smarter speed logic

README.md

@@ -29,9 +29,16 @@ H_RECUP_MODE = 12, // 0=na cas, 1=na teplotu (experimentalni)
 H_RECUP_TIME = 13, // pokud na cas, pak toho je cas rekuperace
 H_RECUP_TIME_MIN = 14, // na teplotu - spodni limit
 H_RECUP_TIME_MAX = 15, // na teplotu - horni limit
-H_RECUP_FACTOR = 16, // na teplotu - faktor, 80% = foukej dokud delta teplot neklesne o 80%
+// 16 - reserved
 H_MIN_POWER = 17, // min povoleny vykon motoru
 
+H_T_IN_MIN = 18,
+H_T_IN_MAX = 19,
+// these don't work in summer mode:
+H_T_STOPDELTA_IN = 20,
+H_T_STOPDELTA_OUT = 21,
+H_T_STOP_SPEED = 22,
+
 // Hardware settings (don't need to change once set correctly)
 H_RAMP_TIME = 30, // doba rozbehu nebo zastaveni motoru
 H_BLIND_TIME = 31, // doba otevreni roletky
@@ -51,7 +58,7 @@ Je take zrcadleno v holding mape s ofsetem 1000 (read-only)
 // napr. 3 = jsou platne jen T_{IN,OUT}_INST
 I_T_VALIDITY = 1, 
 
-I_T_IN_INST = 2,
+I_T_IN_INST = 2, // teplota x100 (C)
 I_T_OUT_INST = 3,
 I_T_INDOOR = 4,
 I_T_OUTDOOR = 5,

main/actuators.c

@@ -145,12 +145,16 @@ void act_init()
     led_init();
 }
 
-int16_t act_temp1()
+cels_t act_temp1()
 {
     return gTempSensors[0];
 }
 
-int16_t act_temp2()
+cels_t act_temp2()
 {
     return gTempSensors[1];
 }
+
+uint16_t act_temps_serial() {
+    return gTempsSerial;
+}

main/actuators.h

@@ -7,6 +7,7 @@
 
 #include <stdbool.h>
 #include <stdint.h>
+#include "recup_types.h"
 
 enum motor_direction {
     MOTOR_DIR_IN = 0,
@@ -17,19 +18,20 @@ struct actuators_status {
     enum motor_direction dir;
     bool blind;
     bool led;
-    uint16_t power;
+    perc_t power;
 };
 
 extern struct actuators_status gAct;
 
 void act_init();
-void act_motor_power_set(uint16_t perc);
+void act_motor_power_set(perc_t perc);
 void act_motor_direction_set(enum motor_direction dir);
 void act_blind_set(bool open);
 void act_led_set(bool on);
 void act_statusled_set(bool on);
 
-int16_t act_temp1();
+cels_t act_temp1();
-int16_t act_temp2();
+cels_t act_temp2();
+uint16_t act_temps_serial();
 
 #endif //FANCTL_ACTUATORS_H

main/fancontrol.c

@@ -13,13 +13,15 @@
 
 const char *TAG = "fc";
 
-#define UNIDIR_T_MEAS_PERIOD 15 /* s */
+#define UNIDIR_T_MEAS_PERIOD 60
 struct FanControlState gState = {};
 
 static void timerCallback();
 
 static void invalidate_temps();
 
+static float absf(float f);
+
 void settings_blind_time_set(uint16_t blind_time)
 {
     // if the blind is surely at the end
@@ -85,13 +87,39 @@ static const char * vent_mode_labels[] = {
         [VENT_MODE_RECUP] = "RECUP",
 };
 
-static const char * recup_mode_labels[] = {
+//static const char * recup_mode_labels[] = {
-        [RECUP_MODE_TIME] = "TIME",
+//        [RECUP_MODE_TIME] = "TIME",
-        [RECUP_MODE_TEMP] = "TEMP",
+//        [RECUP_MODE_TEMP] = "TEMP",
-};
+//};
 
 static void timerCallback()
 {
+    // Measure temperatures
+    cels_t tin = act_temp1();
+    cels_t tout = act_temp2();
+
+    uint16_t old_tempSerial = gState.tempSerial;
+//    float old_tin = gState.t_actual_in;
+//    float old_tout = gState.t_actual_out;
+
+    gState.tempSerial = act_temps_serial();
+    gState.t_actual_in = tin;
+    gState.t_actual_out = tout;
+
+    gState.valid_t_actual_in = gState.valid_t_actual_out = tempSensorsOk;
+
+    if (gState.tempSerial != old_tempSerial) {
+        // measuring speed of temp change
+        for (int i = NUM_PREVIOUS_T_INS - 1; i > 0; i--) {
+            gState.previous_t_ins[i] = gState.previous_t_ins[i - 1];
+        }
+        if (gState.real_direction == MOTOR_DIR_IN) {
+            gState.previous_t_ins[0] = tin;
+        } else {
+            gState.previous_t_ins[0] = tout;
+        }
+    }
+
     // posun rolety
     if (gAct.blind) {
         if (gState.blind_position < gSettings.blind_time) {
@@ -115,7 +143,9 @@ static void timerCallback()
                 gState.ramp++;
             }
         }
-        gState.run_time++;
+        if (gState.run_time < 0xFFFF) {
+            gState.run_time++;
+        }
     } else {
         if (gState.ramp > 0) {
             gState.ramp--;
@@ -141,7 +171,8 @@ static void timerCallback()
             if (gState.blind_position >= gSettings.blind_time) {
                 act_motor_power_set(gState.set_power);
             }
-            if (gState.ramp >= gSettings.ramp_time * 2) {
+            // some time is needed before the temperature means anything
+            if (gState.run_time >= UNIDIR_T_MEAS_PERIOD) {
                 end_temp_meas = true;
             }
             break;
@@ -151,7 +182,7 @@ static void timerCallback()
             if (gState.blind_position >= gSettings.blind_time) {
                 act_motor_power_set(gState.set_power);
             }
-            if (gState.ramp >= gSettings.ramp_time * 2) {
+            if (gState.run_time >= UNIDIR_T_MEAS_PERIOD) {
                 end_temp_meas = true;
             }
             break;
@@ -164,53 +195,49 @@ static void timerCallback()
                     // Stop condition
                     bool do_switch = false;
 
-                    // TODO questionable logic, verify
+                    // vyfukovaci strana trubice, libovona strana
+                    if (gState.real_direction == MOTOR_DIR_IN) {
+                        if (gState.t_actual_in <= gSettings.t_in_min || gState.t_actual_in >= gSettings.t_in_max) {
+                            ESP_LOGW(TAG, "Temp limit reached, change dir!");
+                            do_switch = true;
+                        }
+                    }
 
-                    if (gSettings.recup_mode == RECUP_MODE_TIME) {
+                    float t_output = gState.real_direction == MOTOR_DIR_OUT ? gState.t_actual_out : gState.t_actual_in;
-                        do_switch = gState.run_time >= gSettings.recup_time;
+                    float t_input = gState.real_direction == MOTOR_DIR_IN ? gState.t_actual_out : gState.t_actual_in;
-                    } else if (gState.run_time >= gSettings.max_recup_time) {
+                    float delta = absf(t_input - t_output);
-                        do_switch = true;
+
+                    if (gState.real_direction == MOTOR_DIR_IN) {
+                        if (delta < gSettings.t_stopdelta_in) {
+                            ESP_LOGW(TAG, "IN stop delta reached, change dir!");
+                            do_switch = true;
+                        }
                     } else {
-                        // temp-based switching - magic(tm)
+                        if (delta < gSettings.t_stopdelta_out) {
-                        // Delta = IN - OUT
+                            ESP_LOGW(TAG, "OUT stop delta reached, change dir!");
-                        const int16_t ideal_delta = gState.t_indoor - gState.t_outdoor;
+                            do_switch = true;
-                        int16_t stop_delta = ((int32_t) ideal_delta
-                                              * (int32_t) (100 - gSettings.recup_factor)) / 100;
-                        int16_t delta = 0;
-                        bool allow_temp_switch = false;
-
-                        if (gState.real_direction == MOTOR_DIR_OUT) {
-                            if (gState.valid_t_indoor && gState.valid_t_exhaust && gState.valid_t_outdoor) {
-                                delta = gState.t_indoor - gState.t_exhaust;
-                                allow_temp_switch = true;
-                            }
-                        } else {
-                            // IN
-                            if (gState.valid_t_inflow && gState.valid_t_indoor && gState.valid_t_outdoor) {
-                                delta = gState.t_inflow - gState.t_outdoor;
-                                allow_temp_switch = true;
-                            }
                         }
+                    }
 
-                        ESP_LOGI(TAG, "Delta now %d, max %d, stop %d (RF %d%%), allow_switch %d Cx10", delta, ideal_delta, stop_delta, gSettings.recup_factor, allow_temp_switch);
+                    if (gSettings.recup_mode == RECUP_MODE_TIME) {
+                        if (gState.run_time >= gSettings.recup_time) {
+                            ESP_LOGW(TAG, "Recup time elapsed, change dir!");
+                            do_switch = true;
+                        }
+                    } else {
+                        if (gState.run_time >= gSettings.max_recup_time) {
+                            ESP_LOGW(TAG, "Max time elapsed, change dir!");
+                            // Max time elapsed, switch even if the condition was not reached
+                            do_switch = true;
+                        } else {
+                            if (!gSettings.summer_mode) {
+                                // expecting some change in temps
+                                float speed = absf(gState.previous_t_ins[NUM_PREVIOUS_T_INS - 1] - gState.previous_t_ins[0]) / (float)NUM_PREVIOUS_T_INS;
 
-                        if (allow_temp_switch) {
+                                if (speed < gSettings.t_stop_speed) {
-                            if (gSettings.summer_mode) {
+                                    ESP_LOGW(TAG, "Near-equilibrium reached, change dir!");
-                                if (ideal_delta < 0) {
+                                    do_switch = true;
-                                    // 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)
                             }
                         }
                     }
@@ -242,15 +269,6 @@ static void timerCallback()
         gState.instantaneous_vent_mode = gState.effective_vent_mode;
     }
 
-    // Measure temperatures
-    int16_t t1 = act_temp1();
-    int16_t t2 = act_temp2();
-
-    gState.t_actual_in = t1;
-    gState.t_actual_out = t2;
-
-    gState.valid_t_actual_in = gState.valid_t_actual_out = tempSensorsOk;
-
     if (end_temp_meas) {
         switch (gState.real_direction) {
             case MOTOR_DIR_IN:
@@ -273,29 +291,33 @@ static void timerCallback()
     }
 
     ESP_LOGI(TAG,
-            "%s (ef %s, inst %s), rt %ds %d%%m, Tid %d%s, Tod %d%s, Tit %d%s, Teh %d%s, T1 %d%s, T2 %d%s Cx10",
+            "%s (%s), B%ds, M%ds, %d%%, Tid %.2f%s, Tod %.2f%s, Tit %.2f%s, Teh %.2f%s, T1 %.2f%s, T2 %.2f%s C",
-            vent_mode_labels[gState.set_vent_mode], vent_mode_labels[gState.effective_vent_mode], vent_mode_labels[gState.instantaneous_vent_mode],
+            vent_mode_labels[gState.set_vent_mode], vent_mode_labels[gState.instantaneous_vent_mode],
+            gState.blind_position,
             gState.run_time,
             gAct.power,
 
-            gState.t_indoor,
+            gState.t_indoor, gState.valid_t_indoor ? "" : "!",
-            gState.valid_t_indoor ? "" : "!",
+            gState.t_outdoor, gState.valid_t_outdoor ? "" : "!",
-            gState.t_outdoor,
+            gState.t_inflow, gState.valid_t_inflow ? "" : "!",
-            gState.valid_t_outdoor ? "" : "!",
+            gState.t_exhaust, gState.valid_t_exhaust ? "" : "!",
-            gState.t_inflow,
+            gState.t_actual_in, gState.valid_t_actual_in ? "" : "!",
-            gState.valid_t_inflow ? "" : "!",
+            gState.t_actual_out, gState.valid_t_actual_out ? "" : "!"
-            gState.t_exhaust,
-            gState.valid_t_exhaust ? "" : "!",
-            gState.t_actual_in,
-            gState.valid_t_actual_in ? "" : "!",
-            gState.t_actual_out,
-            gState.valid_t_actual_out ? "" : "!"
     );
 }
 
+static float absf(float f)
+{
+    if (f < 0) {
+        return -f;
+    } else {
+        return f;
+    }
+}
+
 void fan_set_vent_mode(enum ventilation_mode mode)
 {
-    ESP_LOGI(TAG, "Set vent mode = %d", mode);
+    ESP_LOGI(TAG, "Set vent mode = %s", vent_mode_labels[mode]);
 
     if (mode == gState.set_vent_mode) {
         return;
@@ -323,7 +345,7 @@ static void invalidate_temps()
     gState.valid_t_actual_out = false;
 }
 
-void fan_set_power(uint16_t power)
+void fan_set_power(perc_t power)
 {
     ESP_LOGI(TAG, "Set power = %d%%", power);
 

main/fancontrol.h

@@ -27,13 +27,14 @@ enum recup_mode {
     RECUP_MODE_TEMP = 1,
 };
 
+#define NUM_PREVIOUS_T_INS 5
 
 struct FanControlState {
     /**
      * Power requested trough register or as the default value.
      * This value stays unchanged even if stopped, unlike gAct.power which reflects the actual output.
      */
-    uint16_t set_power;
+    perc_t set_power;
     /**
      * rezim ventilace. Use fan_set_vent_mode() to change it!
      */
@@ -49,16 +50,19 @@ struct FanControlState {
     bool valid_t_actual_in;
     bool valid_t_actual_out;
 
-    int16_t t_indoor;
+    cels_t t_indoor;
-    int16_t t_outdoor;
+    cels_t t_outdoor;
-    int16_t t_inflow;
+    cels_t t_inflow;
-    int16_t t_exhaust;
+    cels_t t_exhaust;
 
-    int16_t t_actual_in;
+    uint16_t tempSerial;
-    int16_t t_actual_out;
+    cels_t t_actual_in;
+    cels_t t_actual_out;
+    // buffer used to calculate the current temp change speed
+    cels_t previous_t_ins[NUM_PREVIOUS_T_INS];
 
-    uint16_t real_recup_time_in;
+    secs_t real_recup_time_in;
-    uint16_t real_recup_time_out;
+    secs_t real_recup_time_out;
 
     // Private
     /**
@@ -73,27 +77,27 @@ struct FanControlState {
      * Poloha roletky, 0<->blind_time, inkrement/dekrement 1 za sekundu.
      * Pri zmene blind_time se musi hodnota aktualizovat, pokud je na doraze nebo za.
      */
-    uint16_t blind_position;
+    secs_t blind_position;
     /**
      * Cas chodu motoru v aktualnim smeru, inkrement 1 za sekundu.
      */
-    uint16_t run_time;
+    secs_t run_time;
     /**
      * "stav chodu motoru". 0=stop, ramp_time = jede.
      */
-    uint16_t ramp;
+    secs_t ramp;
 
     // helper counters that increment hour counters when overflow
-    uint16_t uptime_secs;
+    secs_t uptime_secs;
-    uint16_t motor_secs;
+    hours_t motor_secs;
 
-    uint16_t uptime_hours;
+    secs_t uptime_hours;
-    uint16_t motor_hours;
+    hours_t motor_hours;
 };
 
 extern struct FanControlState gState;
 
 void fan_set_vent_mode(enum ventilation_mode mode);
-void fan_set_power(uint16_t power);
+void fan_set_power(perc_t power);
 
 #endif //FANCTL_FANCONTROL_H

main/mbiface.c

@@ -1,4 +1,5 @@
 #include <esp_log.h>
+#include <math.h>
 #include "mbiface.h"
 #include "socket_server.h"
 #include "tasks.h"
@@ -29,8 +30,13 @@ enum HoldingRegisters {
   H_RECUP_TIME = 13,
   H_RECUP_TIME_MIN = 14,
   H_RECUP_TIME_MAX = 15,
-  H_RECUP_FACTOR = 16,
+//  H_RECUP_FACTOR = 16,
   H_MIN_POWER = 17,
+  H_T_IN_MIN = 18,
+  H_T_IN_MAX = 19,
+  H_T_STOPDELTA_IN = 20,
+  H_T_STOPDELTA_OUT = 21,
+  H_T_STOP_SPEED = 22,
 
   // Hardware settings (don't need to change once set correctly)
   H_RAMP_TIME = 30,
@@ -97,6 +103,14 @@ void endOfAccess(ModbusSlave_t *ms) {
     //
 }
 
+union ui16 {
+  uint16_t u;
+  uint16_t i;
+};
+
+#define cels2reg(cels) (((union ui16) { .i = ((int16_t) roundf((cels) * 100.0f)) }).u)
+#define reg2cels(regv) (((float) ((union ui16) { .u = (regv) }).i) / 100.0f)
+
 ModbusException_t ri(ModbusSlave_t *pSlave, uint16_t ref, uint16_t *pValue) {
     ESP_LOGD(TAG, "Read input %d", ref);
     uint16_t scratch16 = 0;
@@ -119,22 +133,22 @@ ModbusException_t ri(ModbusSlave_t *pSlave, uint16_t ref, uint16_t *pValue) {
             *pValue = scratch16;
             break;
         case I_T_IN_INST:
-            *pValue = gState.t_actual_in;
+            *pValue = cels2reg(gState.t_actual_in);
             break;
         case I_T_OUT_INST:
-            *pValue = gState.t_actual_out;
+            *pValue = cels2reg(gState.t_actual_out);
             break;
         case I_T_INDOOR:
-            *pValue = gState.t_indoor;
+            *pValue = cels2reg(gState.t_indoor);
             break;
         case I_T_OUTDOOR:
-            *pValue = gState.t_outdoor;
+            *pValue = cels2reg(gState.t_outdoor);
             break;
         case I_T_INFLOW:
-            *pValue = gState.t_inflow;
+            *pValue = cels2reg(gState.t_inflow);
             break;
         case I_T_EXHAUST:
-            *pValue = gState.t_exhaust;
+            *pValue = cels2reg(gState.t_exhaust);
             break;
         case I_MODE_INST:
             *pValue = gState.instantaneous_vent_mode;
@@ -166,7 +180,9 @@ ModbusException_t ri(ModbusSlave_t *pSlave, uint16_t ref, uint16_t *pValue) {
             break;
 
         default:
-            return MB_EXCEPTION_ILLEGAL_DATA_ADDRESS;
+            // this allows Bridge reading
+            return 0;
+            //return MB_EXCEPTION_ILLEGAL_DATA_ADDRESS;
     }
 
     return MB_EXCEPTION_OK;
@@ -206,9 +222,26 @@ ModbusException_t rh(ModbusSlave_t *pSlave, uint16_t ref, uint16_t *pValue) {
         case H_RECUP_TIME_MAX:
             *pValue = gSettings.max_recup_time;
             break;
-        case H_RECUP_FACTOR:
+//        case H_RECUP_FACTOR:
-            *pValue = gSettings.recup_factor;
+//            *pValue = gSettings.recup_factor;
+//            break;
+
+        case H_T_IN_MIN:
+            *pValue = cels2reg(gSettings.t_in_min);
+            break;
+        case H_T_IN_MAX:
+            *pValue = cels2reg(gSettings.t_in_max);
+            break;
+        case H_T_STOPDELTA_IN:
+            *pValue = cels2reg(gSettings.t_stopdelta_in);
+            break;
+        case H_T_STOPDELTA_OUT:
+            *pValue = cels2reg(gSettings.t_stopdelta_out);
             break;
+        case H_T_STOP_SPEED:
+            *pValue = cels2reg(gSettings.t_stop_speed);
+            break;
+
         case H_RAMP_TIME:
             *pValue = gSettings.ramp_time;
             break;
@@ -230,7 +263,8 @@ ModbusException_t rh(ModbusSlave_t *pSlave, uint16_t ref, uint16_t *pValue) {
                 return ri(pSlave, ref - INPUT_REG_MIRROR_IN_HOLDING_BASE_ADDR, pValue);
             }
 
-            return MB_EXCEPTION_ILLEGAL_DATA_ADDRESS;
+            return 0;
+            //return MB_EXCEPTION_ILLEGAL_DATA_ADDRESS;
     }
 
     return MB_EXCEPTION_OK;
@@ -251,6 +285,7 @@ static bool is_valid_vent_mode(int value) {
 
 ModbusException_t wh(ModbusSlave_t *pSlave, uint16_t ref, uint16_t value) {
     ESP_LOGD(TAG, "Write holding %d := %02x", ref, value);
+    float f;
 
     switch (ref) {
         case H_MODE:
@@ -311,13 +346,49 @@ ModbusException_t wh(ModbusSlave_t *pSlave, uint16_t ref, uint16_t value) {
             gSettings.max_recup_time = value;
             settings_persist(SETTINGS_max_recup_time);
             break;
-        case H_RECUP_FACTOR:
+//        case H_RECUP_FACTOR:
-            if (value > 100) {
+//            if (value > 100) {
+//                return MB_EXCEPTION_ILLEGAL_DATA_VALUE;
+//            }
+//            gSettings.recup_factor = value;
+//            settings_persist(SETTINGS_recup_factor);
+//            break;
+
+        case H_T_IN_MIN:
+            f = reg2cels(value);
+            gSettings.t_in_min = f;
+            settings_persist(SETTINGS_t_in_min);
+            break;
+        case H_T_IN_MAX:
+            f = reg2cels(value);
+            gSettings.t_in_max = f;
+            settings_persist(SETTINGS_t_in_max);
+            break;
+        case H_T_STOPDELTA_IN:
+            f = reg2cels(value);
+            if (f < 0) {
+                return MB_EXCEPTION_ILLEGAL_DATA_VALUE;
+            }
+            gSettings.t_stopdelta_in = f;
+            settings_persist(SETTINGS_t_stopdelta_in);
+            break;
+        case H_T_STOPDELTA_OUT:
+            f = reg2cels(value);
+            if (f < 0) {
                 return MB_EXCEPTION_ILLEGAL_DATA_VALUE;
             }
-            gSettings.recup_factor = value;
+            gSettings.t_stopdelta_out = f;
-            settings_persist(SETTINGS_recup_factor);
+            settings_persist(SETTINGS_t_stopdelta_out);
             break;
+        case H_T_STOP_SPEED:
+            f = reg2cels(value);
+            if (f < 0) {
+                return MB_EXCEPTION_ILLEGAL_DATA_VALUE;
+            }
+            gSettings.t_stop_speed = f;
+            settings_persist(SETTINGS_t_stop_speed);
+            break;
+
         case H_RAMP_TIME:
             gSettings.ramp_time = value;
             settings_persist(SETTINGS_ramp_time);

main/onewires.c

@@ -7,6 +7,7 @@
 #include "owb.h"
 #include "ds18b20.h"
 #include "settings.h"
+#include "recup_types.h"
 
 static const char* TAG="1w";
 
@@ -14,18 +15,20 @@ static owb_rmt_driver_info s_rmt_driver_info[2] = {};
 static OneWireBus * sBuses[2] = {};
 static DS18B20_Info *sDevs[2] = {};
 
-volatile int16_t gTempSensors[2] = {};
+volatile float gTempSensors[2] = {};
 volatile bool tempSensorsOk = false;
+volatile uint16_t gTempsSerial = 0;
 
 static void owtask(void *dummy) {
     while (1) {
-        int16_t a = 0, b = 0;
+        cels_t a = 0, b = 0;
         int rv = read_onewires(&a, &b);
         tempSensorsOk = (rv == 0);
 
-        ESP_LOGI(TAG, "t1 %d, t2 %d Cx10", a, b);
         gTempSensors[0] = a;
         gTempSensors[1] = b;
+        gTempsSerial++;
+        ESP_LOGI(TAG, "t1 %.2f, t2 %.2f C", a, b);
     }
 }
 
@@ -45,7 +48,7 @@ void onewires_setup()
     xTaskCreate(owtask, "1w", ONEWIRES_TASK_STACK, NULL, ONEWIRES_TASK_PRIO, NULL);
 }
 
-int read_onewires(int16_t *a, int16_t *b)
+int read_onewires(cels_t *a, cels_t *b)
 {
     for (int i = 0; i < 2; i++) {
         ds18b20_convert_all(sBuses[i]);
@@ -61,8 +64,8 @@ int read_onewires(int16_t *a, int16_t *b)
         errors[i] = ds18b20_read_temp(sDevs[i], &readings[i]);
     }
 
-    int16_t val1 = (int16_t) roundf(readings[0] * 10);
+    cels_t val1 = (cels_t) readings[0];
-    int16_t val2 = (int16_t) roundf(readings[1] * 10);
+    cels_t val2 = (cels_t) readings[1];
 
     if (gSettings.swap_temps) {
         *a = val2;

main/onewires.h

@@ -6,12 +6,14 @@
 #define ONEWIRES_H
 
 #include <stdint.h>
+#include "recup_types.h"
 
 void onewires_setup();
 
-int read_onewires(int16_t *a, int16_t *b);
+int read_onewires(cels_t *a, cels_t *b);
 
-extern volatile int16_t gTempSensors[2];
+extern volatile cels_t gTempSensors[2];
 extern volatile bool tempSensorsOk;
+extern volatile uint16_t gTempsSerial;
 
 #endif //ONEWIRES_H

main/recup_types.h

@@ -0,0 +1,15 @@
+/**
+ * Commonly used types
+ */
+
+#ifndef REKUPERATOR_RECUP_TYPES_H
+#define REKUPERATOR_RECUP_TYPES_H
+
+#include <stdint.h>
+
+typedef float cels_t;
+typedef uint16_t perc_t;
+typedef uint16_t secs_t;
+typedef uint16_t hours_t;
+
+#endif //REKUPERATOR_RECUP_TYPES_H

main/settings.c

@@ -37,7 +37,6 @@ union fu {
     uint32_t u;
 };
 
-#if 0
 /** Read float from NVS. See `nvs_get_u32` for more info. */
 static esp_err_t nvs_get_f32 (nvs_handle_t handle, const char* key, float* out_value) {
     uint32_t u = 0;
@@ -61,7 +60,6 @@ static esp_err_t nvs_set_f32 (nvs_handle_t handle, const char* key, float value)
     };
     return nvs_set_u32(handle, key, reinterpret.u);
 }
-#endif
 
 /** Dummy read from NVS; placeholder for XTABLE entries with manually implemented getters */
 static esp_err_t nvs_get_none(nvs_handle handle, const char* key, void* out_value) {

main/settings.h

@@ -41,7 +41,6 @@ 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 ,          , 180        , true  , u16  , &) /* seconds */ \
     X(uint16_t      , ramp_time      ,          , 6          , true  , u16  , &) /* cas rozjezdu nebo zastaveni motoru (s) */ \
@@ -51,7 +50,14 @@ extern nvs_handle g_nvs_storage;
     X(uint16_t      , min_power      ,          , 5          , true  , u16  , &) /* min power % */ \
     X(bool          , summer_mode    ,          , 0          , true  , bool  , &) /* rezim po zapnuti napajeni */ \
     X(bool          , swap_temps     ,          , 0          , true  , bool  , &) /* swap t0/t1 */ \
-    X(bool          , swap_pwm_dir   ,          , 0          , true  , bool  , &) /* swap pwm/dir signal */
+    X(bool          , swap_pwm_dir   ,          , 0          , true  , bool  , &) /* swap pwm/dir signal */ \
+    X(float         , t_in_min       ,          , 10         , true  , f32  , &)  /* minimalni teplota do mistnosti */ \
+    X(float         , t_in_max       ,          , 27         , true  , f32  , &)  /* maximalni teplota do mistnosti */ \
+    X(float         , t_stopdelta_in   ,          , 3          , true  , f32  , &)   /* delta when recuperation stops in IN mode */ \
+    X(float         , t_stopdelta_out  ,          , 1          , true  , f32  , &)   /* delta when recuperation stops in OUT mode */ \
+    X(float         , t_stop_speed   ,          , 0.025      , true  , f32  , &)   /* zastav rekuperaci, pokud zmena teploty na vystupni strane roste/klesa pomaleji nez X/sec */
+
+//  X(uint16_t      , recup_factor   ,          , 80         , true  , u16  , &) /* perc */
 
 enum settings_key_enum {
 #undef X