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Fix: Incorporate unique serial number in preference's hash for multiple Sensirion sensors (#5479)

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kahrendt 2023-10-25 15:23:55 -04:00 committed by GitHub
parent fdef6c6d46
commit 258b0fbff3
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 12 additions and 6 deletions
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8
esphome/components/sen5x/sen5x.cpp
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@ -1,5 +1,6 @@
#include "sen5x.h"
#include "esphome/core/hal.h"
#include "esphome/core/helpers.h"
#include "esphome/core/log.h"
#include <cinttypes>
@ -135,9 +136,12 @@ void SEN5XComponent::setup() {
ESP_LOGD(TAG, "Firmware version %d", this->firmware_version_);
if (this->voc_sensor_ && this->store_baseline_) {
// Hash with compilation time
uint32_t combined_serial =
encode_uint24(this->serial_number_[0], this->serial_number_[1], this->serial_number_[2]);
// Hash with compilation time and serial number
// This ensures the baseline storage is cleared after OTA
uint32_t hash = fnv1_hash(App.get_compilation_time());
// Serial numbers are unique to each sensor, so mulitple sensors can be used without conflict
uint32_t hash = fnv1_hash(App.get_compilation_time() + std::to_string(combined_serial));
this->pref_ = global_preferences->make_preference<Sen5xBaselines>(hash, true);
if (this->pref_.load(&this->voc_baselines_storage_)) {

5
esphome/components/sgp30/sgp30.cpp
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@ -73,9 +73,10 @@ void SGP30Component::setup() {
return;
}
// Hash with compilation time
// Hash with compilation time and serial number
// This ensures the baseline storage is cleared after OTA
uint32_t hash = fnv1_hash(App.get_compilation_time());
// Serial numbers are unique to each sensor, so mulitple sensors can be used without conflict
uint32_t hash = fnv1_hash(App.get_compilation_time() + std::to_string(this->serial_number_));
this->pref_ = global_preferences->make_preference<SGP30Baselines>(hash, true);
if (this->pref_.load(&this->baselines_storage_)) {

5
esphome/components/sgp4x/sgp4x.cpp
View File

@ -61,9 +61,10 @@ void SGP4xComponent::setup() {
ESP_LOGD(TAG, "Product version: 0x%0X", uint16_t(this->featureset_ & 0x1FF));
if (this->store_baseline_) {
// Hash with compilation time
// Hash with compilation time and serial number
// This ensures the baseline storage is cleared after OTA
uint32_t hash = fnv1_hash(App.get_compilation_time());
// Serial numbers are unique to each sensor, so mulitple sensors can be used without conflict
uint32_t hash = fnv1_hash(App.get_compilation_time() + std::to_string(this->serial_number_));
this->pref_ = global_preferences->make_preference<SGP4xBaselines>(hash, true);
if (this->pref_.load(&this->voc_baselines_storage_)) {