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/* Copyright 2021
*
* 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 "rn42.h"
#include "report.h"
#include "uart.h"
#ifndef RN42_BAUD_RATE
# define RN42_BAUD_RATE 115200
#endif
// https://cdn.sparkfun.com/datasheets/Wireless/Bluetooth/bluetooth_cr_UG-v1.0r.pdf#G7.663734
static inline uint16_t rn42_consumer_usage_to_bitmap(uint16_t usage) {
switch (usage) {
case AC_HOME:
return 0x0001;
case AL_EMAIL:
return 0x0002;
case AC_SEARCH:
return 0x0004;
case AL_KEYBOARD_LAYOUT:
return 0x0008;
case AUDIO_VOL_UP:
return 0x0010;
case AUDIO_VOL_DOWN:
return 0x0020;
case AUDIO_MUTE:
return 0x0040;
case TRANSPORT_PLAY_PAUSE:
return 0x0080;
case TRANSPORT_NEXT_TRACK:
return 0x0100;
case TRANSPORT_PREV_TRACK:
return 0x0200;
case TRANSPORT_STOP:
return 0x0400;
case TRANSPORT_EJECT:
return 0x0800;
case TRANSPORT_FAST_FORWARD:
return 0x1000;
case TRANSPORT_REWIND:
return 0x2000;
case TRANSPORT_STOP_EJECT:
return 0x4000;
case AL_LOCAL_BROWSER:
return 0x8000;
default:
return 0;
}
}
void rn42_init(void) {
uart_init(RN42_BAUD_RATE);
}
void rn42_send_keyboard(report_keyboard_t *report) {
uart_write(0xFD);
uart_write(0x09);
uart_write(0x01);
uart_write(report->mods);
uart_write(0x00);
uart_write(report->keys[0]);
uart_write(report->keys[1]);
uart_write(report->keys[2]);
uart_write(report->keys[3]);
uart_write(report->keys[4]);
uart_write(report->keys[5]);
}
void rn42_send_mouse(report_mouse_t *report) {
uart_write(0xFD);
uart_write(0x05);
uart_write(0x02);
uart_write(report->buttons);
uart_write(report->x);
uart_write(report->y);
uart_write(report->v);
}
void rn42_send_consumer(uint16_t usage) {
uint16_t bitmap = rn42_consumer_usage_to_bitmap(usage);
uart_write(0xFD);
uart_write(0x03);
uart_write(0x03);
uart_write(bitmap & 0xFF);
uart_write(bitmap >> 8);
}
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