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qmk_firmware/protocol/pjrc/main.c

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/* Keyboard example with debug channel, for Teensy USB Development Board
* http://www.pjrc.com/teensy/usb_keyboard.html
* Copyright (c) 2008 PJRC.COM, LLC
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdbool.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/wdt.h>
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#include <util/delay.h>
#include "keyboard.h"
#include "usb.h"
#include "matrix.h"
#include "print.h"
#include "debug.h"
#include "sendchar.h"
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#include "util.h"
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#include "suspend.h"
#include "host.h"
#include "pjrc.h"
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#define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n))
int main(void)
{
// set for 16 MHz clock
CPU_PRESCALE(0);
// Initialize the USB, and then wait for the host to set configuration.
// If the Teensy is powered without a PC connected to the USB port,
// this will wait forever.
usb_init();
while (!usb_configured()) /* wait */ ;
print_set_sendchar(sendchar);
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keyboard_init();
host_set_driver(pjrc_driver());
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#ifdef SLEEP_LED_ENABLE
sleep_led_init();
#endif
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while (1) {
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while (suspend) {
suspend_power_down();
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if (remote_wakeup && suspend_wakeup_condition()) {
usb_remote_wakeup();
}
}
keyboard_task();
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}
}