Data driven `g_led_config` (#16728)

2 files changed, 76 insertions, 0 deletions

diff --git a/lib/python/qmk/cli/__init__.py b/lib/python/qmk/cli/__init__.py
index 85baa238a8..d7192631a3 100644
--- a/lib/python/qmk/cli/__init__.py
+++ b/lib/python/qmk/cli/__init__.py
@@ -52,6 +52,7 @@ subcommands = [
     'qmk.cli.generate.dfu_header',
     'qmk.cli.generate.docs',
     'qmk.cli.generate.info_json',
+    'qmk.cli.generate.keyboard_c',
     'qmk.cli.generate.keyboard_h',
     'qmk.cli.generate.layouts',
     'qmk.cli.generate.rgb_breathe_table',
diff --git a/lib/python/qmk/cli/generate/keyboard_c.py b/lib/python/qmk/cli/generate/keyboard_c.py
new file mode 100755
index 0000000000..a9b742f323
--- /dev/null
+++ b/lib/python/qmk/cli/generate/keyboard_c.py
@@ -0,0 +1,75 @@
+"""Used by the make system to generate keyboard.c from info.json.
+"""
+from milc import cli
+
+from qmk.info import info_json
+from qmk.commands import dump_lines
+from qmk.keyboard import keyboard_completer, keyboard_folder
+from qmk.path import normpath
+from qmk.constants import GPL2_HEADER_C_LIKE, GENERATED_HEADER_C_LIKE
+
+
+def _gen_led_config(info_data):
+    """Convert info.json content to g_led_config
+    """
+    cols = info_data['matrix_size']['cols']
+    rows = info_data['matrix_size']['rows']
+
+    config_type = None
+    if 'layout' in info_data.get('rgb_matrix', {}):
+        config_type = 'rgb_matrix'
+    elif 'layout' in info_data.get('led_matrix', {}):
+        config_type = 'led_matrix'
+
+    lines = []
+    if not config_type:
+        return lines
+
+    matrix = [['NO_LED'] * cols for i in range(rows)]
+    pos = []
+    flags = []
+
+    led_config = info_data[config_type]['layout']
+    for index, item in enumerate(led_config, start=0):
+        if 'matrix' in item:
+            (x, y) = item['matrix']
+            matrix[x][y] = str(index)
+        pos.append(f'{{ {item.get("x", 0)},{item.get("y", 0)} }}')
+        flags.append(str(item.get('flags', 0)))
+
+    if config_type == 'rgb_matrix':
+        lines.append('#ifdef RGB_MATRIX_ENABLE')
+        lines.append('#include "rgb_matrix.h"')
+    elif config_type == 'led_matrix':
+        lines.append('#ifdef LED_MATRIX_ENABLE')
+        lines.append('#include "led_matrix.h"')
+
+    lines.append('__attribute__ ((weak)) led_config_t g_led_config = {')
+    lines.append('  {')
+    for line in matrix:
+        lines.append(f'    {{ {",".join(line)} }},')
+    lines.append('  },')
+    lines.append(f'  {{ {",".join(pos)} }},')
+    lines.append(f'  {{ {",".join(flags)} }},')
+    lines.append('};')
+    lines.append('#endif')
+
+    return lines
+
+
+@cli.argument('-o', '--output', arg_only=True, type=normpath, help='File to write to')
+@cli.argument('-q', '--quiet', arg_only=True, action='store_true', help="Quiet mode, only output error messages")
+@cli.argument('-kb', '--keyboard', arg_only=True, type=keyboard_folder, completer=keyboard_completer, required=True, help='Keyboard to generate keyboard.c for.')
+@cli.subcommand('Used by the make system to generate keyboard.c from info.json', hidden=True)
+def generate_keyboard_c(cli):
+    """Generates the keyboard.h file.
+    """
+    kb_info_json = info_json(cli.args.keyboard)
+
+    # Build the layouts.h file.
+    keyboard_h_lines = [GPL2_HEADER_C_LIKE, GENERATED_HEADER_C_LIKE, '#include QMK_KEYBOARD_H', '']
+
+    keyboard_h_lines.extend(_gen_led_config(kb_info_json))
+
+    # Show the results
+    dump_lines(cli.args.output, keyboard_h_lines, cli.args.quiet)