diff options
Diffstat (limited to 'keyboards/matrix/abelx/matrix.c')
| -rw-r--r-- | keyboards/matrix/abelx/matrix.c | 108 | 
1 files changed, 108 insertions, 0 deletions
| diff --git a/keyboards/matrix/abelx/matrix.c b/keyboards/matrix/abelx/matrix.c new file mode 100644 index 0000000000..56129bd0b5 --- /dev/null +++ b/keyboards/matrix/abelx/matrix.c @@ -0,0 +1,108 @@ +/** + * matrix.c + *  + * Copyright 2020 astro <[email protected]> + * + * 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 <stdint.h> +#include <stdbool.h> +#include <string.h> +#include "quantum.h" +#include "matrix.h" +#include "tca6424.h" +#include "abelx.h" + +static const uint16_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS; + +void matrix_init_custom(void) +{ +    tca6424_init(); +    // set port0 +    tca6424_write_config(TCA6424_PORT0, 0); +    // set port1 +    tca6424_write_config(TCA6424_PORT1, 0); +    // set port2 +    tca6424_write_config(TCA6424_PORT2, 0xF5); + +    // clear output +    tca6424_write_port(TCA6424_PORT0, 0); +    tca6424_write_port(TCA6424_PORT1, 0); +    tca6424_write_port(TCA6424_PORT2, 0); +} + + +static uint8_t row_mask[] = {ROW1_MASK,ROW2_MASK,ROW3_MASK,ROW4_MASK,ROW5_MASK,ROW6_MASK}; +static uint8_t col_mask[] = {COL1_MASK, COL2_MASK, COL3_MASK, COL4_MASK, COL5_MASK, COL6_MASK, COL7_MASK, COL8_MASK, COL9_MASK, COL10_MASK, COL11_MASK, COL12_MASK, COL13_MASK, COL14_MASK, COL15_MASK, COL16_MASK}; + +bool matrix_scan_custom(matrix_row_t current_matrix[]) +{ +    bool changed = false; +    uint8_t p0_data = tca6424_read_port(TCA6424_PORT0); + +    for (int col = 0; col < MATRIX_COLS; col++) { +        // Select col and wait for col selecton to stabilize +        switch(col) { +        case 0: +            set_pin(col_pins[col]); +            break; +        case 1 ... 8: +            tca6424_write_port(TCA6424_PORT1, col_mask[col]); +            break; +        default: +            tca6424_write_port(TCA6424_PORT0, col_mask[col]|(p0_data&0x01)); +            break; +        } +        matrix_io_delay(); + +        // read row port for all rows +        uint8_t row_value = tca6424_read_port(ROW_PORT); +        for (uint8_t row = 0; row < MATRIX_ROWS; row++) { +            uint8_t tmp = row; +            // Store last value of row prior to reading +            matrix_row_t last_row_value = current_matrix[tmp]; + +            // Check row pin state +            if (row_value & row_mask[row]) { +                // Pin HI, set col bit +                current_matrix[tmp] |= (1 << col); +            } else { +                // Pin LOW, clear col bit +                current_matrix[tmp] &= ~(1 << col); +            } + +            // Determine if the matrix changed state +            if ((last_row_value != current_matrix[tmp]) && !(changed)) { +                changed = true; +            } +        } +        // Unselect col +        switch(col) { +        case 0: +            clear_pin(col_pins[col]); +            break; +        case 8: +            tca6424_write_port(TCA6424_PORT1, 0); +            break; +        case 15: +            tca6424_write_port(TCA6424_PORT0, p0_data&0x01); +            break; +        default: +            break; +        } +    } + +    return changed; +} | 
