bakalarka/components/files/file.c

#include <stdio.h>
#include <string.h>
#include <sys/unistd.h>
#include <sys/stat.h>
#include "esp_err.h"
#include "esp_log.h"
#include "esp_spiffs.h"
#include "file.h"


static const char *TAG = "SPIFFS";
/*Register and mount SPIFFS to VFS with given path prefix*/
 esp_vfs_spiffs_conf_t conf = {
      .base_path = "/spiffs",
      .partition_label = "storage_spiffs",
      .max_files = 20,
      .format_if_mount_failed = true
    };
//inicializacia SPIFFS suboroveho systemu
void init_memory(){
ESP_LOGI(TAG, "Initializing SPIFFS");
    
   
    
    // Use settings defined above to initialize and mount SPIFFS filesystem.
    // Note: esp_vfs_spiffs_register is an all-in-one convenience function.
    esp_err_t ret = esp_vfs_spiffs_register(&conf);

    if (ret != ESP_OK) {
        if (ret == ESP_FAIL) {
            ESP_LOGE(TAG, "Failed to mount or format filesystem");
        } else if (ret == ESP_ERR_NOT_FOUND) {
            ESP_LOGE(TAG, "Failed to find SPIFFS partition");
        } else {
            ESP_LOGE(TAG, "Failed to initialize SPIFFS (%s)", esp_err_to_name(ret));
        }
        return;
    }
    
    size_t total = 0, used = 0;
    ret = esp_spiffs_info(conf.partition_label, &total, &used);
    if (ret != ESP_OK) {
        ESP_LOGE(TAG, "Failed to get SPIFFS partition information (%s)", esp_err_to_name(ret));
    } else {
        ESP_LOGI(TAG, "Partition size: total: %d, used: %d", total, used);
    }  
}

//vytvorenie suboru s hodnotou zadanou v druhom parametri
void create_file(char adresa[],char comment[]){
  ESP_LOGI(TAG, "Opening file");
    FILE* f = fopen(adresa, "w");
    if (f == NULL) {
        ESP_LOGE(TAG, "Failed to open file for writing");
        return;
    }
    fprintf(f, comment);
    fclose(f);
    ESP_LOGI(TAG, "File written");
    
}
//Citanie existujuceho suboru na uart
void read_file(char adresa[]){
    char line[120];
  ESP_LOGI(TAG, "Reading file");
    FILE* f = fopen(adresa, "r");
    if (f == NULL) {
        ESP_LOGE(TAG, "Failed to open file for reading");
        return;
    }
    ESP_LOGI(TAG, "Read from file: ");
   while(fgets(line, 120, f)){
    printf("%s",line);


   }

    fclose(f);
   
}