5340 hwo to DFU external Flash

[yoyou]

Hello,

NRF5340,  NCS2.0.2,  VScode

I designed a headset，MCU is 5340, and a external flash for DSP program.

the external flash connect to DSP and 5340 use SPI;

i can DFU 5340MCU self,

how to  DFU external Flash for DSP program?

App_dfu.zip update to 5340 self,   DSP_dfu.zip update to external falsh.

is there any demo?

                          

Best regards

[bdodge09]

You can read/write external flash from the 5340 to update the DSP.  Look at the sample in ncs called ./sdk-zephyr/samples/drivers/spi_flash/src/main.c   It shows how to access qspi nor flash.

[yoyou]

i know how to write to flash,

my question is:  in DFUing, How to distinguish the download data is app or for external Flash?

ps:

in nRF5_SDK_17.0.2\examples\dfu\secure_bootloader\ 

verify receive data , then distinguish the data, then do update APP or write to external Flash.

in NCS where is bootloader codes and how to change it?

see code as follow, NCS only

#include <mgmt/mcumgr/smp_bt.h>

#include "os_mgmt/os_mgmt.h"

#include "img_mgmt/img_mgmt.h"

not use bootloader?

#include <bluetooth/bluetooth.h>
#if defined (NRF5340_XXAA_APPLICATION)
  #define CLOCK_FEATURE_HFCLK_DIVIDE_PRESENT
  #include "nrfx_clock.h"
#endif
#include <zephyr.h>
#include <sys/printk.h>
#include <devicetree.h>
#include <logging/log.h>
#include <device.h>
#include <drivers/gpio.h>
#include <hal/nrf_gpio.h>
#include <drivers/gpio.h>
#include <sys/reboot.h>
#include <settings/settings.h>
#include <mgmt/mcumgr/smp_bt.h>
#include "os_mgmt/os_mgmt.h"
#include "img_mgmt/img_mgmt.h"

LOG_MODULE_REGISTER(main, 4);

void ota()
{
	printk("\n----------------OTA doing----------------\n\n");
	os_mgmt_register_group();
	img_mgmt_register_group();
	smp_bt_register();

	int err = bt_enable(NULL);
	if (err) {
		printk("Bluetooth init failed (err %d)\n", err);
		return;
	}
	if (IS_ENABLED(CONFIG_SETTINGS)) {
		settings_load();
	}

	err = bt_le_adv_start(BT_LE_ADV_CONN, upad, ARRAY_SIZE(upad),upsd, ARRAY_SIZE(upsd));
	if (err) {
		printk("Advertising failed to start (err %d)\n", err);
		return;
	}
	printk("   OTA Advertising started: %s\n",bt_get_name());
	
	// if wait no OTA start, timeout 3min will reboot
	for (int i=0;i<180;i++) {
		k_msleep(1000);
	}
	printk("\n---------------OTA timeout---------------\n\n");
	sys_reboot(0);
}

void main(void)
{
	ota();
	while(true){
		printk("********Hello World!********\n" );
		k_msleep(1000);
	}
}

  

Best regards

[AHaug]

For more information about MCUboot I suggest you examine the MCUboot-documentation pages for NCS:

• https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/mcuboot/wrapper.html

In addition I recommend you have a look at the adding dfu support to your application

•  Add DFU support to your application 
• https://devzone.nordicsemi.com/guides/nrf-connect-sdk-guides/b/software/posts/ncs-dfu#serial_dfu_ext_flash

The next item I would have a look at is the following ticket

•  ncs external flash ota change qspi to spi 

Here you will find this sample for NCS v1.7.1, where with a DFU sample that uses BLE and writes the data to external flash. This ticket should also give some information about how to write and read from a specific part of the external flash

Kind regards,
Andreas