315 lines
9.4 KiB
C
315 lines
9.4 KiB
C
#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "driver/gpio.h"
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#include "esp_log.h"
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#include <ds18x20.h>
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#include "inputs.h"
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#define MAX(a, b) ((a) > (b) ? (a) : (b))
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#define MAX_DN18B20_SENSORS 4U
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#define PERIODIC_INTERVAL 1U // read and compute the inputs every 1sec
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#define AVG10_SAMPLE_SIZE 10U
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#define AVG60_SAMPLE_SIZE 60U
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typedef struct _Average
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{
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float value;
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float samples[MAX(AVG10_SAMPLE_SIZE, AVG60_SAMPLE_SIZE)];
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size_t bufferIndex;
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size_t bufferCount;
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} sAverage;
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typedef struct _Measurement
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{
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float value;
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sAverage average10s;
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sAverage average60s;
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} sMeasurement;
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static const char *TAG = "smart-oil-heater-control-system-inputs";
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const uint8_t uBurnerFaultPin = 19U;
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const uint8_t uDS18B20Pin = 4U;
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const onewire_addr_t uChamperTempSensorAddr = 0x3e0000001754be28;
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const onewire_addr_t uOutdoorTempSensorAddr = 0x880000001648e328;
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const onewire_addr_t uInletFlowTempSensorAddr = 0xe59cdef51e64ff28;
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const onewire_addr_t uReturnFlowTempSensorAddr = 0xa7a8e1531f64ff28;
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onewire_addr_t uOneWireAddresses[MAX_DN18B20_SENSORS];
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float fDS18B20Temps[MAX_DN18B20_SENSORS];
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size_t sSensorCount = 0U;
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static SemaphoreHandle_t xMutexAccessInputs = NULL;
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static eBurnerErrorState sBurnerErrorState;
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static sMeasurement fChamperTemperature;
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static sMeasurement fOutdoorTemperature;
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static sMeasurement fInletFlowTemperature;
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static sMeasurement fReturnFlowTemperature;
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void taskInput(void *pvParameters);
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void updateAverage(sMeasurement *pMeasurement);
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void initInputs(void)
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{
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gpio_config_t ioConfBurnerFault = {
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.pin_bit_mask = (1ULL << uBurnerFaultPin), // Pin mask
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.mode = GPIO_MODE_INPUT, // Set as inout
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.pull_up_en = GPIO_PULLUP_ENABLE, // Enable pull-up
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.pull_down_en = GPIO_PULLDOWN_DISABLE, // Disable pull-down
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.intr_type = GPIO_INTR_DISABLE // Disable interrupts
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};
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gpio_config(&ioConfBurnerFault);
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xMutexAccessInputs = xSemaphoreCreateBinary();
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if (xMutexAccessInputs == NULL)
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{
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ESP_LOGE(TAG, "Unable to create mutex");
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}
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xSemaphoreGive(xMutexAccessInputs);
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BaseType_t taskCreated = xTaskCreate(
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taskInput, // Function to implement the task
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"taskInput", // Task name
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2048, // 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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{
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ESP_LOGI(TAG, "Task created successfully!");
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}
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else
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{
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ESP_LOGE(TAG, "Failed to create task");
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}
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}
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void updateAverage(sMeasurement *pMeasurement)
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{ /* Average form the last 10sec */
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pMeasurement->average10s.samples[pMeasurement->average10s.bufferIndex] = pMeasurement->value;
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pMeasurement->average10s.bufferIndex = (pMeasurement->average10s.bufferIndex + 1) % AVG10_SAMPLE_SIZE;
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if (pMeasurement->average10s.bufferCount < AVG10_SAMPLE_SIZE)
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{
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pMeasurement->average10s.bufferCount++;
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}
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if (pMeasurement->average10s.bufferCount == 0U)
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{
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pMeasurement->average10s.value = pMeasurement->value;
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}
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float sum = 0.0;
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for (int i = 0; i < pMeasurement->average10s.bufferCount; i++)
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{
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sum += pMeasurement->average10s.samples[i];
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}
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pMeasurement->average10s.value = sum / pMeasurement->average10s.bufferCount;
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/* Average form the last 60sec */
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pMeasurement->average60s.samples[pMeasurement->average60s.bufferIndex] = pMeasurement->value;
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pMeasurement->average60s.bufferIndex = (pMeasurement->average60s.bufferIndex + 1) % AVG60_SAMPLE_SIZE;
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if (pMeasurement->average60s.bufferCount < AVG60_SAMPLE_SIZE)
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{
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pMeasurement->average60s.bufferCount++;
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}
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if (pMeasurement->average60s.bufferCount == 0U)
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{
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pMeasurement->average60s.value = pMeasurement->value;
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}
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sum = 0.0;
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for (int i = 0; i < pMeasurement->average60s.bufferCount; i++)
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{
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sum += pMeasurement->average60s.samples[i];
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}
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pMeasurement->average60s.value = sum / pMeasurement->average60s.bufferCount;
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}
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void taskInput(void *pvParameters)
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{
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while (1)
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{
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vTaskDelay(PERIODIC_INTERVAL * 1000U / portTICK_PERIOD_MS);
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if (gpio_get_level(uBurnerFaultPin) == 1)
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{
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sBurnerErrorState = FAULT;
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}
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else
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{
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sBurnerErrorState = NO_ERROR;
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}
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if (ds18x20_scan_devices(uDS18B20Pin, uOneWireAddresses, MAX_DN18B20_SENSORS, &sSensorCount) != ESP_OK)
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{
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ESP_LOGE(TAG, "1-Wire device scan error!");
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}
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if (!sSensorCount)
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{
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ESP_LOGW(TAG, "No 1-Wire devices detected!");
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}
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else
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{
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ESP_LOGI(TAG, "%d 1-Wire devices detected", sSensorCount);
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if (sSensorCount > MAX_DN18B20_SENSORS)
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{
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sSensorCount = MAX_DN18B20_SENSORS;
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ESP_LOGW(TAG, "More 1-Wire devices found than expected!");
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}
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if (ds18x20_measure_and_read_multi(uDS18B20Pin, uOneWireAddresses, sSensorCount, fDS18B20Temps) != ESP_OK)
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{
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ESP_LOGE(TAG, "1-Wire devices read error");
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}
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else
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{
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for (int j = 0; j < sSensorCount; j++)
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{
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float temp_c = fDS18B20Temps[j];
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ESP_LOGI(TAG, "Sensor: %08" PRIx64 " reports %.3f°C", (uint64_t)uOneWireAddresses[j], temp_c);
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if (xSemaphoreTake(xMutexAccessInputs, portMAX_DELAY) == pdTRUE)
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{
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switch ((uint64_t)uOneWireAddresses[j])
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{
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case ((uint64_t)uChamperTempSensorAddr):
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fChamperTemperature.value = temp_c;
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updateAverage(&fChamperTemperature);
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break;
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case ((uint64_t)uOutdoorTempSensorAddr):
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fOutdoorTemperature.value = temp_c;
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updateAverage(&fOutdoorTemperature);
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break;
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case ((uint64_t)uInletFlowTempSensorAddr):
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fInletFlowTemperature.value = temp_c;
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updateAverage(&fInletFlowTemperature);
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break;
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case ((uint64_t)uReturnFlowTempSensorAddr):
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fReturnFlowTemperature.value = temp_c;
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updateAverage(&fReturnFlowTemperature);
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break;
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default:
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break;
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}
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xSemaphoreGive(xMutexAccessInputs);
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}
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}
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}
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}
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}
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}
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float getChamberTemperature(eMeasurementMode mode)
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{
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float ret = 0.0f;
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if (xSemaphoreTake(xMutexAccessInputs, portMAX_DELAY) == pdTRUE)
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{
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switch (mode)
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{
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case CURRENT:
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ret = fChamperTemperature.value;
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break;
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case AVERAGE_10S:
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ret = fChamperTemperature.average10s.value;
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break;
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case AVERAGE_60S:
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ret = fChamperTemperature.average60s.value;
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break;
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default:
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break;
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}
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xSemaphoreGive(xMutexAccessInputs);
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}
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return ret;
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}
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float getOutdoorTemperature(eMeasurementMode mode)
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{
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float ret = 0.0f;
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if (xSemaphoreTake(xMutexAccessInputs, portMAX_DELAY) == pdTRUE)
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{
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switch (mode)
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{
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case CURRENT:
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ret = fOutdoorTemperature.value;
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break;
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case AVERAGE_10S:
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ret = fOutdoorTemperature.average10s.value;
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break;
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case AVERAGE_60S:
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ret = fOutdoorTemperature.average60s.value;
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break;
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default:
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break;
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}
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xSemaphoreGive(xMutexAccessInputs);
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}
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return ret;
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}
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float getInletFlowTemperature(eMeasurementMode mode)
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{
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float ret = 0.0f;
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if (xSemaphoreTake(xMutexAccessInputs, portMAX_DELAY) == pdTRUE)
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{
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switch (mode)
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{
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case CURRENT:
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ret = fInletFlowTemperature.value;
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break;
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case AVERAGE_10S:
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ret = fInletFlowTemperature.average10s.value;
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break;
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case AVERAGE_60S:
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ret = fInletFlowTemperature.average60s.value;
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break;
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default:
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break;
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}
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xSemaphoreGive(xMutexAccessInputs);
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}
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return ret;
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}
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float getReturnFlowTemperature(eMeasurementMode mode)
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{
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float ret = 0.0f;
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if (xSemaphoreTake(xMutexAccessInputs, portMAX_DELAY) == pdTRUE)
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{
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switch (mode)
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{
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case CURRENT:
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ret = fReturnFlowTemperature.value;
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break;
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case AVERAGE_10S:
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ret = fReturnFlowTemperature.average10s.value;
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break;
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case AVERAGE_60S:
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ret = fReturnFlowTemperature.average60s.value;
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break;
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default:
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break;
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}
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xSemaphoreGive(xMutexAccessInputs);
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}
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return ret;
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}
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eBurnerErrorState getBurnerError(void)
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{
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eBurnerErrorState ret = FAULT;
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if (xSemaphoreTake(xMutexAccessInputs, portMAX_DELAY) == pdTRUE)
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{
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ret = sBurnerErrorState;
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xSemaphoreGive(xMutexAccessInputs);
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}
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return ret;
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} |