-
-uint8_t get_first_key(void)
-{
-#ifdef NKRO_ENABLE
- if (keyboard_protocol && keyboard_nkro) {
- uint8_t i = 0;
- for (; i < KEYBOARD_REPORT_BITS && !keyboard_report->nkro.bits[i]; i++)
- ;
- return i<<3 | biton(keyboard_report->nkro.bits[i]);
- }
-#endif
-#ifdef USB_6KRO_ENABLE
- uint8_t i = cb_head;
- do {
- if (keyboard_report->keys[i] != 0) {
- break;
- }
- i = RO_INC(i);
- } while (i != cb_tail);
- return keyboard_report->keys[i];
-#else
- return keyboard_report->keys[0];
-#endif
-}
-
-
-
-/* local functions */
-static inline void add_key_byte(uint8_t code)
-{
-#ifdef USB_6KRO_ENABLE
- int8_t i = cb_head;
- int8_t empty = -1;
- if (cb_count) {
- do {
- if (keyboard_report->keys[i] == code) {
- return;
- }
- if (empty == -1 && keyboard_report->keys[i] == 0) {
- empty = i;
- }
- i = RO_INC(i);
- } while (i != cb_tail);
- if (i == cb_tail) {
- if (cb_tail == cb_head) {
- // buffer is full
- if (empty == -1) {
- // pop head when has no empty space
- cb_head = RO_INC(cb_head);
- cb_count--;
- }
- else {
- // left shift when has empty space
- uint8_t offset = 1;
- i = RO_INC(empty);
- do {
- if (keyboard_report->keys[i] != 0) {
- keyboard_report->keys[empty] = keyboard_report->keys[i];
- keyboard_report->keys[i] = 0;
- empty = RO_INC(empty);
- }
- else {
- offset++;
- }
- i = RO_INC(i);
- } while (i != cb_tail);
- cb_tail = RO_SUB(cb_tail, offset);
- }
- }
- }
- }
- // add to tail
- keyboard_report->keys[cb_tail] = code;
- cb_tail = RO_INC(cb_tail);
- cb_count++;
-#else
- int8_t i = 0;
- int8_t empty = -1;
- for (; i < KEYBOARD_REPORT_KEYS; i++) {
- if (keyboard_report->keys[i] == code) {
- break;
- }
- if (empty == -1 && keyboard_report->keys[i] == 0) {
- empty = i;
- }
- }
- if (i == KEYBOARD_REPORT_KEYS) {
- if (empty != -1) {
- keyboard_report->keys[empty] = code;
- }
- }
-#endif
-}
-
-static inline void del_key_byte(uint8_t code)
-{
-#ifdef USB_6KRO_ENABLE
- uint8_t i = cb_head;
- if (cb_count) {
- do {
- if (keyboard_report->keys[i] == code) {
- keyboard_report->keys[i] = 0;
- cb_count--;
- if (cb_count == 0) {
- // reset head and tail
- cb_tail = cb_head = 0;
- }
- if (i == RO_DEC(cb_tail)) {
- // left shift when next to tail
- do {
- cb_tail = RO_DEC(cb_tail);
- if (keyboard_report->keys[RO_DEC(cb_tail)] != 0) {
- break;
- }
- } while (cb_tail != cb_head);
- }
- break;
- }
- i = RO_INC(i);
- } while (i != cb_tail);
- }
-#else
- for (uint8_t i = 0; i < KEYBOARD_REPORT_KEYS; i++) {
- if (keyboard_report->keys[i] == code) {
- keyboard_report->keys[i] = 0;
- }
- }
-#endif
-}
-
-#ifdef NKRO_ENABLE
-static inline void add_key_bit(uint8_t code)
-{
- if ((code>>3) < KEYBOARD_REPORT_BITS) {
- keyboard_report->nkro.bits[code>>3] |= 1<<(code&7);
- } else {
- dprintf("add_key_bit: can't add: %02X\n", code);
- }
-}
-
-static inline void del_key_bit(uint8_t code)
-{
- if ((code>>3) < KEYBOARD_REPORT_BITS) {
- keyboard_report->nkro.bits[code>>3] &= ~(1<<(code&7));
- } else {
- dprintf("del_key_bit: can't del: %02X\n", code);
- }
-}
-#endif