DFU Process

RE: DFU Process

RAJVARDHAN — Wed, 24 Jul 2024 04:55:27 GMT

1. Hi thanks for your reply let me explain in simple way in booloader_ble_debug sdk after while performing dfu the new firmware is going to write in the flash instead of writing the data in flash the same should be sent in the uart

2. flash -> replace with UART transfer

3. So whenever it is required we will write in flash or we will send same data in UART only one at a time

4. we need to achieve this in booloader_ble_debug app

New_firmware_write_func

if(cond)

{

uart_tx(data)

}

else

{

rc = nrf_fstorage_write(&m_fs, dest, p_src, len, (void *)callback);

}

5. We enabled UART transport in nrf_dfu_serial_uart.c for the nRF52840 using SDK version 17.1.0, S140. The relevant code is in examples/dfu/secure_bootloader/pca10056_s140_ble_debug:

DFU_TRANSPORT_REGISTER(nrf_dfu_transport_t const uart_dfu_transport) =
{
.init_func = uart_dfu_transport_init,
.close_func = uart_dfu_transport_close,
};

RE: DFU Process

Amanda Hsieh — Tue, 23 Jul 2024 16:01:20 GMT

We are currently understaffed due to the summer vacation period, so delayed replies must be expected. I am sorry about any inconvenience this might cause.

[quote user=""]nrf52840 17.1.0 s140 SDK :- examples/dfu/secure_bootloader/pca10056_s140_ble_debug[/quote][quote user="RAJVARDHAN"]We are not using UART for logging; instead, we are sending binary data over UART, which is received during the DFU process.[/quote]

I think you could use nRF5_SDK_17.1.0_ddde560\examples\dfu\secure_bootloader\pca10056_uart. See Secure DFU Bootloader over Serial Link (UART/USB)

RE: DFU Process

RAJVARDHAN — Tue, 23 Jul 2024 09:26:06 GMT

Hi Amanda,

We are not using UART for logging; instead, we are sending binary data over UART, which is received during the DFU process.

we are facing some error during transmitting the data :

static void on_write(ble_dfu_t * p_dfu, ble_evt_t const * p_ble_evt)

{

nrf_drv_uart_tx(&m_uart, data, length);

}

error:

<error> nrf_dfu_serial_uart: UART buffer is busy after 3 retries
<error> nrf_dfu_ble: Failed to send data via UART: 0x11

RE: DFU Process

Amanda Hsieh — Thu, 18 Jul 2024 13:35:47 GMT

Then try to use RTT for the log.

RE: DFU Process

RAJVARDHAN — Thu, 18 Jul 2024 04:42:22 GMT

Hi Amanda,

We need to use UART to transfer the received data to another controller. We do not want to store the data in flash; instead, we want to transfer the data directly to the controller through UART.

RE: DFU Process

Amanda Hsieh — Wed, 17 Jul 2024 13:29:05 GMT

Hi,

[quote user=""]I tried to print the received BLE packet using UART, but encountered the following error in the log:[/quote]

It sounds like you want to use UART for logging, but you could use RTT for the same purpose.

The log shows that you have included both the BLE and UART transport in your bootloader, so another soluction is not to add the uart serial dfu transport.

Regards,
Amanda H.