arch/lpc214x: Fix LPC214x to work again

[acassis]

Summary

This fix is based on the same fix for LPC2378, however it wasn't tested on real hardware because I don't have a LPC214x board.

Impact

LPC214x will work again.

Testing

Only tested on LPC2378 board.

[github-actions]

MemBrowse Memory Report

No memory changes detected for:

• arduino-mega2560
• esp32-devkitc
• hifive1-revb
• mirtoo
• qemu-armv8a
• qemu-intel64
• rx65n-rsk2mb
• s698pm-dkit
• stm32-nucleo-f103rb

[xiaoxiang781216]

ci error is fixed by apache/nuttx-apps#3568

[simbit18]

Hi @acassis , The PR apache/nuttx-apps#3568 has been merged. Please rebase.

Update
Since the fix affects the nuttx-apps repository, I had all the jobs run (Re-run all jobs)

[simbit18]

Hi @acassis This error occurs

====================================================================================
Configuration/Tool: zp214xpa/nsh,CONFIG_ARM_TOOLCHAIN_GNU_EABI
2026-06-29 07:23:28
------------------------------------------------------------------------------------
  Cleaning...
  Configuring...
  Disabling CONFIG_ARM_TOOLCHAIN_GNU_EABI
  Enabling CONFIG_ARM_TOOLCHAIN_GNU_EABI
  Building NuttX...
In file included from chip/lpc214x_decodeirq.c:36:
chip/lpc214x_decodeirq.c: In function 'arm_decodeirq':
Error: chip/lpc214x_decodeirq.c:152:33: error: 'VIC_IRQSTATUS_OFFSET' undeclared (first use in this function); did you mean 'LPC214X_VIC_IRQSTATUS_OFFSET'?
  152 |   uint32_t irqbits = vic_getreg(VIC_IRQSTATUS_OFFSET) & 0xffffffff;
      |                                 ^~~~~~~~~~~~~~~~~~~~
/github/workspace/sources/nuttx/arch/arm/src/common/arm_internal.h:130:48: note: in definition of macro 'getreg32'
  130 | #define getreg32(a)    (*(volatile uint32_t *)(a))
      |                                                ^
chip/lpc214x_decodeirq.c:152:22: note: in expansion of macro 'vic_getreg'
  152 |   uint32_t irqbits = vic_getreg(VIC_IRQSTATUS_OFFSET) & 0xffffffff;
      |                      ^~~~~~~~~~
chip/lpc214x_decodeirq.c:152:33: note: each undeclared identifier is reported only once for each function it appears in
  152 |   uint32_t irqbits = vic_getreg(VIC_IRQSTATUS_OFFSET) & 0xffffffff;
      |                                 ^~~~~~~~~~~~~~~~~~~~
/github/workspace/sources/nuttx/arch/arm/src/common/arm_internal.h:130:48: note: in definition of macro 'getreg32'
  130 | #define getreg32(a)    (*(volatile uint32_t *)(a))
      |                                                ^
chip/lpc214x_decodeirq.c:152:22: note: in expansion of macro 'vic_getreg'
  152 |   uint32_t irqbits = vic_getreg(VIC_IRQSTATUS_OFFSET) & 0xffffffff;
      |                      ^~~~~~~~~~
chip/lpc214x_decodeirq.c: At top level:
Error: chip/lpc214x_decodeirq.c:81:18: error: 'lpc214x_decodeirq' defined but not used [-Werror=unused-function]
   81 | static uint32_t *lpc214x_decodeirq(uint32_t *regs)
      |                  ^~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[1]: *** [Makefile:179: lpc214x_decodeirq.o] Error 1
make[1]: Target 'libarch.a' not remade because of errors.
make: *** [tools/LibTargets.mk:170: arch/arm/src/libarch.a] Error 2
make: Target 'all' not remade because of errors.
/github/workspace/sources/nuttx/tools/testbuild.sh: line 397: /github/workspace/sources/nuttx/../nuttx/nuttx.manifest: No such file or directory
  [1/1] Normalize zp214xpa/nsh
/github/workspace/sources/nuttx /github/workspace/sources/nuttx
HEAD detached at pull/19234/merge
nothing to commit, working tree clean
/github/workspace/sources/nuttx
/github/workspace/sources/apps /github/workspace/sources/nuttx
On branch master
Your branch is up to date with 'origin/master'.

nothing to commit, working tree clean
/github/workspace/sources/nuttx
Wait 4 seconds (60 backoff)
Build Attempt 2 of 4
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