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Slight speed increases for matrix scanning (#9150)

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This commit is contained in:
Joel Challis 2020-05-21 17:59:56 +01:00 • committed by GitHub
parent 1816ad01d0
commit 205321c377
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 50 additions and 32 deletions
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41
quantum/matrix.c
View file

@ -48,17 +48,22 @@ static void init_pins(void) {
}
static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
matrix_row_t last_row_value = current_matrix[current_row];
current_matrix[current_row] = 0;
// Start with a clear matrix row
matrix_row_t current_row_value = 0;
for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
pin_t pin = direct_pins[current_row][col_index];
if (pin != NO_PIN) {
current_matrix[current_row] |= readPin(pin) ? 0 : (MATRIX_ROW_SHIFTER << col_index);
current_row_value |= readPin(pin) ? 0 : (MATRIX_ROW_SHIFTER << col_index);
}
}
return (last_row_value != current_matrix[current_row]);
// If the row has changed, store the row and return the changed flag.
if (current_matrix[current_row] != current_row_value) {
current_matrix[current_row] = current_row_value;
return true;
}
return false;
}
#elif defined(DIODE_DIRECTION)
@ -84,12 +89,9 @@ static void init_pins(void) {
}
}
static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
// Store last value of row prior to reading
matrix_row_t last_row_value = current_matrix[current_row];
// Clear data in matrix row
current_matrix[current_row] = 0;
static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
// Start with a clear matrix row
matrix_row_t current_row_value = 0;
// Select row and wait for row selecton to stabilize
select_row(current_row);
@ -101,13 +103,18 @@ static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
uint8_t pin_state = readPin(col_pins[col_index]);
// Populate the matrix row with the state of the col pin
current_matrix[current_row] |= pin_state ? 0 : (MATRIX_ROW_SHIFTER << col_index);
current_row_value |= pin_state ? 0 : (MATRIX_ROW_SHIFTER << col_index);
}
// Unselect row
unselect_row(current_row);
return (last_row_value != current_matrix[current_row]);
// If the row has changed, store the row and return the changed flag.
if (current_matrix[current_row] != current_row_value) {
current_matrix[current_row] = current_row_value;
return true;
}
return false;
}
# elif (DIODE_DIRECTION == ROW2COL)
@ -143,19 +150,21 @@ static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
for (uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++) {
// Store last value of row prior to reading
matrix_row_t last_row_value = current_matrix[row_index];
matrix_row_t current_row_value = last_row_value;
// Check row pin state
if (readPin(row_pins[row_index]) == 0) {
// Pin LO, set col bit
current_matrix[row_index] |= (MATRIX_ROW_SHIFTER << current_col);
current_row_value |= (MATRIX_ROW_SHIFTER << current_col);
} else {
// Pin HI, clear col bit
current_matrix[row_index] &= ~(MATRIX_ROW_SHIFTER << current_col);
current_row_value &= ~(MATRIX_ROW_SHIFTER << current_col);
}
// Determine if the matrix changed state
if ((last_row_value != current_matrix[row_index]) && !(matrix_changed)) {
matrix_changed = true;
if ((last_row_value != current_row_value)) {
matrix_changed |= true;
current_matrix[row_index] = current_row_value;
}
}

41
quantum/split_common/matrix.c
View file

@ -65,17 +65,22 @@ static void init_pins(void) {
}
static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
matrix_row_t last_row_value = current_matrix[current_row];
current_matrix[current_row] = 0;
// Start with a clear matrix row
matrix_row_t current_row_value = 0;
for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
pin_t pin = direct_pins[current_row][col_index];
if (pin != NO_PIN) {
current_matrix[current_row] |= readPin(pin) ? 0 : (MATRIX_ROW_SHIFTER << col_index);
current_row_value |= readPin(pin) ? 0 : (MATRIX_ROW_SHIFTER << col_index);
}
}
return (last_row_value != current_matrix[current_row]);
// If the row has changed, store the row and return the changed flag.
if (current_matrix[current_row] != current_row_value) {
current_matrix[current_row] = current_row_value;
return true;
}
return false;
}
#elif defined(DIODE_DIRECTION)
@ -101,12 +106,9 @@ static void init_pins(void) {
}
}
static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
// Store last value of row prior to reading
matrix_row_t last_row_value = current_matrix[current_row];
// Clear data in matrix row
current_matrix[current_row] = 0;
static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
// Start with a clear matrix row
matrix_row_t current_row_value = 0;
// Select row and wait for row selecton to stabilize
select_row(current_row);
@ -118,13 +120,18 @@ static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
uint8_t pin_state = readPin(col_pins[col_index]);
// Populate the matrix row with the state of the col pin
current_matrix[current_row] |= pin_state ? 0 : (MATRIX_ROW_SHIFTER << col_index);
current_row_value |= pin_state ? 0 : (MATRIX_ROW_SHIFTER << col_index);
}
// Unselect row
unselect_row(current_row);
return (last_row_value != current_matrix[current_row]);
// If the row has changed, store the row and return the changed flag.
if (current_matrix[current_row] != current_row_value) {
current_matrix[current_row] = current_row_value;
return true;
}
return false;
}
# elif (DIODE_DIRECTION == ROW2COL)
@ -160,19 +167,21 @@ static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
for (uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++) {
// Store last value of row prior to reading
matrix_row_t last_row_value = current_matrix[row_index];
matrix_row_t current_row_value = last_row_value;
// Check row pin state
if (readPin(row_pins[row_index]) == 0) {
// Pin LO, set col bit
current_matrix[row_index] |= (MATRIX_ROW_SHIFTER << current_col);
current_row_value |= (MATRIX_ROW_SHIFTER << current_col);
} else {
// Pin HI, clear col bit
current_matrix[row_index] &= ~(MATRIX_ROW_SHIFTER << current_col);
current_row_value &= ~(MATRIX_ROW_SHIFTER << current_col);
}
// Determine if the matrix changed state
if ((last_row_value != current_matrix[row_index]) && !(matrix_changed)) {
matrix_changed = true;
if ((last_row_value != current_row_value)) {
matrix_changed |= true;
current_matrix[row_index] = current_row_value;
}
}