97 lines
2.4 KiB
Markdown
97 lines
2.4 KiB
Markdown
# Custom Userspace Function handlers
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Specifically QMK works by using customized handlers for everything. This allows for multiple levels of customization.
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`matrix_scan` calls `matrix_scan_quantum`, which calls `matrix_scan_kb`, which calls `matrix_scan_user`.
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`process_record` calls a bunch of stuff, but eventually calls `process_record_kb` which calls `process_record_user`
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The same goes for `matrix_init`, `layer_state_set`, `led_set`, and a few other functions.
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All (most) `_user` functions are handled here, in the userspace instead. To allow keyboard specific configuration, I've created `_keymap` functions that can be called by the keymap.c files instead.
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This allows for keyboard specific configuration while maintaining the ability to customize the board.
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My [Ergodox EZ Keymap](https://github.com/qmk/qmk_firmware/blob/master/layouts/community/ergodox/drashna/keymap.c) is a good example of this, as it uses the LEDs as modifier indicators.
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But for a list:
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```c
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__attribute__ ((weak))
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void matrix_init_keymap(void) {}
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void matrix_init_user(void) {
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matrix_init_keymap();
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}
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__attribute__((weak))
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void keyboard_post_init_keymap(void){ }
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void keyboard_post_init_user(void){
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keyboard_post_init_keymap();
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}
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__attribute__ ((weak))
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void matrix_scan_keymap(void) {}
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void matrix_scan_user(void) {
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matrix_scan_keymap();
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}
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__attribute__ ((weak))
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bool process_record_keymap(uint16_t keycode, keyrecord_t *record) {
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return true;
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}
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bool process_record_user(uint16_t keycode, keyrecord_t *record) {
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return process_record_keymap(keycode, record);
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}
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__attribute__ ((weak))
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layer_state_t layer_state_set_keymap (layer_state_t state) {
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return state;
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}
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layer_state_t layer_state_set_user (layer_state_t state) {
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return layer_state_set_keymap (state);
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}
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__attribute__ ((weak))
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void led_set_keymap(uint8_t usb_led) {}
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void led_set_user(uint8_t usb_led) {
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led_set_keymap(usb_led);
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}
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__attribute__ ((weak))
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void suspend_power_down_keymap(void) {}
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void suspend_power_down_user(void) {
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suspend_power_down_keymap();
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}
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__attribute__ ((weak))
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void suspend_wakeup_init_keymap(void) {}
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void suspend_wakeup_init_user(void) {
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suspend_wakeup_init_keymap();
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}
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__attribute__ ((weak))
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void shutdown_keymap(void) {}
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void shutdown_user (void) {
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shutdown_keymap();
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}
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__attribute__ ((weak))
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void eeconfig_init_keymap(void) {}
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void eeconfig_init_user(void) {
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eeconfig_init_keymap();
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}
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```
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