Here is an example of enumerating 2 keycodes. After adding this block to your `keymap.c` you will be able to use `FOO` and `BAR` inside your keymap.
-```
+```c
enum my_keycodes {
FOO = SAFE_RANGE,
BAR
This example does two things. It defines the behavior for a custom keycode called `FOO`, and it supplements our Enter key by playing a tone whenever it is pressed.
-```
+```c
bool process_record_user(uint16_t keycode, keyrecord_t *record) {
switch (keycode) {
case FOO:
The `record` argument contains information about the actual press:
-```
+```c
keyrecord_t record {
-+-keyevent_t event {
-| +-keypos_t key {
-| | +-uint8_t col
-| | +-uint8_t row
-| | }
-| +-bool pressed
-| +-uint16_t time
-| }
+ keyevent_t event {
+ keypos_t key {
+ uint8_t col
+ uint8_t row
+ }
+ bool pressed
+ uint16_t time
+ }
}
```
# LED Control
-This allows you to control the 5 LED's defined as part of the USB Keyboard spec. It will be called when the state of one of those 5 LEDs changes.
+QMK provides methods to read the 5 LEDs defined as part of the HID spec:
* `USB_LED_NUM_LOCK`
* `USB_LED_CAPS_LOCK`
* `USB_LED_COMPOSE`
* `USB_LED_KANA`
+These five constants correspond to the positional bits of the host LED state.
+There are two ways to get the host LED state:
+
+* by implementing `led_set_user()`
+* by calling `host_keyboard_leds()`
+
+## `led_set_user()`
+
+This function will be called when the state of one of those 5 LEDs changes. It receives the LED state as a parameter.
+Use the `IS_LED_ON(usb_led, led_name)` and `IS_LED_OFF(usb_led, led_name)` macros to check the LED status.
+
+!> `host_keyboard_leds()` may already reflect a new value before `led_set_user()` is called.
+
### Example `led_set_user()` Implementation
-```
+```c
void led_set_user(uint8_t usb_led) {
- if (usb_led & (1<<USB_LED_NUM_LOCK)) {
+ if (IS_LED_ON(usb_led, USB_LED_NUM_LOCK)) {
PORTB |= (1<<0);
} else {
PORTB &= ~(1<<0);
}
- if (usb_led & (1<<USB_LED_CAPS_LOCK)) {
+ if (IS_LED_ON(usb_led, USB_LED_CAPS_LOCK)) {
PORTB |= (1<<1);
} else {
PORTB &= ~(1<<1);
}
- if (usb_led & (1<<USB_LED_SCROLL_LOCK)) {
+ if (IS_LED_ON(usb_led, USB_LED_SCROLL_LOCK)) {
PORTB |= (1<<2);
} else {
PORTB &= ~(1<<2);
}
- if (usb_led & (1<<USB_LED_COMPOSE_LOCK)) {
+ if (IS_LED_ON(usb_led, USB_LED_COMPOSE)) {
PORTB |= (1<<3);
} else {
PORTB &= ~(1<<3);
}
- if (usb_led & (1<<USB_LED_KANA_LOCK)) {
+ if (IS_LED_ON(usb_led, USB_LED_KANA)) {
PORTB |= (1<<4);
} else {
PORTB &= ~(1<<4);
* Keyboard/Revision: `void led_set_kb(uint8_t usb_led)`
* Keymap: `void led_set_user(uint8_t usb_led)`
+## `host_keyboard_leds()`
+
+Call this function to get the last received LED state. This is useful for reading the LED state outside `led_set_*`, e.g. in [`matrix_scan_user()`](#matrix-scanning-code).
+For convenience, you can use the `IS_HOST_LED_ON(led_name)` and `IS_HOST_LED_OFF(led_name)` macros instead of calling and checking `host_keyboard_leds()` directly.
+
+## Setting Physical LED State
+
+Some keyboard implementations provide convenience methods for setting the state of the physical LEDs.
+
+### Ergodox Boards
+
+The Ergodox implementations provide `ergodox_right_led_1`/`2`/`3_on`/`off()` to turn individual LEDs on or off, as well as `ergodox_right_led_on`/`off(uint8_t led)` to turn them on or off by their index.
+
+In addition, it is possible to specify the brightness level of all LEDs with `ergodox_led_all_set(uint8_t n)`; of individual LEDs with `ergodox_right_led_1`/`2`/`3_set(uint8_t n)`; or by index with `ergodox_right_led_set(uint8_t led, uint8_t n)`.
+
+Ergodox boards also define `LED_BRIGHTNESS_LO` for the lowest brightness and `LED_BRIGHTNESS_HI` for the highest brightness (which is the default).
# Matrix Initialization Code
-Before a keyboard can be used the hardware must be initialized. QMK handles initialization of the keyboard matrix itself, but if you have other hardware like LED's or i²c controllers you will need to set up that hardware before it can be used.
+Before a keyboard can be used the hardware must be initialized. QMK handles initialization of the keyboard matrix itself, but if you have other hardware like LEDs or i²c controllers you will need to set up that hardware before it can be used.
### Example `matrix_init_user()` Implementation
This example, at the keyboard level, sets up B1, B2, and B3 as LED pins.
-```
+```c
void matrix_init_user(void) {
// Call the keymap level matrix init.
This function gets called at every matrix scan, which is basically as often as the MCU can handle. Be careful what you put here, as it will get run a lot.
-You should use this function if you need custom matrix scanning code. It can also be used for custom status output (such as LED's or a display) or other functionality that you want to trigger regularly even when the user isn't typing.
+You should use this function if you need custom matrix scanning code. It can also be used for custom status output (such as LEDs or a display) or other functionality that you want to trigger regularly even when the user isn't typing.
# Keyboard Idling/Wake Code
-If the board supports it, it can be "idled", by stopping a number of functions. A good example of this is RGB lights or backlights. This can save on power consumption, or may be better behavior for your keyboard.
+If the board supports it, it can be "idled", by stopping a number of functions. A good example of this is RGB lights or backlights. This can save on power consumption, or may be better behavior for your keyboard.
-This is controlled by two functions: `suspend_power_down_*` and `suspend_wakeup_init_*`, which are called when the system is board is idled and when it wakes up, respectively.
+This is controlled by two functions: `suspend_power_down_*` and `suspend_wakeup_init_*`, which are called when the system is board is idled and when it wakes up, respectively.
### Example suspend_power_down_user() and suspend_wakeup_init_user() Implementation
This example, at the keyboard level, sets up B1, B2, and B3 as LED pins.
-```
+```c
void suspend_power_down_user(void)
{
rgb_matrix_set_suspend_state(true);
# Layer Change Code
-This runs code every time that the layers get changed. This can be useful for layer indication, or custom layer handling.
+This runs code every time that the layers get changed. This can be useful for layer indication, or custom layer handling.
### Example `layer_state_set_*` Implementation
This example shows how to set the [RGB Underglow](feature_rgblight.md) lights based on the layer, using the Planck as an example
-```
+```c
uint32_t layer_state_set_user(uint32_t state) {
switch (biton32(state)) {
case _RAISE:
projects / qmk_firmware.git / blobdiff