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authorJeremiah <barrar@users.noreply.github.com>2017-05-13 18:24:43 -0700
committerJeremiah <barrar@users.noreply.github.com>2017-05-13 18:24:43 -0700
commit37f6f92765513cd66c92178f48785d492eb06b89 (patch)
treeeb31474d1c11d04bbe020262b65f9d254082693b /tmk_core/common/keyboard.c
parent7b7e285a984a5bf1f7f38f1b5846811dfcb3a185 (diff)
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faster and less bits
Diffstat (limited to 'tmk_core/common/keyboard.c')
-rw-r--r--tmk_core/common/keyboard.c33
1 files changed, 15 insertions, 18 deletions
diff --git a/tmk_core/common/keyboard.c b/tmk_core/common/keyboard.c
index 24cc28892..d8b5dc403 100644
--- a/tmk_core/common/keyboard.c
+++ b/tmk_core/common/keyboard.c
@@ -63,14 +63,25 @@ 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
}
/*