boards/lpc55s69-evk/README.md
For more details about the board visit the NXP board website. More details about the chip can be found here
The primary tool used for flashing this board is LinkServer. You will need to install it. The recommended way is using the NXP official website.
Add to PATH: Ensure the LinkServer executable is in your system PATH.
To verify the installation, run:
$ LinkServer --version
To compile the Tock kernel and flash it to the board, navigate to the boards/lpc55s69-evk directory and run make flash-debug or make flash.
# Flash the Debug build
$ make debug
# Flash the Release build
$ make install
The Makefile is configured to auto-detect your OS (Windows/Linux) and the first connected probe. If you have multiple probes connected, you can specify one by ID:
$ make debug PROBE_ID="#2"
The expected output of the command is looking like this:
$ make flash-debug
INFO: Selected device LPC55S69:LPCXpresso55S69
INFO: Selected probe #1 OSA0AQJR (LPC-LINK2 CMSIS-DAP V5.224)
Ns: LinkServer RedlinkMulti Driver v25.12 (Dec 8 2025 18:34:00 - crt_emu_cm_redlink.exe build 1160)
Pc: ( 0) Reading remote configuration
Wc(03). No cache support.
Nc: Found generic directory XML file in C:\Users\User\AppData\Local\Temp\tmpbupiyfhi\crt_directory.xml
Pc: ( 5) Remote configuration complete
Nc: Reconnected to existing LinkServer process.
Nc: Probe Firmware: LPC-LINK2 CMSIS-DAP V5.224 (NXP Semiconductors)
Nc: Serial Number: OSA0AQJR
Nc: VID:PID: 1FC9:0090
Nc: USB Path: \\?\hid#vid_1fc9&pid_0090&mi_00#7&341d2066&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}
Nc: Using memory from core 0 after searching for a good core
Pc: ( 30) Emulator Connected
Nc: processor is in secure mode
Pc: ( 40) Debug Halt
Pc: ( 50) CPU ID
Nc: debug interface type = CoreSight DP (DAP DP ID 6BA02477) over SWD TAP 0
Nc: processor type = Cortex-M33 (CPU ID 00000D21) on DAP AP 0
Nc: number of h/w breakpoints = 8
Nc: number of flash patches = 0
Nc: number of h/w watchpoints = 4
Nc: Probe(0): Connected&Reset. DpID: 6BA02477. CpuID: 00000D21. Info: <None>
Nc: Debug protocol: SWD. RTCK: Disabled. Vector catch: Disabled.
Ns: Content of CoreSight Debug ROM(s):
Nc: RBASE E00FE000: CID B105100D PID 0000095000 ROM (type 0x1)
Nc: ROM 1 E00FF000: CID B105100D PID 04000BB4C9 ROM (type 0x1)
Nc: ROM 2 E000E000: CID B105900D PID 04000BBD21 CSt ARM ARMv8-M type 0x0 Misc - Undefined
Nc: ROM 2 E0001000: CID B105900D PID 04000BBD21 CSt ARM DWTv2 type 0x0 Misc - Undefined
Nc: ROM 2 E0002000: CID B105900D PID 04000BBD21 CSt ARM FPBv2 type 0x0 Misc - Undefined
Nc: ROM 2 E0000000: CID B105900D PID 04000BBD21 CSt ARM ITMv2 type 0x43 Trace Source - Bus
Nc: ROM 1 E0040000: CID B105900D PID 04000BBD21 CSt type 0x11 Trace Sink - TPIU
Nc: NXP: LPC55S69
Nc: DAP stride is 1024 bytes (256 words)
Nc: Inspected v.2 On chip Flash memory using IAP lib LPC55xx.cfx
Nc: Image 'LPC55xx Dec 8 2025 17:21:59'
Nc: Opening flash driver LPC55xx.cfx
Nc: VECTRESET requested, but not supported on ARMv8-M CPUs. Using SOFTRESET instead.
Nc: Using SOFT reset to run the flash driver
Nc: Flash variant 'LPC55xx (630KB)' detected (630KB = 1260*512 at 0x0)
Nc: Closing flash driver LPC55xx.cfx
Nc: Inspected v.2 On chip Flash memory using IAP lib LPC55xx_S.cfx
Nc: Image 'LPC55xx (Secure) Dec 8 2025 17:21:35'
Nc: Opening flash driver LPC55xx_S.cfx
Nc: VECTRESET requested, but not supported on ARMv8-M CPUs. Using SOFTRESET instead.
Nc: Using SOFT reset to run the flash driver
Nc: Flash variant 'LPC55xx (630KB) (Secure)' detected (630KB = 1260*512 at 0x10000000)
Nc: Closing flash driver LPC55xx_S.cfx
Pc: ( 65) Chip Setup Complete
Pc: ( 70) License Check Complete
Nt: Loading 'tmp60vf72mz.axf' ELF 0x00000000 len 0x19000
Nc: Opening flash driver LPC55xx.cfx
Nc: VECTRESET requested, but not supported on ARMv8-M CPUs. Using SOFTRESET instead.
Nc: Using SOFT reset to run the flash driver
Nc: Flash variant 'LPC55xx (630KB)' detected (630KB = 1260*512 at 0x0)
Pb: 1 of 1 ( 0) Writing sectors 0-199 at 0x00000000 with 102400 bytes
Ps: ( 0) at 00000000: 0 bytes - 0/102400
Ps: ( 97) at 00000000: 99328 bytes - 99328/102400
Wc: op BlankCheck (0x18400, 0x0, 0x6) status 0x1 - driver reported driver error - INTIAP driver rc 105 (0x69)
Ps: (100) at 00018400: 3072 bytes - 102400/102400
Nc: 00019000 done 100% (102400 out of 102400)
Nc: Sectors written: 6, unchanged: 194, total: 200
Nc: Closing flash driver LPC55xx.cfx
Pb: (100) Finished writing Flash successfully.
Nt: Loaded 0x19000 bytes in 538ms (about 190kB/s)
Nt: Loading 'tmp60vf72mz.axf' ELF 0x0001FFD4 len 0x2C
Nc: Opening flash driver LPC55xx.cfx (already resident)
Nc: VECTRESET requested, but not supported on ARMv8-M CPUs. Using SOFTRESET instead.
Nc: Using SOFT reset to run the flash driver
Nc: Flash variant 'LPC55xx (630KB)' detected (630KB = 1260*512 at 0x0)
Pb: 1 of 1 ( 0) Writing sectors 255-255 at 0x0001FFD4 with 44 bytes
Ps: ( 0) at 0001FE00: 0 bytes - 0/512
Ps: (100) at 0001FE00: 512 bytes - 512/512
Nc: Sectors written: 0, unchanged: 1, total: 1
Nc: Closing flash driver LPC55xx.cfx
Pb: (100) Finished writing Flash successfully.
Nt: Loaded 0x2C bytes in 207ms (about 0kB/s)
Nt: Reset target (system)
Nc: Starting execution using system reset with a stall address
Nc: Retask read watchpoint 1 at 0x50000040 to use for boot ROM stall
Nc: Boot ROM stalled accessing address 0x50000040 (restoring watchpoint 1)
Ns: Stopped (Was Reset) [Reset from Unknown]: Watchpoint (Temp) #1 - read watchpoint at 0x50000040 Data watch for bootloader stall
Ns: restart on reset
Applications are built separately from the main project. After building an application execute:
tockloader install