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/* 2010/08/23 noname
* keyboard firmware based on PJRC USB keyboard example
*/
/* 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 <avr/io.h>
#include <avr/pgmspace.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include "usb_keyboard_debug.h"
#include "print.h"
#include "matrix.h"
#include "keymap.h"
#define LED_CONFIG (DDRD |= (1<<6))
#define LED_ON (PORTD &= ~(1<<6))
#define LED_OFF (PORTD |= (1<<6))
#define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n))
uint16_t idle_count=0;
int main(void)
{
uint8_t modified = 0;
uint8_t key_index = 0;
// set for 16 MHz clock
CPU_PRESCALE(0);
matrix_init();
// 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 */ ;
// Wait an extra second for the PC's operating system to load drivers
// and do whatever it does to actually be ready for input
_delay_ms(1000);
// Configure timer 0 to generate a timer overflow interrupt every
// 256*1024 clock cycles, or approx 61 Hz when using 16 MHz clock
// This demonstrates how to use interrupts to implement a simple
// inactivity timeout.
TCCR0A = 0x00;
TCCR0B = 0x05;
TIMSK0 = (1<<TOIE0);
print("keyboard firmware 0.1 for t.m.k.\n");
while (1) {
uint8_t row, col, code;
modified = 0;
matrix_scan();
keyboard_modifier_keys = 0;
for (int i = 0; i < 6; i++)
keyboard_keys[i] = KB_NO;
key_index = 0;
for (row = 0; row < MATRIX_ROWS; row++) {
if (matrix[row] != prev_matrix[row]) {
modified = 1;
}
for (col = 0; col < MATRIX_COLS; col++) {
if (matrix[row] & 1<<col) continue;
code = get_keycode(row, col);
// Modifier keycode: 0xE0-0xE7
if (KB_LCTRL <= code && code <= KB_RGUI) {
keyboard_modifier_keys |= 1<<(code&0x07);
} else {
if (key_index < 6) {
keyboard_keys[key_index] = code;
}
key_index++;
}
}
}
if (key_index > 6) {
//Rollover
}
// if any keypresses were detected, reset the idle counter
if (modified) {
print(" 01234567\n");
for (row = 0; row < MATRIX_ROWS; row++) {
phex(row); print(": "); pbin_reverse(matrix[row]); print("\n");
}
print("keys: ");
for (int i = 0; i < 6; i++) { phex(keyboard_keys[i]); print(" "); }
print("\n");
print("mod: "); phex(keyboard_modifier_keys); print("\n");
usb_keyboard_send();
// variables shared with interrupt routines must be
// accessed carefully so the interrupt routine doesn't
// try to use the variable in the middle of our access
cli();
idle_count = 0;
sei();
}
// now the current pins will be the previous, and
// wait a short delay so we're not highly sensitive
// to mechanical "bounce".
_delay_ms(2);
}
}
// This interrupt routine is run approx 61 times per second.
// A very simple inactivity timeout is implemented, where we
// will send a space character and print a message to the
// hid_listen debug message window.
ISR(TIMER0_OVF_vect)
{
idle_count++;
if (idle_count > 61 * 8) {
idle_count = 0;
//print("Timer Event :)\n");
//usb_keyboard_press(KEY_SPACE, 0);
}
}
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