Where can I find examples of OTA upgrades using external Flash in NCS 1.9.1?

Question

Hi, 
 As shown in the subject, I am developing a product which needs to support extern Flash-based BT OTA-upgrade. So w here can I find examples of OTA-upgrade using external Flash in NCS 1.9.1? 
 
 Platform: Windows 10 
 NCS version: 1.9.1 
 Boards: nrf52840dk_nrf52840 
 IDE: SEGGER Embedded Studio （ SES ） 
 
 Thanks

user14926 · Accepted Answer

Hi, 
 If you have configured the MCUboot image slots correctly, the update should be stored in the external flash. 
 If you want to verify this, you could check if the firmware update is stored in the external flash by reading out the content before and after OTA, and compare it to see that the firmware update was stored. You could also try to update a firmware that takes up more than 50 % of the internal flash, twice. Since the BLE stack is integrated with the firmware, you need to perform a dual slot update, which would not be possible if the firmware is larger than 50% of the internal flash. This will only work when the second image slot is placed in external flash. 
 Best regards, Jørgen

Where can I find examples of OTA upgrades using external Flash in NCS 1.9.1?

Top Replies