nRF52833: CDC ACM USB Bootloader example is not available.

[Akib]

Using windows 10 OS, and SES v5.40.

I am using nRF52833 device in my project along with nRF5_SDK_for_Thread_and Zigbee_v4.1.0_32ce5f8 SDK.

As we can see that there is an example of CDC ACM USB Bootloader available for nRF52840 only https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.0.0/sdk_app_serial_dfu_bootloader.html but we need for nRF52833.

so is there any example of CDC ACM USB Bootloader available for nRF52833 or supports nRF52833?

[Akib]

Hi,

Thanks for the support we are able flash our application in custom PCB.

first its was not jumping to application so we generated bootloader settings then its start our application and it is working but few of functionality are not working and the strange thing is that if we run our application without MBR then every thing is working fine.

so is there any thing we are missed to do or how this issue will fixed?

Without MBR flash and RAM address	With MBR flash and RAM address
FLASH_PH_START=0x0 FLASH_PH_SIZE=0x80000 RAM_PH_START=0x20000000 RAM_PH_SIZE=0x20000 FLASH_START=0x000 FLASH_SIZE=0x7e000 RAM_START=0x20000000 RAM_SIZE=0x20000	FLASH_PH_START=0x0 FLASH_PH_SIZE=0x80000 RAM_PH_START=0x20000000 RAM_PH_SIZE=0x20000 FLASH_START=0x1000 FLASH_SIZE=0x70000 RAM_START=0x20000008 RAM_SIZE=0x1fff8

[Einar Thorsrud]

Hi,

I do not spot any issue in the memory configuration. Can you elaborate on what is not working when you use the MBR? We probably need to start there to understand how the presence of a MBR can impact it.