST(3)
     { &TCCR3A, &TCCR3B, &TIMSK3 },
   #endif
   #ifdef TCCR4A
     { &TCCR4A, &TCCR4B, &TIMSK4 },
   #endif
-  #if defined(TCCR5A) && defined(COM5A1)
+  #if ABTEST(5)
     { &TCCR5A, &TCCR5B, &TIMSK5 },
   #endif
 };
@@ -195,11 +195,11 @@ const volatile uint8_t* const PWM_OCR[][3] PROGMEM = {
    { (const uint8_t*)&OCR1A, (const uint8_t*)&OCR1B, 0 },
   #endif
 
-  #if defined(TCCR2A) && defined(COM2A1)
+  #if ABTEST(2)
     { &OCR2A, &OCR2B, 0 },
   #endif
 
-  #if defined(TCCR3A) && defined(COM3A1)
+  #if ABTEST(3)
     #ifdef COM3C1
       { (const uint8_t*)&OCR3A, (const uint8_t*)&OCR3B, (const uint8_t*)&OCR3C },
     #else
@@ -211,7 +211,7 @@ const volatile uint8_t* const PWM_OCR[][3] PROGMEM = {
     { (const uint8_t*)&OCR4A, (const uint8_t*)&OCR4B, (const uint8_t*)&OCR4C },
   #endif
 
-  #if defined(TCCR5A) && defined(COM5A1)
+  #if ABTEST(5)
     { (const uint8_t*)&OCR5A, (const uint8_t*)&OCR5B, (const uint8_t*)&OCR5C },
   #endif
 };
@@ -281,7 +281,7 @@ void timer_prefix(uint8_t T, char L, uint8_t N) {  // T - timer    L - pwm  N -
 static void pwm_details(uint8_t pin) {
   switch (digitalPinToTimer_DEBUG(pin)) {
 
-    #if defined(TCCR0A) && defined(COM0A1)
+    #if ABTEST(0)
       #ifdef TIMER0A
         #if !AVR_AT90USB1286_FAMILY  // not available in Teensyduino type IDEs
           case TIMER0A: timer_prefix(0, 'A', 3); break;
@@ -290,7 +290,7 @@ static void pwm_details(uint8_t pin) {
       case TIMER0B: timer_prefix(0, 'B', 3); break;
     #endif
 
-    #if defined(TCCR1A) && defined(COM1A1)
+    #if ABTEST(1)
       case TIMER1A: timer_prefix(1, 'A', 4); break;
       case TIMER1B: timer_prefix(1, 'B', 4); break;
       #if defined(COM1C1) && defined(TIMER1C)
@@ -298,12 +298,12 @@ static void pwm_details(uint8_t pin) {
       #endif
     #endif
 
-    #if defined(TCCR2A) && defined(COM2A1)
+    #if ABTEST(2)
       case TIMER2A: timer_prefix(2, 'A', 3); break;
       case TIMER2B: timer_prefix(2, 'B', 3); break;
     #endif
 
-    #if defined(TCCR3A) && defined(COM3A1)
+    #if ABTEST(3)
       case TIMER3A: timer_prefix(3, 'A', 4); break;
       case TIMER3B: timer_prefix(3, 'B', 4); break;
       #ifdef COM3C1
@@ -317,7 +317,7 @@ static void pwm_details(uint8_t pin) {
       case TIMER4C: timer_prefix(4, 'C', 4); break;
     #endif
 
-    #if defined(TCCR5A) && defined(COM5A1)
+    #if ABTEST(5)
       case TIMER5A: timer_prefix(5, 'A', 4); break;
       case TIMER5B: timer_prefix(5, 'B', 4); break;
       case TIMER5C: timer_prefix(5, 'C', 4); break;
@@ -351,7 +351,6 @@ static void pwm_details(uint8_t pin) {
   #endif
 } // pwm_details
 
-
 #ifndef digitalRead_mod                   // Use Teensyduino's version of digitalRead - it doesn't disable the PWMs
   int digitalRead_mod(const int8_t pin) { // same as digitalRead except the PWM stop section has been removed
     const uint8_t port = digitalPinToPort_DEBUG(pin);
@@ -397,3 +396,5 @@ static void pwm_details(uint8_t pin) {
 
 #define PRINT_PIN(p) do{ sprintf_P(buffer, PSTR("%3d "), p); SERIAL_ECHO(buffer); }while(0)
 #define PRINT_PIN_ANALOG(p) do{ sprintf_P(buffer, PSTR(" (A%2d)  "), DIGITAL_PIN_TO_ANALOG_PIN(pin)); SERIAL_ECHO(buffer); }while(0)
+
+#undef ABTEST

Marlin/src/feature/controllerfan.cpp

@@ -72,10 +72,14 @@ void ControllerFan::update() {
       ? settings.active_speed : settings.idle_speed
     );
 
+    #if ENABLED(FAN_SOFT_PWM)
+      thermalManager.soft_pwm_controller_speed = speed;
+    #else
       if (PWM_PIN(CONTROLLER_FAN_PIN))
         set_pwm_duty(pin_t(CONTROLLER_FAN_PIN), speed);
       else
-      WRITE(CONTROLLER_FAN_PIN, speed);
+        WRITE(CONTROLLER_FAN_PIN, speed > 0);
+    #endif
   }
 }
 

Marlin/src/lcd/menu/menu_configuration.cpp

@@ -266,10 +266,10 @@ void menu_advanced_settings();
   void menu_controller_fan() {
     START_MENU();
     BACK_ITEM(MSG_CONFIGURATION);
-    EDIT_ITEM_FAST(percent, MSG_CONTROLLER_FAN_IDLE_SPEED, &controllerFan.settings.idle_speed, _MAX(1, CONTROLLERFAN_SPEED_MIN) - 1, 255);
+    EDIT_ITEM_FAST(percent, MSG_CONTROLLER_FAN_IDLE_SPEED, &controllerFan.settings.idle_speed, CONTROLLERFAN_SPEED_MIN, 255);
     EDIT_ITEM(bool, MSG_CONTROLLER_FAN_AUTO_ON, &controllerFan.settings.auto_mode);
     if (controllerFan.settings.auto_mode) {
-      EDIT_ITEM_FAST(percent, MSG_CONTROLLER_FAN_SPEED, &controllerFan.settings.active_speed, _MAX(1, CONTROLLERFAN_SPEED_MIN) - 1, 255);
+      EDIT_ITEM_FAST(percent, MSG_CONTROLLER_FAN_SPEED, &controllerFan.settings.active_speed, CONTROLLERFAN_SPEED_MIN, 255);
       EDIT_ITEM(uint16_4, MSG_CONTROLLER_FAN_DURATION, &controllerFan.settings.duration, 0, 4800);
     }
     END_MENU();

Marlin/src/module/temperature.cpp

@@ -41,6 +41,10 @@
   #include "../feature/spindle_laser.h"
 #endif
 
+#if ENABLED(USE_CONTROLLER_FAN)
+  #include "../feature/controllerfan.h"
+#endif
+
 #if ENABLED(EMERGENCY_PARSER)
   #include "motion.h"
 #endif
@@ -302,6 +306,10 @@ PGMSTR(str_t_heating_failed, STR_T_HEATING_FAILED);
   uint8_t Temperature::coolerfan_speed; // = 0
 #endif
 
+#if BOTH(FAN_SOFT_PWM, USE_CONTROLLER_FAN)
+  uint8_t Temperature::soft_pwm_controller_speed;
+#endif
+
 // Init fans according to whether they're native PWM or Software PWM
 #ifdef BOARD_OPENDRAIN_MOSFETS
   #define _INIT_SOFT_FAN(P) OUT_WRITE_OD(P, FAN_INVERTING ? LOW : HIGH)
@@ -3021,6 +3029,10 @@ void Temperature::isr() {
     static SoftPWM soft_pwm_cooler;
   #endif
 
+  #if BOTH(FAN_SOFT_PWM, USE_CONTROLLER_FAN)
+    static SoftPWM soft_pwm_controller;
+  #endif
+
   #define WRITE_FAN(n, v) WRITE(FAN##n##_PIN, (v) ^ FAN_INVERTING)
 
   #if DISABLED(SLOW_PWM_HEATERS)
@@ -3056,6 +3068,10 @@ void Temperature::isr() {
         _PWM_MOD(COOLER, soft_pwm_cooler, temp_cooler);
       #endif
 
+      #if BOTH(USE_CONTROLLER_FAN, FAN_SOFT_PWM)
+        WRITE(CONTROLLER_FAN_PIN, soft_pwm_controller.add(pwm_mask, soft_pwm_controller_speed));
+      #endif
+
       #if ENABLED(FAN_SOFT_PWM)
         #define _FAN_PWM(N) do{                                     \
           uint8_t &spcf = soft_pwm_count_fan[N];                    \
@@ -3132,6 +3148,9 @@ void Temperature::isr() {
         #if HAS_FAN7
           if (soft_pwm_count_fan[7] <= pwm_count_tmp) WRITE_FAN(7, LOW);
         #endif
+        #if ENABLED(USE_CONTROLLER_FAN)
+          if (soft_pwm_controller.count <= pwm_count_tmp) WRITE(CONTROLLER_FAN_PIN, LOW);
+        #endif
       #endif
     }
 

Marlin/src/module/temperature.h

@@ -387,6 +387,10 @@ class Temperature {
                      soft_pwm_count_fan[FAN_COUNT];
     #endif
 
+    #if BOTH(FAN_SOFT_PWM, USE_CONTROLLER_FAN)
+      static uint8_t soft_pwm_controller_speed;
+    #endif
+
     #if ENABLED(PREVENT_COLD_EXTRUSION)
       static bool allow_cold_extrude;
       static celsius_t extrude_min_temp;