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Improvements to handling of disconnected split keyboards. (#14033)

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* Use memcmp and memcpy to compare and copy slave matrix.

...and memset to initialize `matrix` and `raw_matrix`.

Increased my scan rate (while connected) by ~100 (on Ergodox Infinity).
Effect on AVR is unknown.

Co-authored-by: Stefan Kerkmann <karlk90@pm.me>

* Fix `matrix_post_scan` signalling change on every scan while disconnected.

* Undo removal of initialization of `slave_matrix`.

This has the effect of increasing my Ergodox Infinity firmware size by 8
bytes instead of decreasing by 8 bytes, and lowers the scan rate while
connected back to the initial value before these changes, but _might_
solve some issues on AVR.

Co-authored-by: Stefan Kerkmann <karlk90@pm.me>
This commit is contained in:
Joakim Tufvegren 2021-09-18 09:29:22 +02:00 committed by GitHub
parent 7c10d00ca6
commit 8130690a28
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 12 additions and 16 deletions
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28
quantum/matrix.c
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@ -288,10 +288,8 @@ void matrix_init(void) {
matrix_init_pins(); matrix_init_pins();
// initialize matrix state: all keys off // initialize matrix state: all keys off
for (uint8_t i = 0; i < MATRIX_ROWS; i++) { memset(matrix, 0, sizeof(matrix));
raw_matrix[i] = 0; memset(raw_matrix, 0, sizeof(raw_matrix));
matrix[i] = 0;
}
debounce_init(ROWS_PER_HAND); debounce_init(ROWS_PER_HAND);
@ -312,23 +310,21 @@ __attribute__((weak)) bool transport_master_if_connected(matrix_row_t master_mat
bool matrix_post_scan(void) { bool matrix_post_scan(void) {
bool changed = false; bool changed = false;
if (is_keyboard_master()) { if (is_keyboard_master()) {
static bool last_connected = false;
matrix_row_t slave_matrix[ROWS_PER_HAND] = {0}; matrix_row_t slave_matrix[ROWS_PER_HAND] = {0};
if (transport_master_if_connected(matrix + thisHand, slave_matrix)) { if (transport_master_if_connected(matrix + thisHand, slave_matrix)) {
for (int i = 0; i < ROWS_PER_HAND; ++i) { changed = memcmp(matrix + thatHand, slave_matrix, sizeof(slave_matrix)) != 0;
if (matrix[thatHand + i] != slave_matrix[i]) {
matrix[thatHand + i] = slave_matrix[i]; last_connected = true;
} else if (last_connected) {
// reset other half when disconnected
memset(slave_matrix, 0, sizeof(slave_matrix));
changed = true; changed = true;
}
} last_connected = false;
} else {
// reset other half if disconnected
for (int i = 0; i < ROWS_PER_HAND; ++i) {
matrix[thatHand + i] = 0;
slave_matrix[i] = 0;
} }
changed = true; if (changed) memcpy(matrix + thatHand, slave_matrix, sizeof(slave_matrix));
}
matrix_scan_quantum(); matrix_scan_quantum();
} else { } else {