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104 lines
3.5 KiB
C++
104 lines
3.5 KiB
C++
#include "BME680Sensor.h"
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#include "../mesh/generated/meshtastic/telemetry.pb.h"
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#include "FSCommon.h"
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#include "TelemetrySensor.h"
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#include "configuration.h"
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BME680Sensor::BME680Sensor() : TelemetrySensor(meshtastic_TelemetrySensorType_BME680, "BME680") {}
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int32_t BME680Sensor::runOnce()
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{
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LOG_INFO("Init sensor: %s with the BSEC Library\n", sensorName);
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if (!hasSensor()) {
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return DEFAULT_SENSOR_MINIMUM_WAIT_TIME_BETWEEN_READS;
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}
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bme680.begin(nodeTelemetrySensorsMap[sensorType], Wire);
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if (bme680.bsecStatus == BSEC_OK) {
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bme680.setConfig(bsec_config_iaq);
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loadState();
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bme680.updateSubscription(sensorList, 13, BSEC_SAMPLE_RATE_LP);
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status = 1;
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} else {
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status = 0;
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}
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return initI2CSensor();
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}
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void BME680Sensor::setup() {}
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bool BME680Sensor::getMetrics(meshtastic_Telemetry *measurement)
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{
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bme680.run();
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measurement->variant.environment_metrics.temperature = bme680.temperature;
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measurement->variant.environment_metrics.relative_humidity = bme680.humidity;
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measurement->variant.environment_metrics.barometric_pressure = bme680.pressure / 100.0F;
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measurement->variant.environment_metrics.gas_resistance = bme680.gasResistance / 1000.0;
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// Check if we need to save state to filesystem (every STATE_SAVE_PERIOD ms)
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updateState();
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return true;
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}
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void BME680Sensor::loadState()
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{
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#ifdef FSCom
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auto file = FSCom.open(bsecConfigFileName, FILE_O_READ);
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if (file) {
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file.read((uint8_t *)&bsecState, BSEC_MAX_STATE_BLOB_SIZE);
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file.close();
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bme680.setState(bsecState);
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LOG_INFO("%s state read from %s.\n", sensorName, bsecConfigFileName);
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} else {
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LOG_INFO("No %s state found (File: %s).\n", sensorName, bsecConfigFileName);
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}
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#else
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LOG_ERROR("ERROR: Filesystem not implemented\n");
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#endif
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}
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void BME680Sensor::updateState()
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{
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#ifdef FSCom
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bool update = false;
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if (stateUpdateCounter == 0) {
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/* First state update when IAQ accuracy is >= 3 */
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if (bme680.iaqAccuracy >= 3) {
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LOG_DEBUG("%s state update IAQ accuracy %u >= 3\n", sensorName, bme680.iaqAccuracy);
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update = true;
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stateUpdateCounter++;
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} else {
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LOG_DEBUG("%s not updated, IAQ accuracy is %u >= 3\n", sensorName, bme680.iaqAccuracy);
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}
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} else {
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/* Update every STATE_SAVE_PERIOD minutes */
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if ((stateUpdateCounter * STATE_SAVE_PERIOD) < millis()) {
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LOG_DEBUG("%s state update every %d minutes\n", sensorName, STATE_SAVE_PERIOD);
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update = true;
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stateUpdateCounter++;
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}
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}
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if (update) {
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bme680.getState(bsecState);
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std::string filenameTmp = bsecConfigFileName;
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filenameTmp += ".tmp";
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auto file = FSCom.open(bsecConfigFileName, FILE_O_WRITE);
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if (file) {
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LOG_INFO("%s state write to %s.\n", sensorName, bsecConfigFileName);
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file.write((uint8_t *)&bsecState, BSEC_MAX_STATE_BLOB_SIZE);
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file.flush();
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file.close();
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// brief window of risk here ;-)
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if (FSCom.exists(bsecConfigFileName) && !FSCom.remove(bsecConfigFileName))
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LOG_WARN("Can't remove old state file\n");
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if (!renameFile(filenameTmp.c_str(), bsecConfigFileName))
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LOG_ERROR("Error: can't rename new state file\n");
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} else {
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LOG_INFO("Can't write %s state (File: %s).\n", sensorName, bsecConfigFileName);
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}
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}
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#else
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LOG_ERROR("ERROR: Filesystem not implemented\n");
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#endif
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} |