Is there any feasibility for use bluetooth dfu with SINGLE_APPLICATION_SLOT?

Question

Hi everyone. 
 I'm developing a product with nRF5340 and zephyr os. But I found some problems about bluetooth dfu. 
 Because my application very big. So I can't use defualt double slot bluetooth dfu. 
 Who you know how to config SINGLE_APPLICATION_SLOT with bluetooth DFU? 
 
 Thank you.

wasan · Accepted Answer

Hi 
 Thank you for you help. After trying for a long time I was successful in put the second slot(s1) on an external flash. 
 
 How to run my example 
 step 1. I edit file pm.yml at $SDK_PATH/ncs/bootloader/mcuboot/boot/zephyr/pm.yml 
 from 
 mcuboot_secondary:
 share_size: [mcuboot_primary]
 placement:
 align: {start: CONFIG_FPROTECT_BLOCK_SIZE}
 after: mcuboot_primary

 
 to 
 mcuboot_secondary:
 region: external_flash
 size: CONFIG_PM_EXTERNAL_FLASH_SIZE
 address: 0x0
 device: MX25R64
 
 and 
 step 2. unzip my example to $SDK_PATH/ncs/zephyr/sample/ 
 step 3. using cd command to $SDK_PATH/ncs/zephyr/sample/smp_svr_qspi_flash 
 step 4. compile source code with 
 west build -b nrf5340dk_nrf5340_cpuapp .
west flash 
 step 5. Edit some source code and build it again. 
 step 6. Copy file app_update.bin to your mobile phone. Which the file is located at $$SDK_PATH/ncs/zephyr/sample/smp_svr_qspi_flash/build/zephyr/app_update.bin 
 step 7. Update firmware with "nRF Connect Device Manager" mobile app. 
 smp_svr_qspi_flash.zip

Is there any feasibility for use bluetooth dfu with SINGLE_APPLICATION_SLOT?

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