├── boards
    └── shields
    │   └── .gitkeep
├── zephyr
    └── module.yml
├── config
    ├── boards
    │   └── shields
    │   │   └── blumicro
    │   │       ├── Kconfig.shield
    │   │       ├── Kconfig.defconfig
    │   │       ├── BluMicro.keymap
    │   │       └── BluMicro.overlay
    └── west.yml
└── .github
    └── workflows
        └── build.yml


/boards/shields/.gitkeep:
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1 | 


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/zephyr/module.yml:
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1 | build:
2 |   settings:
3 |     board_root: .
4 | 


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/config/boards/shields/blumicro/Kconfig.shield:
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1 | config SHIELD_BLUMICRO
2 |   def_bool $(shields_list_contains, BluMicro)
3 | 


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/config/boards/shields/blumicro/Kconfig.defconfig:
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1 | if SHIELD_BLUMICRO
2 | 
3 | config ZMK_KEYBOARD_NAME
4 |   default "BluMicro"
5 | 
6 | endif
7 | 


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/.github/workflows/build.yml:
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1 | on: [push, pull_request, workflow_dispatch]
2 | 
3 | jobs:
4 |   build:
5 |     uses: zmkfirmware/zmk/.github/workflows/build-user-config.yml@main
6 | 


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/config/west.yml:
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 1 | manifest:
 2 |   remotes:
 3 |     - name: zmkfirmware
 4 |       url-base: https://github.com/zmkfirmware
 5 |     # Additional modules containing boards/shields/custom code can be listed here as well
 6 |     # See https://docs.zephyrproject.org/3.2.0/develop/west/manifest.html#projects
 7 |   projects:
 8 |     - name: zmk
 9 |       remote: zmkfirmware
10 |       revision: main
11 |       import: app/west.yml
12 |   self:
13 |     path: config
14 | 


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/config/boards/shields/blumicro/BluMicro.keymap:
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 1 | #include <behaviors.dtsi>
 2 | #include <dt-bindings/zmk/keys.h>
 3 | #include <dt-bindings/zmk/bt.h>
 4 | 
 5 | / {
 6 |     keymap {
 7 |         compatible = "zmk,keymap";
 8 | 
 9 |         default_layer {
10 |             bindings = <
11 |                 &kp KP_N7     &kp KP_N8     &mo 1
12 |                 &kp KP_N4     &kp KP_N5     &kp KP_N6     
13 |                 &kp KP_N1     &kp KP_N2     &kp KP_N3     
14 |             >;
15 |         };
16 | 
17 |         bt_layer {
18 |             bindings = <
19 |                 &none         &none         &bootloader
20 |                 &none         &none         &bt BT_CLR
21 |                 &bt BT_SEL 0  &bt BT_SEL 1  &bt BT_SEL 2
22 |             >;
23 |         };
24 |     };
25 | };
26 | 


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/config/boards/shields/blumicro/BluMicro.overlay:
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 1 | / {
 2 |     chosen {
 3 |         zmk,kscan = &default_kscan;
 4 |     };
 5 | 
 6 |     default_kscan: kscan {
 7 |         compatible = "zmk,kscan-gpio-direct";
 8 |         label = "default_kscan";
 9 | 
10 |         input-gpios = <&pro_micro 1 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>,
11 |                       <&pro_micro 0 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>, 
12 |                       <&pro_micro 2 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>, 
13 |                       <&pro_micro 3 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>, 
14 |                       <&pro_micro 4 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>, 
15 |                       <&pro_micro 5 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>, 
16 |                       <&pro_micro 6 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>, 
17 |                       <&pro_micro 7 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>, 
18 |                       <&pro_micro 8 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>; 
19 |     };
20 | };
21 | 


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