Hello,
my current problem is, that my application is not running when flashing it via BLE DFU using nrf52832 on BLE Nano V2 and nrfConnect. But the same code runs fine, when flashing the application over SWD (the DAPLink USB Companion Board of the BLE Nano). So I tried to comment out the code I've added last time and tried to transfer the application once again over BLE and it worked..... I added the code step by step to my program again and tested the DFU update mechanism after every step. At some point the application is not starting anymore after flashing it via BLE DFU. But I don't think, that this is specific to my applications source code, because the application runs without problems when flashing over cable. Could it be a memory problem while updating? Because if code is comment out the application size is smaller of course...
I'm using sdk v15, s132 v6, eclipse, gcc and I'm only updating the application not the softdevice or the bootloader.
While searching for the error, I tried to enable the logging functionality with UART as backend in the bootloader, which is basically the example from the sdk. But after modifying the makefile and the sdkconfig.h I get a linker error which says:
_build/nrf52832_xxaa_s132/nrfx_uarte.c.o (symbol from plugin): In function `m_nrf_log_UARTE_logs_data_const':
(.text+0x0): multiple definition of `UARTE0_UART0_IRQHandler'
_build/nrf52832_xxaa_s132/nrfx_uart.c.o (symbol from plugin):(.text+0x0): first defined here
I just added the header and source files to the bootloader project, necessary for logging over uart, I did no changes in the code.
If someone could help me to solve the linker problem, maybe I get one step further with the DFU problem ;)
EDIT: The DFU Update works now. But I don't know exactly why... In the meantime I worked at the same program on a button for entering sys off state. While testing this, I found out that the BLE Update works now, the transfered application runs. But I also found out, another part of my code doesn't work which I didn't touched without any error messages.... I think there's one big general problem, but I can't see the context... It's weired.....
Thanks in advance
Markus
