flash sharing of bootloader and app

[name]

I open up a flash shared space in app and bootloader, write values from app, bootloader read, bootloader read values such as 0xFFFFF, and not ideal values, may I ask why this is.

Based on the background of this problem, I want to customize the protocol OTA without any verification. I have correctly transferred the firmware data to bank1 through flash, and I want to modify s_dfu_setting myself to make the bootloader know that the firmware is valid and can be updated.

[name]

Hello, I have solved the above problem, and now there is a new problem:
When the bootloader copies the new firmware from bank1 to bank0, there is a dead loop when the app is finally started. The run log file is as follows

The background to these questions is: The nrf52840 external 4G module sends the firmware data to the app through http, and then the app saves the firmware data to bank_1 through flash, and then modifies these configurations in the bootloader, so that the bootloader copies the bank_1 data to bank_0. Here is the code added to the bootloader

void nrf_dfu_settings_reinit(void)
{
// nrf_dfu_flash_read(0xFF000, m_dfu_settings_buffer, sizeof(new_dfu_setting_t));
bool settings_valid = settings_crc_ok();
bool settings_backup_valid = settings_backup_crc_ok();


if (settings_valid)
{
NRF_LOG_DEBUG("Using settings page.");
memcpy(&s_dfu_settings, m_dfu_settings_buffer, sizeof(nrf_dfu_settings_t));
new_dfu_setting_t new_dfu_setting = {0};

uint32_t setting_addr = 0;
// setting_addr = 0x27000 + s_dfu_settings.bank_0.image_size;
// setting_addr += 4096;
nrf_dfu_flash_read(0x78000, &new_dfu_setting, sizeof(new_dfu_setting_t));
NRF_LOG_INFO("new_dfu_setting.flag: %d", new_dfu_setting.flag);
NRF_LOG_INFO("new_dfu_setting.fw_addr: 0x%08x, new_dfu_setting.fw_size: 0x%08x", new_dfu_setting.fw_addr, new_dfu_setting.fw_size);
if(new_dfu_setting.flag == 0x01)    //Added the user-defined OTA mode, which is directly written to s_dfu_settings.
{
s_dfu_settings.progress.update_start_address = new_dfu_setting.fw_addr;
s_dfu_settings.bank_1.image_size = new_dfu_setting.fw_size;
s_dfu_settings.bank_1.image_crc = crc32_compute((uint8_t*)(s_dfu_settings.progress.update_start_address),s_dfu_settings.bank_1.image_size,NULL);
s_dfu_settings.bank_1.bank_code = NRF_DFU_BANK_VALID_APP;
s_dfu_settings.crc = settings_crc_get(&s_dfu_settings);
memcpy(s_dfu_settings.boot_validation_app.bytes, &s_dfu_settings.bank_1.image_crc, 4);
ret_code_t err_code = nrf_dfu_settings_write(NULL);
if(err_code != NRF_SUCCESS) return;

new_dfu_setting.flag = 0;
err_code = nrf_dfu_flash_store(0x78000, &new_dfu_setting, sizeof(new_dfu_setting_t), NULL);
if(err_code == NRF_SUCCESS)
NRF_LOG_INFO("write new_dfu_setting success");
//nrf_dfu_flash_erase(0x78000, 1, NULL);

}
else if (settings_backup_valid)
{
NRF_LOG_DEBUG("Copying forbidden parts from backup page.");
settings_forbidden_parts_copy_from_backup((uint8_t *)&s_dfu_settings);
}
}
else if (settings_backup_valid)
{
NRF_LOG_INFO("Restoring settings from backup since the settings page contents are "
"invalid (CRC error).");
memcpy(&s_dfu_settings,
mp_dfu_settings_backup_buffer,
sizeof(nrf_dfu_settings_t));
}
else
{
NRF_LOG_WARNING("Resetting bootloader settings since neither the settings page nor the "
"backup are valid (CRC error).");
memset(&s_dfu_settings, 0x00, sizeof(nrf_dfu_settings_t));
s_dfu_settings.settings_version = NRF_DFU_SETTINGS_VERSION;
}

if (NRF_DFU_SETTINGS_COMPATIBILITY_MODE && !NRF_DFU_IN_APP && (s_dfu_settings.settings_version == 1))
{
NRF_LOG_INFO("Old settings page detected. Upgrading info.");

// Old version. Translate.
memcpy(&s_dfu_settings.peer_data, (uint8_t *)&s_dfu_settings + DFU_SETTINGS_BOND_DATA_OFFSET_V1, NRF_DFU_PEER_DATA_LEN);
memcpy(&s_dfu_settings.adv_name, (uint8_t *)&s_dfu_settings + DFU_SETTINGS_ADV_NAME_OFFSET_V1, NRF_DFU_ADV_NAME_LEN);

// Initialize with defaults.
s_dfu_settings.boot_validation_softdevice.type = NO_VALIDATION;
s_dfu_settings.boot_validation_app.type = VALIDATE_CRC;
s_dfu_settings.boot_validation_bootloader.type = NO_VALIDATION;
memcpy(s_dfu_settings.boot_validation_app.bytes, &s_dfu_settings.bank_0.image_crc, sizeof(uint32_t));

s_dfu_settings.settings_version = NRF_DFU_SETTINGS_VERSION;
}

return;
}

Fullscreen 2474.log.txt Download

<info> app: s_set<info> app: Inside main

<debug> app: In nrf_bootloader_init

<debug> nrf_dfu_settings: Calling nrf_dfu_settings_init()...

<debug> nrf_dfu_flash: Initializing nrf_fstorage_nvmc backend.

<debug> nrf_dfu_settings: Using settings page.

<debug> nrf_dfu_flash: nrf_fstorage_read()(addr=0x00078000

<info> nrf_dfu_settings: new_dfu_setting.flag: 0

<info> nrf_dfu_settings: new_dfu_setting.fw_addr: 0x0004B5E8, new_dfu_setting.fw_size: 0x00023638

<debug> nrf_dfu_settings: Copying forbidden parts from backup page.

<debug> nrf_dfu_settings: Destination settings are identical to source, write not needed. Skipping.

<info> nrf_dfu_settings: Backing up settings page to address 0xFE000.

<debug> nrf_dfu_settings: Destination settings are identical to source, write not needed. Skipping.

<debug> app: Enter nrf_bootloader_fw_activate

<debug> app: Valid App

<debug> app: Enter nrf_dfu_app_continue

<info> nrf_bootloader_wdt: WDT is not enabled

<debug> nrf_dfu_flash: nrf_fstorage_erase(addr=0x0x0002F000, len=8 pages), queue usage: 1

<debug> nrf_dfu_flash: Flash erase success: addr=0x0002F000, pending 0

<debug> app: Copying 0x535E8 to 0x2F000, size: 0x8000

<debug> nrf_dfu_flash: nrf_fstorage_write(addr=0x0002F000, src=0x000535E8, len=32768 bytes), queue usage: 1

<debug> nrf_dfu_flash: Flash write success: addr=0x0002F000, pending 0

<debug> nrf_dfu_settings: Writing settings...

<debug> nrf_dfu_settings: Erasing old settings at: 0x000FF000

<debug> nrf_dfu_flash: nrf_fstorage_erase(addr=0x0x000FF000, len=1 pages), queue usage: 1

<debug> nrf_dfu_flash: Flash erase success: addr=0x000FF000, pending 0

<debug> nrf_dfu_flash: nrf_fstorage_write(addr=0x000FF000, src=0x20007F54, len=896 bytes), queue usage: 1

<debug> nrf_dfu_flash: Flash write success: addr=0x000FF000, pending 0

<info> nrf_dfu_settings: Backing up settings page to address 0xFE000.

<debug> nrf_dfu_settings: Writing settings...

<debug> nrf_dfu_settings: Erasing old settings at: 0x000FE000

<debug> nrf_dfu_flash: nrf_fstorage_erase(addr=0x0x000FE000, len=1 pages), queue usage: 1

<debug> nrf_dfu_flash: Flash erase success: addr=0x000FE000, pending 0

<debug> nrf_dfu_flash: nrf_fstorage_write(addr=0x000FE000, src=0x200082D4, len=896 bytes), queue usage: 1

<debug> nrf_dfu_flash: Flash write success: addr=0x000FE000, pending 0

<debug> nrf_dfu_flash: nrf_fstorage_erase(addr=0x0x00037000, len=8 pages), queue usage: 1

<debug> nrf_dfu_flash: Flash erase success: addr=0x00037000, pending 0

<debug> app: Copying 0x5B5E8 to 0x37000, size: 0x8000

<debug> nrf_dfu_flash: nrf_fstorage_write(addr=0x00037000, src=0x0005B5E8, len=32768 bytes), queue usage: 1

<debug> nrf_dfu_flash: Flash write success: addr=0x00037000, pending 0

<debug> nrf_dfu_settings: Writing settings...

<debug> nrf_dfu_settings: Erasing old settings at: 0x000FF000

<debug> nrf_dfu_flash: nrf_fstorage_erase(addr=0x0x000FF000, len=1 pages), queue usage: 1

<debug> nrf_dfu_flash: Flash erase success: addr=0x000FF000, pending 0

<debug> nrf_dfu_flash: nrf_fstorage_write(addr=0x000FF000, src=0x20007F54, len=896 bytes), queue usage: 1

<debug> nrf_dfu_flash: Flash write success: addr=0x000FF000, pending 0

<info> nrf_dfu_settings: Backing up settings page to address 0xFE000.

<debug> nrf_dfu_settings: Writing settings...

<debug> nrf_dfu_settings: Erasing old settings at: 0x000FE000

<debug> nrf_dfu_flash: nrf_fstorage_erase(addr=0x0x000FE000, len=1 pages), queue usage: 1

<debug> nrf_dfu_flash: Flash erase success: addr=0x000FE000, pending 0

<debug> nrf_dfu_flash: nrf_fstorage_write(addr=0x000FE000, src=0x200082D4, len=896 bytes), queue usage: 1

<debug> nrf_dfu_flash: Flash write success: addr=0x000FE000, pending 0

<debug> nrf_dfu_flash: nrf_fstorage_erase(addr=0x0x0003F000, len=8 pages), queue usage: 1

<debug> nrf_dfu_flash: Flash erase success: addr=0x0003F000, pending 0

<debug> app: Copying 0x635E8 to 0x3F000, size: 0x8000

<debug> nrf_dfu_flash: nrf_fstorage_write(addr=0x0003F000, src=0x000635E8, len=32768 bytes), queue usage: 1

<debug> nrf_dfu_flash: Flash write success: addr=0x0003F000, pending 0

<debug> nrf_dfu_settings: Writing settings...

<debug> nrf_dfu_settings: Erasing old settings at: 0x000FF000

<debug> nrf_dfu_flash: nrf_fstorage_erase(addr=0x0x000FF000, len=1 pages), queue usage: 1

<debug> nrf_dfu_flash: Flash erase success: addr=0x000FF000, pending 0

<debug> nrf_dfu_flash: nrf_fstorage_write(addr=0x000FF000, src=0x20007F54, len=896 bytes), queue usage: 1

<debug> nrf_dfu_flash: Flash write success: addr=0x000FF000, pending 0

<info> nrf_dfu_settings: Backing up settings page to address 0xFE000.

<debug> nrf_dfu_settings: Writing settings...

<debug> nrf_dfu_settings: Erasing old settings at: 0x000FE000

<debug> nrf_dfu_flash: nrf_fstorage_erase(addr=0x0x000FE000, len=1 pages), queue usage: 1

<debug> nrf_dfu_flash: Flash erase success: addr=0x000FE000, pending 0

<debug> nrf_dfu_flash: nrf_fstorage_write(addr=0x000FE000, src=0x200082D4, len=896 bytes), queue usage: 1

<debug> nrf_dfu_flash: Flash write success: addr=0x000FE000, pending 0

<debug> nrf_dfu_flash: nrf_fstorage_erase(addr=0x0x00047000, len=4 pages), queue usage: 1

ding 0

<debug> app: Copying 0x6B5E8 to 0x47000, size: 0x3638

<debug> nrf_dfu_flash: nrf_fstorage_write(addr=0x00047000, src=0x0006B5E8, len=13880 bytes), queue usage: 1

<debug> nrf_dfu_flash: Flash write success: addr=0x00047000, pending 0

<debug> nrf_dfu_settings: Writing settings...

<debug> nrf_dfu_settings: Erasing old settings at: 0x000FF000

<debug> nrf_dfu_flash: nrf_fstorage_erase(addr=0x0x000FF000, len=1 pages), queue usage<info> app: Inside main

<debug> app: In nrf_bootloader_init

<debug> nrf_dfu_settings: Calling nrf_dfu_settings_init()...

<debug> nrf_dfu_flash: Initializing nrf_fstorage_nvmc backend.

<debug> nrf_dfu_settings: Using settings page.

<debug> nrf_dfu_flash: nrf_fstorage_read()(addr=0x00078000

<info> nrf_dfu_settings: new_dfu_setting.flag: 0

<info> nrf_dfu_settings: new_dfu_setting.fw_addr: 0x0004B5E8, new_dfu_setting.fw_size: 0x00023638

<debug> nrf_dfu_settings: Copying forbidden parts from backup page.

<debug> nrf_dfu_settings: Destination settings are identical to source, write not needed. Skipping.

<info> nrf_dfu_settings: Backing up settings page to address 0xFE000.

<debug> nrf_dfu_settings: Destination settings are identical to source, write not needed. Skipping.

<debug> app: Enter nrf_bootloader_fw_activate

<info> app: No firmware to activate.

<debug> app: App is valid

<info> nrf_dfu_settings: Backing up settings page to address 0xFE000.

<debug> nrf_dfu_settings: Destination settings are identical to source, write not needed. Skipping.

<debug> app: Running nrf_bootloader_app_start with address: 0x00001000

<debug> app: Disabling interrupts. NVIC->ICER[0]: 0x0