How do I flash a new image or update file on a FAT storage partition using the esptool.py command line for a secure boot device? (IDFGH-14310)

[andy-danieal]

Answers checklist.

• I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

General issue report

We have used custom partition tables and need to update file on storage FAT partition via command line.

# Espressif ESP32 Partition Table,,,,,
# Name,   Type, SubType, Offset,   Size,      Flags
nvs,      data, nvs,,   0x4000,
otadata,  data, ota,,  0x2000,
phy_init, data, phy,,  0x1000,
priv,     data, nvs,, 0x4000,     encrypted
storage,data,fat,,0x20000,
ota_0,0,    ota_0,,  0x170000,
ota_1,0,    ota_1,, 0x170000,

And initialized wearleveling to FAT partition.

    esp_vfs_spiffs_conf_t conf = {.base_path = "/spiflash",
 .partition_label = "storage", .max_files = 6, .format_if_mount_failed = true};

    err = esp_vfs_spiffs_register(&conf);
     
    //Reading File
    FILE *fptr = fopen((const char *)file_path, "rb");

    //Writing File
    FILE *fptr = fopen((const char *)file_path, "wb");

[andy-danieal]

First create spiffs folder with add files

spiffs_create_partition_image(storage ../spiffs FLASH_IN_PROJECT)

• this line add into CMakeList.txt and build project to generate stroage.bin

Then stroage.bin file flash on secureboot