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[esp32] Disable unused per-tag log filtering, saving ~250 bytes RAM

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This commit is contained in:
J. Nick Koston
2026-01-30 23:44:26 -06:00
parent 9dcb469460
commit f3ce739d26
4 changed files with 7 additions and 14 deletions
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4
esphome/components/esp32/__init__.py
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@@ -1329,6 +1329,10 @@ async def to_code(config):
# Disable dynamic log level control to save memory
add_idf_sdkconfig_option("CONFIG_LOG_DYNAMIC_LEVEL_CONTROL", False)
# Disable per-tag log level filtering since dynamic level control is disabled above
# This saves ~250 bytes of RAM (tag cache) and associated code
add_idf_sdkconfig_option("CONFIG_LOG_TAG_LEVEL_IMPL_NONE", True)
# Reduce PHY TX power in the event of a brownout
add_idf_sdkconfig_option("CONFIG_ESP_PHY_REDUCE_TX_POWER", True)

9
esphome/components/i2c/i2c.cpp
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@@ -11,12 +11,6 @@ namespace i2c {
static const char *const TAG = "i2c";
void I2CBus::i2c_scan_() {
// suppress logs from the IDF I2C library during the scan
#if defined(USE_ESP32) && defined(USE_LOGGER)
auto previous = esp_log_level_get("*");
esp_log_level_set("*", ESP_LOG_NONE);
#endif
for (uint8_t address = 8; address != 120; address++) {
auto err = write_readv(address, nullptr, 0, nullptr, 0);
if (err == ERROR_OK) {
@@ -27,9 +21,6 @@ void I2CBus::i2c_scan_() {
// it takes 16sec to scan on nrf52. It prevents board reset.
arch_feed_wdt();
}
#if defined(USE_ESP32) && defined(USE_LOGGER)
esp_log_level_set("*", previous);
#endif
}
ErrorCode I2CDevice::read_register(uint8_t a_register, uint8_t *data, size_t len) {

3
esphome/components/logger/logger_esp32.cpp
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@@ -114,9 +114,6 @@ void Logger::pre_setup() {
global_logger = this;
esp_log_set_vprintf(esp_idf_log_vprintf_);
if (ESPHOME_LOG_LEVEL >= ESPHOME_LOG_LEVEL_VERBOSE) {
esp_log_level_set("*", ESP_LOG_VERBOSE);
}
ESP_LOGI(TAG, "Log initialized");
}

5
esphome/components/usb_cdc_acm/usb_cdc_acm_esp32.cpp
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@@ -155,8 +155,9 @@ void USBCDCACMInstance::setup() {
return;
}
// Use a larger stack size for (very) verbose logging
const size_t stack_size = esp_log_level_get(TAG) > ESP_LOG_DEBUG ? USB_TX_TASK_STACK_SIZE_VV : USB_TX_TASK_STACK_SIZE;
// Use a larger stack size for very verbose logging
constexpr size_t stack_size =
ESPHOME_LOG_LEVEL >= ESPHOME_LOG_LEVEL_VERY_VERBOSE ? USB_TX_TASK_STACK_SIZE_VV : USB_TX_TASK_STACK_SIZE;
// Create a simple, unique task name per interface
char task_name[] = "usb_tx_0";