BLE communication between a nRF52 DK board and a nRF9160 DK board

[Timothy]

I am running V2.5.0 SDK. I have a nRF52 DK board that is running the V2.5.0/nrf/samples/Bluetooth/peripheral_uart application. It is working beautifully. I have nRF Toolbox installed on my iPhone. I can connect to the nRF52 DK Bluetooth running the NUS UART service. I can send text strings back and forth from my iPhone to the nrf52DK baord. We have been using the nRF9160 processor for years and we are very comfortable with its operation. We have never used the Bluetooth feature on the nRF9160. I have a nRF9160 dk board that I would like to implement the NUS UART Bluetooth connection like I have running with the iPhone using nRF Toolbox. I want an application on the nRF9160 to search for BLE devices advertising the UART service. I want to connect to that BLE device and be able to send text string back and forth like I can do on my iPhone. I tried the "Bluetooth central UART" but it does not support the nRF9160 as a valid board.

what do I need to do to implement a simple BLE connection between the nRF52DK and the nRF9160DK so I can send text strings back and forth simulating a UART.I have not used any BLE functions until we received the nrf52DK board. I am sure it is operator error. Our application depends on the BLE capability to talk between an nRF52 and a nRF9160. any help would be greatly appreciated.

[Timothy]

errors now are shown below. A different undefined.  I was hoping the sample Bluetooth/central_uart would be the simple way to connect to the Bluetooth/peripheral_uart but that does not seem to work.

what am I missing?

zephyr/CMakeFiles/offsets.dir/./arch/arm/core/offsets/offsets.c.obj -L"c:/nordic1/toolchains/c57af46cb7/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/thumb/v8-m.main/nofp" -LC:/Nordic1/test_n160/central_uart_n9160/build/zephyr -lgcc zephyr/arch/common/libisr_tables.a -mcpu=cortex-m33 -mthumb -mabi=aapcs -mfp16-format=ieee -Wl,--gc-sections -Wl,--build-id=none -Wl,--sort-common=descending -Wl,--sort-section=alignment -Wl,-u,_OffsetAbsSyms -Wl,-u,_ConfigAbsSyms -nostdlib -static -Wl,-X -Wl,-N -Wl,--orphan-handling=warn -Wl,-no-pie -DPICOLIBC_INTEGER_PRINTF_SCANF C:/Nordic1/v2.5.0/nrfxlib/crypto/nrf_cc310_platform/lib/cortex-m33/soft-float/no-interrupts/libnrf_cc310_platform_0.9.18.a --specs=picolibc.specs -lc -lgcc && cmd.exe /C "cd /D C:\Nordic1\test_n160\central_uart_n9160\build\zephyr && C:\Nordic1\toolchains\c57af46cb7\opt\bin\cmake.exe -E true""
c:/nordic1/toolchains/c57af46cb7/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: zephyr/drivers/bluetooth/libdrivers__bluetooth.a(h4.c.obj): in function `uart_irq_rx_disable':
C:\Nordic1\test_n160\central_uart_n9160\build\zephyr\include\generated\syscalls\uart.h:278: undefined reference to `__device_dts_ord_123'
c:/nordic1/toolchains/c57af46cb7/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: zephyr/drivers/bluetooth/libdrivers__bluetooth.a(h4.c.obj): in function `z_impl_uart_irq_rx_enable':
C:\Nordic1\v2.5.0\zephyr\include\zephyr\drivers\uart.h:960: undefined reference to `__device_dts_ord_123'
c:/nordic1/toolchains/c57af46cb7/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: zephyr/drivers/bluetooth/libdrivers__bluetooth.a(h4.c.obj): in function `uart_irq_tx_disable':
C:\Nordic1\test_n160\central_uart_n9160\build\zephyr\include\generated\syscalls\uart.h:230: undefined reference to `__device_dts_ord_123'
c:/nordic1/toolchains/c57af46cb7/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: zephyr/drivers/bluetooth/libdrivers__bluetooth.a(h4.c.obj): in function `h4_send':
C:\Nordic1\v2.5.0\zephyr\drivers\bluetooth\hci\h4.c:490: undefined reference to `__device_dts_ord_123'
c:/nordic1/toolchains/c57af46cb7/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: zephyr/drivers/bluetooth/libdrivers__bluetooth.a(h4.c.obj): in function `uart_fifo_read':
C:\Nordic1\v2.5.0\zephyr\include\zephyr\drivers\uart.h:820: undefined reference to `__device_dts_ord_123'
c:/nordic1/toolchains/c57af46cb7/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: zephyr/drivers/bluetooth/libdrivers__bluetooth.a(h4.c.obj):C:\Nordic1\v2.5.0\zephyr\drivers\bluetooth\hci\h4.c:560: more undefined references to `__device_dts_ord_123' follow
collect2.exe: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
FATAL ERROR: command exited with status 1: 'C:\Nordic1\toolchains\c57af46cb7\opt\bin\cmake.EXE' --build 'c:\Nordic1\test_n160\central_uart_n9160\build'

* The terminal process terminated with exit code: 1.
* Terminal will be reused by tasks, press any key to close it.

[Vidar Berg]

I'm afraid I don't have an explanation for why it is failing to build now. I had a coworker try the same project I uploaded here, and he couldn't reproduce the issue either. 

Here's a screenshot of what I'm seeing after building the project for comparison:

But did you try with the Cellular: LTE Sensor Gateway sample? As mentioned earlier, I took must of my changes from that project, so it would be interesting to know if it results in the same errors or not.

[Timothy]

I get similar messages if I just build the LTE App unchanged.

[Timothy]

I started from scratch. I unzipped your file and opened existing application and rebuilt the application. I still get the errors. below is my screen shot similar to yours.  what am I doing wrong or missing?

[Timothy]

I did get LTE_BLE_GATEWAY allpication to build and run. The output is what is shown below.

*** Booting nRF Connect SDK v2.5.0 ***Resetting system
[00:00:00.251,770] <inf> lte_ble_gw: LTE Sensor Gateway sample started
[00:00:00.251,953] <inf> lte_ble_gw: Initializing Bluetooth..
[00:00:00.499,328] <inf> lte_ble_gw: Establishing LTE link (this may take some time) ...
ASSERTION FAIL [err == 0] @ WEST_TOPDIR/zephyr/subsys/bluetooth/host/hci_core.c:338
command opcode 0x0c03 timeout with err -11
[00:00:10.262,481] <err> os: r0/a1: 0x00000003 r1/a2: 0x00000000 r2/a3: 0x00000002
[00:00:10.262,512] <err> os: r3/a4: 0x2000d218 r12/ip: 0x00000010 r14/lr: 0x000102b5
[00:00:10.262,512] <err> os: xpsr: 0x41000000
[00:00:10.262,542] <err> os: Faulting instruction address (r15/pc): 0x000102c0
[00:00:10.262,573] <err> os: >>> ZEPHYR FATAL ERROR 3: Kernel oops on CPU 0
[00:00:10.262,603] <err> os: Current thread: 0x2000f7e0 (unknown)
*** Booting nRF Connect SDK v2.5.0 ***Resetting system