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Diffstat (limited to 'keyboards/mechlovin/olly/bb/matrix.c')
| -rw-r--r-- | keyboards/mechlovin/olly/bb/matrix.c | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/keyboards/mechlovin/olly/bb/matrix.c b/keyboards/mechlovin/olly/bb/matrix.c new file mode 100644 index 0000000000..d745f7d2cd --- /dev/null +++ b/keyboards/mechlovin/olly/bb/matrix.c @@ -0,0 +1,362 @@ +/* +Copyright 2012-2018 Jun Wako, Jack Humbert, Yiancar +Copyright 2019 Evy Dekkers + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation, either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include "matrix.h" + +static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS; + +/* Cols 0 - 16 + * These columns use two 74HC138 3 to 8 bit demultiplexer. B4, C7 is the enable pin, must be set high (1) to use it. + * + * col / pin: PA0 PA1 PA2 PB4 PC7 PC2 PC3 PC5 + * 0: 0 ── 0 ── 0 1 ── 0 0 0 0 + * ──────────────────────────────────────────── + * 1: 0 ── 0 ── 1 1 ── 0 0 0 0 + * ──────────────────────────────────────────── + * 2: 0 ── 1 ── 0 1 ── 0 0 0 0 + * ──────────────────────────────────────────── + * 3: 0 ── 1 ── 1 1 ── 0 0 0 0 + * ──────────────────────────────────────────── + * 4: 1 ── 0 ── 0 1 ── 0 0 0 0 + * ──────────────────────────────────────────── + * 5: 1 ── 0 ── 1 1 ── 0 0 0 0 + * ──────────────────────────────────────────── + * 6: 1 ── 1 ── 0 1 ── 0 0 0 0 + * ──────────────────────────────────────────── + * 7: 1 ── 1 ── 1 1 ── 0 0 0 0 + * ──────────────────────────────────────────── + * 8: 1 ── 1 ── 1 0 ── 1 0 0 0 + * ──────────────────────────────────────────── + * 9: 0 ── 0 ── 0 0 ── 1 0 0 0 + * ──────────────────────────────────────────── + *10: 0 ── 0 ── 1 0 ── 1 0 0 0 + * ──────────────────────────────────────────── + *11: 0 ── 1 ── 0 0 ── 1 0 0 0 + * ──────────────────────────────────────────── + *12: 0 ── 1 ── 1 0 ── 1 0 0 0 + * ──────────────────────────────────────────── + *13: 1 ── 0 ── 0 0 ── 1 0 0 0 + * ──────────────────────────────────────────── + *14: 1 ── 0 ── 1 0 ── 1 0 0 0 + * ──────────────────────────────────────────── + *15: 1 ── 1 ── 0 0 ── 1 0 0 0 + * ──────────────────────────────────────────── + *16: 0 ── 0 ── 0 0 ── 0 1 0 0 + * ──────────────────────────────────────────── + *17: 0 ── 0 ── 0 0 ── 0 0 1 0 + * ──────────────────────────────────────────── + *18: 0 ── 0 ── 0 0 ── 0 0 0 1 + * + */ +static void select_col(uint8_t col) { + switch (col) { + case 0: + writePinLow(A0); + writePinLow(A1); + writePinLow(A2); + writePinHigh(B4); + break; + case 1: + writePinLow(A0); + writePinLow(A1); + writePinHigh(A2); + writePinHigh(B4); + break; + case 2: + writePinLow(A0); + writePinHigh(A1); + writePinLow(A2); + writePinHigh(B4); + break; + case 3: + writePinLow(A0); + writePinHigh(A1); + writePinHigh(A2); + writePinHigh(B4); + break; + case 4: + writePinHigh(A0); + writePinLow(A1); + writePinLow(A2); + writePinHigh(B4); + break; + case 5: + writePinHigh(A0); + writePinLow(A1); + writePinHigh(A2); + writePinHigh(B4); + break; + case 6: + writePinHigh(A0); + writePinHigh(A1); + writePinLow(A2); + writePinHigh(B4); + break; + case 7: + writePinHigh(A0); + writePinHigh(A1); + writePinHigh(A2); + writePinHigh(B4); + break; + case 8: + writePinHigh(A0); + writePinHigh(A1); + writePinHigh(A2); + writePinHigh(C7); + break; + case 9: + writePinLow(A0); + writePinLow(A1); + writePinLow(A2); + writePinHigh(C7); + break; + case 10: + writePinLow(A0); + writePinLow(A1); + writePinHigh(A2); + writePinHigh(C7); + break; + case 11: + writePinLow(A0); + writePinHigh(A1); + writePinLow(A2); + writePinHigh(C7); + break; + case 12: + writePinLow(A0); + writePinHigh(A1); + writePinHigh(A2); + writePinHigh(C7); + break; + case 13: + writePinHigh(A0); + writePinLow(A1); + writePinLow(A2); + writePinHigh(C7); + break; + case 14: + writePinHigh(A0); + writePinLow(A1); + writePinHigh(A2); + writePinHigh(C7); + break; + case 15: + writePinHigh(A0); + writePinHigh(A1); + writePinLow(A2); + writePinHigh(C7); + break; + case 16: + writePinLow(C2); + break; + case 17: + writePinLow(C3); + break; + case 18: + writePinLow(C5); + break; + } +} + +static void unselect_col(uint8_t col) { + switch (col) { + case 0: + writePinHigh(A0); + writePinHigh(A1); + writePinHigh(A2); + writePinLow(B4); + break; + case 1: + writePinHigh(A0); + writePinHigh(A1); + writePinLow(A2); + writePinLow(B4); + break; + case 2: + writePinHigh(A0); + writePinLow(A1); + writePinHigh(A2); + writePinLow(B4); + break; + case 3: + writePinHigh(A0); + writePinLow(A1); + writePinLow(A2); + writePinLow(B4); + break; + case 4: + writePinLow(A0); + writePinHigh(A1); + writePinHigh(A2); + writePinLow(B4); + break; + case 5: + writePinLow(A0); + writePinHigh(A1); + writePinLow(A2); + writePinLow(B4); + break; + case 6: + writePinLow(A0); + writePinLow(A1); + writePinHigh(A2); + writePinLow(B4); + break; + case 7: + writePinLow(A0); + writePinLow(A1); + writePinLow(A2); + writePinLow(B4); + break; + case 8: + writePinLow(A0); + writePinLow(A1); + writePinLow(A2); + writePinLow(C7); + break; + case 9: + writePinHigh(A0); + writePinHigh(A1); + writePinHigh(A2); + writePinLow(C7); + break; + case 10: + writePinHigh(A0); + writePinHigh(A1); + writePinLow(A2); + writePinLow(C7); + break; + case 11: + writePinHigh(A0); + writePinLow(A1); + writePinHigh(A2); + writePinLow(C7); + break; + case 12: + writePinHigh(A0); + writePinLow(A1); + writePinLow(A2); + writePinLow(C7); + break; + case 13: + writePinLow(A0); + writePinHigh(A1); + writePinHigh(A2); + writePinLow(C7); + break; + case 14: + writePinLow(A0); + writePinHigh(A1); + writePinLow(A2); + writePinLow(C7); + break; + case 15: + writePinLow(A0); + writePinLow(A1); + writePinHigh(A2); + writePinLow(C7); + break; + case 16: + writePinHigh(C2); + break; + case 17: + writePinHigh(C3); + break; + case 18: + writePinHigh(C5); + break; + } +} + +static void unselect_cols(void) { + //Native + writePinHigh(C2); + writePinHigh(C3); + writePinHigh(C5); + + //Demultiplexer + writePinLow(B4); + writePinLow(C7); + writePinHigh(A0); + writePinHigh(A1); + writePinHigh(A2); +} + +static void init_pins(void) { + unselect_cols(); + for (uint8_t x = 0; x < MATRIX_ROWS; x++) { + setPinInputHigh(row_pins[x]); + } + setPinOutput(A0); + setPinOutput(A1); + setPinOutput(A2); + setPinOutput(B4); + setPinOutput(C7); + setPinOutput(C2); + setPinOutput(C3); + setPinOutput(C5); +} + +static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) { + bool matrix_changed = false; + + // Select col and wait for col selecton to stabilize + select_col(current_col); + matrix_io_delay(); + + // For each row... + 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]; + + // 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); + } else { + // Pin HI, clear col bit + current_matrix[row_index] &= ~(MATRIX_ROW_SHIFTER << current_col); + } + + // Determine if the matrix changed state + if ((last_row_value != current_matrix[row_index]) && !(matrix_changed)) { + matrix_changed = true; + } + } + + // Unselect col + unselect_col(current_col); + + return matrix_changed; +} + +void matrix_init_custom(void) { + // initialize key pins + init_pins(); +} + +bool matrix_scan_custom(matrix_row_t current_matrix[]) { + bool changed = false; + + // Set col, read rows + for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) { + changed |= read_rows_on_col(current_matrix, current_col); + } + + return changed; +} |