diff options
Diffstat (limited to 'host.c')
| -rw-r--r-- | host.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/host.c b/host.c new file mode 100644 index 0000000000..65b5ddcbb3 --- /dev/null +++ b/host.c @@ -0,0 +1,190 @@ +/* +Copyright 2011 Jun Wako <wakojun@gmail.com> + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation, either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include <stdint.h> +#include <avr/interrupt.h> +#include "usb_keycodes.h" +#include "host.h" +#include "util.h" +#include "debug.h" + + +#ifdef NKRO_ENABLE +bool keyboard_nkro = false; +#endif + +static host_driver_t *driver; +static report_keyboard_t report0; +static report_keyboard_t report1; +report_keyboard_t *keyboard_report = &report0; +report_keyboard_t *keyboard_report_prev = &report1; + + +static inline void add_key_byte(uint8_t code); +static inline void add_key_bit(uint8_t code); + + +void host_set_driver(host_driver_t *d) +{ + driver = d; +} + +host_driver_t *host_get_driver(void) +{ + return driver; +} + +uint8_t host_keyboard_leds(void) +{ + if (!driver) return 0; + return (*driver->keyboard_leds)(); +} + +/* keyboard report operations */ +void host_add_key(uint8_t key) +{ +#ifdef NKRO_ENABLE + if (keyboard_nkro) { + add_key_bit(key); + return; + } +#endif + add_key_byte(key); +} + +void host_add_mod_bit(uint8_t mod) +{ + keyboard_report->mods |= mod; +} + +void host_set_mods(uint8_t mods) +{ + keyboard_report->mods = mods; +} + +void host_add_code(uint8_t code) +{ + if (IS_MOD(code)) { + host_add_mod_bit(MOD_BIT(code)); + } else { + host_add_key(code); + } +} + +void host_swap_keyboard_report(void) +{ + uint8_t sreg = SREG; + cli(); + report_keyboard_t *tmp = keyboard_report_prev; + keyboard_report_prev = keyboard_report; + keyboard_report = tmp; + SREG = sreg; +} + +void host_clear_keyboard_report(void) +{ + keyboard_report->mods = 0; + for (int8_t i = 0; i < REPORT_KEYS; i++) { + keyboard_report->keys[i] = 0; + } +} + +uint8_t host_has_anykey(void) +{ + uint8_t cnt = 0; + for (int i = 0; i < REPORT_KEYS; i++) { + if (keyboard_report->keys[i]) + cnt++; + } + return cnt; +} + +uint8_t host_get_first_key(void) +{ +#ifdef NKRO_ENABLE + if (keyboard_nkro) { + uint8_t i = 0; + for (; i < REPORT_KEYS && !keyboard_report->keys[i]; i++) + ; + return i<<3 | biton(keyboard_report->keys[i]); + } +#endif + return keyboard_report->keys[0]; +} + + +void host_send_keyboard_report(void) +{ + if (!driver) return; + (*driver->send_keyboard)(keyboard_report); +} + +void host_mouse_send(report_mouse_t *report) +{ + if (!driver) return; + (*driver->send_mouse)(report); +} + +void host_system_send(uint16_t data) +{ + if (!driver) return; + (*driver->send_consumer)(data); +} + +void host_consumer_send(uint16_t data) +{ + // TODO: this is needed? + static uint16_t last_data = 0; + if (data == last_data) return; + last_data = data; + + if (!driver) return; + (*driver->send_consumer)(data); +} + + +static inline void add_key_byte(uint8_t code) +{ + // TODO: fix ugly code + int8_t i = 0; + int8_t empty = -1; + for (; i < REPORT_KEYS; i++) { + if (keyboard_report_prev->keys[i] == code) { + keyboard_report->keys[i] = code; + break; + } + if (empty == -1 && + keyboard_report_prev->keys[i] == 0 && + keyboard_report->keys[i] == 0) { + empty = i; + } + } + if (i == REPORT_KEYS) { + if (empty != -1) { + keyboard_report->keys[empty] = code; + } + } +} + +static inline void add_key_bit(uint8_t code) +{ + if ((code>>3) < REPORT_KEYS) { + keyboard_report->keys[code>>3] |= 1<<(code&7); + } else { + debug("add_key_bit: can't add: "); phex(code); debug("\n"); + } +} |