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- #include "Code_LEDLock.h"
-
- /* USB_LED_bit are codes from http://www.usb.org/developers/hidpage/HID1_11.pdf keyboard output report
- */
- Code_LEDLock::Code_LEDLock(const uint16_t scancode, LED& refLED)
- : scancode(scancode), refLED(refLED)
- {
- switch (scancode) //initilize USB_LED_bit for given scancode
- {
- case KEY_NUM_LOCK:
- USB_LED_bit = 1<<0;
- break;
- case KEY_CAPS_LOCK:
- USB_LED_bit = 1<<1;
- break;
- case KEY_SCROLL_LOCK:
- USB_LED_bit = 1<<2;
- break;
- /* guessing at these case names:
- case KEY_COMPOSE: //for separate accent keys
- USB_LED_bit = 1<<3; break;
- break;
- case KEY_KANA: //for Japanese keyboards
- USB_LED_bit = 1<<4; break;
- break;
- */
- }
- }
-
- void Code_LEDLock::press()
- {
- Keyboard.press(scancode);
- updateLED();
- }
-
- void Code_LEDLock::release()
- {
- Keyboard.release(scancode);
- }
-
- /* updateLED() is a separate function from press() because Arduino boards may need a different implementation.
- updateLED() has been tested on teensy 2.0.
- The variable "keyboard_leds" is in /opt/arduino-1.6.7/hardware/teensy/avr/cores/usb_hid/usb.c
- // 1=num lock, 2=caps lock, 4=scroll lock, 8=compose, 16=kana
- https://forum.pjrc.com/threads/25368-How-do-I-receive-a-numlock-capslock-LED-signal-from-the-PC
- updateLED() has NOT been tested on an Arduino board.
- The word "keyboard_leds does not appear in "Arduino\hardware\arduino\cores\
- This shows how to hack KeyReport in Arduino: https://www.sparkfun.com/tutorials/337
- TMK firmware uses variable "usb_led" instead of "keyboard_leds"
- http://deskthority.net/workshop-f7/how-to-build-your-very-own-keyboard-firmware-t7177.html >usb_led
- */
- void Code_LEDLock::updateLED() const
- {
- /* KEY_SCROLL_LOCK is not working on Teensy2.0, it prints keyboard_leds=0, maybe Linux doesn't have it.
- Here is the debug code:
- Keyboard.print(F(" keyboard_leds="));
- Keyboard.print(keyboard_leds);//KEY_NUM_LOCK:1, KEY_CAPS_LOCK:2, KEY_SCROLL_LOCK:0
- Keyboard.print(" ");
- */
- if (keyboard_leds & USB_LED_bit) //if LED status bit is set
- {
- refLED.off(); //LED on/off seem inverted, but it works
- }
- else
- {
- refLED.on();
- }
- }
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