ESPHome 2026.5.1
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debug_component.cpp
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1#include "debug_component.h"
2
3#include <algorithm>
5#include "esphome/core/hal.h"
7#include "esphome/core/log.h"
9#include <cinttypes>
10#include <climits>
11
12namespace esphome::debug {
13
14static const char *const TAG = "debug";
15
17 ESP_LOGCONFIG(TAG, "Debug component:");
18#ifdef USE_TEXT_SENSOR
19 LOG_TEXT_SENSOR(" ", "Device info", this->device_info_);
20#endif // USE_TEXT_SENSOR
21#ifdef USE_SENSOR
22 LOG_SENSOR(" ", "Free space on heap", this->free_sensor_);
23 LOG_SENSOR(" ", "Largest free heap block", this->block_sensor_);
24 LOG_SENSOR(" ", "CPU frequency", this->cpu_frequency_sensor_);
25#if defined(USE_ESP8266) && USE_ARDUINO_VERSION_CODE >= VERSION_CODE(2, 5, 2)
26 LOG_SENSOR(" ", "Heap fragmentation", this->fragmentation_sensor_);
27#endif // defined(USE_ESP8266) && USE_ARDUINO_VERSION_CODE >= VERSION_CODE(2, 5, 2)
28#endif // USE_SENSOR
29
30 char device_info_buffer[DEVICE_INFO_BUFFER_SIZE];
31 ESP_LOGD(TAG, "ESPHome version %s", ESPHOME_VERSION);
32 size_t pos = buf_append_str(device_info_buffer, DEVICE_INFO_BUFFER_SIZE, 0, ESPHOME_VERSION);
33
34 this->free_heap_ = get_free_heap_();
35 ESP_LOGD(TAG, "Free Heap Size: %" PRIu32 " bytes", this->free_heap_);
36
37 pos = get_device_info_(std::span<char, DEVICE_INFO_BUFFER_SIZE>(device_info_buffer), pos);
38
39#ifdef USE_TEXT_SENSOR
40 if (this->device_info_ != nullptr) {
41 this->device_info_->publish_state(device_info_buffer, pos);
42 }
43 if (this->reset_reason_ != nullptr) {
44 char reset_reason_buffer[RESET_REASON_BUFFER_SIZE];
46 get_reset_reason_(std::span<char, RESET_REASON_BUFFER_SIZE>(reset_reason_buffer)));
47 }
48#endif // USE_TEXT_SENSOR
49
50#if defined(USE_ESP32) || defined(USE_ZEPHYR)
51 this->log_partition_info_(); // Log partition information
52#endif
53}
54
56 // log when free heap space has halved
57 uint32_t new_free_heap = get_free_heap_();
58 if (new_free_heap < this->free_heap_ / 2) {
59 this->free_heap_ = new_free_heap;
60 ESP_LOGD(TAG, "Free Heap Size: %" PRIu32 " bytes", this->free_heap_);
61 this->status_momentary_warning("heap", 1000);
62 }
63
64#ifdef USE_SENSOR
65 // calculate loop time - from last call to this one
66 if (this->loop_time_sensor_ != nullptr) {
68 uint32_t loop_time = now - this->last_loop_timetag_;
69 this->max_loop_time_ = std::max(this->max_loop_time_, loop_time);
70 this->last_loop_timetag_ = now;
71 }
72#endif // USE_SENSOR
73}
74
76#ifdef USE_SENSOR
77 if (this->free_sensor_ != nullptr) {
79 }
80
81 if (this->loop_time_sensor_ != nullptr) {
83 this->max_loop_time_ = 0;
84 }
85 if (this->cpu_frequency_sensor_ != nullptr) {
87 }
88
89#endif // USE_SENSOR
91}
92
94
95} // namespace esphome::debug
uint32_t IRAM_ATTR HOT get_loop_component_start_time() const
Get the cached time in milliseconds from when the current component started its loop execution.
void status_momentary_warning(const char *name, uint32_t length=5000)
Set warning status flag and automatically clear it after a timeout.
float get_setup_priority() const override
void log_partition_info_()
Logs information about the device's partition table.
size_t get_device_info_(std::span< char, DEVICE_INFO_BUFFER_SIZE > buffer, size_t pos)
sensor::Sensor * fragmentation_sensor_
const char * get_reset_reason_(std::span< char, RESET_REASON_BUFFER_SIZE > buffer)
text_sensor::TextSensor * reset_reason_
sensor::Sensor * cpu_frequency_sensor_
text_sensor::TextSensor * device_info_
void publish_state(float state)
Publish a new state to the front-end.
Definition sensor.cpp:68
void publish_state(const std::string &state)
constexpr float LATE
For components that should be initialized at the very end of the setup process.
Definition component.h:57
size_t buf_append_str(char *buf, size_t size, size_t pos, const char *str)
Safely append a string to buffer, returning new position (capped at size).
Definition helpers.h:1087
uint32_t arch_get_cpu_freq_hz()
Definition hal.cpp:63
size_t size_t pos
Definition helpers.h:1038
Application App
Global storage of Application pointer - only one Application can exist.
static void uint32_t