Change DFU start address and application start address

[Kadi Chang]

I changed the dfu start address to 0x00 and application start address to 0x8000. The application use the RTC0 IRQ to count the timer, but the RTC0 IRQ did not work correct(if the start application address is 0x00,the IRQ is work). Are there other config file should be modify for shift the start address?

[Stefan Birnir Sverrisson]

Hi

I am not exactly sure what you are trying to do but you can change the start address for the bootloader by modifying the BOOTLOADER_REGION_START constant in dfu_types.h file in the bootloader project in the nRF51 SDK. You should also modify the IROM Start and Size addresses accordingly in KEIL ->Options for Target -> Target

[Kadi Chang]

Hi I had modify the dfu_types.h and keil,it still not correct. I check the RTC0 's register, it has correct interrupt event, but the main loop did not jump to RTC0 IRQ. I also check the map file from keil,the RTC0 IRQ is local in the correct address(after the 0x8000)

Map file info startup_arm_nrf51.o(RESET) refers to nrf51_it.o(i.RTC0_IRQHandler) for RTC0_IRQHandler

i.RTC0_IRQHandler 0x00008184 Section 0 nrf51_it.o(i.RTC0_IRQHandler)

RTC0_IRQHandler 0x00008185 Thumb Code 34 nrf51_it.o(i.RTC0_IRQHandler)

0x00008184 0x0000002c Code RO 254 i.RTC0_IRQHandler nrf51_it.o