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faster and less bits

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This commit is contained in:
Jeremiah 2017-05-13 18:24:43 -07:00
parent 7b7e285a98
commit 37f6f92765
1 changed files with 15 additions and 18 deletions
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33
tmk_core/common/keyboard.c
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@ -63,15 +63,26 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#ifdef MATRIX_HAS_GHOST
static matrix_row_t matrix_ghost_check[MATRIX_ROWS];
extern const uint16_t keymaps[][MATRIX_ROWS][MATRIX_COLS];
static matrix_row_t get_real_keys(uint8_t row, matrix_row_t rowdata){
matrix_row_t out = 0;
for (int col = 0; col < MATRIX_COLS; col++) {
if (pgm_read_byte(&keymaps[0][row][col]) && ((rowdata & (1<<col)))){
out |= 1<<col;
}
}
return out;
}
static inline bool countones(matrix_row_t data)
{
int count = 0;
for (int col = 0; col < MATRIX_COLS; col++) {
if (data & (1<<col))
if (data & (1<<col)){
count++;
}
}
if (count > 1){
return true;
}
@ -79,7 +90,7 @@ static inline bool countones(matrix_row_t data)
}
static inline bool has_ghost_in_row(uint8_t row, matrix_row_t rowdata)
{
rowdata &= matrix_ghost_check[row];
rowdata = get_real_keys(row, rowdata);
if (((rowdata - 1) & rowdata) == 0){
return false;
}
@ -90,24 +101,13 @@ static inline bool has_ghost_in_row(uint8_t row, matrix_row_t rowdata)
// Ghost occurs when the row shares column line with other row, blanks in the matrix don't matter
// If there are more than two real keys pressed and they match another row's real keys, the row will be ignored.
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
if (i != row && countones((matrix_get_row(i) & matrix_ghost_check[i]) & rowdata)){
if (i != row && countones(get_real_keys(i, matrix_get_row(i)) & rowdata)){
return true;
}
}
return false;
}
extern const uint16_t keymaps[][MATRIX_ROWS][MATRIX_COLS];
// bit map of true keys and empty spots in matrix, each row is reversed
static inline void make_ghost_check_array(void){
for (int row = 0; row < MATRIX_ROWS; row++) {
for (int col = 0; col < MATRIX_COLS; col++) {
if (pgm_read_byte(&keymaps[0][row][col]) != 0)
matrix_ghost_check[row] |= 1<<col;
}
}
}
#endif
@ -148,9 +148,6 @@ void keyboard_init(void) {
#if defined(NKRO_ENABLE) && defined(FORCE_NKRO)
keymap_config.nkro = 1;
#endif
#ifdef MATRIX_HAS_GHOST
make_ghost_check_array();
#endif
}
/*