mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
f84394e550
1. Clean up the example code 2. Add demonstration of partition read/write operations 3. Add example test
100 lines
3.3 KiB
C
100 lines
3.3 KiB
C
/* Flash encryption Example
|
|
|
|
This example code is in the Public Domain (or CC0 licensed, at your option.)
|
|
|
|
Unless required by applicable law or agreed to in writing, this
|
|
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
|
|
CONDITIONS OF ANY KIND, either express or implied.
|
|
*/
|
|
#include <stdio.h>
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "freertos/task.h"
|
|
#include "soc/efuse_reg.h"
|
|
#include "esp_efuse.h"
|
|
#include "esp_system.h"
|
|
#include "esp_spi_flash.h"
|
|
#include "esp_partition.h"
|
|
#include "esp_flash_encrypt.h"
|
|
#include "esp_efuse_table.h"
|
|
|
|
static void example_print_chip_info(void);
|
|
static void example_print_flash_encryption_status(void);
|
|
static void example_read_write_flash(void);
|
|
|
|
static const char* TAG = "example";
|
|
|
|
|
|
void app_main(void)
|
|
{
|
|
printf("\nExample to check Flash Encryption status\n");
|
|
|
|
example_print_chip_info();
|
|
example_print_flash_encryption_status();
|
|
example_read_write_flash();
|
|
}
|
|
|
|
|
|
static void example_print_chip_info(void)
|
|
{
|
|
/* Print chip information */
|
|
esp_chip_info_t chip_info;
|
|
esp_chip_info(&chip_info);
|
|
printf("This is ESP32 chip with %d CPU cores, WiFi%s%s, ",
|
|
chip_info.cores,
|
|
(chip_info.features & CHIP_FEATURE_BT) ? "/BT" : "",
|
|
(chip_info.features & CHIP_FEATURE_BLE) ? "/BLE" : "");
|
|
|
|
printf("silicon revision %d, ", chip_info.revision);
|
|
|
|
printf("%dMB %s flash\n", spi_flash_get_chip_size() / (1024 * 1024),
|
|
(chip_info.features & CHIP_FEATURE_EMB_FLASH) ? "embedded" : "external");
|
|
}
|
|
|
|
|
|
static void example_print_flash_encryption_status(void)
|
|
{
|
|
uint32_t flash_crypt_cnt = 0;
|
|
esp_efuse_read_field_blob(ESP_EFUSE_FLASH_CRYPT_CNT, &flash_crypt_cnt, 7);
|
|
printf("FLASH_CRYPT_CNT eFuse value is %d\n", flash_crypt_cnt);
|
|
|
|
esp_flash_enc_mode_t mode = esp_get_flash_encryption_mode();
|
|
if (mode == ESP_FLASH_ENC_MODE_DISABLED) {
|
|
printf("Flash encryption feature is disabled\n");
|
|
} else {
|
|
printf("Flash encryption feature is enabled in %s mode\n",
|
|
mode == ESP_FLASH_ENC_MODE_DEVELOPMENT ? "DEVELOPMENT" : "RELEASE");
|
|
}
|
|
}
|
|
|
|
|
|
static void example_read_write_flash(void)
|
|
{
|
|
const esp_partition_t* partition = esp_partition_find_first(
|
|
ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_ANY, "storage");
|
|
assert(partition);
|
|
|
|
printf("Erasing partition \"%s\" (0x%x bytes)\n", partition->label, partition->size);
|
|
|
|
ESP_ERROR_CHECK(esp_partition_erase_range(partition, 0, partition->size));
|
|
|
|
/* Generate the data which will be written */
|
|
const size_t data_size = 32;
|
|
uint8_t plaintext_data[data_size];
|
|
for (uint8_t i = 0; i < data_size; ++i) {
|
|
plaintext_data[i] = i;
|
|
}
|
|
|
|
printf("Writing data with esp_partition_write:\n");
|
|
ESP_LOG_BUFFER_HEXDUMP(TAG, plaintext_data, data_size, ESP_LOG_INFO);
|
|
ESP_ERROR_CHECK(esp_partition_write(partition, 0, plaintext_data, data_size));
|
|
|
|
uint8_t read_data[data_size];
|
|
printf("Reading with esp_partition_read:\n");
|
|
ESP_ERROR_CHECK(esp_partition_read(partition, 0, read_data, data_size));
|
|
ESP_LOG_BUFFER_HEXDUMP(TAG, read_data, data_size, ESP_LOG_INFO);
|
|
|
|
printf("Reading with spi_flash_read:\n");
|
|
ESP_ERROR_CHECK(spi_flash_read(partition->address, read_data, data_size));
|
|
ESP_LOG_BUFFER_HEXDUMP(TAG, read_data, data_size, ESP_LOG_INFO);
|
|
}
|