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@ -24,23 +24,21 @@ No further inputs are accepted until DEBOUNCE milliseconds have occurred.
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#include <stdlib.h>
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#ifndef DEBOUNCE
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#define DEBOUNCE 5
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# define DEBOUNCE 5
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#endif
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#if (MATRIX_COLS <= 8)
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# define ROW_SHIFTER ((uint8_t)1)
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# define ROW_SHIFTER ((uint8_t)1)
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#elif (MATRIX_COLS <= 16)
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# define ROW_SHIFTER ((uint16_t)1)
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# define ROW_SHIFTER ((uint16_t)1)
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#elif (MATRIX_COLS <= 32)
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# define ROW_SHIFTER ((uint32_t)1)
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# define ROW_SHIFTER ((uint32_t)1)
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#endif
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#define debounce_counter_t uint8_t
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static debounce_counter_t *debounce_counters;
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static bool counters_need_update;
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#define DEBOUNCE_ELAPSED 251
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#define MAX_DEBOUNCE (DEBOUNCE_ELAPSED - 1)
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@ -48,39 +46,39 @@ static debounce_counter_t *debounce_counters;
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void update_debounce_counters(uint8_t num_rows, uint8_t current_time);
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void transfer_matrix_values(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, uint8_t current_time);
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//we use num_rows rather than MATRIX_ROWS to support split keyboards
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void debounce_init(uint8_t num_rows)
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{
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debounce_counters = (debounce_counter_t*)malloc(num_rows*MATRIX_COLS * sizeof(debounce_counter_t));
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int i = 0;
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for (uint8_t r = 0; r < num_rows; r++)
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{
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for (uint8_t c = 0; c < MATRIX_COLS; c++)
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{
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// we use num_rows rather than MATRIX_ROWS to support split keyboards
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void debounce_init(uint8_t num_rows) {
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debounce_counters = (debounce_counter_t *)malloc(num_rows * MATRIX_COLS * sizeof(debounce_counter_t));
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int i = 0;
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for (uint8_t r = 0; r < num_rows; r++) {
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for (uint8_t c = 0; c < MATRIX_COLS; c++) {
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debounce_counters[i++] = DEBOUNCE_ELAPSED;
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}
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}
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}
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void debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool changed)
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{
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void debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool changed) {
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uint8_t current_time = timer_read() % MAX_DEBOUNCE;
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update_debounce_counters(num_rows, current_time);
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transfer_matrix_values(raw, cooked, num_rows, current_time);
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if (counters_need_update) {
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update_debounce_counters(num_rows, current_time);
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}
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if (changed) {
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transfer_matrix_values(raw, cooked, num_rows, current_time);
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}
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}
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//If the current time is > debounce counter, set the counter to enable input.
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void update_debounce_counters(uint8_t num_rows, uint8_t current_time)
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{
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// If the current time is > debounce counter, set the counter to enable input.
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void update_debounce_counters(uint8_t num_rows, uint8_t current_time) {
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counters_need_update = false;
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debounce_counter_t *debounce_pointer = debounce_counters;
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for (uint8_t row = 0; row < num_rows; row++)
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{
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for (uint8_t col = 0; col < MATRIX_COLS; col++)
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{
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if (*debounce_pointer != DEBOUNCE_ELAPSED)
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{
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for (uint8_t row = 0; row < num_rows; row++) {
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for (uint8_t col = 0; col < MATRIX_COLS; col++) {
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if (*debounce_pointer != DEBOUNCE_ELAPSED) {
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if (TIMER_DIFF(current_time, *debounce_pointer, MAX_DEBOUNCE) >= DEBOUNCE) {
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*debounce_pointer = DEBOUNCE_ELAPSED;
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} else {
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counters_need_update = true;
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}
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}
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debounce_pointer++;
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@ -89,24 +87,17 @@ void update_debounce_counters(uint8_t num_rows, uint8_t current_time)
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}
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// upload from raw_matrix to final matrix;
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void transfer_matrix_values(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, uint8_t current_time)
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{
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void transfer_matrix_values(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, uint8_t current_time) {
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debounce_counter_t *debounce_pointer = debounce_counters;
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for (uint8_t row = 0; row < num_rows; row++)
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{
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for (uint8_t row = 0; row < num_rows; row++) {
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matrix_row_t delta = raw[row] ^ cooked[row];
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matrix_row_t existing_row = cooked[row];
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matrix_row_t raw_row = raw[row];
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for (uint8_t col = 0; col < MATRIX_COLS; col++)
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{
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for (uint8_t col = 0; col < MATRIX_COLS; col++) {
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matrix_row_t col_mask = (ROW_SHIFTER << col);
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bool final_value = raw_row & col_mask;
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bool existing_value = existing_row & col_mask;
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if (*debounce_pointer == DEBOUNCE_ELAPSED &&
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(existing_value != final_value))
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{
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*debounce_pointer = current_time;
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existing_row ^= col_mask; //flip the bit.
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if ((delta & col_mask) && *debounce_pointer == DEBOUNCE_ELAPSED) {
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*debounce_pointer = current_time;
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counters_need_update = true;
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existing_row ^= col_mask; // flip the bit.
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}
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debounce_pointer++;
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}
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@ -114,8 +105,4 @@ void transfer_matrix_values(matrix_row_t raw[], matrix_row_t cooked[], uint8_t n
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}
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}
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bool debounce_active(void)
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{
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return true;
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}
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bool debounce_active(void) { return true; }
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