NRF54L15 IPC Example

[Truth129]

Can you add an example of IPC usage or icmsg to communicated between the app core and the flpr? I tried using the dk example but it just resulted in hard fault after flashing. Thanks!

[Toastee0]

I have created a set of board definitions capable of building the multicore HPF MSPI application sample on the XIAO nRF54L15, when I flash it to the device, and then reset the device, it prints this over serial console.

which i consider a sign of success.

I can be reached on the seeed discord for assistance using the board definitions in my fork of this repo to compile IPC based applications on the NRF54l15, as my board definitions include the required IPC device definitions.

this is the application sample that I used to test & refine my new board definitions:

https://github.com/nrfconnect/sdk-nrf/blob/main//applications/hpf/mspi/README.rst

here's the build configuration used.

Here's the full log of the successful compile & flash :
successlog.txt

[Truth129]

I can get the FLPR to run using blinky with the nordic-flpr snippet. However, when I try to use the icmsg example and create custom dt overlays for the xiao based on the dk overlays, it compiles but results in a hard fault after flashing.

❯ west flash --build-dir build
-- west flash: rebuilding
[0/6] Performing build step for 'remote'
ninja: no work to do.
[1/6] Performing build step for 'icmsg'
ninja: no work to do.
[6/6] Completed 'icmsg'
-- west flash: using runner openocd
-- runners.openocd: Flashing file: /Users/sachj/Documents/icmsg/build/icmsg/zephyr/zephyr.hex
Open On-Chip Debugger 0.12.0
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
nrf54l-load
Info : Using CMSIS-DAPv2 interface with VID:PID=0x2886:0x0066, serial=5B757793
Info : CMSIS-DAP: SWD supported
Info : CMSIS-DAP: FW Version = 2.0.0
Info : CMSIS-DAP: Serial# = 5B757793
Info : CMSIS-DAP: Interface Initialised (SWD)
Info : SWCLK/TCK = 1 SWDIO/TMS = 1 TDI = 0 TDO = 0 nTRST = 0 nRESET = 0
Info : CMSIS-DAP: Interface ready
Info : clock speed 1000 kHz
Info : SWD DPIDR 0x6ba02477
Info : [nrf54l.cpu] Cortex-M33 r1p0 processor detected
Info : [nrf54l.cpu] target has 8 breakpoints, 4 watchpoints
Info : starting gdb server for nrf54l.cpu on 3333
Info : Listening on port 3333 for gdb connections
Info : gdb port disabled
TargetName Type Endian TapName State

---

0* nrf54l.cpu cortex_m little nrf54l.cpu running
1 nrf54l.aux mem_ap little nrf54l.cpu running

[nrf54l.cpu] halted due to debug-request, current mode: Thread
xPSR: 0xf9000000 pc: 0x00000ca8 msp: 0x20000858
54748 bytes written at address 0x00000000
17372 bytes written at address 0x0000d5e0
downloaded 72120 bytes in 1.379938s (51.038 KiB/s)

Error: [nrf54l.cpu] clearing lockup after double fault
[nrf54l.cpu] halted due to debug-request, current mode: Handler HardFault
xPSR: 0x09000003 pc: 0xeffffffe msp: 0x20000ed0
shutdown command invoked
-- west flash: using runner openocd
-- runners.openocd: Flashing file: /Users/sachj/Documents/icmsg/build/remote/zephyr/zephyr.hex
Open On-Chip Debugger 0.12.0
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
nrf54l-load
Info : Using CMSIS-DAPv2 interface with VID:PID=0x2886:0x0066, serial=5B757793
Info : CMSIS-DAP: SWD supported
Info : CMSIS-DAP: FW Version = 2.0.0
Info : CMSIS-DAP: Serial# = 5B757793
Info : CMSIS-DAP: Interface Initialised (SWD)
Info : SWCLK/TCK = 1 SWDIO/TMS = 1 TDI = 0 TDO = 0 nTRST = 0 nRESET = 0
Info : CMSIS-DAP: Interface ready
Info : clock speed 1000 kHz
Info : SWD DPIDR 0x6ba02477
Info : [nrf54l.cpu] Cortex-M33 r1p0 processor detected
Info : [nrf54l.cpu] target has 8 breakpoints, 4 watchpoints
Info : starting gdb server for nrf54l.cpu on 3333
Info : Listening on port 3333 for gdb connections
Info : gdb port disabled
TargetName Type Endian TapName State

---

0* nrf54l.cpu cortex_m little nrf54l.cpu halted
1 nrf54l.aux mem_ap little nrf54l.cpu running

[nrf54l.cpu] halted due to debug-request, current mode: Thread
xPSR: 0xf9000000 pc: 0x00003c24 msp: 0x20002ea8
1866 bytes written at address 0x00165000
41138 bytes written at address 0x0016574c
10928 bytes written at address 0x0016f800
360 bytes written at address 0x00174ab0
downloaded 54292 bytes in 1.030845s (51.433 KiB/s)

Error: [nrf54l.cpu] clearing lockup after double fault
[nrf54l.cpu] halted due to debug-request, current mode: Handler HardFault
xPSR: 0x09000003 pc: 0xeffffffe msp: 0x20000ed0
shutdown command invoked

[DarshGondalia]

+1 ^^

Trying out IPC for the nrf54L15 but no examples for the IPC to utilize max power of the chip. Facing the same issue.

[StarSphere-1024]

I tested the examples on the nRF54L15DK, but encountered an error during startup. It might be a bug that needs to be addressed by Nordic.

Additionally, I’ve uploaded an example for the XIAO_nRF54L15. It compiles successfully, but appears to fail at runtime — I’m unable to receive any output from the serial port.

I'll track these issues. PRs welcome if you find a solution!

[Truth129]

Thank you. Do you also get the cpu_app core halted during west flash?

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