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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 <stdbool.h>
- #include <avr/io.h>
- #include <avr/pgmspace.h>
- #include <avr/interrupt.h>
- #include <util/delay.h>
-
- #include "usb_device.h"
- #include "print.h"
- #include "matrix.h"
- #include "keymap.h"
- #include "jump_bootloader.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))
-
- static void print_matrix(void);
-
-
- uint16_t idle_count=0;
-
-
-
- int main(void)
- {
- bool modified = false;
- bool has_ghost = false;
- 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("firmware 0.2 for t.m.k.\n");
-
- int loop_count = 0;
- while (1) {
- int layer = 0;
-
- matrix_scan();
- layer = get_layer();
-
- modified = matrix_is_modified();
- has_ghost = matrix_has_ghost();
-
- // doesnt send keys during ghost occurs
- if (modified && !has_ghost) {
- key_index = 0;
- keyboard_modifier_keys = 0;
- for (int i = 0; i < 6; i++) keyboard_keys[i] = KB_NO;
-
- for (int row = 0; row < MATRIX_ROWS; row++) {
- for (int col = 0; col < MATRIX_COLS; col++) {
- if (matrix[row] & 1<<col) continue;
-
- uint8_t code = get_keycode(layer, row, col);
- if (code == KB_NO) {
- continue;
- } else if (KB_LCTRL <= code && code <= KB_RGUI) {
- // modifier keycode: 0xE0-0xE7
- keyboard_modifier_keys |= 1<<(code & 0x07);
- } else {
- if (key_index < 6)
- keyboard_keys[key_index] = code;
- key_index++;
- }
- }
- }
-
- // run bootloader when 4 left modifier keys down
- if (keyboard_modifier_keys == (MOD_LCTRL | MOD_LSHIFT | MOD_LALT | MOD_LGUI)) {
- // cancel all keys
- keyboard_modifier_keys = 0;
- for (int i = 0; i < 6; i++) keyboard_keys[i] = KB_NO;
- usb_keyboard_send();
-
- print("jump to bootloader...\n");
- _delay_ms(1000);
- jump_bootloader();
- }
-
- if (key_index > 6) {
- //Rollover
- }
-
- 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();
- }
-
- // print matrix state for debug
- if (modified) {
- print_matrix();
-
- // LED flush
- DDRD |= 1<<PD6;
- PORTD |= 1<<PD6;
- }
-
- /*
- // print counts for debug
- if ((loop_count % 0x1000) == 0) {
- //print(".");
- print("idle_count: "); phex((idle_count & 0xFF00) >> 8); phex(idle_count & 0xFF); print("\n");
- print("loop_count: "); phex((loop_count & 0xFF00) >> 8); phex(loop_count & 0xFF); print("\n");
- print_matrix();
- }
-
- // teensy LED flush for debug
- if ((loop_count & 0x100) == 0) {
- DDRD |= 1<<PD6;
- PORTD |= 1<<PD6;
- }
- */
-
- // 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);
- loop_count++;
- }
- }
-
- static void print_matrix(void) {
- print("\nr/c 01234567\n");
- for (int row = 0; row < MATRIX_ROWS; row++) {
- phex(row); print(": ");
- pbin_reverse(matrix[row]);
- if (matrix_has_ghost_in_row(row)) {
- print(" <ghost");
- }
- 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");
- }
-
- // 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++;
- }
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