321 lines
12 KiB
C
321 lines
12 KiB
C
#include "control.h"
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#include "esp_log.h"
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#include "esp_timer.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "inputs.h"
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#include "outputs.h"
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#include "safety.h"
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#include "sntp.h"
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#define PERIODIC_INTERVAL 1U // Run control loop every 1 second
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// Temperature thresholds
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#define RETURN_FLOW_TEMPERATURE_LOWER_LIMIT_DAY 30.0f
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#define RETURN_FLOW_TEMPERATURE_LOWER_LIMIT_NIGHT 25.0f
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#define CHAMBER_TEMPERATURE_TARGET 80.0f // Max cutoff temperature
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#define CHAMBER_TEMPERATURE_THRESHOLD 45.0f // Min threshold for burner enable
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#define SUMMER_MODE_TEMPERATURE_THRESHOLD_HIGH \
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20.0f // Summer mode will be activated
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#define SUMMER_MODE_TEMPERATURE_THRESHOLD_LOW \
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15.0f // Summer mode will be deactivated --> Heating starts
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#define CIRCULATION_PUMP_TEMPERATURE_THRESHOLD \
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30.0f // Min threshold of chamber for circulation pump enable
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#define BURNER_FAULT_DETECTION_THRESHOLD \
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(60U * 4U) // Burner fault detection after 4 minutes
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static const char *TAG = "smart-oil-heater-control-system-control";
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static eControlState sControlState = CONTROL_STARTING;
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// Control table for daily schedules
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static const sControlDay aControlTable[] = {
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{MONDAY,
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2U,
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{{{4, 45},
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RETURN_FLOW_TEMPERATURE_LOWER_LIMIT_DAY,
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CHAMBER_TEMPERATURE_TARGET},
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{{22, 0},
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RETURN_FLOW_TEMPERATURE_LOWER_LIMIT_NIGHT,
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CHAMBER_TEMPERATURE_TARGET}}},
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{TUESDAY,
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2U,
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{{{4, 45},
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RETURN_FLOW_TEMPERATURE_LOWER_LIMIT_DAY,
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CHAMBER_TEMPERATURE_TARGET},
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{{22, 0},
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RETURN_FLOW_TEMPERATURE_LOWER_LIMIT_NIGHT,
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CHAMBER_TEMPERATURE_TARGET}}},
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{WEDNESDAY,
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2U,
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{{{4, 45},
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RETURN_FLOW_TEMPERATURE_LOWER_LIMIT_DAY,
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CHAMBER_TEMPERATURE_TARGET},
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{{22, 0},
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RETURN_FLOW_TEMPERATURE_LOWER_LIMIT_NIGHT,
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CHAMBER_TEMPERATURE_TARGET}}},
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{THURSDAY,
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2U,
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{{{4, 45},
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RETURN_FLOW_TEMPERATURE_LOWER_LIMIT_DAY,
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CHAMBER_TEMPERATURE_TARGET},
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{{22, 0},
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RETURN_FLOW_TEMPERATURE_LOWER_LIMIT_NIGHT,
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CHAMBER_TEMPERATURE_TARGET}}},
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{FRIDAY,
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2U,
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{{{4, 45},
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RETURN_FLOW_TEMPERATURE_LOWER_LIMIT_DAY,
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CHAMBER_TEMPERATURE_TARGET},
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{{23, 0},
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RETURN_FLOW_TEMPERATURE_LOWER_LIMIT_NIGHT,
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CHAMBER_TEMPERATURE_TARGET}}},
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{SATURDAY,
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2U,
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{{{6, 45},
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RETURN_FLOW_TEMPERATURE_LOWER_LIMIT_DAY,
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CHAMBER_TEMPERATURE_TARGET},
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{{23, 30},
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RETURN_FLOW_TEMPERATURE_LOWER_LIMIT_NIGHT,
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CHAMBER_TEMPERATURE_TARGET}}},
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{SUNDAY,
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2U,
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{{{6, 45},
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RETURN_FLOW_TEMPERATURE_LOWER_LIMIT_DAY,
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CHAMBER_TEMPERATURE_TARGET},
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{{22, 30},
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RETURN_FLOW_TEMPERATURE_LOWER_LIMIT_NIGHT,
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CHAMBER_TEMPERATURE_TARGET}}},
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};
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static sControlTemperatureEntry currentControlEntry =
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aControlTable[0].aTemperatureEntries[0];
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// Function prototypes
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void taskControl(void *pvParameters);
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void findControlCurrentTemperatureEntry(void);
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void initControl(void) {
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BaseType_t taskCreated =
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xTaskCreate(taskControl, // Function to implement the task
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"taskControl", // Task name
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8192, // Stack size (in words, not bytes)
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NULL, // Parameters to the task function (none in this case)
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5, // Task priority (higher number = higher priority)
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NULL // Task handle (optional)
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);
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if (taskCreated == pdPASS) {
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ESP_LOGI(TAG, "Task created successfully!");
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} else {
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ESP_LOGE(TAG, "Failed to create task");
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}
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}
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void taskControl(void *pvParameters) {
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bool bHeatingInAction = false;
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bool bSummerMode = false;
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eBurnerState eBurnerState = BURNER_UNKNOWN;
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int64_t i64BurnerEnableTimestamp = esp_timer_get_time();
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while (1) {
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vTaskDelay(PERIODIC_INTERVAL * 1000U / portTICK_PERIOD_MS);
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// Check for safety faults
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if (getSafetyState() != SAFETY_NO_ERROR) {
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ESP_LOGW(TAG, "Control not possible due to safety fault!");
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sControlState = CONTROL_FAULT_SAFETY;
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if (bHeatingInAction) {
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ESP_LOGW(TAG, "Disabling burner due to safety fault");
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bHeatingInAction = false;
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setBurnerState(DISABLED);
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setSafetyControlState(ENABLED);
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}
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continue;
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}
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// Check for SNTP faults
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if (getSntpState() != SYNC_SUCCESSFUL) {
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ESP_LOGW(TAG, "Control not possible due to SNTP fault!");
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sControlState = CONTROL_FAULT_SNTP;
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if (bHeatingInAction) {
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ESP_LOGW(TAG, "Disabling burner due to SNTP fault");
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bHeatingInAction = false;
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setBurnerState(DISABLED);
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setSafetyControlState(ENABLED);
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}
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continue;
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}
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findControlCurrentTemperatureEntry();
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sControlTemperatureEntry currentControlEntry =
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getControlCurrentTemperatureEntry();
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if (getOutdoorTemperature().fDampedValue >=
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SUMMER_MODE_TEMPERATURE_THRESHOLD_HIGH) {
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bSummerMode = true;
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} else if (getOutdoorTemperature().fDampedValue <=
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SUMMER_MODE_TEMPERATURE_THRESHOLD_LOW) {
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bSummerMode = false;
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}
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// Enable burner if outdoor temperature is low and return flow temperature
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// is cooled down
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if (!bHeatingInAction && (eBurnerState != BURNER_FAULT)) {
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if (bSummerMode) {
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// ESP_LOGI(TAG, "Outdoor temperature too warm: Disabling heating");
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setBurnerState(DISABLED);
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setSafetyControlState(DISABLED);
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sControlState = CONTROL_OUTDOOR_TOO_WARM;
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} else if ((getReturnFlowTemperature().average60s.fValue <=
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currentControlEntry.fReturnFlowTemperature) &&
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(getChamberTemperature().fCurrentValue <=
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CHAMBER_TEMPERATURE_THRESHOLD)) {
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ESP_LOGI(TAG,
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"Enabling burner: Return flow temperature target reached");
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eBurnerState = BURNER_UNKNOWN;
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bHeatingInAction = true;
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setBurnerState(ENABLED);
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setSafetyControlState(ENABLED);
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i64BurnerEnableTimestamp = esp_timer_get_time();
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sControlState = CONTROL_HEATING;
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} else {
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// ESP_LOGI(TAG, "Return flow temperature too warm: Disabling heating");
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sControlState = CONTROL_RETURN_FLOW_TOO_WARM;
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}
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}
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// Disable burner if target temperature is reached or a fault occurred
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if (bHeatingInAction) {
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if ((getChamberTemperature().fCurrentValue >=
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currentControlEntry.fChamberTemperature) ||
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(getChamberTemperature().predict60s.fValue >=
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currentControlEntry.fChamberTemperature)) {
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ESP_LOGI(TAG, "Chamber target temperature reached: Disabling burner");
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bHeatingInAction = false;
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setBurnerState(DISABLED);
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setSafetyControlState(ENABLED);
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} else if (esp_timer_get_time() - i64BurnerEnableTimestamp >=
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BURNER_FAULT_DETECTION_THRESHOLD * 1000000U) {
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if (eBurnerState == BURNER_UNKNOWN) {
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if (getBurnerError() == FAULT) {
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// ESP_LOGW(TAG, "Burner fault detected: Disabling burner");
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bHeatingInAction = false;
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eBurnerState = BURNER_FAULT;
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sControlState = CONTROL_FAULT_BURNER;
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setBurnerState(DISABLED);
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setSafetyControlState(ENABLED);
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} else {
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// ESP_LOGI(TAG, "No burner fault detected: Marking burner as
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// fired");
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eBurnerState = BURNER_FIRED;
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}
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}
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}
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}
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// Manage circulation pump
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if (getChamberTemperature().fCurrentValue <=
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CIRCULATION_PUMP_TEMPERATURE_THRESHOLD) {
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// ESP_LOGI(TAG, "Burner cooled down: Disabling circulation pump");
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setCirculationPumpState(DISABLED);
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} else {
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// ESP_LOGI(TAG, "Burner heated: Enabling circulation pump");
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setCirculationPumpState(ENABLED);
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}
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} // End of while(1)
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}
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eControlState getControlState(void) { return sControlState; }
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eControlWeekday getControlCurrentWeekday(void) {
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time_t now;
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struct tm *timeinfo;
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time(&now);
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timeinfo = localtime(&now);
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int day = timeinfo->tm_wday;
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return (eControlWeekday)((day == 0) ? 6 : day - 1);
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}
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/**
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* @brief Finds the active temperature control entry for the current time.
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*
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* Searches through the weekly schedule to find the most recent entry
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* that should be active at the current date/time. Falls back to the
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* last entry in the week if no suitable entry is found.
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*/
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/**
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* @brief Finds the active temperature control entry for the current time.
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*
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* Searches through the weekly schedule to find the most recent entry
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* that should be active at the current date/time. Falls back to the
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* last entry in the week if no suitable entry is found.
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*/
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void findControlCurrentTemperatureEntry(void) {
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eControlWeekday currentDay = getControlCurrentWeekday();
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// Get current time
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time_t now;
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struct tm timeinfo;
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time(&now);
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localtime_r(&now, &timeinfo);
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int currentHour = timeinfo.tm_hour;
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int currentMinute = timeinfo.tm_min;
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//ESP_LOGI(TAG, "Searching for control entry - Day: %d, Time: %02d:%02d", currentDay, currentHour, currentMinute);
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// Search through all days and entries
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for (int dayIndex = 0; dayIndex < 7; dayIndex++) {
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const sControlDay* day = &aControlTable[dayIndex];
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for (int entryIndex = 0; entryIndex < day->entryCount; entryIndex++) {
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const sControlTemperatureEntry* entry = &day->aTemperatureEntries[entryIndex];
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// Check if this entry is in the future (next active entry)
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bool isFutureDay = (day->day > currentDay);
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bool isTodayFutureTime = (day->day == currentDay) &&
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((entry->timestamp.hour > currentHour) ||
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(entry->timestamp.hour == currentHour &&
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entry->timestamp.minute > currentMinute));
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if (isFutureDay || isTodayFutureTime) {
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// Found next scheduled entry, so determine the previous (active) one
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if (entryIndex > 0) {
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// Use previous entry from same day
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currentControlEntry = day->aTemperatureEntries[entryIndex - 1];
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} else if (dayIndex > 0) {
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// Use last entry from previous day
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const sControlDay* previousDay = &aControlTable[dayIndex - 1];
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currentControlEntry = previousDay->aTemperatureEntries[previousDay->entryCount - 1];
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} else {
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// First entry of the week - wrap to last entry of Sunday
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const sControlDay* sunday = &aControlTable[6];
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currentControlEntry = sunday->aTemperatureEntries[sunday->entryCount - 1];
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}
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/*
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ESP_LOGI(TAG, "Active entry found - Time: %02d:%02d, "
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"Return Temp: %lf, Chamber Temp: %lf",
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currentControlEntry.timestamp.hour,
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currentControlEntry.timestamp.minute,
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currentControlEntry.fReturnFlowTemperature,
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currentControlEntry.fChamberTemperature);
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*/
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return;
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}
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}
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}
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// If we reached here, current time is after all entries this week
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// Use the last entry (Sunday evening)
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const sControlDay* sunday = &aControlTable[6];
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currentControlEntry = sunday->aTemperatureEntries[sunday->entryCount - 1];
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ESP_LOGI(TAG, "Using last entry of week - Time: %02d:%02d",
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currentControlEntry.timestamp.hour,
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currentControlEntry.timestamp.minute);
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}
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sControlTemperatureEntry getControlCurrentTemperatureEntry(void) {
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return currentControlEntry;
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}
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