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feat: per-split-board chip selection and chip-specific config overrides#897

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feat: per-split-board chip selection and chip-specific config overrides#897
drindr wants to merge 1 commit into
HaoboGu:mainfrom
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@drindr

@drindr drindr commented Jun 30, 2026

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  • Add chip option to SplitBoardConfig so split peripherals can use a

    different chip than the top-level keyboard.

  • Resolve [chip.<name>] overrides into Hardware.chip_configs.

  • Thread explicit ChipModel/ChipConfig through chip_init, flash_init,

    watchdog, and split peripheral code generation.

@drindr
feat: per-split-board chip selection and chip-specific config overrides
044b39a 
- Add `chip` option to `SplitBoardConfig` so split peripherals can use a

  different chip than the top-level keyboard.

- Resolve `[chip.<name>]` overrides into `Hardware.chip_configs`.

- Thread explicit `ChipModel`/`ChipConfig` through chip_init, flash_init,

  watchdog, and split peripheral code generation.
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Size Report

Example main PR Diff .text .data .bss
use_config/nrf52832_ble 373.8 KiB 373.8 KiB +0.00% 0 0 0
use_config/nrf52840_ble 422.8 KiB 422.8 KiB +0.00% ⬆️ +8 0 0
use_config/nrf52840_ble_split (central) 498.5 KiB 498.5 KiB +0.00% ⬆️ +4 0 0
use_config/nrf52840_ble_split (peripheral) 323.0 KiB 323.0 KiB +0.00% ⬆️ +4 0 0
use_config/pi_pico_w_ble 660.3 KiB 660.3 KiB +0.00% ⬆️ +4 0 0
use_config/rp2040 148.5 KiB 148.5 KiB +0.00% 0 0 0
use_config/rp2040_split (central) 162.1 KiB 162.1 KiB +0.00% ⬇️ -12 0 0
use_config/rp2040_split (peripheral) 27.8 KiB 27.8 KiB +0.00% 0 0 0
use_config/stm32f1 63.0 KiB 63.0 KiB +0.00% 0 0 0
use_config/stm32h7 100.0 KiB 100.0 KiB +0.00% ⬆️ +4 0 0
use_rust/nrf52832_ble 361.3 KiB 361.3 KiB +0.00% ⬆️ +8 0 0
use_rust/nrf52840_ble 418.7 KiB 418.7 KiB +0.00% ⬆️ +4 0 0
use_rust/nrf52840_ble_split (central) 507.4 KiB 507.4 KiB +0.00% ⬇️ -8 0 0
use_rust/nrf52840_ble_split (peripheral) 319.7 KiB 319.7 KiB +0.00% ⬆️ +4 0 0
use_rust/pi_pico_w_ble 660.8 KiB 660.8 KiB +0.00% 0 0 0
use_rust/rp2040 148.0 KiB 148.0 KiB +0.00% ⬇️ -8 0 0
use_rust/rp2040_split (central) 160.8 KiB 160.8 KiB +0.00% 0 0 0
use_rust/rp2040_split (peripheral) 28.1 KiB 28.1 KiB +0.01% ⬆️ +4 0 0
use_rust/stm32f1 62.9 KiB 62.9 KiB +0.00% ⬆️ +4 0 0
use_rust/stm32h7 122.3 KiB 122.3 KiB +0.00% 0 0 0
use_config/nrf52832_ble — 373.8 KiB → 373.8 KiB (+0.00%)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
 342892	   5256	  34616	 382764	  5d72c	rmk-nrf52832

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
 342892	   5256	  34616	 382764	  5d72c	rmk-nrf52832

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0%    +464  [ = ]       0    .debug_info
  +0.0%    +247  [ = ]       0    .debug_str
  +0.3%     +26  [ = ]       0    .debug_abbrev
  +0.0%     +19  [ = ]       0    .debug_line
  +0.0%    +756  [ = ]       0    TOTAL
use_config/nrf52840_ble — 422.8 KiB → 422.8 KiB (+0.00% ⬆️)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
 376400	   5264	  51264	 432928	  69b20	rmk-nrf52840

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
 376392	   5264	  51264	 432920	  69b18	rmk-nrf52840

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0%    +151  [ = ]       0    .debug_info
  +0.0%     +22  [ = ]       0    .debug_str
  +0.0%      +8  +0.0%      +8    .text
 -18.3%     -11  [ = ]       0    [Unmapped]
  -0.0%     -74  [ = ]       0    .debug_line
  +0.0%     +96  +0.0%      +8    TOTAL
use_config/nrf52840_ble_split (central) — 498.5 KiB → 498.5 KiB (+0.00% ⬆️)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
 456800	   6588	  47080	 510468	  7ca04	central

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
 456796	   6588	  47080	 510464	  7ca00	central

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0%    +505  [ = ]       0    .debug_info
  +0.0%     +75  [ = ]       0    .debug_line
  +0.0%     +32  [ = ]       0    .debug_loc
  +0.2%     +15  [ = ]       0    .debug_abbrev
  +0.0%      +4  +0.0%      +4    .text
  -1.8%      -1  [ = ]       0    [Unmapped]
  -0.0%    -182  [ = ]       0    .debug_str
  +0.0%    +448  +0.0%      +4    TOTAL
use_config/nrf52840_ble_split (peripheral) — 323.0 KiB → 323.0 KiB (+0.00% ⬆️)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
 297236	   5920	  27592	 330748	  50bfc	peripheral

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
 297232	   5920	  27592	 330744	  50bf8	peripheral

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0%    +672  [ = ]       0    .debug_info
  +0.0%     +98  [ = ]       0    .debug_line
  +0.0%     +20  [ = ]       0    .debug_str
  +0.0%      +4  +0.0%      +4    .text
  -3.1%      -2  [ = ]       0    [Unmapped]
  +0.0%    +792  +0.0%      +4    TOTAL
use_config/pi_pico_w_ble — 660.3 KiB → 660.3 KiB (+0.00% ⬆️)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
 620500	      0	  55652	 676152	  a5138	rmk-pi-pico-w

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
 620496	      0	  55652	 676148	  a5134	rmk-pi-pico-w

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0%    +785  [ = ]       0    .debug_str
  +0.0%    +323  [ = ]       0    .debug_info
  +0.0%     +14  [ = ]       0    .debug_line
  +0.0%      +4  +0.0%      +4    .text
  +0.0%      +1  [ = ]       0    .strtab
  -7.7%      -5  [ = ]       0    [Unmapped]
  -0.0%     -10  [ = ]       0    .debug_loc
  -0.2%     -20  [ = ]       0    .debug_abbrev
  +0.0% +1.07Ki  +0.0%      +4    TOTAL
use_config/rp2040 — 148.5 KiB → 148.5 KiB (+0.00%)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
 136524	      0	  15540	 152064	  25200	rmk-rp2040

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
 136524	      0	  15540	 152064	  25200	rmk-rp2040

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0%     +40  [ = ]       0    .debug_str
  -2.8%      -1  [ = ]       0    [Unmapped]
  -0.0%     -28  [ = ]       0    .debug_line
  -0.0%     -42  [ = ]       0    .debug_loc
  -0.0%     -57  [ = ]       0    .debug_info
  -0.0%     -88  [ = ]       0    TOTAL
use_config/rp2040_split (central) — 162.1 KiB → 162.1 KiB (+0.00% ⬇️)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
 149568	      0	  16388	 165956	  28844	central

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
 149580	      0	  16388	 165968	  28850	central

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.1% +1.01Ki  [ = ]       0    .debug_str
  +0.0%    +271  [ = ]       0    .debug_info
  +0.0%     +32  [ = ]       0    .debug_loc
   +36%     +14  [ = ]       0    [Unmapped]
  -0.0%     -12  -0.0%     -12    .text
  -0.1%    -120  [ = ]       0    .debug_line
  +0.0% +1.19Ki  -0.0%     -12    TOTAL
use_config/rp2040_split (peripheral) — 27.8 KiB → 27.8 KiB (+0.00%)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
  25596	     60	   2796	  28452	   6f24	peripheral

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
  25596	     60	   2796	  28452	   6f24	peripheral

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  [ = ]       0  [ = ]       0    TOTAL
use_config/stm32f1 — 63.0 KiB → 63.0 KiB (+0.00%)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
  56956	     28	   7520	  64504	   fbf8	rmk-stm32f1

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
  56956	     28	   7520	  64504	   fbf8	rmk-stm32f1

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0%    +177  [ = ]       0    .debug_str
  +0.0%     +16  [ = ]       0    .debug_line
  -1.8%      -1  [ = ]       0    [Unmapped]
  +0.0%    +192  [ = ]       0    TOTAL
use_config/stm32h7 — 100.0 KiB → 100.0 KiB (+0.00% ⬆️)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
  92404	    268	   9760	 102432	  19020	rmk-stm32h7

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
  92400	    268	   9760	 102428	  1901c	rmk-stm32h7

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0%     +15  [ = ]       0    .debug_str
  +0.0%      +4  +0.0%      +4    .text
 -11.1%      -6  [ = ]       0    [Unmapped]
  -0.0%    -121  [ = ]       0    .debug_info
  -0.1%    -144  [ = ]       0    .debug_line
  -0.0%    -252  +0.0%      +4    TOTAL
use_rust/nrf52832_ble — 361.3 KiB → 361.3 KiB (+0.00% ⬆️)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
 331156	   5256	  33600	 370012	  5a55c	rmk-nrf52832

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
 331148	   5256	  33600	 370004	  5a554	rmk-nrf52832

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0%    +803  [ = ]       0    .debug_str
  +0.0%     +43  [ = ]       0    .debug_info
  +0.0%      +8  +0.0%      +8    .text
 -13.3%      -8  [ = ]       0    [Unmapped]
  -0.4%     -35  [ = ]       0    .debug_abbrev
  -0.0%    -111  [ = ]       0    .debug_line
  +0.0%    +700  +0.0%      +8    TOTAL
use_rust/nrf52840_ble — 418.7 KiB → 418.7 KiB (+0.00% ⬆️)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
 376748	   5264	  46752	 428764	  68adc	rmk-nrf52840

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
 376744	   5264	  46752	 428760	  68ad8	rmk-nrf52840

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0%    +912  [ = ]       0    .debug_str
  +0.0%     +32  [ = ]       0    .debug_ranges
  +0.0%     +32  [ = ]       0    .symtab
  +0.0%     +26  [ = ]       0    .strtab
  +0.0%     +20  [ = ]       0    .debug_frame
  +0.0%      +8  [ = ]       0    .debug_aranges
  +0.0%      +4  +0.0%      +4    .text
  -8.8%      -5  [ = ]       0    [Unmapped]
  -0.2%     -15  [ = ]       0    .debug_abbrev
  -0.1%    -335  [ = ]       0    .debug_line
  -0.1% -1.03Ki  [ = ]       0    .debug_loc
  -0.1% -2.58Ki  [ = ]       0    .debug_info
  -0.0% -2.95Ki  +0.0%      +4    TOTAL
use_rust/nrf52840_ble_split (central) — 507.4 KiB → 507.4 KiB (+0.00% ⬇️)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
 460140	   6588	  52824	 519552	  7ed80	central

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
 460148	   6588	  52824	 519560	  7ed88	central

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0%    +295  [ = ]       0    .debug_info
  +0.0%    +111  [ = ]       0    .debug_line
  +0.0%     +32  [ = ]       0    .debug_loc
   +16%     +10  [ = ]       0    [Unmapped]
  -0.0%      -8  -0.0%      -8    .text
  -0.0%     -32  [ = ]       0    .debug_str
  +0.0%    +408  -0.0%      -8    TOTAL
use_rust/nrf52840_ble_split (peripheral) — 319.7 KiB → 319.7 KiB (+0.00% ⬆️)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
 295624	   5360	  26360	 327344	  4feb0	peripheral

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
 295620	   5360	  26360	 327340	  4feac	peripheral

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0%     +21  [ = ]       0    .debug_line
  +0.0%      +4  +0.0%      +4    .text
 -12.5%      -8  [ = ]       0    [Unmapped]
  -0.0%     -32  [ = ]       0    .debug_loc
  -0.0%    -169  [ = ]       0    .debug_info
  -0.0% -1.02Ki  [ = ]       0    .debug_str
  -0.0% -1.20Ki  +0.0%      +4    TOTAL
use_rust/pi_pico_w_ble — 660.8 KiB → 660.8 KiB (+0.00%)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
 620872	      0	  55796	 676668	  a533c	rmk-pi-pico-w

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
 620872	      0	  55796	 676668	  a533c	rmk-pi-pico-w

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0%    +176  [ = ]       0    .debug_str
  +0.0%    +102  [ = ]       0    .debug_line
  +0.0%     +15  [ = ]       0    .debug_info
   +14%      +5  [ = ]       0    [Unmapped]
  -0.0%      -2  [ = ]       0    .debug_loc
  -0.2%     -24  [ = ]       0    .debug_abbrev
  +0.0%    +272  [ = ]       0    TOTAL
use_rust/rp2040 — 148.0 KiB → 148.0 KiB (+0.00% ⬇️)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
 136180	      0	  15412	 151592	  25028	rmk-rp2040

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
 136188	      0	  15412	 151600	  25030	rmk-rp2040

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0%    +596  [ = ]       0    .debug_str
  +0.1%    +558  [ = ]       0    .debug_info
  +7.3%      +4  [ = ]       0    [Unmapped]
  -0.0%      -8  -0.0%      -8    .text
  -0.1%    -150  [ = ]       0    .debug_line
  +0.0%   +1000  -0.0%      -8    TOTAL
use_rust/rp2040_split (central) — 160.8 KiB → 160.8 KiB (+0.00%)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
 148452	      0	  16172	 164624	  28310	central

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
 148452	      0	  16172	 164624	  28310	central

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0%    +612  [ = ]       0    .debug_str
  +0.0%    +335  [ = ]       0    .debug_info
  +0.0%      +4  [ = ]       0    .debug_line
  +2.2%      +1  [ = ]       0    [Unmapped]
  +0.0%    +952  [ = ]       0    TOTAL
use_rust/rp2040_split (peripheral) — 28.1 KiB → 28.1 KiB (+0.01% ⬆️)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
  25656	     60	   3060	  28776	   7068	peripheral

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
  25652	     60	   3060	  28772	   7064	peripheral

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.1%      +4  +0.1%      +4    .rodata
  -1.6%      -1  [ = ]       0    [Unmapped]
  -0.0%      -3  [ = ]       0    .debug_str
  [ = ]       0  +0.0%      +4    TOTAL
use_rust/stm32f1 — 62.9 KiB → 62.9 KiB (+0.00% ⬆️)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
  56896	     28	   7496	  64420	   fba4	rmk-stm32f1

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
  56892	     28	   7496	  64416	   fba0	rmk-stm32f1

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0%    +300  [ = ]       0    .debug_str
  +0.0%    +135  [ = ]       0    .debug_info
  +0.0%      +4  +0.0%      +4    .text
  -5.2%      -3  [ = ]       0    [Unmapped]
  +0.0%    +436  +0.0%      +4    TOTAL
use_rust/stm32h7 — 122.3 KiB → 122.3 KiB (+0.00%)

cargo size (PR):

   text	   data	    bss	    dec	    hex	filename
 109188	    324	  15692	 125204	  1e914	rmk-stm32h7

cargo size (main):

   text	   data	    bss	    dec	    hex	filename
 109188	    324	  15692	 125204	  1e914	rmk-stm32h7

Bloaty diff (PR vs main):

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0%    +110  [ = ]       0    .debug_str
  +0.0%     +27  [ = ]       0    .debug_line
  +0.0%      +9  [ = ]       0    .debug_info
  -0.0%     -10  [ = ]       0    .debug_loc
  +0.0%    +136  [ = ]       0    TOTAL

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@drindr