more logic and fixes, maybe buggy

main/actuators.c

@@ -76,6 +76,7 @@ static void motor_init() {
 }
 
 void act_motor_power_set(uint16_t perc) {
+    if (gAct.power == perc) return;
     if (perc > 0) {
         if (perc < gSettings.min_power) {
             perc = gSettings.min_power;
@@ -88,6 +89,7 @@ void act_motor_power_set(uint16_t perc) {
         ledc_set_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_1, duty);
         ledc_update_duty(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_1);
     } else {
+        gAct.power = 0;
         ledc_stop(LEDC_HIGH_SPEED_MODE, LEDC_CHANNEL_1, 0);
     }
 }

main/fancontrol.c

@@ -107,9 +107,64 @@ static void timerCallback(TimerHandle_t xTimer) {
             if (gState.blind_position >= gSettings.blind_time) {
                 act_motor_power_set(gState.set_power);
 
+                if (gState.real_direction == gAct.dir && gState.run_time >= gSettings.min_recup_time) {
                     // Stop condition
-                if (gState.real_direction == gAct.dir) {
+                    bool do_switch = false;
-                    if (gState.run_time >= gSettings.recup_time) {
+
+                    // TODO questionable logic, verify
+
+                    if (gSettings.recup_mode == RECUP_MODE_TIME) {
+                        do_switch = gState.run_time >= gSettings.recup_time;
+                    } else if (gState.run_time >= gSettings.max_recup_time) {
+                        do_switch = true;
+                    } else {
+                        // temp-based switching - magic(tm)
+                        const int16_t ideal_delta = gState.t_indoor - gState.t_outdoor;
+                        int16_t delta, stop_delta;
+                        bool allow_temp_switch = false;
+                        if (gState.real_direction == MOTOR_DIR_OUT) {
+                            delta = gState.t_indoor - gState.t_exhaust;
+                            // 100% factor = nadoraz
+                            stop_delta = ((int32_t)ideal_delta
+                                                        * (int32_t)(100 - gSettings.recup_factor)) / 100;
+                            // Delta = IN - OUT
+                            if (gState.valid_t_indoor && gState.valid_t_exhaust && gState.valid_t_outdoor) {
+                                allow_temp_switch = true;
+                            }
+                        } else {
+                            // IN
+                            delta = gState.t_inflow - gState.t_outdoor;
+                            // 100% factor = nadoraz
+                            stop_delta = ((int32_t)ideal_delta
+                                                        * (int32_t)(gSettings.recup_factor)) / 100;
+                            // Delta = IN - OUT
+                            if (gState.valid_t_intake && gState.valid_t_indoor && gState.valid_t_outdoor) {
+                                allow_temp_switch = true;
+                            }
+                        }
+
+                        if (allow_temp_switch) {
+                            if (gSettings.summer_mode) {
+                                if (ideal_delta < 0) {
+                                    // warmer outside, trying to keep cool in
+                                    if (delta >= stop_delta) {
+                                        do_switch = true;
+                                    }
+                                }
+                                // colder outside - no stopping (will run to max recup time)
+                            } else {
+                                if (ideal_delta > 0) {
+                                    // colder outside, trying to keep warmth in
+                                    if (delta <= stop_delta) {
+                                        do_switch = true;
+                                    }
+                                }
+                                // warmer outside - no stopping (will run to max recup time)
+                            }
+                        }
+                    }
+
+                    if (do_switch) {
                         // zmena smeru
                         gState.run_time = 0;
                         act_motor_direction_set(1 - gAct.dir);
@@ -132,12 +187,13 @@ static void timerCallback(TimerHandle_t xTimer) {
     }
 
     if (end_temp_meas) {
+        if (gState.t_aggr_cnt > 0) {
             uint16_t t1 = (uint16_t) (gState.t1_aggr / gState.t_aggr_cnt);
             uint16_t t2 = (uint16_t) (gState.t2_aggr / gState.t_aggr_cnt);
             switch (gState.real_direction) {
                 case MOTOR_DIR_IN:
                     gState.t_outdoor = t2;
-                gState.t_intake = t1;
+                    gState.t_inflow = t1;
                     gState.valid_t_outdoor = gState.valid_t_intake = true;
                     if (gState.effective_vent_mode == VENT_MODE_IN) {
                         gState.valid_t_indoor = gState.valid_t_exhaust = false;
@@ -152,6 +208,7 @@ static void timerCallback(TimerHandle_t xTimer) {
                     }
                     break;
             }
+        }
         gState.t1_aggr = gState.t2_aggr = gState.t_aggr_cnt = 0;
     }
 
@@ -185,8 +242,10 @@ void fan_set_vent_mode(enum ventilation_mode mode) {
 
     gState.set_vent_mode = mode;
     gState.t1_aggr = gState.t2_aggr = gState.t_aggr_cnt = 0;
-    if (gState.set_power != 0) {
+    if (gState.set_power != 0 || mode == VENT_MODE_FREE) {
         gState.effective_vent_mode = mode;
+    } else if (gState.set_power == 0) {
+        gState.effective_vent_mode = VENT_MODE_OFF;
     }
 
     if (mode == VENT_MODE_OFF || mode == VENT_MODE_FREE) {

main/fancontrol.h

@@ -18,6 +18,15 @@ enum ventilation_mode {
     VENT_MODE_RECUP = 7,
 };
 
+enum recup_mode {
+    /** stricly time based recuperation switching */
+    RECUP_MODE_TIME = 0,
+    /** Temperature-based recuperation switching
+     * (switch direction when further blowing won't save energy) */
+    RECUP_MODE_TEMP = 1,
+};
+
+
 struct FanControlState {
     /**
      * Power requested trough register or as the default value.
@@ -39,13 +48,13 @@ struct FanControlState {
     bool valid_t_actual_1;
     bool valid_t_actual_2;
 
-    uint16_t t_indoor;
+    int16_t t_indoor;
-    uint16_t t_outdoor;
+    int16_t t_outdoor;
-    uint16_t t_intake;
+    int16_t t_inflow;
-    uint16_t t_exhaust;
+    int16_t t_exhaust;
 
-    uint16_t t_actual_1;
+    int16_t t_actual_1;
-    uint16_t t_actual_2;
+    int16_t t_actual_2;
 
     // Private
     /**

main/settings.h

@@ -41,6 +41,9 @@ extern nvs_handle g_nvs_storage;
     X(uint32_t      , static_dns     ,          , 0x08080808 , true  , u32  , &) /* 8.8.8.8 */ \
     X(uint16_t      , recup_mode     ,          , 0          , true  , u16  , &) /* recuperator control mode - 0=time, 1=min time+temp equilibrium */ \
     X(uint16_t      , recup_time     ,          , 60         , true  , u16  , &) /* seconds */                                        \
+    X(uint16_t      , recup_factor   ,          , 80         , true  , u16  , &) /* perc */                                        \
+    X(uint16_t      , min_recup_time ,          , 30         , true  , u16  , &) /* seconds */ \
+    X(uint16_t      , max_recup_time ,          , 120        , true  , u16  , &) /* seconds */ \
     X(uint16_t      , ramp_time      ,          , 3          , true  , u16  , &) /* cas rozjezdu nebo zastaveni motoru (s) */ \
     X(uint16_t      , blind_time     ,          , 30         , true  , u16  , &) /* cas otevreni nebo zavreni rolety (s) */ \
     X(uint16_t      , initial_mode   ,          , 0          , true  , u16  , &) /* rezim po zapnuti napajeni */ \