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matrix scan & default keymap

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b6_b7_audio
tmk 15 years ago
parent 20711b59e7
commit 8cfb3712d5
7 changed files with 467 additions and 38 deletions
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  1. 1
      Makefile
  2. 27
      keymap.c
  3. 9
      keymap.h
  4. 186
      mykey.c
  5. 8
      print.c
  6. 1
      print.h
  7. 273
      usbkeycodes.h

1
Makefile
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@ -46,6 +46,7 @@ TARGET = mykey
# List C source files here. (C dependencies are automatically generated.)
SRC = $(TARGET).c \
keymap.c \
usb_keyboard_debug.c \
print.c

27
keymap.c
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@ -0,0 +1,27 @@
#include "keymap.h"
/*
* keymap for modified macway keyboard
*/
#define MATRIX_ROWS 9
#define MATRIX_COLS 8
const uint8_t Keymap[MATRIX_COLS][MATRIX_ROWS] = {
{ KB_LALT, KB_1, KB_2, KB_3, KB_4, KB_7, KB_8, KB_9, KB_0 },
{ KB_NO, KB_ESCAPE, KB_RALT, KB_NO, KB_5, KB_6, KB_EQUAL, KB_NO, KB_MINUS },
{ KB_BSPACE, KB_TAB, KB_LGUI, KB_RSHIFT, KB_T, KB_Y, KB_RBRACKET, KB_NO, KB_LBRACKET },
{ KB_NO, KB_Q, KB_W, KB_E, KB_R, KB_U, KB_I, KB_O, KB_P },
{ KB_BSLASH, KB_A, KB_S, KB_D, KB_F, KB_J, KB_K, KB_L, KB_SCOLON },
{ KB_NO, KB_LCTRL, KB_NO, KB_UP, KB_G, KB_H, KB_NO, KB_GRAVE, KB_QUOTE },
{ KB_ENTER, KB_Z, KB_X, KB_C, KB_V, KB_M, KB_COMMA, KB_DOWN, KB_NO },
{ KB_SPACE, KB_DOWN, KB_RIGHT, KB_LEFT, KB_B, KB_N, KB_LSHIFT, KB_NO, KB_SLASH }
};
uint8_t get_keycode(uint8_t row, uint8_t col)
{
if (row >= MATRIX_ROWS)
return KB_NO;
if (col >= MATRIX_COLS)
return KB_NO;
return Keymap[col][row];
}

9
keymap.h
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@ -0,0 +1,9 @@
#ifndef KEYMAP_H
#define KEYMAP_H 1
#include <stdint.h>
#include "usbkeycodes.h"
uint8_t get_keycode(uint8_t row, uint8_t col);
#endif

186
mykey.c
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@ -27,6 +27,7 @@
#include <util/delay.h>
#include "usb_keyboard_debug.h"
#include "print.h"
#include "keymap.h"
#define LED_CONFIG (DDRD |= (1<<6))
#define LED_ON (PORTD &= ~(1<<6))
@ -38,21 +39,127 @@ uint8_t number_keys[10]=
uint16_t idle_count=0;
//
// scan matrix
//
uint8_t MAX_ROW = 9;
// initialize ports for matrix
void port_setup(void)
{
// Column: input w/pullup
DDRB = 0x00;
PORTB = 0xFF;
// Row: Hi-Z(unselected)
// PD:0,1,2,3,6,7
// PC:6,7
// PF:7
DDRD = 0x00;
PORTD = 0x00;
DDRC = 0x00;
PORTC = 0x00;
DDRF = 0x00;
PORTF = 0x00;
}
// select a row of matrix for read
void select_row(uint8_t row)
{
switch (row) {
case 0:
DDRD = (1<<0);
PORTD = 0x00;
DDRC = 0x00;
PORTC = 0x00;
DDRF = 0x00;
PORTF = 0x00;
break;
case 1:
DDRD = (1<<1);
PORTD = 0x00;
DDRC = 0x00;
PORTC = 0x00;
DDRF = 0x00;
PORTF = 0x00;
break;
case 2:
DDRD = (1<<2);
PORTD = 0x00;
DDRC = 0x00;
PORTC = 0x00;
DDRF = 0x00;
PORTF = 0x00;
break;
case 3:
DDRD = (1<<3);
PORTD = 0x00;
DDRC = 0x00;
PORTC = 0x00;
DDRF = 0x00;
PORTF = 0x00;
break;
case 4:
DDRD = (1<<6);
PORTD = 0x00;
DDRC = 0x00;
PORTC = 0x00;
DDRF = 0x00;
PORTF = 0x00;
break;
case 5:
DDRD = (1<<7);
PORTD = 0x00;
DDRC = 0x00;
PORTC = 0x00;
DDRF = 0x00;
PORTF = 0x00;
break;
case 6:
DDRD = 0x00;
PORTD = 0x00;
DDRC = (1<<6);
PORTC = 0x00;
DDRF = 0x00;
PORTF = 0x00;
break;
case 7:
DDRD = 0x00;
PORTD = 0x00;
DDRC = (1<<7);
PORTC = 0x00;
DDRF = 0x00;
PORTF = 0x00;
break;
case 8:
DDRD = 0x00;
PORTD = 0x00;
DDRC = 0x00;
PORTC = 0x00;
DDRF = (1<<7);
PORTF = 0x00;
break;
}
}
uint8_t read_col(void)
{
return PINB;
}
int main(void)
{
uint8_t b, d, mask, i, reset_idle;
uint8_t b_prev=0xFF, d_prev=0xFF;
uint8_t i, reset_idle;
uint8_t prev_state[MAX_ROW];
for (int i=0; i < MAX_ROW; i++) prev_state[i] = 0xFF;
// set for 16 MHz clock
CPU_PRESCALE(0);
// Configure all port B and port D pins as inputs with pullup resistors.
// See the "Using I/O Pins" page for details.
// http://www.pjrc.com/teensy/pins.html
DDRD = 0x00;
DDRB = 0x00;
PORTB = 0xFF;
PORTD = 0xFF;
port_setup();
// 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,
@ -76,32 +183,40 @@ int main(void)
print("All Port B or Port D pins are inputs with pullup resistors.\n");
print("Any connection to ground on Port B or D pins will result in\n");
print("keystrokes sent to the PC (and debug messages here).\n");
uint8_t col;
uint8_t code;
while (1) {
// read all port B and port D pins
b = PINB;
d = PIND;
// check if any pins are low, but were high previously
mask = 1;
reset_idle = 0;
for (i=0; i<8; i++) {
if (((b & mask) == 0) && (b_prev & mask) != 0) {
//usb_keyboard_press(KEY_B, KEY_SHIFT);
//usb_keyboard_press(number_keys[i], 0);
print("Port B, bit ");
phex(i);
print("\n");
reset_idle = 1;
}
if (((d & mask) == 0) && (d_prev & mask) != 0) {
//usb_keyboard_press(KEY_D, KEY_SHIFT);
//usb_keyboard_press(number_keys[i], 0);
print("Port D, bit ");
phex(i);
print("\n");
reset_idle = 1;
}
mask = mask << 1;
}
reset_idle = 0;
for (uint8_t r=0; r < MAX_ROW; r++) {
select_row(r);
// without this read unstable value.
_delay_us(30);
col = read_col();
if (col != prev_state[r]) {
prev_state[r] = col;
phex(r);
print(": ");
pbin(col);
print("\n");
for (int c = 0; c < 8; c++) {
if (col & 1<<c) continue;
code = get_keycode(r, c);
phex(code);
print("\n");
usb_keyboard_press(code, 0);
}
reset_idle = 1;
}
}
// if any keypresses were detected, reset the idle counter
if (reset_idle) {
// variables shared with interrupt routines must be
@ -111,11 +226,10 @@ int main(void)
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".
b_prev = b;
d_prev = d;
_delay_ms(2);
}
}

8
print.c
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@ -58,5 +58,9 @@ void phex16(unsigned int i)
}
void pbin(unsigned char c)
{
for (int i=7; i>=0; i--) {
usb_debug_putchar((c & (1<<i)) ? '1' : '0');
}
}

1
print.h
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@ -12,5 +12,6 @@
void print_P(const char *s);
void phex(unsigned char c);
void phex16(unsigned int i);
void pbin(unsigned char c);
#endif

273
usbkeycodes.h
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@ -0,0 +1,273 @@
/* Some modified from Keyboard Upgrade 0.3.0
* 2010/08/22
*/
/*
* Keyboard Upgrade -- Firmware for homebrew computer keyboard controllers.
* Copyright (C) 2009 Robert Homann
*
* Based on RUMP (http://mg8.org/rump/), Copyright (C) 2008 Chris Lee
*
* Based on c64key (http://symlink.dk/projects/c64key/),
* Copyright (C) 2006-2007 Mikkel Holm Olsen
*
* Based on HID-Test by Christian Starkjohann, Objective Development
*
* This file is part of the Keyboard Upgrade package.
*
* 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 the Keyboard Upgrade package; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#ifndef USBKEYCODES_H
#define USBKEYCODES_H
/*
* The USB keycodes are enumerated here - the first part is simply
* an enumeration of the allowed scan-codes used for USB HID devices.
*/
/*
* see 10 Keyboard/Keypad Page(0x07)
* http://www.usb.org/developers/devclass_docs/Hut1_12.pdf
*/
enum keycodes {
KB_NO = 0,
KB_ROLL_OVER,
KB_POST_FAIL,
KB_UNDEFINED,
KB_A,
KB_B,
KB_C,
KB_D,
KB_E,
KB_F,
KB_G,
KB_H,
KB_I,
KB_J,
KB_K,
KB_L,
KB_M, /* 0x10 */
KB_N,
KB_O,
KB_P,
KB_Q,
KB_R,
KB_S,
KB_T,
KB_U,
KB_V,
KB_W,
KB_X,
KB_Y,
KB_Z,
KB_1,
KB_2,
KB_3, /* 0x20 */
KB_4,
KB_5,
KB_6,
KB_7,
KB_8,
KB_9,
KB_0,
KB_ENTER,
KB_ESCAPE,
KB_BSPACE,
KB_TAB,
KB_SPACE,
KB_MINUS,
KB_EQUAL,
KB_LBRACKET, /* [ */
KB_RBRACKET, /* ] */
KB_BSLASH, /* \ (and |) */
KB_NONUS_HASH, /* Non-US # and ~ */
KB_SCOLON, /* ; (and :) */
KB_QUOTE, /* ' and " */
KB_GRAVE, /* Grave accent and tilde */
KB_COMMA, /* , and < */
KB_DOT, /* . and > */
KB_SLASH, /* / and ? */
KB_CAPSLOCK,
KB_F1,
KB_F2,
KB_F3,
KB_F4,
KB_F5,
KB_F6,
KB_F7, /* 0x40 */
KB_F8,
KB_F9,
KB_F10,
KB_F11,
KB_F12,
KB_PSCREEN,
KB_SCKLOCK,
KB_BREAK,
KB_INSERT,
KB_HOME,
KB_PGUP,
KB_DELETE,
KB_END,
KB_PGDOWN,
KB_RIGHT,
KB_LEFT, /* 0x50 */
KB_DOWN,
KB_UP,
KB_NUMLOCK,
KP_SLASH,
KP_ASTERISK,
KP_MINUS,
KP_PLUS,
KP_ENTER,
KP_1,
KP_2,
KP_3,
KP_4,
KP_5,
KP_6,
KP_7,
KP_8, /* 0x60 */
KP_9,
KP_0,
KP_DOT,
KB_NONUS_BSLASH, /* Non-US \ and | */
KB_APPLICATION,
KB_POWER,
KP_EQUAL,
KB_F13,
KB_F14,
KB_F15,
KB_F16,
KB_F17,
KB_F18,
KB_F19,
KB_F20,
KB_F21, /* 0x70 */
KB_F22,
KB_F23,
KB_F24,
KB_EXECUTE,
KB_HELP,
KB_MENU,
KB_SELECT,
KB_STOP,
KB_AGAIN,
KB_UNDO,
KB_CUT,
KB_COPY,
KB_PASTE,
KB_FIND,
KB_MUTE,
KB_VOLUP, /* 0x80 */
KB_VOLDOWN,
KB_LOCKING_CAPS, /* locking Caps Lock */
KB_LOCKING_NUM, /* locking Num Lock */
KB_LOCKING_SCROLL, /* locking Scroll Lock */
KP_COMMA,
KP_EQUAL_AS400, /* equal sign on AS/400 */
KB_INT1,
KB_INT2,
KB_INT3,
KB_INT4,
KB_INT5,
KB_INT6,
KB_INT7,
KB_INT8,
KB_INT9,
KB_LANG1, /* 0x90 */
KB_LANG2,
KB_LANG3,
KB_LANG4,
KB_LANG5,
KB_LANG6,
KB_LANG7,
KB_LANG8,
KB_LANG9,
KB_ALT_ERASE,
KB_SYSREQ,
KB_CANCEL,
KB_CLEAR,
KB_PRIOR,
KB_RETURN,
KB_SEPARATOR,
KB_OUT,
KB_OPER,
KB_CLEAR_AGAIN,
KB_CRSEL,
KB_EXSEL,
KP_00 = 0xB0,
KP_000,
KB_THOUSANDS_SEPARATOR,
KB_DECIMAL_SEPARATOR,
CURRENCY_UNIT,
CURRENCY_SUB_UNIT,
KP_LPAREN,
KP_RPAREN,
KP_LCBRACKET, /* { */
KP_RCBRACKET, /* } */
KP_TAB,
KP_BSPACE,
KP_A,
KP_B,
KP_C,
KP_D,
KP_E,
KP_F,
KP_XOR,
KP_HAT,
KP_PERC,
KP_LT,
KP_GT,
KP_AND,
KP_LAZYAND,
KP_OR,
KP_LAZYOR,
KP_COLON,
KP_HASH,
KP_SPACE,
KP_ATMARK,
KP_EXCLAMATION,
KP_MEM_STORE,
KP_MEM_RECALL,
KP_MEM_CLEAR,
KP_MEM_ADD,
KP_MEM_SUB,
KP_MEM_MUL,
KP_MEM_DIV,
KP_PLUS_MINUS,
KP_CLEAR,
KP_CLEAR_ENTRY,
KP_BINARY,
KP_OCTAL,
KP_DECIMAL,
KP_HEXADECIMAL,
/*
* These are NOT standard USB HID - handled specially in decoding,
* so they will be mapped to the modifier byte in the USB report.
*/
MOD_START = 0xE0,
KB_LCTRL = 0xE0, /* 0x01 */
KB_LSHIFT, /* 0x02 */
KB_LALT, /* 0x04 */
KB_LGUI, /* 0x08 */
KB_RCTRL, /* 0x10 */
KB_RSHIFT, /* 0x20 */
KB_RALT, /* 0x40 */
KB_RGUI, /* 0x80 */
};
#endif /* USBKEYCODES_H */
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