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Use PROGMEM for version text sensor strings on ESP8266

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Build version string incrementally from PROGMEM literal prefix, avoiding
format strings in RAM. Copy from PROGMEM on ESP8266, use directly on
other platforms.
This commit is contained in:
David Woodhouse
2025-12-16 19:22:42 +00:00
parent 175250deb0
commit a30052e7c0
1 changed files with 19 additions and 5 deletions
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24
esphome/components/version/version_text_sensor.cpp
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@@ -10,14 +10,28 @@ namespace version {
static const char *const TAG = "version.text_sensor";
void VersionTextSensor::setup() {
if (this->hide_timestamp_) {
this->publish_state(str_sprintf(ESPHOME_VERSION " (config hash 0x%08" PRIx32 ")", App.get_config_hash()));
} else {
static const char prefix[] PROGMEM = ESPHOME_VERSION " (config hash 0x";
char version_str[128];
#ifdef USE_ESP8266
strcpy_P(version_str, prefix);
#else
strcpy(version_str, prefix);
#endif
char hash_str[9];
snprintf(hash_str, sizeof(hash_str), "%08" PRIx32, App.get_config_hash());
strcat(version_str, hash_str);
if (!this->hide_timestamp_) {
strcat(version_str, ", built: ");
char build_time_str[esphome::Application::BUILD_TIME_STR_SIZE];
App.get_build_time_string(build_time_str);
this->publish_state(str_sprintf(ESPHOME_VERSION " (config hash 0x%08" PRIx32 ", built: %s)", App.get_config_hash(),
build_time_str));
strcat(version_str, build_time_str);
}
strcat(version_str, ")");
this->publish_state(version_str);
}
float VersionTextSensor::get_setup_priority() const { return setup_priority::DATA; }
void VersionTextSensor::set_hide_timestamp(bool hide_timestamp) { this->hide_timestamp_ = hide_timestamp; }