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add anti-ghost logic

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This commit is contained in:
tmk 2010-09-13 00:00:58 +09:00
parent 3b31337cd8
commit 82309deefc
4 changed files with 114 additions and 63 deletions
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89
mykey.c
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@ -24,10 +24,12 @@
* THE SOFTWARE.
*/
#include <stdbool.h>
#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"
@ -45,7 +47,8 @@ uint16_t idle_count=0;
int main(void)
{
uint8_t modified = 0;
bool modified = false;
bool has_ghost = false;
uint8_t key_index = 0;
// set for 16 MHz clock
@ -77,55 +80,40 @@ int main(void)
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;
modified = matrix_is_modified();
has_ghost = matrix_has_ghost();
for (row = 0; row < MATRIX_ROWS; row++) {
if (matrix[row] != prev_matrix[row]) {
modified = 1;
}
// 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 (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");
for (col = 0; col < MATRIX_COLS; col++) {
if (matrix[row] & 1<<col) continue;
code = get_keycode(row, col);
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++;
}
}
}
print("keys: ");
for (int i = 0; i < 6; i++) { phex(keyboard_keys[i]); print(" "); }
print("\n");
print("mod: "); phex(keyboard_modifier_keys); print("\n");
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
@ -134,6 +122,23 @@ int main(void)
sei();
}
// print matrix state for debug
if (modified) {
print("r/c 01234567\n");
for (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");
}
// now the current pins will be the previous, and
// wait a short delay so we're not highly sensitive
// to mechanical "bounce".