Supported Boards
LogScope works with any board that supports SEGGER RTT (J-Link) or Serial UART. The demo firmware has been tested on the following boards. For build instructions, see the generic Zephyr demo or the BLE HCI demo.
Tested Boards
Section titled “Tested Boards”| Board | Vendor | Zephyr Target | Buttons | J-Link | Price |
|---|---|---|---|---|---|
| nRF52840 DK | Nordic | nrf52840dk/nrf52840 | 4 | Built-in | ~$49 |
| nRF54L15 DK | Nordic | nrf54l15dk/nrf54l15/cpuapp | 4 | Built-in | ~$49 |
| nRF5340 DK | Nordic | nrf5340dk/nrf5340/cpuapp | 4 | Built-in | ~$49 |
| xG24 Explorer Kit | Silicon Labs | xg24_ek2703a | 2 | Reflash required | ~$40 |
| NUCLEO-H753ZI | STMicro | nucleo_h753zi | 1 | Reflash required | ~$28 |
| NUCLEO-F401RE | STMicro | nucleo_f401re | 1 | Reflash required | ~$14 |
| FRDM-MCXN947 | NXP | frdm_mcxn947/mcxn947/cpu0 | 2 | Reflash required | ~$26 |
J-Link Setup by Vendor
Section titled “J-Link Setup by Vendor”Nordic DKs
Section titled “Nordic DKs”No setup needed. All Nordic DKs have a built-in J-Link debug probe. RTT works immediately.
STMicro Nucleo Boards
Section titled “STMicro Nucleo Boards”Nucleo boards ship with ST-Link, which needs to be reflashed to J-Link firmware:
- Download the free STLinkReflash utility from SEGGER
- Run the utility and select “Upgrade to J-Link”
- Done. The conversion is reversible if you need ST-Link back.
Silicon Labs xG24
Section titled “Silicon Labs xG24”The xG24 debug probe needs J-Link firmware:
- Open Simplicity Studio
- Go to the debug probe configuration
- Flash the J-Link firmware
NXP FRDM Boards
Section titled “NXP FRDM Boards”FRDM boards ship with MCU-Link/OpenSDA:
- Download the J-Link firmware for your board from SEGGER’s OpenSDA page
- Put the board in bootloader mode (hold reset while plugging in USB)
- Drag and drop the firmware file to the bootloader drive
Using an External J-Link Probe
Section titled “Using an External J-Link Probe”If your board doesn’t have a built-in J-Link (or the built-in probe can’t be reflashed), you can use an external J-Link probe connected to the board’s SWD/JTAG header. You may need to configure logscope.jlink.device to match your target chip.
Any SEGGER J-Link model works. The J-Link EDU Mini (~$20) is the most affordable option for hobbyists.
Building the Demo
Section titled “Building the Demo”For boards with built-in J-Link (or after reflashing):
west build -b <target> samples/zephyr-generic-demo -pwest flashReplace <target> with the Zephyr board target from the table above.