c-如何访问ESP-IDF应用程序代码内部的编译时间

Question

是否有方法从ESP-IDF应用程序代码内部访问编译时间？类似于如何使用IDF_VER访问IDF版本？

Answer 1

它有IDF版本>=3.3

请参阅https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/system/app_image_format.html#application-描述

/**
* @brief Description about application.
*/
typedef struct {
uint32_t magic_word;        /*!< Magic word ESP_APP_DESC_MAGIC_WORD */
uint32_t secure_version;    /*!< Secure version */
uint32_t reserv1[2];        /*!< --- */
char version[32];           /*!< Application version */
char project_name[32];      /*!< Project name */
char time[16];              /*!< Compile time */
char date[16];              /*!< Compile date*/
char idf_ver[32];           /*!< Version IDF */
uint8_t app_elf_sha256[32]; /*!< sha256 of elf file */
uint32_t reserv2[20];       /*!< --- */
} esp_app_desc_t;

访问方式如下：

// Note esp_ota_get_partition_description() was introduced in ESP-IDF 3.3.
#ifdef ESP_APP_DESC_MAGIC_WORD // enable functionality only if present in IDF by testing for macro.
esp_app_desc_t app_info;
if (esp_ota_get_partition_description(it_partition, &app_info) == ESP_OK)
{
ESP_LOGI(TAG, "compilation_time:%s", app_info.time);
}
#endif