ESP32 Forum

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#include <stdio.h>
#include "esp_log.h"
#include "esp_efuse.h"
#include "esp_efuse_table.h"
#include "esp_secure_boot.h"

static const char *TAG = "app";

void app_main(void)
{

    REG_WRITE(ESP_EFUSE_SECURE_BOOT_EN, 0);
    REG_WRITE(ESP_EFUSE_ENABLE_SECURITY_DOWNLOAD, 0);

    esp_efuse_reset();
    
    esp_efuse_disable_rom_download_mode();

    const uint32_t hw_sec_version = esp_efuse_read_secure_version();
    ESP_LOGW(TAG, "New firmware security version is less than eFuse programmed, %"PRIu32, hw_sec_version);

    ESP_LOGW(TAG, "efuse_ll_get_secure_boot_v2_en() = %d", efuse_ll_get_secure_boot_v2_en());
    ESP_LOGW(TAG, "esp_efuse_read_field_bit(ESP_EFUSE_SECURE_BOOT_EN) = %d", esp_efuse_read_field_bit(ESP_EFUSE_SECURE_BOOT_EN));
    ESP_LOGW(TAG, "esp_efuse_read_field_bit(ESP_EFUSE_DIS_DOWNLOAD_MODE) = %d", esp_efuse_read_field_bit(ESP_EFUSE_DIS_DOWNLOAD_MODE));
    ESP_LOGW(TAG, "esp_efuse_read_field_bit(ESP_EFUSE_ENABLE_SECURITY_DOWNLOAD) = %d", esp_efuse_read_field_bit(ESP_EFUSE_ENABLE_SECURITY_DOWNLOAD));

}

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idf.py monitor
/Users/user/esp/esp-idf/tools/check_python_dependencies.py:12: DeprecationWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html
  import pkg_resources
Executing action: monitor
Running idf_monitor in directory /Users/user/app
Executing "/Users/user/.espressif/python_env/idf5.1_py3.11_env/bin/python /Users/user/esp/esp-idf/tools/idf_monitor.py -p /dev/cu.usbserial-1140 -b 115200 --toolchain-prefix xtensa-esp32s2-elf- --target esp32s2 /Users/user/app/build/app.elf -m '/Users/user/.espressif/python_env/idf5.1_py3.11_env/bin/python' '/Users/user/esp/esp-idf/tools/idf.py'"...
--- idf_monitor on /dev/cu.usbserial-1140 115200 ---
--- Quit: Ctrl+] | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H ---
d PC:0x40000340
0x40000340: _UserExceptionVector in ROM

Download bESP-ROM:esp32s2-rc4-20191025
Build:Oct 25 2019
rst:0x1 (POWERON),boot:0x8 (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:1
Valid secure boot key blocks: 0
secure boot verification succeeded
load:0x3ffe6108,len:0x17c4
load:0x4004b000,len:0x4
load:0x4004b004,len:0xab4
load:0x4004f000,len:0x3160
entry 0x4004b1c4
I (45) boot: ESP-IDF v5.1 2nd stage bootloader
I (45) boot: compile time Feb 18 2024 18:52:23
I (45) boot: chip revision: v0.0
I (49) boot.esp32s2: SPI Speed      : 80MHz
I (53) boot.esp32s2: SPI Mode       : DIO
I (58) boot.esp32s2: SPI Flash Size : 2MB
I (63) boot: Enabling RNG early entropy source...
I (68) boot: Partition Table:
I (72) boot: ## Label            Usage          Type ST Offset   Length
I (79) boot:  0 nvs              WiFi data        01 02 0000b000 00006000
I (87) boot:  1 phy_init         RF data          01 01 00011000 00001000
I (94) boot:  2 factory          factory app      00 00 00020000 00100000
I (102) boot: End of partition table
I (106) esp_image: segment 0: paddr=00020020 vaddr=3f000020 size=091b4h ( 37300) map
I (122) esp_image: segment 1: paddr=000291dc vaddr=3ffbf120 size=01970h (  6512) load
I (124) esp_image: segment 2: paddr=0002ab54 vaddr=40024000 size=054c4h ( 21700) load
I (137) esp_image: segment 3: paddr=00030020 vaddr=40080020 size=15110h ( 86288) map
I (157) esp_image: segment 4: paddr=00045138 vaddr=400294c4 size=05c50h ( 23632) load
I (169) boot: Loaded app from partition at offset 0x20000
I (169) boot: Disabling RNG early entropy source...
I (180) cpu_start: Unicore app
I (180) cache: Instruction cache        : size 8KB, 4Ways, cache line size 32Byte
I (181) cache: Data cache               : size 8KB, 4Ways, cache line size 32Byte
I (188) cpu_start: Pro cpu up.
I (212) cpu_start: Pro cpu start user code
I (212) cpu_start: cpu freq: 160000000 Hz
I (212) cpu_start: Application information:
I (215) cpu_start: Project name:     app
I (220) cpu_start: App version:      4193328-dirty
I (226) cpu_start: Compile time:     Feb 18 2024 18:52:13
I (232) cpu_start: ELF file SHA256:  2fda029ff1086329...
Warning: checksum mismatch between flashed and built applications. Checksum of built application is 6741ac1a3e1047791d9edf01fccbe1dbce0d28d715e3a7c87346c61077293a89
I (238) cpu_start: ESP-IDF:          v5.1
I (242) cpu_start: Min chip rev:     v0.0
I (247) cpu_start: Max chip rev:     v1.99 
I (252) cpu_start: Chip rev:         v0.0
I (257) heap_init: Initializing. RAM available for dynamic allocation:
I (264) heap_init: At 3FFC13C0 len 0003AC40 (235 KiB): DRAM
I (270) heap_init: At 3FFFC000 len 00003A10 (14 KiB): DRAM
I (276) heap_init: At 3FF9E000 len 00002000 (8 KiB): RTCRAM
I (283) spi_flash: detected chip: generic
I (287) spi_flash: flash io: dio
W (291) spi_flash: Detected size(4096k) larger than the size in the binary image header(2048k). Using the size in the binary image header.
I (305) app_start: Starting scheduler on CPU0
I (309) main_task: Started on CPU0
I (309) main_task: Calling app_main()
W (309) app: New firmware security version is less than eFuse programmed, 0
W (319) app: efuse_ll_get_secure_boot_v2_en() = 1
W (329) app: esp_efuse_read_field_bit(ESP_EFUSE_SECURE_BOOT_EN) = 1
W (329) app: esp_efuse_read_field_bit(ESP_EFUSE_DIS_DOWNLOAD_MODE) = 1
W (339) app: esp_efuse_read_field_bit(ESP_EFUSE_ENABLE_SECURITY_DOWNLOAD) = 1
I (349) main_task: Returned from app_main()

Code: Select all

espefuse.py --port=$ESPPORT --chip=esp32s2 summary
espefuse.py v4.7.dev1
Connecting......................................

A fatal error occurred: Failed to connect to ESP32-S2: Wrong boot mode detected (0x0)! The chip needs to be in download mode.
For troubleshooting steps visit: https://docs.espressif.com/projects/esptool/en/latest/troubleshooting.html
Please make sure that you have specified the right port with the --port argument